Rolls-Royce Archives
| Identifier | Entry | ||
| scan 001 | The dispatch of four sets of blades with tungsten contacts for testing on experimental cars. | ||
| View original record | To EP. from EFC To HS/TMW. X. 2894 EFC3/T3.1.21. X.2894 - TUNGSTEN CONTACTS. We are sending you herewith four sets of blades and screws of our standard battery ignition, but fitted with Tungsten… | ||
| scan 002 | Letter from Tungsten Manufacturing Co. Ltd. concerning the testing of supplied Tungsten Contacts. | ||
| View original record | X.2894 Telephones: CENTRAL 3016-7-8 Telegrams: 'DURAMISTIC ESTRAND LONDON' Cables: 'DURAMISTIC LONDON' A.B.C. CODE 5th Edition. TUNGSTEN MANUFACTURING Co LTD THANET HOUSE 231/2 STRAND LONDON. W.C.2.… | ||
| scan 003 | Fitting blades and screws with tungsten points to 7-CA and 2.EX car engines. | ||
| View original record | X.2894 EFC. from Hs/TMW. Hs/TMW9/LG6.1.21. Please note, we have fitted to 7-CA and Test Car engine - 2 No.3 Blades and screw fitted with Tungsten points received from the Fansteel Products Company… | ||
| scan 004 | Communication regarding the supply of an outside battery case and a preference against fitting certain electrical components. | ||
| View original record | X2894 E/W. Bk4/HM6.1.21. X.2894. X.4215. X.3928. X.33981 Re your EFC5/T31.12.20. Yes, will you please supply an outside case for the battery, so that it can be colted securely to the running board. We… | ||
| scan 005 | Fitting issue with tungsten contacts on blades. | ||
| View original record | X.2894 To EP. from EFC. c. Hs/TMW. EFC6/T7.1.21. X.2894 - TUNGSTEN CONTACTS. Further to our EFC3/T3.1.21, my assistant reports to me that owing to the Tungsten contacts on the blade being deeper than… | ||
| scan 006 | Test report on Tungsten contact points for a U.S. & Bosch Magneto. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X.2894 91269 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No.: P.A. 54 Customer's No.: Re: X 2894 Date: Jan 10th 1921 X.3916 Test of Tungsten Contact… | ||
| scan 007 | Investigation into faulty sparking points and contact-breaker settings, which resulted in a soldered point coming off. | ||
| View original record | RR.300 (120B) (SP.349 24-1-19) MP.200552 91270 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A.54. Customer's No. Re X 2894 Date Jan 10th 1921 The points were replaced dirty, but with no… | ||
| scan 008 | Letter from Rolls-Royce of America concerning the dispatch of six battery ignition blades with Tungsten contact points. | ||
| View original record | X 2894 E.B. RECEIVED FEB 1 1921 Oyl - G 18121 Jan. 18, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr.E.F.Clarke. Dear Sir:- X-2894 Re: Tungsten Contacts… | ||
| scan 009 | Testing tungsten points from a Liberty Delco ignition for use in standard battery ignition systems. | ||
| View original record | N.R.'325A (100 T) (S.H Tps, 10-12-20) G. 1947 X.2894 To R. from EFC. c. to CJ. c. to E. EFC7/T21.1.21. X.2894 - TUNGSTEN POINTS TAKEN FROM LIBERTY IGNITION. Please find attached copy of my assistant's… | ||
| scan 010 | 390-hour test of Liberty tungsten contact points in a battery ignition system. | ||
| View original record | R.R. 326A (100 T) (S.H. 798, 10-12-20) G. 1947 A. A. 40. EFC. --- 88274. 21.1.21. X.2894 - LIBERTY TUNGSTEN CONTACT POINTS ON R.R. BATTERY IGNITION. A pair of tungsten contact points taken from… | ||
| scan 011 | Test report on tungsten points from the Independent Lamp and Wire Co. noting defects and sparking. | ||
| View original record | R.R. 136A (100 T) (S.H. 798, 16-12-20) G. 1947 -2- Contd. A pair of tungsten points by the Independent Lamp and Wire Co., which have been run on a car, showed the same defects to a greater degree.… | ||
| scan 012 | Test report on the failure of Tungsten Points in a Watford Magneto due to arcing. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X.2894 91279 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No. P.A. 59. Customer's No. Re X 2894. Test of Tungsten Points on X 2375 Watford Magneto Eb. No… | ||
| scan 013 | Unsatisfactory experimental trials of tungsten contact points for magnetos. | ||
| View original record | X2894 To R. from EFC. c. to CJ. c. to E. c. to Da. c. to PN. c. to Hy. c. to EP. c. to EWT. for R.R. Inc. EFC2/T25.1.21 X.2894. - TUNGSTEN CONTACT POINTS FOR MAGNETOS. We have experimentally tried two… | ||
| scan 014 | The performance of Tungsten make and break points after 3,000 miles of use compared to standard contacts. | ||
| View original record | H.T X.2894 EFC. EP17/F25.1.21. X.2894. RE. TUNGSTEN MAKE AND BREAK POINTS. Mr. Clarke of the Demonstration Class reports that since fitting the above to the battery ignition the car has run 3,000… | ||
| scan 015 | Query regarding the compatibility of tungsten points with different battery ignition systems. | ||
| View original record | To EFC. from R. c. to CJ. X2894 R2/G26.1.21. X.2894. X.3129. RE TUNGSTEN POINTS. X 3199 It would appear that tungsten points will stand in Delco battery ignition, but not on R.R. Why? Is the primary… | ||
| scan 016 | Query regarding the markings and fitment of tungsten contacts for a battery ignition make & break system. | ||
| View original record | X.2894 To EP. from EFC. EFC1/S27.1.21. X. 2894. - TUNGSTEN CONTACTS FOR BATTERY IGNITION MAKE & BREAK. I have your note EP17/F25.1.21, and I would like you to say whether the contacts fitted to the… | ||
| scan 017 | Poor performance of tungsten ignition points from a Liberty Delco system compared to standard and experimental contacts. | ||
| View original record | To R. from EFC. c. to CJ. c. to E. X.2894 EFC3/T28.1.21. X. 2894 - TUNGSTEN POINTS. L 3/19 It certainly appears strange that the points taken from the Liberty Delco ignition have not been satisfactory… | ||
| scan 018 | The bench testing of distributor sparking points made from various materials for a battery ignition system. | ||
| View original record | X.2894 To R. from EFC. c. to CJ. c. to E. c. to FN. c. to Bn. c. to De. c. to By. c. to EP. c. to EWT. for R.R. Inc. X.3309. - DISTRIBUTOR SPARKING POINTS OF VARIOUS MATERIALS FOR R.R. BATTERY… | ||
| scan 019 | Markings for sparking points made of various metals and seeking instructions for further testing. | ||
| View original record | Contd. -2- EFC6/T28.1.21. The stainless steel sparking points are marked SS and the rotor marked "Stainless" as with "Silver above. The Nickel-brass points are marked NB and NB is marked on the side… | ||
| scan 020 | The bench testing of various materials for distributor sparking points in a battery ignition system. | ||
| View original record | THE.D.(W/S) 21/51. W5 M.M. (T/M) 2.500 5.23 EFC. A.A. 43. 88284. X.3309. - DISTRIBUTOR SPARKING POINTS OF VARIOUS MATERIALS FOR R.R. BATTERY IGNITION. During the bench tests of tungsten contact points… | ||
| scan 021 | Report page detailing the wear and tear on various metal components like Nichrome, Nickel-Brass, and Nickel. | ||
| View original record | Contd. -2- slightly dull. The rotor has pitted at the leading edge and was covered with a dark deposit, but which can be easily rubbed off. The copper mounting has also turn dull. Nichrome. The points… | ||
| scan 022 | Requesting the return of components for an additional 100 hours of testing. | ||
| View original record | Contd. -3- or perhaps three of the better of these should be run for another period of possibly 100 hours. If so, perhaps Mr. Royce would kindly return these, when additional running will be carried… | ||
| scan 023 | Letter from C. Melin & Co. introducing their 'NEO-TUNGSTEN' screw contacts for magnetos and contact breakers. | ||
| View original record | C. MELIN & CO E. DURAND. ESTABLISHED IN 1865. HL X. 2894 16 FEB 1921 Telegrams: "REPLETE PHONE, LONDON" Telephone 4010 AVENUE. 7. INDIA STREET, CRUTCHED FRIARS, RECEIVED LONDON, E.C.3. AND AT PARIS.… | ||
| scan 024 | Letter from a supplier regarding a new Tungsten Contact for Magneto Work, including a specimen. | ||
| View original record | CONTRACTORS TO THE BRITISH & FOREIGN GOVERNMENTS. Sales subject to strikes, accidents, or causes beyond our control. Quotations subject to change without notice. TRADE MARK LION BRAND FOUNDED 1869 by… | ||
| scan 025 | Letter to Messrs. G.G. Blackwell Sons & Co. Ltd. regarding experiments on tungsten contacts for magnetos. | ||
| View original record | X.2894 EFC/T 18th February, 1921. Messrs. G.G. Blackwell Sons & Co.Ltd., The Albany, Liverpool. Dear Sirs, X.2894 Re Tungsten Contacts. We thank you for your letter, ref: H.A.B.17. of the 16th inst.… | ||
| scan 026 | The testing of Tungsten contacts for battery ignition make and break systems. | ||
| View original record | EFC. from EP. X.2894. TUNGSTEN CONTACTS FOR BATTERY IGNITION MAKE AND BREAK. With reference to your EFC1/S27.1.21. and our report EP17/F21121 to the effect that Mr.Clarke of the Demonstration Class… | ||
| scan 027 | U.S.A. Bosch battery ignition system, its components, and supply conditions from Delco. | ||
| View original record | R.R. 256A (10M T) S.H. 738. 10-12-20) G 2947 X 2894 & E To R. from Hs. c. to CJ. c. to Da. c. to EWT. for R. R. Inc. Hs7/LG24. 2. 21. X. 4275 - U.S.A. BOSCH BATTERY IGNITION. X. 4284. X. 2894.… | ||
| scan 028 | Cover note regarding a letter from America about tungsten contact points for magnetos. | ||
| View original record | X.2894 EWT. to EFC. EWT/HJC7/G1.3.21. X.2894 Re: Tungsten Contact Points for Magnetos. Attached hereto is copy of letter reference Oy3/G15.2.21 addressed to CJ. from America. Copy of this has been… | ||
| scan 029 | Letter from Rolls-Royce of America regarding the use of tungsten contact points for magnetos and battery ignition. | ||
| View original record | X 1894 OyS - G 15221 February 15, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. X.2894. Attention: Messrs. F.W. Royce and M.F. Clarke. Dear Sir:- Re: Tungsten Contact… | ||
| scan 030 | List of questions for Mr. Royce regarding issues with the battery ignition system. | ||
| View original record | X.2894 EFC/T3.3.21. X.3199 - BATTERY IGNITION - GENERAL. Questions re battery ignition to which Mr. Royce requires answers. 1. Why do we have pre-ignitions due to mutual induction on the R.R.… | ||
| scan 031 | Extract discussing the materials and performance of the American Bosch Battery Ignition system. | ||
| View original record | X2894 Extract from Oy4/G4.3.21. X.4.75- AMERICAN BOSCH BATTERY IGNITION. Contact Breaker: X.1818. X.1819. X.2894. The points are Tungsten which is used here universally on battery ignition and gives… | ||
| scan 032 | The failure of Tungsten steel contact points for battery ignition after testing on a demonstration car. | ||
| View original record | X.2894. EFC. from EP. EP7/F24.3.21. A.T. X.2894 - TUNGSTEN CONTACTS FOR BATTERY IGNITION MAKE AND BREAK. Further to our EP16/F24.2.21, we are now returning to you herewith the Tungsten steel points… | ||
| scan 033 | Trial of tungsten contacts for battery ignition from C. Melin & Co. | ||
| View original record | X2894 To Wd. from EFC. EFC8/T1.4.21. X.2894 - TUNGSTEN CONTACTS FOR BATTERY IGNITION. With reference to the attached copy of a letter received from C. Melin & Co. of Feb.15th, as we are interested in… | ||
| scan 034 | Cover memo for an attached report concerning Tungsten points and their reaction to current density. | ||
| View original record | X.2894 To R & E. from EFC. c. CJ. & PN. c. EWT. for R.R.Inc. EFC5/T7.4.21. X.2894 - TUNGSTEN POINTS. Attached please find report of my assistant on Tungsten contacts as affected by current density,… | ||
| scan 035 | Technical memorandum discussing current density in tungsten contact points for various ignition systems. | ||
| View original record | 88304. 5.4.21. EFC. AA53 X.2894 - TUNGSTEN CONTACT POINTS. With regard to remarks made from America to the effect that the current in tungsten contact points should not be too high, it is noteworthy… | ||
| scan 036 | Continued report on distributor sparking issues with tungsten contacts and proposed solutions. | ||
| View original record | -2- Contd. As in normal running on the R.R. distributor with tungsten contacts, metal is transferred from one point to the other, it seems probable that sparking is the cause of failure. This sparking… | ||
| scan 037 | Trial report on sample tungsten contacts for a magneto contact breaker. | ||
| View original record | To R & E. from EFC. c. C.J. & P.N. c. Da. & E.P. c. By. & Bn. c. EWT. for R.R. Inc. X 2894 EFC3/T15.4.21. X.2894 - SAMPLE TUNGSTEN CONTACTS FOR MAGNETO & CONTACT BREAKER. Herewith please receive copy… | ||
| scan 038 | Test report on sample tungsten contacts from Messrs. Blackwell. | ||
| View original record | EFC. 91303. April 13th 1921. P.A. 75. X. 2694 - TEST OF SAMPLE TUNGSTEN CONTACTS FROM MESSRS. BLACKWELL. These contacts have now run for 103 hours, with the following results. The spark points were… | ||
| scan 039 | Confirming receipt of 'Neo-Tungsten' ignition points from C.Melin & Co. for testing. | ||
| View original record | H.H. 88a-100 T; (S.H. 798, 10-12-20) G. 2948 EFC from Wd. X.2894. Wd1/NJ30 4.21. X.2894 - Tungsten Contacts for Battery Ignition. Yours EFC8/T1.4.21. We are this morning in receipt of a letter from… | ||
| scan 040 | From EFC to EP requesting a report on the operation of a pair of tungsten contacts. | ||
| View original record | X.2894. EFC2/T6.5.21. To EP. from EFC. X.2894 - TUNGSTEN CONTACTS. Of the four sets of tungsten contacts sent under cover of our EFC3/T3.1.21, two pairs of which were marked "2" and two pairs marked… | ||
| scan 041 | Proposal by Mr. Royce for an experiment on tungsten contacts in low tension make and break systems. | ||
| View original record | X 2894 To EPG. from E. Copy to HS. E1/G7/5/21. X2894 RE TUNGSTEN CONTACTS ON LOW TENSION MAKE AND BREAK. X1819 Referring to the use of tungsten on the low tension contact maker, Mr. Royce would like… | ||
| scan 042 | Instructions for arranging swivelling tungsten contact points on a distributor. | ||
| View original record | X2894 88318 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No: AA 60 Customer's No.: 1 Re: X2894 Tungsten Contacts with Scrub X1819. To arrange a pair of contact points on a distributor as requested… | ||
| scan 043 | Instruction sheet with a diagram detailing the modification of a blade by bending it to a 30-degree angle. | ||
| View original record | RR 100 T(JOS) (SP 349 24-1-19) MP 200552 88319 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. Z. Re. 19 The blade must be bent back at the tip, 30° being probably a very suitable angle,… | ||
| scan 044 | The condition of a pair of Tungsten contacts after 1500 miles of use. | ||
| View original record | EFC. EP/Mx.11/F24.5.21. X 2894 AT X. 2894 TUNGSTEN CONTACTS. We send you herewith the remaining pair of Tungsten contacts, marked "2". These have run approximately 1500 miles, and although you will… | ||
| scan 045 | From EFC to FHC regarding a request from Mr. Royce to experiment with new tungsten points for battery ignition. | ||
| View original record | X.2894 To FHC. from EFC. EFC1/T1.6.21. X.2894 - TUNGSTEN POINTS. Mr. Royce wishes us to try on the battery ignition tungsten points which allow of a rubbing action during operation. The contact… | ||
| scan 046 | Instructions and drawings for scrubbing contact points, including a condenser contact, back-plate, and clamping bolt. | ||
| View original record | (R.R. 300 (12s) (S.C. 247. 28-1-16). H X.2894 49934 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Coverley Date: June 1 1921 Order No. SCRUBBING CONTACT POINTS Customer's No. Re: Drawing 1 - CONDENSER… | ||
| scan 047 | Instruction sheet with a schematic drawing of a screw-point mounting and blade. | ||
| View original record | (R.R. 300 (12s) (S.C. 247. 28-1-16). H 49935 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To_________________________________ 19 Order No.__________________________ Customer's No. 2… | ||
| scan 048 | Reports on the experimental running of tungsten contact points. | ||
| View original record | X.2894 To R & E. from EFC. c. CJ. & PN½ c. Eg & By. c. EP & Da. c. EWT. for R.R. Inc. EFC2/T6.6.21. X.2894 - TUNGSTEN CONTACT POINTS. Herewith please receive copies of my assistant's reports on… | ||
| scan 049 | Test report on tungsten contact points from the Tungsten Manufacturing Co. under various electrical conditions. | ||
| View original record | EFC. AA.62. 25th May, 1921. X. 2894 - TESTS OF TUNGSTEN CONTACT POINTS (P & Q) (TUNGSTEN MANUFACTURING CO. (2)). The first set of these points has now run for 500 hours under standard conditions on… | ||
| scan 050 | Experiment investigating the effects of sparking on tungsten points. | ||
| View original record | -2- Con d An hour or two of this sufficed to form a deep purple scale on the surfaces, while the surrounding area was covered with a white deposit. The run was continued for 45 hours, but without much… | ||
| scan 051 | Test report on tungsten contact points from Fansteel Co. U.S.A. after a 400-hour bench run. | ||
| View original record | EFC. AB.1 1.6.21. TEST OF TUNGSTEN CONTACT POINTS (V) FANSTEEL CO. U.S.A. (2) These points, fitted by us to the R.R. standard blade and screw, have completed 400 hours running on the bench under… | ||
| scan 052 | The ongoing testing of tungsten contacts. | ||
| View original record | X.2894 To Wd. from EFC. EFC7/T15.6.21. X. 2894 - TUNGSTEN CONTACTS. Answering your Wd1/NJ15.6.21, although tests of these points are in progress we are not yet in a position to give any opinion. Tests… | ||
| scan 053 | Follow-up memo regarding test results for Tungsten Contacts for Battery Ignition. | ||
| View original record | R.R.(1920)T.(S.H. 798.10-12-20) G. 1948 EFC. from Wd. F.R X 2894 Wd1/NJ15.6.21. X.2894 - Tungsten Contacts for Battery Ignition. I confirm mine Wd1/NJ30.4.21. We are this morning in receipt of a… | ||
| scan 054 | Parts from vehicles returned from America, evaluating the low tension contact maker, coil, and ballast resistance. | ||
| View original record | x2894 Extract from R2/G21.6.21. REPORT ON 4 EX JUST RETURNED FROM AMERICA. Low Tension Contact Maker. X.4275 X.1819 X.2894. Regarding the rocker, this has the rather serious defect of being very… | ||
| scan 055 | Extract regarding U.S.A. complaints about battery ignition systems and the reliability of tungsten versus platinum-iridium contact points. | ||
| View original record | X.2894 Extract from R8/G12.7.21. Re U.S.A. COMPLAINTS. BATTERY IGNITION. X.4275. X.3445. You will remember that we agreed to your fitting Bosch battery ignition provided a lengthy test proved the… | ||
| scan 056 | Extract concerning American Bosch ignition on 4EX, specifically the durability of platinum iridium points. | ||
| View original record | X 2894 M.S. Bks/100 (T) (S.H. 798, 10-12-20) G. 2948 Extract from Oy8-G 4.8.21 X.4275. RE AMERICAN BOSCH IGNITION on 4EX. X.1818. (2) PLATINUM IRIDIUM POINTS IN CONTACT BREAKER: X.186 X.2894. The… | ||
| scan 057 | Instruction sheet detailing further tests conducted on two different sets of tungsten contact points. | ||
| View original record | RR 238 (500 Bks.) (SF 152. 6-11-18.) MP 197880 X.2894. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C Order No.: A.B.18. Customer's No.: 1 X.2894. Further Tests of Tungsten Contact Points. Two further… | ||
| scan 058 | Instructions regarding the measurement and adjustment of spark-gap points. | ||
| View original record | RR 238 (500 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 2 19 Measuring all the spark-gaps, the points were showing a resistance of about one ohm.… | ||
| scan 059 | Instruction sheet detailing engine test results, specifically issues with misfiring and contact sparking over a 150-hour run. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 3 instead of 90°. This produced a rubbing action which could be distinctly seen on moving… | ||
| scan 060 | Test of tungsten points, noting discoloration, rust, and recommendations for the next test. | ||
| View original record | RR.238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Order No: Customer's No. 4 19 There was no perceptible resistance either before or after the test. The points were… | ||
| scan 061 | Instructions on using two condensers in parallel for ignition systems to improve sparking. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To ______________ 19__ Order No. ______________ Customer's No. 5. Two condensers in parallel. Various rough tests made… | ||
| scan 062 | Instructions for determining ideal condenser capacity by creating a test series. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 6 compared with the RR standard of about .20 mf, although their voltages are mostly 6, with… | ||
| scan 063 | Requesting feedback on the performance of a batch of tungsten contact points. | ||
| View original record | H. H. Ellis (100 T) (S.H. 798, 10-12-20) G. 2948 Hr. from EFC. X.2894. EFC4/T16.8.21. X.2894 - TUNGSTEN CONTACT POINTS. We should be glad to know at your convenience the result, if any, of the running… | ||
| scan 064 | Inquiring about the status and performance of tungsten contact points from a Delco Liberty ignition set. | ||
| View original record | To E. from EFC. X.2894 EFC3/T16.8.21. X.2894 - TUNGSTEN CONTACT POINTS. We should be glad to know, if you can trace these, exactly what happened to the standard battery ignition blade and screw fitted… | ||
| scan 065 | Further tests and experiments with tungsten contact points. | ||
| View original record | X 2894 To R. E. from EFC. c. CJ & FN. c. Ry & Da. c. Rg & EP. c. R.R. of America Inc. EFCS/T16.8.21. X. 2894 - TUNGSTEN CONTACT POINTS. X 3129. Herewith please receive copy of my assistant's report on… | ||
| scan 066 | The cause of roller rusting, suggesting it is due to oscillatory discharges and sparking. | ||
| View original record | Contd. -2- EPCG/T16.8.21. as our experiments have recently suggested to us that the condenser capacity might be increased a little to advantage. With reference to the rusting up of the roller, this… | ||
| scan 067 | Further tests of two sets of tungsten contact points supplied by the Fansteel Co. | ||
| View original record | EFC. AB.18 13th August, 1921. X.2894 - FURTHER TESTS OF TUNGSTEN CONTACT POINTS. Two further sets of tungsten points by the Fansteel Co. have been tested; one (AD) using a condenser with an earthing… | ||
| scan 068 | Test report on misfiring, contact sparking, and component degradation during a 150-hour run. | ||
| View original record | -2- Contd. for 150 hours during which time misfiring and contact sparking became worse. During the run the make ratio of the contacts had altered from the standard .5 to .83. This was probably due to… | ||
| scan 069 | Summary table of tests on tungsten contacts from various firms for high and low tension points. | ||
| View original record | X2894 16.8.21. X.2894 - TUNGSTEN FOR HIGH AND LOW TENSION POINTS X.3309. Ref. Letter | Firm. | Contacts or rods. | Description. | Remarks. ---|---|---|---|--- A | L.P.S. | C | L.T. contacts for… | ||
| scan 070 | Log sheet detailing tests and remarks on electrical contacts and rods from various suppliers. | ||
| View original record | -2- Contd. Ref. Letter. | Firm. | Contacts or rods. | Description. | Remarks. ---|---|---|---|--- H | Ind: Lamp & Wire Company. | C (.125" dia). | For L.T. contacts. | Fitted to blade and screw of… | ||
| scan 071 | Instruction sheet detailing the unsatisfactory performance of tungsten points after a 5,000-mile test. | ||
| View original record | RR/H (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.2894. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Col Harper 18-3-21 Order No. Customer's No. X.2894 re Tungsten points (AC.) After 5,000 miles test, these… | ||
| scan 072 | Performance of a U.S.A. Bosch condenser compared to mica condensers and recommending further testing for the Goshawk 11. | ||
| View original record | To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT. for R.R. Inc. X2894 Hs7/LG16.9.21. X 2570 CONDENSERS FOR BATTERY IGNITION. X 2275 X2894 We have been running 1.EX Car fitted with a… | ||
| scan 073 | Testing different condenser and tungsten point combinations for battery ignition systems. | ||
| View original record | X.2894. Extract from EFC2/T27.9.21. X.2512. CONDENSERS FOR BATTERY IGNITION. X.2894. As stated in Hs7/LG16.9.21, the combination of a Bosch condenser of .5 mf. and tungsten points is running on… | ||
| scan 074 | Design and materials for an inexpensive condenser for an ignition system. | ||
| View original record | To AFC. from R. Copy to C.G. " " HOR. " " HS. " " HY. X2894 NOV FO [STAMP: RECEIVED] X 2572 RE IGNITION SYSTEM. R1/CG/11/21. X2894 X3656 I consider it one of the most urgent pieces that you have in… | ||
| scan 075 | Investigations into various tungsten contact points for battery ignition systems. | ||
| View original record | To R & E. from EFC. c. CJ & FN. c. Rg. & Da. c. By. & EP. c. R.R. of America Inc. X2894 EFC1/T10.11.21. X.2894 - TUNGSTEN CONTACT POINTS. Please receive herewith copies of my assistant's reports on… | ||
| scan 076 | Technical report on testing paper and mica condensers, and tungsten contacts for ignition systems. | ||
| View original record | Contd. -2- EFC1/T10.11.21. In the latter half of the report, there is some indication that a paper condenser of similar capacity may be an improvement over a mica condenser, owing to the suggested… | ||
| scan 077 | The performance tests of Melin tungsten contact points. | ||
| View original record | A.F.H. 155-21: G. 3038 COPY. EFC. 19th Sept. 1921. AE.24. X.2894 - TESTS OF MELIN TUNGSTEN CONTACT POINTS (A.H.). This set has performed better than most of the other sets of tungsten points, having… | ||
| scan 078 | Test report on the performance of tungsten contacts when run on a lower voltage. | ||
| View original record | 2-1. Wright 1-9-21 G. 2000 COPY. EFC. AB.26. 6th Oct. 1921. X.2894 - TUNGSTEN CONTACTS RUN ON A LOWER VOLTAGE. For the above test, a set of points previously used on test cars were faced up and fitted… | ||
| scan 079 | Test report on tungsten contact points with double capacity at 6 volts to reduce sparking. | ||
| View original record | R.R. 285A (50 T/S H. 926. 10-5-21) G. 308 COPY. 7th Nov. 1921. EFC. AB.29. X.2894. TESTS OF TUNGSTEN POINTS WITH DOUBLE CAPACITY AND ON 6 VOLTS. X.2512. In order to see if sparking could be completely… | ||
| scan 080 | Tests of distributors and condensers, proposing further testing on American ignition sets. | ||
| View original record | -2- Contd. ran for over a month before the rollers required re-oiling as against about one week previously noted on a few occasions. Changes in the weather may account for this, however, as the other… | ||
| scan 081 | The trial of tungsten points for the Goshawk ignition system. | ||
| View original record | To RHC. from EFC. X.2894 g EFC1/T25.11.21. X.2894 - TUNGSTEN POINTS FOR GOSHAWK IGNITION. In accordance with Mr. Royce's request, would you kindly have prepared half a dozen Goshawk ignition contact… | ||
| scan 082 | Request for Goshawk II distributor contact points, specifying tungsten points from supplier Messrs. Melin over Messrs. Reynolds. | ||
| View original record | X2894g Wd. from EFC. c. to By/WER. EFC1/T1.12.21. X.4357 - "GOSHAWK II" DISTRIBUTOR CONTACT POINTS. X2894 Would you kindly arrange to obtain half a dozen sets of low tension contact rivets (D.50539)… | ||
| scan 083 | Carbon copy of a note regarding an order for low tension contact rivets and screws. | ||
| View original record | X.28948 ROY/F5/R. Den 7th 1921. 1/2 dozen sets of low tension contact rivets and screws D.50539/40 complete with tungsten points, as shewn on our blue prints enclosed herewith. Messrs. C. Melin & Co.,… | ||
| scan 084 | Request for a report on the behaviour of tungsten contact points on the Demonstration Car. | ||
| View original record | Col. Hr. from EFC. X2894 EFC1/LG23.12.21. X. 2894 - TUNGSTEN CONTACT POINTS. We should be glad to have your report as to the behaviour of the most recent set of tungsten contact points on the… | ||
| scan 085 | Telephone message regarding a C.A.V. battery and Tungsten Points on a School Car. | ||
| View original record | EFC. X.2894. 2.1.22. Telephone message from Col. Hr. C.A.V. Battery fitted to School Car - Sept. 15th 1921. Apart from the fact that the terminals are not satisfactory for fixing to the wires - they… | ||
| scan 086 | Letter from supplier C. Melin & Co. clarifying whether an enquiry for rivets and screws is for use with magnetos or battery work. | ||
| View original record | X. 2874Y Telegraphic Address: "REPLETE PHONE LONDON" Telephone: 4010 AVENUE. C. MELIN & Co., GLASS MERCHANTS & MANUFACTURERS. ESTABLISHED 1865. SECRETARIES AND AGENTS FOR THE AMALGAMATED GLASS BOTTLE… | ||
| scan 087 | The wear and performance of iridium-platinum versus tungsten ignition points on experimental cars. | ||
| View original record | Mr. Clark. ---------- X2894 4.1.22 X.3656 X.2894.. 25% iridium platinum points fitted to 4 EX appear to be burning. A good surface is maintained. No. of Miles run up to date is 1,415. Tungsten points… | ||
| scan 088 | Log sheet recording tests and remarks for tungsten contacts supplied by Tungsten Mfg. Co. and Fansteel Co. | ||
| View original record | X.2894. Ref letter.: S Firm.: Tungsten Mfg. Co. Contacts or rods.: C Description.: Tungsten contacts Fitted to blade & screw by T.M.Co. Date.: 15.8.21. Remarks.: (Marked 2) Expl. 1EX car. With Bosch… | ||
| scan 089 | Log of tests and remarks on ignition components from various firms. | ||
| View original record | Ref. letter. | Firm. | Contacts or rods. | Description. | Date. | Remarks. AC | Fansteel Co. | C | Tungsten contacts fitted by Fansteel Co. | 18.8.21 | Handed to Hr. for school car to repl Z. Failed… | ||
| scan 090 | Log tracking the specifications and testing history of ignition components supplied by Reynolds & Co. | ||
| View original record | 5 [Annotation in left margin spanning rows IPA to IPD: .125" dia.] | Ref.letter. | Firm | Contacts or rods. | Description. | Date. | Remarks. |… | ||
| scan 091 | Log sheet tracking parts or components, their specifications, and testing history. | ||
| View original record | -6- 11.1.24. Ref letter. | Firm. | Contacts or rods. | Description. | Date. | Remarks. IPM | Reynolds | C | .150" dia. 25% irido-platinum | 19.7.22. | Handed to GWH. for 1EX. See file. IPN (IPC) | " |… | ||
| scan 092 | Letter from C. Melin & Co. regarding samples and pricing for contact screws. | ||
| View original record | Telegraphic Address: "REPLETE PHONE LONDON." Telephone: 4610 AVENUE. X.28949/ (handwritten) C. MELIN & Co., GLASS MERCHANTS & MANUFACTURERS ESTABLISHED 1865. Secretaries and Agents for THE AMALGAMATED… | ||
| scan 093 | Test report on Tungsten Points with a Paper Condenser after 65 hours of running. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.C. Order No: P.B 44. Customer's No: X 2894. Test of Tungsten Points 4AG. With Paper Condenser. These points were run in conjunction with a paper condenser of… | ||
| scan 094 | Instruction sheet detailing the observation of increasing sparking and deterioration of contacts over time. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. Order No P.B.4J. Customer's No. X 2894 July. 24th 1922 after which there was only occasional sparking at the… | ||
| scan 095 | Requesting the fitting of tungsten points to Goshawk ignition levers for testing. | ||
| View original record | X.28949 To RHC. from EFC. EFC4/T3.8.22. X.2894 - TUNGSTEN POINTS We are sending you herewith four pairs, comprising D.50539/40, of tungsten contacts, two pairs of which are marked 'normal' on the… | ||
| scan 096 | 'Eska' tungsten contact points received from C. Melin & Co. to be fitted to a Goshawk vehicle. | ||
| View original record | X2894 EFC/T8.9.22. X.2894. X.3485. TUNGSTEN CONTACT POINTS One pair of tungsten points, labelled 'Eska', received from C. Melin & Co. have been handed to Hs. to be fitted to Goshawk. 4 G II 22.11.22… | ||
| scan 097 | Request for a report on the behaviour of 'Normal' and 'Eska' tungsten contact points for a Goshawk. | ||
| View original record | X2894 To Hs/TGW. from EFC. C. Hs. EFC3/T19.1.23. X. 2894 TUNGSTEN CONTACT POINTS FOR GOSHAWK Would you kindly let me have a report on the behaviour of the following two pairs of tungsten contact… | ||
| scan 098 | Endurance tests of Goshawk contact breaker and distributor, comparing rubbing blocks and testing tungsten points. | ||
| View original record | To R & E from EFC. c. CJ. & PN. c. By. &EP. c. Rg. & Da. X2894 EFC4/T15.2.23. X.2894 - TUNGSTEN CONTACT POINTS XJ485 Herewith please receive copies of two reports dealing with endurance tests of… | ||
| scan 099 | Endurance test report for a Goshawk distributor, focusing on bakelite rubbing block wear. | ||
| View original record | EFC. PB63. Oct 30th 1922. X.3984. ENDURANCE TEST OF GOSHAWK DISTRIBUTOR+ X.4357. This test was run mainly with the object of ascertaining the wear of the bakelite rubbing block on the contact breaker… | ||
| scan 100 | Test report on a distributor, detailing wear, corrosion, and changes in spring load and platinum point gap. | ||
| View original record | Contd. (2) Part of Dist. Before test. After test. Remarks. Spring 1.1 lbs. .78 lb. Load on points. Plat. point .021" .009" For .5 make gap. ratio. During the run the metal work inside the distributor… | ||
| scan 101 | Endurance test report for parts fitted to a Goshawk ignition system. | ||
| View original record | EFC. PB77. Jan 29th 1923. X.2894. X.4357. ENDURANCE TEST OF PARTS FITTED TO GOSHAWK IGNITION. The bench Goshawk ignition rig has completed a second run of 10,000 miles, this time fitted with the… | ||
| scan 102 | The wear of a bakelite block and corrosion of sparking points and a rotor after a 4,000-mile test. | ||
| View original record | -2- Contd. .021" i.e. .261" to .240" for the bakelite. With this block, however, what little fibre was wom away, was powdered into a light fluffy mass that thickly covered the bakelite lever, cam, and… | ||
| scan 103 | Handing over of a pair of 'normal' tungsten contact points for a Goshawk engine. | ||
| View original record | X2894 16.2.23. X.2894 - TUNGSTEN CONTACT POINTS We have today handed to Hs for Mr. Warwick one pair of 'normal' tungsten points for Goshawk. AM for 7.G.II. EFC. | ||
| scan 104 | The purchase of 'Eska' quality tungsten contact points for Goshawk ignition experiments. | ||
| View original record | X2894g To Wd. from EFC. EFC3/T15.5.23. Recd. 10.7.23. X. 2894 - TUNGSTEN CONTACT POINTS. Some time ago we obtained from Messrs. Melin, (see their letter of 9.1.22) four pairs of tungsten contact… | ||
| scan 105 | Endurance tests of a Goshawk contact breaker and distributor, comparing different rubbing blocks and testing tungsten contact points. | ||
| View original record | To R & E. from EFC. c. CJ. & PN. c. Ey. & EP. c. Rg. & Da. x2894 EFC4/T15.3.23. X. 2894 - TUNGSTEN CONTACT POINTS. 14357 Herewith please receive copies of two reports dealing with endurance tests of… | ||
| scan 106 | Supply and fitting of 'Eska' tungsten contact points for a 20 HP model. | ||
| View original record | To RHC. from EFC. X.2894. EFC6/T117.23. X. 2894 - TUNGSTEN CONTACT POINTS 20 H.P. We have now received four further sets of 'Eska' tungsten contact points. In the first instance we are supplying you… | ||
| scan 107 | Letter detailing the dispatch of an updated contact breaker lever and a higher temperature dynamo sentinel for a school car. | ||
| View original record | X 2894 To Hr. from EFC. EFC2/T17.7.23. RE SCHOOL CAR - 2 G.II. We are sending you herewith contact breaker lever and contact point with 'Eska' tungsten tips fitted by C. Melin & Co., (Ref. letter AQ),… | ||
| scan 108 | Fitting and testing of two sets of tungsten contact points for Goshawk chassis. | ||
| View original record | X.2894. To Hs/TMW. from EFC. EFC6/T31.8.23. X.2894 - TUNGSTEN CONTACT POINTS FOR GOSHAWK. We are handing you herewith two sets of lever and screw fitted with tungsten contact points. Will you kindly… | ||
| scan 109 | Fitting of tungsten contact points for a 20 HP model to chassis 3GII. | ||
| View original record | X2894 To RHC. from EFC. EFC2/T4.10.23. X.2894 - TUNGSTEN CONTACT POINTS FOR 20 H.P. With reference to attached copy of a note addressed to Mr. Warwick, we understand these points have been handed over… | ||
| scan 110 | Fitting one pair of tungsten contact points to chassis 3GII and another pair to chassis 7GII. | ||
| View original record | To RHC. from EFC. X.2894 EFCs/T11.10.23. X.2894 - TUNGSTEN CONTACT POINTS. We note you have fitted one pair of tungsten points to 3GII. Would you kindly have the other pair fitted to chassis 7GII.… | ||
| scan 111 | Confirming the fitting of tungsten contact points to specific chassis. | ||
| View original record | To EFC. from RHC. x2894 RHC6/LS.16.10.23 X.2894 - TUNGSTEN CONTACT POINTS. In reply to your EFC6/T11.10.23. we have fitted one pair of tungsten points to 7 GII.chassis. & 3 GII chassis. RHC. | ||
| scan 112 | The examination of Eska tungsten points on models 3GII and 7GII which are burning away. | ||
| View original record | X.2894.g EFC/T14.11.23. X.2894 - ESKA TUNGSTEN POINTS The Eska tungsten points on 3GII and 7GII have been examined and appear to be burning away rather badly, particularly those on 7GII. E.F.C. EFC. | ||
| scan 113 | Summary of reports on the Goshawk battery ignition distributor and contact breaker. | ||
| View original record | X2894 To R. from EFC. c. CJ. PN. c. EY. EP. E. c. Ds. EFC2/T25.2.24. X.4357 - GOSHAWK BATTERY IGNITION DISTRIBUTOR AND CONTACT BREAKER. X2894 Herewith please receive copies of my assistant's reports… | ||
| scan 114 | Bench test report on Goshawk ignition parts after a 10,000-mile endurance test. | ||
| View original record | EFC. PC.19. COPY Jan. 31st. 1924. X.2894. X.4357. BENCH TEST OF GOSHAWK IGNITION PARTS. This test was the bench equivalent of a 10,000 miles endurance test, run under standard conditions, and with a… | ||
| scan 115 | Inspection report on the wear and performance of Tungsten Points AQ and AR after road testing. | ||
| View original record | EFC. PC.20. Feb. 20th .1924. TUNGSTEN POINTS. AQ AND AR. Points AQ. These have run (up to time of inspection) 5,430 miles on 7GXI. Standard condenser fitted. Screw point:- All the surface has been in… | ||
| scan 116 | Preventing pip formation in electrical contacts by reversing current. | ||
| View original record | -2- P.C.20. The formation of a pip could probably be eliminated by reversing the current through the points periodically, but the trouble appears in the first place to be due to insufficient contact… | ||
| scan 117 | Test house report on tungsten contact points AC and AR. | ||
| View original record | EFC. FC.21. Feb 22nd, 1924. TEST HOUSE REPORT ON TUNGSTEN POINTS AC AND AR. The report from Mr. Warwick on the above points is to the following effect:- No trouble has been experienced with these… | ||
| scan 118 | The wear of standard Bakelite contact breaker rubbing blocks on various cars. | ||
| View original record | EFC. FC.22. Feb. 22nd. 1924. WEAR OF STANDARD (BAKELITE) CONTACT BREAKER RUBBING BLOCKS. The contact breaker rubbing blocks on all available cars have been measured. It has been ascertained from the… | ||
| scan 119 | Electrical experimental record sheet for Eska Tungsten Points. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEET. Eska Tungsten Points H.P. X. No. 2894 Date on. Location. Date Off. Remarks. Miles reading. Miles reading. Miles covered. Total miles. 14-7-23 In lab 5-10-23 Recd… | ||
| scan 120 | Recommendation to use tungsten points instead of platinum for battery ignition systems. | ||
| View original record | X2494 Extract from R2/M3.4.34. BATTERY IGNITION. X.3199 Tungsten points are better and more reliable and a fraction of the cost compared with platinum; throw away these when damaged. | ||
| scan 121 | Fitting the last set of Eska tungsten contact points designated AS. | ||
| View original record | X. 2894. To RHC. from EFC. Hs/TMW EFC3/T24.4.24. X. 2894 - TUNGSTEN CONTACT POINTS. Herewith we hand to you the set of Eska tungsten points designated AS. These are the last set available and it is… | ||
| scan 122 | Mileage report for Eska Tungsten Points fitted to two vehicles. | ||
| View original record | X2894 25.4.24. EFC. X. 2894. ESKA TUNGSTEN POINTS. Tungsten points AQ fitted to 7GII have run up to date 8,863 miles. Tungsten points AR fitted to 3GII have run up to date 1,957 miles. CAP. | ||
| scan 123 | Extract detailing the satisfactory performance of 'Eska' tungsten points following mileage tests. | ||
| View original record | X.2894. Extract from EFC3/T29.4.24. X.4396. X.3485. With regard to tungsten points, though we have not formerly had much success with these, the last batch we obtained, which are called "Eska"… | ||
| scan 124 | Electrical experimental record sheet for Eska Tungsten Points. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEET. Eska Tungsten Points. AQ X. No. 2894 Date on. | Location. | Date Off. | Remarks. | Miles reading start. | Miles reading finish. | Miles cover-ed. | Total miles.… | ||
| scan 125 | Report comparing the performance of platinum versus tungsten interrupter points, coils, and condensers. | ||
| View original record | Oy2-E-61126. *X2894 June 11th 1926. Mr. Basil Johnson, Rolls-Royce Ltd., London, England. (Copy for attention of Mr. F.H. Royce " " " " Works Committee " " " " Mr. Nadin. X4652 X4654 X2894 Dear Sir:… | ||
| scan 126 | Performance and testing of American Bosch and Delco coils and condensers. | ||
| View original record | Oy2-E-61126 -2- June 11th 1926. 2. Coils. On American Bosch ignitions it is usual for contacts to run 10,000 miles without attention, and 25,000 miles without replacement. The Bosch coil like the… | ||
| scan 127 | Inspection report on the wear of Eska Tungsten points from a Goshawk distributor after 11,587 miles. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.Y.B. Order No. WA52 Customer's No. X 2894 Eska Tungsten points AQ off chassis 76II These points have run altogether 11587 miles on a Goshawk distributor fitted to… | ||
| scan 128 | Instruction sheet detailing the condition and performance of engine contact points after a chassis test. | ||
| View original record | RR.218.(100.000 bks).|INST.28-6-20.|MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. 19 corresponding with the cavity in the screw point, when both are in position. The general… | ||
| scan 129 | Querying a change of distributor parts from a 6-GII to a 7-GII and requesting clarification to update records. | ||
| View original record | To RHC. from EFC. X 2894 EFC2/T13.8.24. X.2894. TUNGSTEN CONTACT POINTS. X.4357. BONE GREY FIBRE RUBBING BLOCK. We note from your RHC1/LS24.7.24. that the distributor fitted with contact breaker lever… | ||
| scan 130 | The mileage test of Ar. Eska Tungsten Points on chassis 3-GII. | ||
| View original record | EFC. X.2894. 14.8.24. AR. ESKA TUNGSTEN POINTS. These points have now completed 10,000 miles on chassis 3-GII, having done 10,538 miles up to date. HEW. | ||
| scan 131 | Electrical experimental record sheet for Eska Tungsten Points. | ||
| View original record | ELECTRICAL, EXPERIMENTAL RECORD SHEET. Eska Tungsten Points A.R. X. No. 2894 Date on. Location. Date off. Remarks. Miles reading Start. Miles reading Finish. Miles Covered Total miles 14-7-23 In lab… | ||
| scan 132 | The 10,000-mile performance of 'ESKA' tungsten points fitted to a 20 HP battery ignition system. | ||
| View original record | X2894 To R & E. from EFC. c. CJ. & PN. c. EY. EP. DA. EFC4/T20.8.24. X.2894 - "ESKA" TUNGSTEN POINTS FITTED TO OUR 20 HP. BATTERY IGNITION CONTACT BREAKER LEVERS AND SCREWS BY C. MELIN & CO. Our… | ||
| scan 133 | The performance and wear of Eska Tungsten distributor points after running for 11,587 miles on a 20 HP chassis. | ||
| View original record | EFC. EA.52. 26th June, 1924. ESKA TUNGSTEN POINTS AQ OFF CHASSIS 7-GII. These points have run altogether 11587 miles on a 20 HP. distributor fitted to 7-GII. Screw point. About 90% of the surface has… | ||
| scan 134 | Condition report on Eska Tungsten Points from chassis 3-GII. | ||
| View original record | EFC. WA.70. 20.8.24. ESKA TUNGSTEN POINTS (AR) OFF CHASSIS 3-GII. The condition of these points is much about the same, as the AQ points (see WA.52). On the screw point the metal or the tungsten has… | ||
| scan 135 | The removal of tungsten points on vehicle 6-GII after 10,000 miles for examination. | ||
| View original record | X2894 EFC. 4.11.24. X. 2894. RE TUNGSTEN POINTS A.S. tungsten points on 6-GII have now completed 10,000 miles and for the purposes of examination and report it is desirable that these should now be… | ||
| scan 136 | Instructions regarding the properties and performance of tungsten contact points. | ||
| View original record | RR 238 (150 BKS.) (SH57. 29-6-20.) MP 224355 X. 2894 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.H.B. Order No. WB 29 Customer's No. X 2894 Date: 7-5-'25 Tungsten contact points The following tabulated items… | ||
| scan 137 | Instructions discussing the performance of contact points, comparing US and UK results, and suggesting a bench test for new larger tungsten points. | ||
| View original record | RR 239 (100 BKS.) (BH57-29-6-20.) MP 224355 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. 2 Customer's No. not so bad if the contact faces are carefully trued up initially and bed together on contact.… | ||
| scan 138 | Inspection report on the condition of Tungsten distributor points after 13,560 miles of use. | ||
| View original record | RR 238 (100 BKS.) (SH57 29-6-20.) MP 224355 X. 2894 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.b. Date: 25-5-1925 Order No.: WA 111 Customer's No.: X 2894 A.S. Tungsten points on 6GII. These points have… | ||
| scan 139 | The wear and condition of a screw point after 10,000 miles, comparing it to standard platinum points. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS) SH57.29-6-20.) MP 824359 To Order No. 2 Customer's No. Screw point Wear - about 50% Surface fair only, also discoloured the same as the lever point.… | ||
| scan 140 | Mileage and wear report on an experimental bone grey fibre rubbing block and AS tungsten points from chassis 6-G-II. | ||
| View original record | X2894 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.H.B Order No. WB 22 Customer's No. X 2894 X 4646 Bone grey-fibre rubbing block (1ST Sample) and AS Tungsten points off Chassis 6 G II. The total mileage of… | ||
| scan 141 | Instruction sheet detailing the condition and advantages of tungsten points compared to platinum. | ||
| View original record | RR 238 (150 BKS.) (BH57:29-6-20.) MP 224355 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. (2) Customer's No. 19 The tungsten points have not been reported troublesome at all throughout the run, their… | ||
| scan 142 | Log sheet detailing the history and remarks for Tungsten Contact Points. | ||
| View original record | Y 2894 -7- X.2894 - TUNGSTEN CONTACT POINTS. Ref. letter. | Firm. | Contacts. | Description. | Date. | Remarks. AL | Melin | C | L.T. for Gos. ignition. | 11.9.22. | Normal to RHC. for 7GII Lost.… | ||
| scan 143 | Electrical experimental record sheet for Eska Tungsten Points AS. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. Eska Tungsten Points AS X N: 2894 Date on. | Location. | Date off. | REMARKS. | Miles reading. start. | Miles reading. finish. | Miles covered. | Total miles.… | ||
| scan 144 | The condition of Eska Tungsten ignition contact breaker points after completing 15,853 miles on a chassis. | ||
| View original record | X2894 To R. & E. from EFC. c. CJ. & FN. c. Da. BY. Wor. c. EP. EFC4/T19.6.25. X. 2894. ESKA TUNGSTEN POINTS. Further to our EFC4/T20.8.24, and finally as regards tungsten ignition contact breaker… | ||
| scan 145 | Arguing for the use of tungsten points over platinum points due to their lower price and replaceability. | ||
| View original record | X2894 To EFC. from R. c. CJ. c. EY. c. HS. R2/M3.7.25. X.2894. TUNGSTEN POINTS. I understand from your latest reports that you consider there is no difference in life in tungsten or platinum points.… | ||
| scan 146 | Sourcing, testing, and performance characteristics of tungsten points. | ||
| View original record | To R. from EFC. c. CJ. c. BY. X2894 EFC9/T8.7.25. X.2894. TUNGSTEN POINTS. Reference your note R2/M3.7.25. A further dozen sets of tungsten points are being obtained and these will be of rather larger… | ||
| scan 147 | Confirming a change in diameter for tungsten contact points and an order from Messrs. Melin. | ||
| View original record | X2894 To BY/RD. from EFC. EFC8/T8.7.25. X.2894 - TUNGSTEN CONTACT POINTS This will confirm that you are having details made of battery ignition tungsten contact points, of diameter .175" in place of… | ||
| scan 148 | Request to obtain 12 sets of Tungsten Contact Points from Johnson Matthey's for testing. | ||
| View original record | x2894 C. EFC. BY/RD2/ML.9.7.25. X.2894 - TUNGSTEN CONTACT POINTS. Y46462 Would you please obtain 12 sets of Contact Points to D.51047/8, prints herewith, from Johnson Matthey's for the Experimental… | ||
| scan 149 | Procedure for testing new tungsten ignition contact points. | ||
| View original record | To RHC. from EFC. EFC2/T25.8.25. X2894 [handwritten] X.2894. TUNGSTEN POINTS. We have obtained from W.H. Reynolds 1 doz. battery ignition contact points and contact point screws with tungsten… | ||
| scan 150 | Request to have tungsten contact points fitted to battery ignition contact breaker levers. | ||
| View original record | To Wd. from EFC. Y2894 EFC1/T27.8.25. X. 2894 - TUNGSTEN CONTACT POINTS Herewith one dozen battery ignition contact breaker levers and one dozen tungsten contact breaker points. Will you kindly… | ||
| scan 151 | Cover note regarding an attached letter from Johnson Matthey & Co. Ltd. about Tungsten Contact Points. | ||
| View original record | E.F.C. X2894 Wd/Ms7/P. 11.9.25. X.2894 - TUNGSTEN CONTACT POINTS. With reference to your note EFC1/T27.8.25, please note the attached letter received from Johnson Matthey & Co.Ltd., London. Wd/Ms. MP | ||
| scan 152 | Letter from Johnson Matthey & Co. regarding the fitting of Tungsten Points to levers, noting one broke in the process. | ||
| View original record | TELEGRAMS, "MATTHEY, SMITH, LONDON" ALL CODES USED. TELEPHONE, HOLBORN 6830/8 (9 LINES). JOHNSON MATTHEY & Co, LIMITED. HEAD OFFICES, 73/83, HATTON GARDEN, MELTERS & ASSAYERS TO THE BANK OF ENGLAND.… | ||
| scan 153 | Fitting rubbing blocks to levers that have already been fitted with tungsten contact points. | ||
| View original record | To RHC. from EFC. X2894 EFC5/T11.9.25. X.2894 - TUNGSTEN CONTACT POINTS. Herewith we hand to you one doz. levers which have now been fitted with tungsten contact points. Will you please have these… | ||
| scan 154 | The fitting of tungsten points to contact breaker levers for specific chassis. | ||
| View original record | To RHC. from EFC. c. Mr. Warwick. X2894 EFC5/T26.9.25. X. 2894 - TUNGSTEN POINTS. We send you herewith four sets of contact breaker levers and points, fitted with tungsten contact points. Will you… | ||
| scan 155 | Changes to tungsten point experiments on specific chassis. | ||
| View original record | To RHC. from EFC. c. Mr. Warwick. x2894 EFC3/T1.10.25. X.2894 - TUNGSTEN POINT EXPERIMENTS. Further to our EFC5/T26.9.25, we have now put coil FP.1 on chassis 9-GIII. Therefore we cancel the… | ||
| scan 156 | The incorrect installation of both a finer primary coil and tungsten points on chassis 9-GIII. | ||
| View original record | To RHC. from EFC. X2894 EFC2/T13.10.25. X.2894 - TUNGSTEN POINTS. You may not have noticed that original instruction for putting tungsten points on 9-GIII was cancelled by our EFC2/T1.10.25, in view… | ||
| scan 157 | Results of a 10,000-mile bench test on large diameter tungsten contact points. | ||
| View original record | RR 239 (150 BKS.) (SH57. 20-6-20.) MP 224359 X.2894. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.B. Order No. WB 54 Customer's No. X 2894 Date 28-10-1925 Large Diameter Tungsten contact points (10000 mile… | ||
| scan 158 | The oxidation of lever and screw points, concluding their general condition after testing is good compared to standard platinum. | ||
| View original record | RR 238 (150 BKS.) (BH57.20-6-20.) MP 224355 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. 2. Customer's No. The lever point does not appear to have suffered from oxidation appreciably, whilst the… | ||
| scan 159 | Requesting a progress update on making battery ignition tungsten contact points spherical. | ||
| View original record | To RHC. from EFC. X2894 EFC1/T&.11.25. X.2894 - TUNGSTEN POINTS. Recently we handed to you four battery ignition contact point screws fitted with a larger dia. tungsten points. for the purpose of… | ||
| scan 160 | Experimental record sheet for the testing of larger diameter tungsten points. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Tungsten points (LD) Larger diameter Date on | Location | Date off | REMARKS | Miles reading Start. | Miles reading Finish. | Miles covered. | Total… | ||
| scan 161 | Requesting the doming of three used larger diameter tungsten contact points. | ||
| View original record | To RHC. from EFC. EFC4/T14.1.25. X2894 RE TUNGSTEN POINTS X.2894. Herewith we hand to you three more larger dia. tungsten contact points. These have already been partly used. Would you kindly have… | ||
| scan 162 | 10,000-mile bench test for large diameter tungsten contact points. | ||
| View original record | RR 238 (150 BKS.) (BHST. 29-8-25.) MP 224359 ROLLS-ROYCE LTD. INSTRUCTIONS. X2894 To: E.J.b. Date: 14 - 1 - 1926 Order No. WB72 Customer's No. X2894 Large diameter tungsten contact points with screw… | ||
| scan 163 | The results of mileage tests conducted on tungsten points for ignition systems. | ||
| View original record | Expt. Report. Exp.No. 2894. EFC4/T4.2.26. To R. from EFC. c. CJ. BJ. c. Ds. E. c. Wor. Fg. c. EP. EV. TUNGSTEN POINTS Further to our EFC9/T8.7.25, experiments re these tungsten points are still in… | ||
| scan 164 | Extract discussing tests on Remanol encased coils and tungsten contact points. | ||
| View original record | X2894 Extract from EFC2/T4.3.26. (To R) RE REMANOL ENCASED COILS. X4079 ----------- Tests on tungsten contact points are proceeding (with coils with standard windings) independently of the tests of… | ||
| scan 165 | The battery ignition system of chassis 10-GIII after 2948 miles. | ||
| View original record | X.2894 Extract from GWHL/RP12.4.26. Report on chassis 10-GIII after 2948 miles. Battery ignition. X.5690, X.2894, X.5680. Improved ventilation to distributor, window in head and hole in base… | ||
| scan 166 | Fitting of tungsten contact points to ignition breaker levers and standardizing the process. | ||
| View original record | To Wd. from EFC. X 2894 EFC2/T13.4.26. X.2894 - TUNGSTEN CONTACT POINTS. Herewith we hand to you one dozen used battery ignition contact breaker levers and point screws. It is desired to have these… | ||
| scan 167 | Supply of domed points and requesting the return of a sample screw from Messrs. Reynolds. | ||
| View original record | Contd. -2- EFC2/T13.4.26. absolutely flat surfaces, owing to the difficulty of obtaining correct bedding. We would, however, like the points to be supplied to us with this doming already done and in… | ||
| scan 168 | Chassis 10-GIII after 7526 miles, detailing issues with the battery ignition system and contact points. | ||
| View original record | X2894 Extract from GWH/2/FP.23.4.26. Report on Chassis 10-GIII after 7526 Miles. Battery ignition. X.4357. X.3485. X.5680. Improved ventilation to distributor, window in head and holes in base.… | ||
| scan 169 | Experimental record sheet for large diameter tungsten points. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Diameter Tungsten points. Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total… | ||
| scan 170 | Complaint regarding the excessive doming on tungsten contact points, resulting in their return to the supplier. | ||
| View original record | To Wd. from EFC. X2894 EFC2/T1 3.5.26. X.2894 - TUNGSTEN CONTACT POINTS. We have now received the one doz. battery ignition contact breaker levers and point screws fitted with tungsten points.… | ||
| scan 171 | The required doming of tungsten contact points on levers to accommodate for potential mis-alignment. | ||
| View original record | Contd. -2- EFC2/113.5.26. points on the levers are apparently slightly domed as a natural result of the grinding, and the average amount of doming on these levers is about the amount that was required… | ||
| scan 172 | Request for a gauge to be made for tungsten contact points, referencing a previous design. | ||
| View original record | RHC. from EFC. EFC3/T18.5.2.6. X2894 X.2894 - TUNGSTEN CONTACT POINTS. In order to get the correct amount of doming on some further tungsten points which we are obtaining, it is desired to have a… | ||
| scan 173 | Requesting to book in 12 Tungsten Contact Screws received from W.H. Reynolds & Co.Ltd. | ||
| View original record | X.2894 My/Alt. c. to EFC. c. to WFH. Wd/JT19/HP27.5.26. X.2894 - TUNGSTEN CONTACT POINTS - order 55414. Will you kindly book in in the usual way 12 Tungsten Contact Screws which have been received per… | ||
| scan 174 | Comparative performance of British-sourced versus American-sourced tungsten points for ignition systems. | ||
| View original record | To Wd. from EFC. X2894 EFC3/T5.6.26. RE TUNGSTEN POINTS. We have never been able to obtain the same good results with the tungsten points which have been obtained for us in this country that we can… | ||
| scan 175 | Continued letter discussing ignition contact breaker point failures and requesting spare parts and material information for further testing. | ||
| View original record | Contd. -2- EFC3/T5.6.26. willsee that these have gone very badly, in fact they had to be dispensed with after that number of miles, as misfiring began to occur. We should like you if possible firstly… | ||
| scan 176 | Performance comparison of platinum and tungsten interrupter points, coils, and condensers. | ||
| View original record | 3 Ho COPY X2894 TO HS. Oy2-E-61126 June 11, 1926. Handwritten annotations: This is equivalent to your Y E F C By Hs 24 JUN 1926 x4657 x4652 x2894 (RECEIVED 28-6-26) X4278 Mr. Basil Johnson,… | ||
| scan 177 | The performance and testing of ignition coils, condensers, and platinum points. | ||
| View original record | Oy2-E-61126 -2- June 11, 1926. 1. d. Envelope III contains platinum points taken from 61-LC for replacement at 1165 miles. 2. Coils. On American Bosch ignitions it is usual for contacts to run 10,000… | ||
| scan 178 | Offer from Johnson Matthey & Co. Limited to undertake the analysis of special contacts, such as American Tungsten. | ||
| View original record | EFC from ROY. ----------------- X2894 ROY10/MG19.6.26 ----------------- Messrs. Johnson Matthey & Co.Limited advise they will be only too pleased to undertake the analysis of any special Contacts,… | ||
| scan 179 | Letter discussing the comparative performance of platinum versus tungsten for interrupter points, coils and condensers. | ||
| View original record | To Oy. from EFC. c. RJ. EX. WD. X 2894 EFC2/T30.6.26. x4652 x1680 We have seen a copy of your letter CY2-Ell.6.26, with reference to the question of platinum versus tungsten interrupter points, coils… | ||
| scan 180 | Technical discussion on ignition system components including coils, condensers, and contact breaker points. | ||
| View original record | Contd. -2- EC2/T30.6.26. (e) We would like you to help us in this direction by supplying us with a representative U.S. contact breaker unit with tungsten points, and with, say, half a dozen point… | ||
| scan 181 | Ignition system tests comparing U.S. tungsten points and Remy equipment with standard platinum points. | ||
| View original record | EFC2/T30.6.26. -3- Contd. Two recent tests we have made have shewn that U.S. tungsten points on U.S. contact breaker, but for the rest with our exact and complete standard chassis ignition, including… | ||
| scan 182 | Instruction to fit tungsten contact points and ballast resistances to chassis 10-GIII. | ||
| View original record | R.H.C. X2894 To Mr. from EFC. EFC4/T21.7.26. RE CHASSIS 10-GIII. When 20 HP. chassis 10-GIII in re-erected will you kindly have fitted the tungsten contact points herewith. We would also like to have… | ||
| scan 183 | Experiments and results on tungsten contact points. | ||
| View original record | To Wd. from EFC. X2894 EFC2/T19.8.26. X.2894 - TUNGSTEN CONTACT POINTS. In connection with our experiments on tungsten contact points we are handing you herewith four sets of tungsten contact lever… | ||
| scan 184 | The inspection and comparative analysis of different types of contact points. | ||
| View original record | Contd. -2- EFC2/T19.8.26. impression is that the material of one set of points, say the Remy, is alloyed with some other material. We do not want Messrs. Reynolds to make an analysis or to disturb the… | ||
| scan 185 | Letter confirming receipt of a query about platinum versus tungsten interrupter points and advising that representative American units will be sent. | ||
| View original record | e f c X.2894 Oy8-E-71926 July 19, 1928. Mr. Basil Johnson, Rolls-Royce, Ltd., London, England. (Copy for attention of E.F.C.) X. 4652 Dear Sir: We are in receipt of your letter of June 30th,… | ||
| scan 186 | Covering memo from EFC to EP attaching other documents concerning Platinum Interrupter Points, Coils and Condensers. | ||
| View original record | X2894 To EP. from EFC. EFC6/T11.8.26. X4652 We attach copy of our memo. EFC2/T30.6.26 in answer to OY2/E11626. also copy of Mr. Olley's further note Oy8/E.71926. in connection with Platinum… | ||
| scan 187 | From R. to EFC. with a list of questions regarding ongoing electrical experiments on ignition components. | ||
| View original record | To EFC. from R. X-2894 RL/M16.8.26. X.4275 X.2894 I should be very glad to know if you are sufficiently forward with your electrical experiments to come and see me any day after this week. The points… | ||
| scan 188 | Internal memorandum regarding Tungsten Points and referencing previous correspondence. | ||
| View original record | X2894 To R. from EFC. c. RS. EFCl/T19.8.26. RE TUNGSTEN POINTS. X2894 With reference to your FL/M16.8.26 to which I am shortly replying, in the meanwhile with regard to my reply to OY's memo. I think… | ||
| scan 189 | Confirming the dispatch of two copies of photomicrographs for Tungsten contacts. | ||
| View original record | Y2894 M484. EFC. H15/EA20.8.26. Laboratory. Herewith two copies of each of the photo-micrographs Nos.A492, A493, A494 and A495. The Tungsten contacts which these represent have already been handed to… | ||
| scan 190 | Letter regarding ignition contact points, discussing a meeting and comparing results of platinum versus tungsten points. | ||
| View original record | To R. from EFC. EFCL/T20.8.26 X2894 IGNITION CONTACT POINTS. X4657 X2894 X4275 Answering your RL/M16.8.26, as matters stand I had arranged for the completion of my annual holiday during next week… | ||
| scan 191 | Comparative tests of ignition system components including platinum and tungsten points. | ||
| View original record | Contd. -2- EFCL/T20.8.26. We have in progress a systemmatic set of comparative tests of (a) Platinum, (b) English tungsten (c) U.S.A. tungsten points, working on - (1) Our present standard ignition… | ||
| scan 192 | Temperature-current tests comparing an American Bosch condenser with an in-house standard. | ||
| View original record | Contd. -3- EFC1/T20.8.26. temperature-current tests (on 200 volts A.C.) on a condenser of the American Bosch ignition set in which it was shewn to be distinctly leaky and it was at the time compared… | ||
| scan 193 | Letter from W.H. Reynolds & Co. discussing the examination of tungsten contacts, noting pitting, oxidation, wear, and purity. | ||
| View original record | X.2894 COPY W.H. REYNOLDS & CO. KEY HILL DRIVE, BIRMINGHAM. 27th August, 1926. Ref. No.5887. Messrs. Rolls-Royce Ltd., Derby. X 4284 Gentlemen, In reply to your letter ref. Wd13/NJ20826. We have… | ||
| scan 194 | Communications with suppliers about the results for Tungsten Contact Points. | ||
| View original record | X2894 EFC. from Wd. Wd1/NJ28.8.26. X.2894 - Tungsten Contact Points. The remarks in yours EFC2/T19.8.26 were duly communicated to Johnson, Matthey & Co. and Reynolds & Co. and we are this morning in… | ||
| scan 195 | Letter forwarding a Certificate of Assay for tungsten contact points from Johnson, Matthey & Co. Ltd. | ||
| View original record | X 2894 EFC.from Wd. Wd5/NJ1.9.26. X.2894 - Tungsten Contact Points. I confirm mine Wd1/NJ28.8.26. Herewith I send you Certificate of Assay from Johnson, Matthey & Co.Ltd. dated 31st ult. You will note… | ||
| scan 196 | Certificate of Assay for two samples of Tungsten Contact Points. | ||
| View original record | Registered Reference No. RB 32/409 JOHNSON, MATTHEY & Co LIMITED, Assayers & Melters. TO THE BANK OF ENGLAND. HIS MAJESTY'S MINT, &c. Telephone, Holborn 6830/8 Telegrams, "Matthey, Smith, London"… | ||
| scan 197 | Analysis and comparison of Remy and RR-Reynolds tungsten contact points. | ||
| View original record | To Wd. from EFC. X2894 EFC4/T1.9.26. TUNGSTEN CONTACTS. X4284 We have noted the result of Messrs. Johnson'Matthey's assay, viz. that the tungsten contact points in both cases of Remy and RR-Reynolds… | ||
| scan 198 | Letter confirming the shipment of two special clockwise distributor heads with a detailed parts list. | ||
| View original record | x 2894 ACR-1857 Sept. 7, 1926 Rolls-Royce, Ltd. Derby, England. Gentlemen: X1080 X2894 Referring to your letter of June 20th, reference EFC2/T20.6.26 and our letter Oy-E-71926, we are today arranging… | ||
| scan 199 | Parts list continuation page detailing washers, nuts, bolts, and studs with their corresponding quantities. | ||
| View original record | -2- Rolls-Royce, Ltd. Sept. 7, 1926 K-4404 Plain Washer for Coil Bracket 2 Off K-4506 Lock " " " 2 " K-4506 " " " Distributor casing 8 " K-4508 " " " Coil Bolts 2 " K-4209 Nut for Gears on Drive Shaft… | ||
| scan 200 | Scheme for systematically observing the life of ignition contact points using various component combinations. | ||
| View original record | X2894 To E. from EFC. EPC3/T8.9.26. LIFE OF IGNITION CONTACT POINTS. X2894 X4652 In accordance with a scheme which we have arranged of systemmatically observing the results on contact point life… | ||
| scan 201 | Electrical experimental record sheet for large diameter tungsten contact points. | ||
| View original record | X 2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Dia Tungsten Contact points Date on. | Location. | Date off. | REMARKS. | Miles Reading Start. | Miles Reading Finish. | Miles covered.… | ||
| scan 202 | List of suggestions for improving the operation of platinum or tungsten contact points. | ||
| View original record | X2894 EFC7/T1 3.9.26. VARIOUS SUGGESTIONS FOR IMPROVEMENT OF OPERATION OF PLATINUM OR TUNGSTEN CONTACT POINTS. X4652 (10) Alter position of contact breaker points in relation to cam. (11) Running… | ||
| scan 203 | Communications with W.H. Reynolds & Co. regarding the supply and modification of Tungsten Contacts for contact breakers. | ||
| View original record | EFC. from Wd. X-28940 15/9/26 Wd3/NJ15.9.26. Tungsten Contacts. Upon receipt of yours EFC4/T1.9.26, we communicated with W.H.Reynolds & Co. sending them the Remy and RR-Reynolds contact breakers you… | ||
| scan 204 | Log sheet detailing the testing of large diameter tungsten points on a 40/50 chassis. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Diameter Tungsten points Date on. | Location. | Date off. | REMARKS. | Miles reading START. | Miles reading FINISH. | Miles covered. | Total… | ||
| scan 205 | Modifications and testing of the battery ignition contact breaker unit. | ||
| View original record | X2894 To R. from EEC. C. E. BJ. S. W. EFC3/T18.9.26. RR.BATTERY IGNITION CONTACT BREAKER UNIT X8690 X2894 20 HP. and 40/50 HP. X8790 X4284 It has been suggested that we might have a felt packing… | ||
| scan 206 | Letter to a customer regarding the supply and testing of experimental ignition components. | ||
| View original record | X2894 EFC2/T. 7th October, 1926. Mr. G.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, The crate of FA.11 plates has now arrived. We are sending you privately :- X8680 (1) Finer… | ||
| scan 207 | Re-fitting of used battery ignition contact breaker components with new tungsten points. | ||
| View original record | X2894 To Wd. from EFC. EFC1/T28.10.26. RE TUNGSTEN POINTS. Herewith we hand you half a dozen battery ignition contact breaker levers and half a dozen contact breaker screw points, all at present with… | ||
| scan 208 | 10,000-mile bench test on tungsten ignition contact points and a request for a follow-up test with platinum points. | ||
| View original record | To Wd. from EFC. V2894 EFC/T30.10.26. CONTACT POINT EXPERIMENTS. X4652 Herewith we hand to you one Remy ignition contact breaker lever and screw at present carrying the original tungsten points with… | ||
| scan 209 | Record of drawing numbers for Tungsten Points obtained from the Drawing Office. | ||
| View original record | X2894 9.11.26. X. 2894. TUNGSTEN POINTS Drawing Nos. obtained from D.O. to-day D.51407/8. EFC. | ||
| scan 210 | Request for specific experimental electrical parts from chassis 5-EX, with instructions to scrap other non-standard parts. | ||
| View original record | x 2894 To Hm. From Hs. Hs/LG16.12.26. CHASSIS 5-EX. x180 x780 We should be glad to receive the following electrical experimental parts off 5-EX as soon as convenient :- (1) Tungsten contacts on… | ||
| scan 211 | Incorrect doming on battery ignition tungsten contact breaker levers, requesting they be ground flat. | ||
| View original record | To RHC. from EFC. X2894 EFC3/T21.12. 25. BATTERY IGNITION TUNGSTEN CONTACT POINTS. X. 2894. Herewith we hand to you six battery ignition contact breaker levers fitted with tungsten contact points.… | ||
| scan 212 | Despatch of contact breaker levers fitted with tungsten and platinum points for inspection. | ||
| View original record | X2894 To Wd. from EFC. c. Despatch Stores. EFC5/T24.12.26. RE TUNGSTEN AND PLATINUM POINT TESTS. Herewith we hand to Stores a number of contact breaker levers and screws fitted with platinum and… | ||
| scan 213 | Short summary report on tests of platinum and tungsten battery ignition contact breaker points. | ||
| View original record | To R. from EFC. c. to BJ. PN. c. to E. Da. c. to Ey. Wor. c. to EP. OX. NRC BATTERY IGNITION CONTACT POINTS. SHORT SUMMARY OF REPORT EFC1/T24.12.26. This is a report, with details attached, on a… | ||
| scan 214 | The comparative testing of platinum, U.S.A. tungsten, and English tungsten for battery ignition contact points. | ||
| View original record | To R. from EFC. c. to BJ. PN‡ c. to E. Da. c. to By. Wor. c. to EP. OY. BATTERY IGNITION CONTACT POINTS. In our EFCl/T20.8.26, we reported as follows :- "Comparing platinum points with English… | ||
| scan 215 | The comparative testing of tungsten contact points from Delco-Remy and Messrs. Reynolds. | ||
| View original record | Contd. -2- EFCl/T24.12.26. Since that time the systematic set of comparative tests referred to has been completed (with one exception of little moment) and a number of additional comparisons have been… | ||
| scan 216 | Bench tests comparing different contact point materials and ignition arrangements. | ||
| View original record | -3- Contd. effect on the contact points as we have obtained with both U.S.A. and British tungsten fitted to the Delco-Remy contact breaker. We have also made the experiment (No.18) of platinum points… | ||
| scan 217 | Comparative tests on ignition system components, including coils, condensers, and contact breaker points. | ||
| View original record | -4- Contd. Nos. 7 and 8 were run with the finer primary coil, double ballast resistance and standard RR. condenser. No.14 was run with a previous standard coil, standard ballast resistance with… | ||
| scan 218 | Spring testing for contact breakers, comparing the current design against a Delco-Remy model. | ||
| View original record | -5- Contd. Apparently there was a slight improvement, these giving the best results in their respective classes, but the improvement may have been due to the increased mechanical contact pressure… | ||
| scan 219 | Comparison of Delco-Remy contact breakers and internal designs, with details of ongoing ignition system tests. | ||
| View original record | -6- Contd. Another point of difference between the Delco-Remy contact breaker and our own, which perhaps has not beens sufficiently pointed out previously, is that in their case the contact lever is… | ||
| scan 220 | Ignition system tests, including findings on misfiring, the effect of oil on platinum points, and an analysis of the Delco-Remy ignition system. | ||
| View original record | -7- Contd. previous standard RR. ignition conditions, one has completed its 10,000 miles on 9-GIII and the other has completed 8,000 miles on 5-EX, being removed when the car was sold. Trimming was… | ||
| scan 221 | Tests on platinum points. | ||
| View original record | 23.12.26. DETAILS OF TESTS. Tests on Platinum Points. No.1. Conditions - RR. previous standard. Large pip formed on lever point, after 7,600 miles; partially filed away to maintain regular sparking.… | ||
| scan 222 | Results of various tests conducted on tungsten points. | ||
| View original record | -2- Contd. Tests on Tungsten Points. No. 2. Conditions - RR. previous standard + except for the tungsten points. These worked for 9500 miles satisfactorily then failed, owing to the lever point… | ||
| scan 223 | List of continued test results for various ignition system configurations and components. | ||
| View original record | -3- Contd. No.11. Conditions - RR. previous standard, but with tungsten points, and run with distributor removed, H.T. spark taking place on one gap. Condition fair only, but somewhat better than… | ||
| scan 224 | The performance and wear characteristics of different ignition contact point samples. | ||
| View original record | To OY. from EFC. c. to R. c. to Ry. X2894 EFC5/T31.12.26. IGNITION CONTACT POINTS. X4275 x4682 Further to our report EFC2/T24.12.26 and with particular and further reference to Mr. Olley's note… | ||
| scan 225 | Report classifying the performance of ignition contact points based on material, system, and presence of oil vapour. | ||
| View original record | Contd. -2- EFCB/T31.12.26. by running tungsten points on the Delco-Remy contact breaker with otherwise our own ignition system. Sample in Envelope III. The evidence of the screw point in this case has… | ||
| scan 226 | Specifications and measurements for battery ignition tungsten contact points. | ||
| View original record | X2894 TO EFC. FROM RHC. RHC1/BE.5.1.27. BATTERY IGNITION TUNGSTEN CONTACT POINTS X.2894 Herewith please receive contact points which have been ground flat in accordance with your instructions.… | ||
| scan 227 | Requesting an alteration to drawing D51407 for the doming of battery ignition points. | ||
| View original record | X2894 To EY/RD. from EFC. EFC8/T5.1.27. DOMING OF BATTERY IGNITION PLATINUM & TUNGSTEN POINTS. DRG. NoD51407. XC652 We would like to have this drawing altered to a doming dia. of 3.875" in place of… | ||
| scan 228 | Mechanical stiffness of RR versus Remy battery ignition contact points. | ||
| View original record | X2894 To EFC. from E. cc BJ. E4/M6.1.27. BATTERY IGNITION CONTACT POINTS. X.2894. X.4652 X.4275. In reply to EFC4/T31.12.26., we should be interested to see the sample points. With regard to the… | ||
| scan 229 | Dispatch of sample battery ignition contact points and a Delco-Remy distributor. | ||
| View original record | X2894 To E. from EFC. EFC4/T10.1.27. BATTERY IGNITION CONTACT POINTS. X4275 Referring to your E4/M6.1.27, we are to-day despatching to you the sample points, as requested. It is also suggested that it… | ||
| scan 230 | The despatch of contact breaker levers and screws for inspection. | ||
| View original record | To D/BP. from EFC. c. Despatch Stores. X2894 EFC3/T10.1.27. CONTACT BREAKER POINTS. We are sending into the Stores for despatch to Mr. Elliott at West Wittering for his inspection, a number of contact… | ||
| scan 231 | Performance of battery ignition contact maker tungsten points compared to Delco Remy parts. | ||
| View original record | X2894 EFC. } FROM R. To E. HS. } (At Le Canadel). RS/M7.1.27. DESPATCHED FROM WW. 10.1.27. c. to BJ. WOR BY. BATTERY IGNITION - RR. CONTACT MAKER - TUNGSTEN POINTS. X.4284. X.4652. X.2894. EFC. says… | ||
| scan 232 | Instructions regarding improvements to a battery ignition contact breaker using an experimental cam. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.b Order No: WB126 Customer's No. X2894 Battery ignition contact breaker Re R3/M7.1.27. It would be possible to try the effect of slow make and quick break with… | ||
| scan 233 | Instruction comparing R.R. and Delco-Remy contact breakers regarding earthing and insulation. | ||
| View original record | ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To Order No. Customer's No. this is done on most magnetos. One point of difference between the R.R. and Delco-Remy contact breaker is that the latter has the screw… | ||
| scan 234 | Battery ignition contact points, comparing the performance of platinum and tungsten with periodic current reversal. | ||
| View original record | To R. from EFC. c. to HJ. Ea. c. to Ry. EP. Wor. c. to Cy. FN. Emp/WRC. X2894 EPCL/T19.1.27. BATTERY IGNITION CONTACT POINTS. X4652 Two further results in connection with our report EPCL/T24.12.26 are… | ||
| scan 235 | Testing conditions and the sending of points for comparative inspection. | ||
| View original record | Contd. -2- EFC/T19.1.27. of both the screw and lever point. The reversals of current were made approximately every 24 hours of running, each total equivalent run having been 10,000 miles, as before.… | ||
| scan 236 | Suggestions for improving the life of battery ignition contact points for Phantom, 20 HP, & Silver Ghost models. | ||
| View original record | X2894 To EFC. HS)FROM R. E. EY)(At Le Canadel) DESPATCHED FROM WW. c. BJ. Wor. BATTERY IGNITION - PHANTOM, 20 HP. & SILVER GHOST. X.4652. X.441. X.2894. I feel that with the above it is a very urgent… | ||
| scan 237 | Component design improvements, material considerations, and spare parts availability. | ||
| View original record | -2- Contd. that we can publish to OY., to Repair Dept., and to owners generally, not crying stinking fish, but telling them what spares are recommended and available for different types, and the price… | ||
| scan 238 | Technical memo detailing the ongoing testing and development of battery ignition components. | ||
| View original record | To R. from EFC. c. to E. BJ. c. to Wor. Ey. x2894 EFC5/T27.1.27 x8680 x2894 X452 BATTERY IGNITION. Your reference R2/M22.1.27. Tungsten contact points on our own ignition are, as suggested, nearly but… | ||
| scan 239 | Design proposals for lever and spring mechanisms, including the use of tungsten and current reversal. | ||
| View original record | Contd. -2- EFC5/T27.1.27. The most hopeful proposal not yet properly tried out would seem to be larger pressure on points, especially in the case of tungsten. It has been difficult to obtain suitable… | ||
| scan 240 | Design of contact makers for battery ignition and exhaust valves, comparing Delco and Bosch designs. | ||
| View original record | TO E. F.C.) FROM R. No. EH.) (At Le Canadel.) Copy to - EH. WOR. X2894 R5/M28.1.27. DESPATCHED FROM WW. 31.1.27. X4041 X4652 X2894 X8680 BATTERY IGNITION. EXHAUST VALVES. CONTACT MAKER. diagram 30° -… | ||
| scan 241 | With diagrams discussing design improvements for a spring finger pivot and tungsten ignition points. | ||
| View original record | (2) pivot? Would it be good to have damping friction on the Spring finger Say 1 lb. on fibre disc. Say ½" dia. top & bottom. Creating say 10% friction of return spring. Could we also reduce rebound… | ||
| scan 242 | Experimental mounting for ignition contact points in a distributor. | ||
| View original record | To EY/RD. from EFC. X2894 EFC7/T28.1.27. IGNITION CONTACT POINT EXPERIMENTS. Herewith please receive copy of a suggestion made by my assistant for an experimental mounting for tungsten screw point on… | ||
| scan 243 | Extract from a letter by Mr. Minchin of Peto & Radford regarding a preference for platinum points over tungsten ones. | ||
| View original record | X2894 Extract from letter from Mr. Minchin (of Peto & Radford) .X.4008. M/S. 1st. Feb. 1927. I am sorry to hear Mr. Royce's suggestion re tungsten points. I think the platinum are the better and I do… | ||
| scan 244 | New car trial feedback, parts stock management for upcoming improvements, and specific changes to 20 HP and electrical components. | ||
| View original record | To EY) HS } FROM R. EFC)(at Le Canadel) X2894 RE/M.2.27. DESPATCHED FROM WW. 4.2.27. c. to BJ. WOR. PN. CWB. H. PHANTOM & 20 HP. X.2894. X.5680. X.7680. Mr. Hanbury's expressions of satisfaction with… | ||
| scan 245 | Letter addressing an issue with the doming on tungsten points and suggesting a modification. | ||
| View original record | X2894 EFC6/T7:2.27. 7th February, 1927. Mr. G.R.N.Minchin, C/o Messrs. Peto & Radford, 50, Grosvenor Gardens, LONDON, S.W.1. Dear Mr. Minchin, In further answer to your letter of the 1st inst. and in… | ||
| scan 246 | Letter from Peto & Radford regarding tungsten points. | ||
| View original record | X2894 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 10 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &… | ||
| scan 247 | Comparing the lifespan and performance of different magneto and battery ignition contact points. | ||
| View original record | To R. from EFC. c. to EJ. E. c. to BY. Wor. Y2894 EFC3/LG16.2.27. LIFE OF MAGNETO AND BATTERY IGNITION CONTACT POINTS. X4652 to X8793/b We have no experimental evidence to the effect that Lucas… | ||
| scan 248 | Decision to use tungsten for battery ignition contact points. | ||
| View original record | X2194 To EFC. HS. }FROM R. E. BY. }(At Le Carmel) DESPATCHED FROM WW. 24.2.27. c. to BJ. Wor. RG. Ds. BATTERY IGNITION CONTACT POINTS. X.2894. X.4041. X.4652. X.4284. I am very definitely in favour of… | ||
| scan 249 | Battery ignition, focusing on the life, design, and interchangeability of contact breaker points. | ||
| View original record | 1 Copy To EFC. Hs. FROM R. BY E. At Le Canadel. c. BJ. Wor. RG. DA. X2894 RL/M23.2.27 BATTERY IGNITION LIFE OF CONTACT BREAKER POINTS. AS X.4652. X.2894. X.4041. X.1818 REGARDING POINTS. I hope it… | ||
| scan 250 | The production cost for Tungsten points versus Platinum points for standard battery ignition. | ||
| View original record | Remarks on the running generally. :revirD To BY/HM. from EFC. X2894 EFC3/T3.3.27. RE TUNGSTEN AND PLATINUM POINTS. V2894 / X4612 Would you kindly ascertain for us what the cost on a production basis,… | ||
| scan 251 | Standardisation of tungsten points for battery ignition contact breakers. | ||
| View original record | X2894 1 Copy to To R. from EFC. c. to BJ. E. c. to Wor. Da. c. to Ev. Re. EFC3/T4.3.27 X4652 BATTERY IGNITION CONTACT BREAKER X4041 AND CONTACT BREAKER POINTS. X1818 Your reference R1/M23.3.27. Before… | ||
| scan 252 | Ignition system design, focusing on optimizing current at break and condenser capacity for platinum point life. | ||
| View original record | -2- EFC3/T4.3.27. 1 COPY to F.T.B. & V.T.D. 1 COPY to Contd. 1 COPY to D.O.V.T. (Faint bleed-through text) AERONAUTICAL INSPECTION DIRECTORATE FOR CHIEF INSPECTOR OF ENGINES (2/E.U.S.H.) would be… | ||
| scan 253 | The standardisation of tungsten battery ignition contact points. | ||
| View original record | Driver: To HM. from EPC. BY. Hs. EP. Mx. Br. BY/NHW. Hm/NRC. Demonstration Class. Remarks on the running generally X2894 EFC5/T4. 3. 27. BATTERY IGNITION CONTACT POINTS. -----------------------------… | ||
| scan 254 | Technical note on the maintenance and alignment of battery ignition contact points. | ||
| View original record | EFC. WC.S. BATTERY IGNITION CONTACT POINTS. We cannot emphasize too strongly with regard to the above the necessity for lining the points up correctly. This can be done first by manual fitting, but… | ||
| scan 255 | Standardisation of tungsten points pending the results of a 10,000-mile test. | ||
| View original record | X2894 To GWH. from EFC. c. HS/AJL. EFC1/T5.3.27. RE TUNGSTEN POINTS. On 10-G3 for the 10,000 mile test we have as you know, tungsten points. There has been considerable anxiety on Mr. Royce's part to… | ||
| scan 256 | The potential standardization of tungsten contact points to replace platinum points following a 10,000-mile test. | ||
| View original record | Remarks on the running - general X5894 To Wd. from EFC. c. HY. EFC3/T5.3.27. PLATINUM CONTACT POINTS. In view of the near future possibility of standardising tungsten points - we hope to do this after… | ||
| scan 257 | Comparing the costs of Iridio Platinum and Tungsten contact points for K. Series production. | ||
| View original record | X2894 My's Dept. My is absent. To BY from Rb. Rb.5/M/57A/BJ.8.3.27. EFC BY/Mtn9/G.4.3.27. X4652 In reply to your enquiry we have obtained the following information from the Order Office For K. Series… | ||
| scan 258 | Extract from Mr. Minchin's letter comparing the performance of tungsten and platinum points. | ||
| View original record | X2894 Extract from Mr. Minchin's letter M/5. 9th March, 1927. X.4040. "Re the tungsten points, I must say that these are now doing all right and are not pitting and are doing very much better than the… | ||
| scan 259 | Manufacturing method of tungsten points and questioning a supplier. | ||
| View original record | To Wd. from EFC. X2894 EFC3/T16.3.27. (Stamped and upside down: CERTIFICATE OF INSPECTION BY A.I.D.) RE TUNGSTEN POINTS (Stamped and upside down: ROLLS-ROYCE ENGINES AND SPARES) We have been informed… | ||
| scan 260 | Communication regarding the quality of tungsten points supplied by W.H. Reynolds & Co. | ||
| View original record | EFC. from Wd. X 2894 Wd5/NJ21.3.27. Tungsten Points. The remarks in yours EFC3/T16.3.27 were duly communicated to W.H.Reynolds & Co. and are are now in receipt of their reply stating they have always… | ||
| scan 261 | Replacing platinum battery ignition contact points with tungsten points on 12-EX. | ||
| View original record | To Hs/AJL. from EFC. X2894 EFC4/T23.3.27. We desire to replace the platinum battery ignition contact points on 12-EX with tungsten points. Mr. West will come along and do this. EFC. | ||
| scan 262 | Extract from a letter regarding a tail lamp indicator and tungsten points. | ||
| View original record | X2894 Extract from Mr. Minchins letter M/5 of 22.4.27. X.4008. X.3858. With regard to the tail lamp indicator, I note what you say and that you are giving me the opportunity of saying what you expect… | ||
| scan 263 | Pressure on battery ignition contact points and expressing dissatisfaction with progress on the unit. | ||
| View original record | To EFC. from R. c. to BJ. Wor. Hs. BY. Y2894 R11/M29.4.27. BATTERY IGNITION CONTACT POINTS. X4652 I do not understand the object of increasing the pressure on the tungsten points unless you find on… | ||
| scan 264 | Electrical experimental record sheet for mileage testing large diameter tungsten points. | ||
| View original record | X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS X. &No:- 2894 Large Dia Tungsten points | Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. |… | ||
| scan 265 | Letter regarding the removal and return of battery ignition contact points after a specified mileage. | ||
| View original record | To "H.S." From "G.W.H." X2894 Hotel de France. Chateauroux. Indre, France. May, 2nd 1927. I O - G - I I I . Herewith please find the Battery Ignition Contact Points taken off after a mileage of 8054… | ||
| scan 266 | Slow progress and failures of battery ignition systems on Phantom and 20HP models. | ||
| View original record | X2894 TO EPC.) FROM R. HS.) Copy to - B.J. " - W.H.O. " - BY. BATTERY IGNITION. I still have the impression that we are making very slow progress with increasing the life of the contact points on the… | ||
| scan 267 | 20 HP car's battery ignition fault, which was traced to water on the plugs. | ||
| View original record | X2894 To R. from Hs/Rm. c. to BJ. Wor. c. to RG. E. c. to DA. EY. Hs/Rml/LG.6.5.27. 20 HP. BATTERY IGNITION. X4652 With reference to R3/M3.5.27. The battery ignition on 10-G-111 did not completely… | ||
| scan 268 | 10,000-mile test of tungsten battery ignition points on chassis 10-G3 in France, comparing performance to platinum points. | ||
| View original record | To R. from EFC. c. BJ. PN. c. E. Ds. c. Wor. BY. c. EP. X8894 EFC4/T6.5.27. TUNGSTEN BATTERY IGNITION POINTS ON 10,000 MILE TEST ON CHASSIS 10-G3. IN FRANCE. The following is the report received from… | ||
| scan 269 | Performance and potential standardization of tungsten contact points versus platinum points. | ||
| View original record | Contd. -2- EFC4/T6.5.27. We are still not prepared to say definitely that tungsten points are better than platinum though we are of the opinion that they are at least equally good and would therefore… | ||
| scan 270 | The operational challenges and considerations for tungsten points in distributors. | ||
| View original record | -3- Contd. unfortunate that it was considered necessary for the tungsten points to be touched. Concerning the good operation of tungsten points generally, we have noted the following points :- (1)… | ||
| scan 271 | Requesting an experiment with tungsten points for a scrubbing action in a make and break system, as desired by Mr. Royce. | ||
| View original record | X2894 To EX/RD. from EFC. EFC1/T14.5.27. X8692 ✓ Mr. Royce has again desired that we should try an experiment with tungsten points in which provision is made for small scrubbing action, as he… | ||
| scan 272 | Outlining suggestions and testing conditions for improving battery ignition tungsten points. | ||
| View original record | TO HS. FROM R. X2894 R2/M16.5.27. G. to BJ. BY. BATTERY IGNITION. X2894 x 4652 I have suggested that the tungsten points may require different treatment to platinum points, that is, they will bear… | ||
| scan 273 | Instructions for fitting and modifying the doming of tungsten points on battery ignition contact breaker levers. | ||
| View original record | X2894 To ROY. from EFC. EFC4/T17.5.27. RE TUNGSTEN POINTS. We hand you herewith six battery ignition contact breaker levers and screw points. Would you please have these sent to Messrs. Reynolds to be… | ||
| scan 274 | List of suggestions for the improvement of operation of platinum or tungsten ignition contact points. | ||
| View original record | X2894 To R. from EFC. c. BJ. PN. c. E. Da. c. Wor. OY.- c. BY. EFCl/T18.5.27. IGNITION CONTACT POINTS. X465 We give below list of various suggestions for improvement of operation of platinum or… | ||
| scan 275 | Progress report on experiments with various automotive electrical ignition components. | ||
| View original record | Contd. -2- EFCl/T18.5.27. as suggested in your note to repeat these experiments reversing the current with a frequency of the order of four times per minute. (16) Reversal of direction of running… | ||
| scan 276 | Progress report on a series of experiments concerning engine ignition components. | ||
| View original record | -3- 6 Contd. (23) Slow make quick break cam. Awaiting experimental shop. (24) Comparative life of U.S.A.Bosch and Remy points. This is partly covered by test No.19. Sample U.S.A.Bosch points sent.… | ||
| scan 277 | 10,000 mile bench ignition contact point experiments. | ||
| View original record | -2- 10,000 MILE BENCH IGNITION CONTACT POINT EXPERIMENTS. | Conditions | Contact point material ||| |---|---|---|---| | | **Iridio-platinum (pt.)** | **Tungsten (British) (Tn.B.)** | **Tungsten… | ||
| scan 278 | 10,000-mile bench ignition contact point experiments comparing Iridio-Platinum and Tungsten materials. | ||
| View original record | -3- 10,000 MILE BENCH IGNITION CONTACT POINT EXPERIMENTS. Contact point material. | Conditions | Iridio-Platinum (pt). | Tungsten (Tn.B.). | |---|---|---| | Previous Std. coil Otherwise standard.… | ||
| scan 279 | Experimental record sheet for large diameter (LD) tungsten points fitted to a vehicle. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Diameter (LD) Tungsten Points S X9594 Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles… | ||
| scan 280 | Experimental record sheet for large diameter tungsten points, tracking mileage and condition. | ||
| View original record | ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No.:- 2894 Large Dia Tungsten points (LD) Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total… | ||
| scan 281 | Battery ignition system design featuring scrubbing contacts, a flexible spring, and a damping mechanism. | ||
| View original record | Y8692 E1/M4.6.27. X V2854 4652 TO BY. FROM E. C. to BJ. EFG. HS. BATTERY IGNITION. We send herewith drawing LeC. 2422. shewing the above arranged for scrubbing contacts and more flexible spring. A… | ||
| scan 282 | Requesting two special battery ignition contact breaker levers be sent to suppliers for fitting with new points. | ||
| View original record | X2894 To ROY. from EFC. EFC6/T8.6.27. Herewith we hand to you two special battery ignition contact breaker levers. Will you please arrange for these to be sent away one to each of our respective… | ||
| scan 283 | Improvements to the battery ignition contact maker, including design alterations and wiring suggestions. | ||
| View original record | X2894 TO REC. FROM R. C-to BI. WOR. BATTERY IGNITION CONTACT MAKER. This matter should not rest for a moment until we have made some definite improvements. E. has suggested adopting the Bosch mushroom… | ||
| scan 284 | The slow progress in improving the life of tungsten contact points for battery ignition systems. | ||
| View original record | TO EFG. FROM R. C. to BJ. WOH. HS. Y2894 R4/M18.8.27. RECEIVED BATTERY IGNITION - TUNGSTEN POINTS. Y2894 I am still extremely anxious to hear of good improvement in the life of the contact points on… | ||
| scan 285 | The supply and modification of battery ignition contact points with platinum and tungsten. | ||
| View original record | To ROY. from EFC. X259U EFC2/T20.6.27. BATTERY IGNITION CONTACT POINTS. Herewith we hand to you two battery ignition contact breaker levers. Will you please arrange for these to be sent away one each… | ||
| scan 286 | Experimental testing of battery ignition tungsten points. | ||
| View original record | To R. from EFC. c. BJ. Wor. BY. X2894 EFC5/T21.6.27. BATTERY IGNITION - TUNGSTEN POINTS. X2894 X4654 Referring to your R4/M18.6.27, following my visit to you I carefully considered what we could do to… | ||
| scan 287 | Specifications for doming of platinum and tungsten battery ignition contact screw points. | ||
| View original record | 1 X2894 21.6.27. X.4652. X.2894. [crossed out] X.919 DOMING OF PLATINUM AND TUNGSTEN BATTERY IGNITION CONTACT SCREW POINTS. The following figures have been finally fixed :- Dia. of std. platinum point… | ||
| scan 288 | 10,000-mile bench tests for battery ignition contact points, detailing tests on condenser values and periodic current reversal. | ||
| View original record | To R. from EFC. c. BJ. Wor. BX. x2894 EFC2/T5.7.27. X4652 BATTERY IGNITION CONTACT POINTS. x 2894 FURTHER 10,000 MILE BENCH TESTS Ref. previous report LCI/T18.5.27. (14) Double or maximum value… | ||
| scan 289 | Experiments and tests conducted on ignition system components. | ||
| View original record | EFC2/T5.7.27. -2- Contd. that the magneto points will not then function so satis- factorily. A set of tungsten points will be similarly experimented upon, on the battery ignition. (21) Lever with… | ||
| scan 290 | Experiments with doming on platinum and tungsten screw points to improve initial contact bedding. | ||
| View original record | EFC2/T5.7.27 -3- Contd. In all the other four samples given this time, no trimming was required. A criticism of these points which may be given is that the initial bedding is not sufficiently correct.… | ||
| scan 291 | The bedding of electrical contact points, discussing doming and the use of platinum. | ||
| View original record | EFC2/T5.7.27. -4- Contd. Only two were bedding centrally; one of these shewed 50% bedding contact. The other four were bedding about 50% of the total surface on the sides of the points. We are… | ||
| scan 292 | Page discussing a component alteration involving platinum and sending samples for inspection. | ||
| View original record | EFC2/T5.7.27. -5- Contd. which ultimately reaches the iron of the screw point, it would appear to be an advantage to have the extra/equivalent of that portion of the platinum taken from the lever… | ||
| scan 293 | Experimental record sheet tracking the performance of large diameter tungsten points. | ||
| View original record | X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 2894 Large Diameter Tungsten points Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. |… | ||
| scan 294 | Requesting a comparative report on battery ignition systems from competitors like Delco and Bosch. | ||
| View original record | To EFC. from R. c. to BJ. Hs. EY. X2894 RL/M11.7.27. BATTERY IGNITION. X4652 I am afraid the information contained in your EFC2/T5.7.27 is not what I expected to receive. I am anxiously awaiting… | ||
| scan 295 | Letter from Joseph Lucas Research Laboratories discussing contact breaker 'make' and 'break' periods and primary inductance. | ||
| View original record | Y 2894 THE JOSEPH LUCAS RESEARCH LABORATORIES TELEGRAMS: "LUCAS, BIRMINGHAM" TELEPHONE: NORTHERN 2201 (P.B.X?) WELL STREET BIRMINGHAM WHEN REPLYING PLEASE REFER TO EOT/5. 11th July 1927. E. Fowler… | ||
| scan 296 | The order of precedence for experimental tests on battery ignition contact points. | ||
| View original record | To R. from EFC. c. BJ. EY. X2894 EFCl/LG14.7.27. BATTERY IGNITION CONTACT POINTS. X.4041. X.2894. X.4652. Your RL/M117.27. We have arranged the order of precedence of further experimental tests as… | ||
| scan 297 | Component noise, delays, and progress on experimental testing for the Phantom model. | ||
| View original record | Contd. -2- Contd. of RR. and Delco. It is to be noted that both Bosch and Delco-Remy are, with their offset levers, more noisy than the standard RR., and we believe, would not pass for silence on the… | ||
| scan 298 | Requesting the supply of tungsten contact points, levers and screws for battery ignition experiments. | ||
| View original record | To BY/RD. from EFC. X2894 EFC1/LG18.7.27. TUNGSTEN CONTACT POINTS. X2894 In connection with our battery ignition experiments will you please arrange for the supply to us of one dozen standard contact… | ||
| scan 299 | Parts request for 12 sets of tungsten contact breaker levers and screw points, listing the required drawing numbers and quantities. | ||
| View original record | To RHC. C. EFC. X2894 BY/RD11/K. 19. 7. 27. TUNGSTEN CONTACT POINTS SEC: 8120. Will you please put in hand 12 sets of contact breaker levers and screw points to the following drawings.- D.50073.-… | ||
| scan 300 | Urgent request to have the remaining tungsten point ground flat for ignition rig tests. | ||
| View original record | To RHC. from EFC. X2894 EFC7/T9.8.27. X.2894. TUNGSTEN POINTS. Would you please note that the tungsten points instructed by BY/RM1/K.19.7.27 are now very urgently required to enable us to proceed with… | ||
| scan 301 | Requesting the fitting of tungsten points to battery ignition contact breaker levers. | ||
| View original record | To ROY/Ms. from EFC. X2894 EFC2/T11.8.27. MOST URGENT. TUNGSTEN POINTS. O/N.54733. Herewith we hand to you 12 battery ignition contact breaker levers and 12 screws for same. Will you kindly have the… | ||
| scan 302 | Request to obtain Tungsten and Platinum screw points for experimental purposes. | ||
| View original record | X2894 To Roy/Ms. from EFC. EFCl/T16.8.27. O/N.54733. Will you kindly obtain from our respective suppliers :- 9 - D.51560. Tungsten Screw Point. (Flat) 9 - D.50467. Platinum " " (Flat) These are… | ||
| scan 303 | Order of operation for the production of completed battery ignition levers. | ||
| View original record | X2894 EFC/T17.8.27. ORDER OF OPERATION FOR THE PRODUCTION OF COMPLETED BATTERY IGNITION LEVERS. (1) Levers are received by us blanked and pressed. (2) We send these outside for fitting with platinum… | ||
| scan 304 | Further work on battery ignition contact breaker levers. | ||
| View original record | To HHC. from EFC. X2894 EFC5/T17.8.27. Herewith we hand to you one dozen battery ignition contact breaker levers which have been fitted with tungsten points. Will you please have these - (1) Fitted… | ||
| scan 305 | Experiments with battery ignition contact points, focusing on scrubbing action and various methods of bedding for tungsten points. | ||
| View original record | To R. from EFC. c. BJ. BY. c. Wor. X2894 EPCL/T26.8.27. Y4652 BATTERY IGNITION CONTACT POINTS. Further to our EPCL/LGl4.7.27 and dealing with the various experiments in the order there listed :-… | ||
| scan 306 | Experiments on distributor and contact breaker points, comparing different materials and systems. | ||
| View original record | Contd. -2- EFC/T26.8.27. on the edge only, do not give any worse results on the Delco-Remy, this referring to tungsten. See No.31 below. A crucial experiment which we have prepared and have now set… | ||
| scan 307 | Results of endurance tests on various ignition system components. | ||
| View original record | Contd. -3- EFCL/T26.8.27. No.11. Run platinum points with distributor removed. This has been done with slightly domed points (stopped at 4100 miles on account of poor result), and repeated with… | ||
| scan 308 | Ignition contact breaker point tests, comparing Delco-Remy and standard components. | ||
| View original record | Contd. -4- EFCL/T26.8.27. No.31. Delco-Remy with purposely exaggeratedly mis-aligned screw point. RR. ignition circuit. In this case the Delco Remy contact breaker with flat tungsten points purposely… | ||
| scan 309 | Experiments comparing Delco-Remy and U.S.A. Bosch ignition systems. | ||
| View original record | Contd. -5- EFC/T26.8.27. the damper, has been started with carefully bedded tungsten points. With the above we have, as stated, started the crucial experiment of Delco-Remy lever and point fitted to… | ||
| scan 310 | Use of tungsten over platinum for battery ignition points and comparing American Bosch and Delco systems. | ||
| View original record | EFG. } FROM R. (EFG. and HS. are crossed out) HS. } C. to BJ. WOR. BY. ORIGINAL M/29.8.27. X2894 re. BATTERY IGNITION POINTS. X4652 X2894 Why talk about platinum points. Tungsten is what we want, and… | ||
| scan 311 | And comparing the performance of ignition contact points from different manufacturers and materials. | ||
| View original record | To R. from EFC. c. BJ. Wor. c. EY. X2894 EFC1/T31.8.27. IGNITION CONTACT POINTS. X4612 Flexible copper connections giving as completely x continuous a metallic connection as possible between contact… | ||
| scan 312 | Standardisation of tungsten points over platinum and postponing the decision pending further testing. | ||
| View original record | Contd. -2- EFC1/T31.8.27. Technically speaking, therefore, tungsten perhaps may be considered to show some advantage. Some time back, when the question of putting through a standardisation sheet for… | ||
| scan 313 | Standardising tungsten ignition contact points and ceasing orders for platinum points. | ||
| View original record | X 2894 To Roy, from EFC. cc EY. EFC2/T5.9.27. RE IGNITION CONTACT POINTS. Further to our EFC3/T5.3.27, will you kindly note that we are now making up a standardisation sheet for tungsten contact… | ||
| scan 314 | Standardisation of tungsten contact points for battery ignition to replace platinum points. | ||
| View original record | RR.755 REVISED (10H) (DE 649 9-12-26) BM. 2/1187. X2894 STANDARDISATION of CHASSIS PARTS. Date 6.9.27 X No. 2894 Drawing D.51560 No. D.51408 Part List (1) Description of Parts. TUNGSTEN CONTACT POINTS… | ||
| scan 315 | Form for authorising the standardisation of chassis parts, specifically turnout contact forms for battery ignition. | ||
| View original record | STANDARDISATION of CHASSIS PARTS TURNOUT CONTACT FORMS FOR BATTERY IGNITION (1) The number of the first chassis on which the new part will be fitted. Answer: When existing stocks have been used. (2)… | ||
| scan 316 | Road test report on the performance and wear of tungsten contact points. | ||
| View original record | Road Test Report. 6.9.27 TUNGSTEN CONTACT POINTS. Run 10,000 miles on 8-Ex. Pitted at end of run. " 7,500 " " 10-G3. Changed due to pitting and misfiring. " 5,400 " " 98-NK. Misfiring developed. "… | ||
| scan 317 | Clarifying the standardisation of tungsten ignition points for the 20 HP and 40/50 HP chassis. | ||
| View original record | To Roy. from EFC. c. BY. X.2894 EFC3/T7.9.27. X.2894. TUNGSTEN POINTS. With reference to the standardisation of tungsten points, will you kindly note that this standardisation refers to our later… | ||
| scan 318 | Test results of tungsten ignition contact points and a related standardization sheet. | ||
| View original record | To R. from EFC. c. BJ. EY. c. Wor. E. X2894 EFCI/T9.9.27. X4275 X4284 TUNGSTEN IGNITION CONTACT POINTS. A standardisation sheet for tungsten points is now being circulated for signatures. We have… | ||
| scan 319 | Test report comparing the performance of different tungsten contact points, including standard, U.S.A. Bosch, and Delco-Remy models. | ||
| View original record | -2- Contd. The result of this test would appear to show the necessity of some flexibility for the screw point. On the Remy contact breaker itself the surface of the screw point stands .450" above the… | ||
| scan 320 | The performance of tungsten ignition contact points after a 3300-mile test and a request for a design modification. | ||
| View original record | X2894 To R. From EFC. c. BJ. Wor. c. E. EX. EFC1/112.9.27. TUNGSTEN IGNITION CONTACT POINTS. We stated in our EFC1/T9.9.27 that we would carefully watch the result of the present (second) test of… | ||
| scan 321 | Results of experiments on ignition systems, specifically the scrubbing action of contacts. | ||
| View original record | contd. 3 From previous experiments it does not appear that any kind of scrubbing action will do, but that it must take place in a particular way. It may be remembered that we tried out a type of… | ||
| scan 322 | Letter concerning the failure of American Bosch ignitions and the development of a new battery ignition system. | ||
| View original record | X 2894 cc - Mr. Bailey - Derby. Mr. Nadin - England Mr. Beaver Oy 13-E-91227 September 12th, 1927. Mr. E. F. Clarke, Rolls-Royce Ltd., Derby, England. Dear Mr. Clarke: Re Ignition X2894 X4181 Thank… | ||
| scan 323 | Page two of a letter signed by Maurice Olley regarding the use of a ballast. | ||
| View original record | -2- outside to be highly satisfactory and to avoid the possible cause of failure involved in the use of a ballast, Yours very truly, Maurice Olley MO/E COPY | ||
| scan 324 | Alternative designs for scrubbing points and a rocker spring related to the battery ignition system. | ||
| View original record | EFC. from Rt c. to BJ. c. to BY. c. to Hs. Y 2894 RL/M13.9.27 BATTERY IGNITION X.8692. Regarding scrubbing points, we are sending you a simpler scheme which we think has theoretical defects over that… | ||
| scan 325 | Experiments on battery ignition contact points and requesting a drawing of a thinner scrubbing arm. | ||
| View original record | X8692 To BY. from EFC. EFC1/T15.9.27. BATTERY IGNITION CONTACT POINTS. Referring to R1/M13.9.27, there are therein three experiments asked for corresponding to the three paragraphs which we call - (1)… | ||
| scan 326 | Requesting parts to maintain progress on tungsten point experiments. | ||
| View original record | X2894 To RHC. from EFC. EFC1/T16.9.27. RE TUNGSTEN POINTS. Will you please note that to maintain continuity of progress on our tungsten point experiments as much as possible, we should like to have as… | ||
| scan 327 | New drawings for battery ignition components, specifically scrubbing contacts and a contact arm spring. | ||
| View original record | BY FROM E. C. to HS. X2894 E1/M17.9.27. BATTERY IGNITION. X8692 We send herewith drawings LeCs. 2460/1. shewing the above arranged with two further types of scrubbing contacts, and also with an… | ||
| scan 328 | Request to prepare a set of parts for a new ignition distributor scheme with a flexible contact point. | ||
| View original record | X8692 To RHC C. EFC. BY/RD2/M.22.9.27. IGNITION DISTRIBUTOR - SEC:8120. Will you please put in hand one set of parts to the following blueprints, which represent a scheme with a flexible contact point… | ||
| scan 329 | List of part changes and modifications, including new parts for a distributor and condenser assembly. | ||
| View original record | (2) BY/RD2/M.22.9.27. Cont'd. K. 2610.A - 5 B.A C's'k Head Bolt. - 1 off. K.1731.A - 5 B.A Cheese Head Bolt. - 1 " K. 1713.A - 5 B.A.Cheese Head Bolt. - 1 " + To be tinned. New parts:- D.71416 -… | ||
| scan 330 | Testing tungsten ignition contact points, comparing results from different mechanical and electrical conditions. | ||
| View original record | Y2894 To R. from EFC. c. BJ. BY. c. E. Worl EFCL/T27.9.27. X8692 TUNGSTEN IGNITION CONTACT POINTS. Two more sets of points are herewith sent for your inspection. The pair marked (27) is the finished… | ||
| scan 331 | Experiments with ignition system components like tungsten points and scrubbers, comparing Delco-Remy and Bosch systems. | ||
| View original record | EFC1/T27.9.27. -2- Contd. meeting and parting exactly right, and then, judging from the results of our experiments, the points will behave nicely, with whatever arrangement of coil and ballast we care… | ||
| scan 332 | Requesting modification of 12 battery ignition levers with tungsten points. | ||
| View original record | X.2894 To RHC. from EFC. EFC4/T4.10.27. May we please have the 12 battery ignition levers with tungsten points, sent to you under cover of our EFC5/T17.8.26. to be fitted with pivot bushes,… | ||
| scan 333 | Requesting that battery ignition contact point levers and screws be re-ground flat. | ||
| View original record | To HIC. from EFC. X 2894 EFC5/T4.10.27. We hand you herewith a number of battery ignition contact point levers, together with two contact point screws. Will you please have the contact points of these… | ||
| scan 334 | Comparative performance of different battery ignition systems, focusing on the mechanics and longevity of their contact points. | ||
| View original record | X2894 To OY. from EFC. c. EY. EP. EFCA/T6.10.27. RE BATTERY IGNITION. X2894 X4281 XU581 We have received your note of Sept. 12th concerning ignition. We have also received copies of your OY16-E91327… | ||
| scan 335 | Development and testing of ignition system components, comparing them to Delco-Remy and Bosch systems. | ||
| View original record | Contd. -2- EFC4/T6.10.27. certain way. But we have not yet quite got to the final arrangement. This will answer the query contained in your 5th paragraph. That is to say, the most improved development… | ||
| scan 336 | The use of an ignition coil with and without a ballast resistance. | ||
| View original record | -3- Contd. may be the case (difficult to prove conclusively) but it certainly does not have anything like the effect of altering the mechanics of the contact breaker. Apparently this point would… | ||
| scan 337 | Testing tungsten ignition contact points, focusing on a three-flat cam modification and a new scrubber design. | ||
| View original record | To R. from EFC. c. BJ. E. c. Da. Wor. c. Ev. X2894 EFC3/T18.10.27. TUNGSTEN IGNITION CONTACT POINTS. X2894 Reference of last report EFC1/T27.9.27. X8892 Four further sample sets of points are now… | ||
| scan 338 | Ignition system experiments and a review of battery ignition distributors from the Olympia Show. | ||
| View original record | Contd. -2- EFC3/T18.10.27. No.27bn. This is another experiment on the undamped scrubber to Lec.2422, but in this case the points were purposely initially misaligned. The bedding has spread reasonably… | ||
| scan 339 | Further tests on ignition components, specifically the Delco-Remy system. | ||
| View original record | Contd. -3- EFC3/118.10.27. In the Delco-Remy case referred to above I understand the arrangement to be that of two contact breaker levers being operated alternately by the same three-part cam. In… | ||
| scan 340 | Expressing frustration over significant delays in the standardisation of battery ignition tungsten points. | ||
| View original record | V2894 HS. / EFG. } FROM R. [strikethrough]C-in-C Bl. WOR[strikethrough] R2/M20.10.27. BATTERY IGNITION - TUNGSTEN POINTS. Y8692 I do not know whether these have yet been made standard, and I cannot… | ||
| scan 341 | Confirming the standardisation and production instruction for tungsten points for battery ignition. | ||
| View original record | Y2894 To R. from EFC. c. BJ. Wor. EFC4/T21.10.27. BATTERY IGNITION - TUNGSTEN POINTS. With reference to your memo R2/M20.10.27, tungsten points have been duly standardised and are now fully instructed… | ||
| scan 342 | Electrical experimental record sheet for testing tungsten contact points. | ||
| View original record | X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 2894 Tungsten contact points Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total… | ||
| scan 343 | Request to allot six pairs of Tungsten Contact Points from a production order for experimental use. | ||
| View original record | To ROY/AW. from EFC. Y2894 EFC3/T21.10.27. X. 2894. TUNGSTEN CONTACT POINTS. O/N.54733. With reference to the 200 pairs of points which have been ordered from Messrs. Reynolds for production, would… | ||
| scan 344 | Request to grind three domed battery ignition tungsten screw points flat for experimental purposes. | ||
| View original record | To HHC. from EFC. X2894 EFC/T21.10.27. TUNGSTEN CONTACT POINTS. Herewith we hand to you three battery ignition tungsten screw points which at present are provided with domed surfaces. As all our… | ||
| scan 345 | Confirming the receipt of 100 pairs of Tungsten Contact Points and how to acquire six for experimental purposes. | ||
| View original record | EFC. X2894 Roy/AW1/N.25.10.27. 31304 Replying to yours EFC3/T21.10.27. will you please note that 100 pairs of Tungsten Contact Points D.51408 and D.51560 have now been received. The six of each that… | ||
| scan 346 | Questioning the necessity of the Cashier stocking tungsten contact points due to booking complications. | ||
| View original record | X2894 To ROY. from EFC. EFC2/T26.10.27. We note that tungsten contact points are being stocked by the Cashier. May we suggest that you consider whether the value of tungsten points is great enough to… | ||
| scan 347 | Handover of six tungsten-pointed rivets for ignition experiments. | ||
| View original record | X2894 To RHC. from EFC. EFC3/T26.10.27. I have handed to Mr. Tooby in connection with tungsten point experiments six tungsten pointed rivets with flat surfaces, for fitting to the various special… | ||
| scan 348 | Experimental record sheet for Tungsten contact points. | ||
| View original record | X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS X. No:- 2894 Tungsten contact points. Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total… | ||
| scan 349 | 10,000-mile bench test and subsequent experimental car run of tungsten ignition contact points. | ||
| View original record | To R. from EFC. c. BJ. E. X2894 EFCL/T5.11.27. TUNGSTEN IGNITION CONTACT POINTS. The two arrangements called for by LeC.2460 and 2461, will complete their 10,000 mile bench test during this week-end.… | ||
| scan 350 | Requesting modifications and assembly of tungsten ignition contact points and heads for experimental testing. | ||
| View original record | To RHC. from EFC. X8692 EFCL/T7.11.27. TUNGSTEN IGNITION CONTACT POINTS. Will you please put in hand :- (1) The addition of spring anchor pins to the three tungsten pointed battery ignition levers… | ||
| scan 351 | Results of 10,000-mile bench tests on tungsten ignition contact points. | ||
| View original record | To R. from EFC. c. RJ. E. c. Wor. Ey. X2894 EFC6/T7.11.27. TUNGSTEN IGNITION CONTACT POINTS. V8652 As referred to in our preliminary note EFC1/T5.11.27, we are sending you the contact point results of… | ||
| scan 352 | Note on the effect of distributor and rotor types on contact point performance and internal corrosion. | ||
| View original record | Contd. -2- KFC6/17.11.27. As previously remarked we think the removal of the distributor, as also is the case with the umbrella type rotor in place of standard rotor, has little effect on the… | ||
| scan 353 | Arrangement to produce tungsten contact points and the urgent requirement of a lever for further testing. | ||
| View original record | To RHC, from EFC. X8692 EFCI/T7.11.27. TUNGSTEN CONTACT POINTS. Further to our EFCI/T7.11.27 we have arranged with you verbally to produce three sets to LeC.2460 instead of one set each to LeC.2460/1,… | ||
| scan 354 | Standardization of battery ignition components and a remaining issue with the distributor. | ||
| View original record | HS. ) FROM R. EFC. ) C to RL. RY. X8892 RR. BATTERY IGNITION. At the first possible moment we want you to standardise the scrubbing tungsten points, and the new system of spring to the contact maker.… | ||
| scan 355 | From EFC to RHC requesting a spring anchor pin be fitted to two tungsten pointed ignition levers. | ||
| View original record | To RHC. from EFC. X2894 EFC4/T9.11.27. Will you please have the spring anchor pin fitted to the two tungsten pointed ignition levers you handed herewith, as shown on LeC.2460. [Signature] EFC. | ||
| scan 356 | Requesting a supply of tungsten pointed contact breaker levers and screws for experiments. | ||
| View original record | To ROY/AW. from EFC. X2894 EFC3/T10.11.27. TUNGSTEN CONTACT POINTS. O/N.54733. With reference to the 200 pairs of points which have been ordered from Messrs. Reynolds for production, would you please… | ||
| scan 357 | Provision and fitting of three sets of battery ignition contact breakers to specific chassis. | ||
| View original record | To Hs/AJL. from EFC. X869Z EFC4/T10.11.27. IGNITION CONTACT POINTS. Further to our EFC7/T7.11.27, herewith we hand to you three sets of battery ignition contact breakers to LeC.2460, these being the… | ||
| scan 358 | Gauge of contact point arms for a contact breaker test. | ||
| View original record | To RHC. from EFC. X8692 EFC5/T10.11.27. CONTACT BREAKER TO LEC.2460. Further to our EFC7/T7.11.27, will you kindly note that the gauge of the contact point arms should be .064", similar to the one… | ||
| scan 359 | The standardisation of battery ignition for 'M' and F.2 series chassis, and querying terminal support details. | ||
| View original record | EFC. C. Hdr (handwritten, struck through) X2894 (handwritten) BY14/G.11.11.27. BATTERY IGNITION. ----------------- X8692 (handwritten, underlined) Referring to R1/M.8.11.27. we would like to know if… | ||
| scan 360 | Requesting the supply of Tungsten contact rivets and screws for an experimental order. | ||
| View original record | G/Mt. C. to EFC X 2894 Roy/AW18/N.11.11.27. In order that EFC can carry out experiments, we shall be glad if you will supply from stock to Experimental Order Number.54733.- 1.doz. Tungsten Contact… | ||
| scan 361 | Requesting the fitting of 12 tungsten rivets to 12 standard contact breaker levers. | ||
| View original record | To RHC. from EFC. X2894 EFC1/T14.11.27. Will you please have the 12 tungsten rivets handed to you herewith fitted to 12 standard contact breaker levers complete with rubbing blocks. EFC. | ||
| scan 362 | Standardisation and testing of battery ignition terminal supports. | ||
| View original record | To EY. from EFC. X8692 EFC4/T14.11.27. BATTERY IGNITION TO LEC.2460. Answering your EY4/G11.11.27, Hs. and myself are of the opinion that this should come on to both cars at the earliest possible… | ||
| scan 363 | Requesting two new contact breaker units with scrubbing contacts be fitted to two cars for a 10,000-mile test. | ||
| View original record | To RHC. from EFC. c. HS/AJL. X8692 EFCl/T19.11.27. X8692 Herewith we hand to you two contact breaker units arranged with the new type of scrubbing contacts which we have standardised. Will you please… | ||
| scan 364 | Improvements to the 'make and break' battery ignition system for F.2 and 'M' chassis. | ||
| View original record | BY/RD. [redacted] c. HSI [redacted] c. EFC. XX2894 BY4/G.21.11.27. BATTERY IGNITION. ---------------- X2894 X8612 Referring to the improvements on the make and break which have been recently tried out… | ||
| scan 365 | Request to arrange for two more models of scrubbing contacts with different flexibility. | ||
| View original record | EFC. FROM R. X8692 R3/M22.11.27. SCRUBBING CONTACTS. X.8692 I shall be glad if you will arrange for two more models like those that we propose touse, one with the anvil part still more flexible, and… | ||
| scan 366 | Test results for different designs of tungsten ignition contact points. | ||
| View original record | X2894 To R. from EPC. c. BJ. c. Da. c. Ex. c. Wor. EPC2/T24.11.27. TUNGSTEN IGNITION CONTACT POINTS. X2894 X8892 Herewith we send to you two further results (screw points only). One of these is a… | ||
| scan 367 | Systematic testing plan for an apparatus by altering four specific components. | ||
| View original record | -2- Contd. It occurred to us that whereas we had previously generally altered only one items from standard at a time, we might ~~put~~ up an experiment with our own apparatus as nearly like the Remy… | ||
| scan 368 | Continued memo discussing test results for case 2+3 and outlining current test parameters. | ||
| View original record | -3- Contd. As a matter of fact the case 2+3 has been done as the case asked for by Lec.2461. We are now sending you the result of this done with a standard lever which shows that 2+3 is no improvement… | ||
| scan 369 | Trial of different thickness 'anvils' for tungsten ignition contact points as requested by Mr. Royce. | ||
| View original record | To RHC. from EFC. X8692 EFC3/T24.11.27. TUNGSTEN IGNITION CONTACT POINTS. LEC.2460. We have a note from Mr. Royce asking us to try both a thicker and a thinner "anvil" as he calls it, in the Lec.2460… | ||
| scan 370 | Test results for different tungsten ignition contact points. | ||
| View original record | X8692 To R. from EFC. c. BJ. E⚷ c. Da. BY. c. Wor. EFC2/T24.11.27. TUNGSTEN IGNITION CONTACT POINTS. Herewith we send to you two further results (screw points only). One of these is a further case of… | ||
| scan 371 | Experimental testing strategy for an apparatus, comparing different combinations of four modifications. | ||
| View original record | -2- Contd It occurred to us that whereas we had previously generally altered only one item from standard at a time, we might put up an experiment with our own apparatus as nearly like the Remy as we… | ||
| scan 372 | Page three of a document discussing the results of a test case involving a standard lever. | ||
| View original record | -3- Contd. As a matter of fact the case 2+3 has been done as the case asked for by LeC.2461. We are now sending you the result of this done with a standard lever which shows that 2+3 is no improvement… | ||
| scan 373 | Requesting a battery ignition contact breaker test unit be fitted to chassis 11-G3. | ||
| View original record | To RHC. from EFC. c. HS/AJL. X869Z EFC4/T24.11.27. Herewith we hand to you battery ignition contact breaker with items to LeC.2461, this having been run as one of our test units on the bench. Will you… | ||
| scan 374 | Improvements for battery ignition systems and plugs, comparing English porcelain plugs to Champion plugs for aero engines. | ||
| View original record | HS. EY. EFC. } from R. c. BJ. Wor. X2894 R3/M28.11.27. BATTERY IGNITION & PLUGS. X.8692. X.2894. Scrubbing tungsten contacts to LeC.2460. are we believe now standard, with the improved spring… | ||
| scan 375 | 10,000-mile bench test of new tungsten ignition contact points. | ||
| View original record | To R. from EFC. c. BJ. E. c. Da. By. c. Wor. X2894 EFC6/T29.11.27. TUNGSTEN IGNITION CONTACT POINTS. X8692 In our EFC2/T24.11.27 we remarked that we had put up apparatus of our own as nearly like the… | ||
| scan 376 | Test results for different ignition contact point configurations, specifically anvil thickness and distributor setup. | ||
| View original record | To R. from EFC. c. BJ. E. c. Ev. Wor. X2894 EFC5/T12.12.27. IGNITION CONTACT POINTS. X8692 At the end of our EFC5/T29.11.27 we remarked that we were running the combination of scrubbing action and no… | ||
| scan 377 | The ongoing tests of different scrubbing arm types and their combinations. | ||
| View original record | -2- Contd. We now have running :- (1) A thinner scrubbing arm of the original long Lec.2422 type, the thickness tapering from the support end down to the point end. (2) Original type scrubbing action… | ||
| scan 378 | Results of a contact breaker unit test with a .080' anvil and requesting a re-test with a .064' anvil and a new quicker break cam. | ||
| View original record | To HIC, from EFC. X2894 EFC6A/ 12.12.27. Herewith we hand you the contact breaker unit which you arranged for test with the .080" thick anvil. The result of this test is poorer than the .064" which we… | ||
| scan 379 | Instruction to limit production of the existing make & break mechanism for the 20 HP & 40/50 HP chassis due to a new design. | ||
| View original record | Hm. (crossed out) c. Wor. (crossed out) c. Hs. (crossed out) c. EFC. (crossed out) c. Sft. (crossed out) c. BY/RD. (crossed out) X8692 BY6/G.8.12.27. 20 HP. & 40/50 HP. CHASSIS - MAKE & BREAK… | ||
| scan 380 | Modifications to the Make and Break Mechanism for the 20HP and 40/50HP models. | ||
| View original record | X8692 RECEIVED DEC 1927 BY. C. to WCR. C. to HE. C. to EFC. C. to JGE. HmB/EW9.12.27. Re 20HP. and 40/50HP. - Make and Break Mechanism. We note the suggestions in your BY6/GS.12.27, and we are in… | ||
| scan 381 | Experimental improvements to battery ignition systems, coil construction, and materials. | ||
| View original record | To EFC. from R. c. BJ. BY. Hs. V8692 R2/M9.12.27. BATTERY IGNITION. X.8692. X.8690. X.8710. X.4654. X.2894. Although the minor improvements after the scrubbing contacts are not of very great… | ||
| scan 382 | Requesting the return of tungsten contact points from an old distributor on car 14-EX for an experiment. | ||
| View original record | To RHC. from EFC. X8692 EFC1/T12.12.27. Will you please let us have the tungsten contact points off the old distributor that was on 14-EX. These constitute one of our experiments. EFC. | ||
| scan 383 | Test results of a contact breaker unit with different thickness anvils and requesting a new test. | ||
| View original record | To RHC, from EFC. X8692 EFC6/X 12.12.27. Herewith we hand you the contact breaker mxd unit which you arranged for test with the .080" thick anvil. The result of this test is poorer than the .064"… | ||
| scan 384 | Test results for ignition contact points, focusing on scrubbing action and anvil thickness. | ||
| View original record | To R. from EFC. c. BJ. E. c. Bv. Wor. X8692 EFC5/T12.12.27. IGNITION CONTACT POINTS. At the end of our EFC5/T29.11.27 we remarked that we were running the combination of scrubbing action and no… | ||
| scan 385 | The ongoing tests of different scrubbing arm combinations. | ||
| View original record | -2- Contd. We now have running :- (1) A thinner scrubbing arm of the original long Lec.2422 type, the thickness tapering from the support end down to the point end. (2) Original type scrubbing action… | ||
| scan 386 | Requesting further modification to three contact breaker levers already fitted with tungsten points. | ||
| View original record | To RHC. from EFC. X2894 EFC8/T21.12.27. Herewith we hand to you 3 contact breaker levers duly fitted with tungsten points by Messrs. Reynolds. Would you please have fitted to these the spring anchor,… | ||
| scan 387 | Standardisation of a battery ignition contact breaker with a new spring design for reduced stress. | ||
| View original record | RR 785 REVISED (10H) (DE649 9-12-26) BM. 2/1187. X8692 COMPLETED 22.12.27 STANDARDISATION of CHASSIS PARTS. Date 14.11.27 X No. 8692 Drawing No. LeC.2460 Description of Parts. Battery ignition contact… | ||
| scan 388 | Form for the standardisation of chassis parts. | ||
| View original record | STANDARDISATION of CHASSIS PARTS. (1) The number of the first chassis on which the new part will be fitted. F2. and M. (2) Date when the chassis will be handed to test. 28.4.28 / 1.4.28. (3) Cost of… | ||
| scan 389 | Test results for three different ignition contact points, highlighting issues with riveting tungsten points. | ||
| View original record | To R. from EFC. c. BJ. E. c. Ev. Wor. X2894 EFCA/T23.12.27. IGNITION CONTACT POINTS. X8692 Three further results are being sent for your inspection. One of these has run 10,000 miles on the bench with… | ||
| scan 390 | Test report on a 10% gold and 90% silver alloy used for cutout contact points. | ||
| View original record | EFC4/T23.12.27. -2- Contd. turns out to be 10% gold 90% silver alloy, i.e. the same alloy that we are using for our cutout contact points. Accordingly we had a standard lever and screw fitted with… | ||
| scan 391 | Experiments with tungsten ignition contact points, testing various feature combinations. | ||
| View original record | To R. from EFC. c. BJ. E. c. Hy. Wor. 12894 EFC1/T14.1.28. TUNGSTEN IGNITION CONTACT POINTS. In our EFC6/T29.11.27 we put down four experimental features, (see slip) which we were trying on our… | ||
| scan 392 | Test conclusions on ignition distributor components, including break cams and scrubbing action. | ||
| View original record | Contd. -2- EFC/T14.1.28. The conclusions to be drawn from this series of tests is that in spite of the fact that we had previously determined that the removal of the distributor was no advantage… | ||
| scan 393 | The results of tests on ignition system components, including tungsten points, condensers, and various coils, with plans for further experimental work. | ||
| View original record | -3- Contd. No.14 is a further and final test on tungsten points run with the maximum value condenser, but otherwise old standard conditions. No.41 has been run with the U.S.A. Bosch central H.T. coil… | ||
| scan 394 | List of four indicated items related to a mechanism. | ||
| View original record | 14.1.28. Items indicated by Nos. 1, 2, 3, and 4 are as follows :- (1) No distributor. (2) Scrubbing action. (3) Off-set lever. (4) Quicker break cam. EFC. | ||
| scan 395 | Declining the replacement of platinum iridium points with tungsten points due to necessary modifications and testing. | ||
| View original record | Roy. from EFC. X2894 EFC4/T14.1.28. TUNGSTEN POINTS. With reference to your enquiry as to the possibility of the replacement of platinum iridium points E.327 by tungsten points, I am afraid we cannot… | ||
| scan 396 | Results of a 10,000-mile bench test on tungsten contact points. | ||
| View original record | To R. from EFC. c. BJ. Wor. c. E. By. c. Da. X8692 EFC4/T7.2.28. TUNGSTEN CONTACT POINTS. Further to our EFC1/T14.1.28, the test of tungsten points run 10,000 miles on the bench with a thinner (.050")… | ||
| scan 397 | Suppliers of Tungsten Contact Points and seeking an opinion on their quality compared to a new supplier. | ||
| View original record | X2894 ROY/MS2/P.25.2.28. RECEIVED FEB 25 1928 EFC. REC'D In the early days of testing out Tungsten Contact Points (1921-2) we obtained points from the following firms:- Tungsten Manufacturing Co. Ltd.… | ||
| scan 398 | Purity and testing of tungsten contact points for a secondary supplier. | ||
| View original record | To Roy/Ms. from EFC. X2894 EFC1/T27.2.28. TUNGSTEN CONTACT POINTS Answering your Roy/Ms2/P25.2.28, we have not tested the tungsten points referred to in the present day conditions. It has been… | ||
| scan 399 | Recommended and tested spring loads for a contact breaker. | ||
| View original record | To BY/RD. from EFC. X8692 EFC2/T5.3.28. SCRUBBING ACTION OF CONTACT BREAKER TO LEC.2460. Will you kindly note that our recommended loads in connection with this spring are as follows :- Load on… | ||
| scan 400 | Letter from The L.P.S. Electrical Co. Ltd. regarding an order for three pairs of contacts and suggesting a standard alternative. | ||
| View original record | COPY OF LETTER. Y2894 FROM:- THE L.P.S.ELECTRICAL CO.LTD. AVENUE ROAD, ACTON, LONDON. W. 3. REF:- JL/IVB. Messrs Rolls Royce Ltd Derby. 6th March 1928. Dear Sirs, We thank you for your letter of 5th… | ||
| scan 401 | Tungsten contact points and samples from suppliers. | ||
| View original record | EFC. V2894 ROY/MS17/P15.3.28 TUNGSTEN CONTACT POINTS. Yours EFC1/T27.2.28. We attach hereto a copy of a letter we have received from the L.P.S.Electrical Co. together with sample Contact Screws and… | ||
| scan 402 | Letter regarding the dispatch of Tungsten contact points, including screws, levers, and riveting instructions. | ||
| View original record | SUMMARISED ASSEMBLY NAME OF ASSEMBLY X2894 ROY/MS13/P.16.3.28 EFC. TUNGSTEN CONTACT POINTS Yours:- EFC1/T27.2.28. Further to ours- ROY/MS17/P15.3.28, we send you herewith three Contact Screws D.71501… | ||
| scan 403 | The electrical ignition fittings for a 15-EX Phantom Chassis with a sports body after 9000 miles. | ||
| View original record | X.8692. Extract from Hs/CWH/LG1 7.3.28. REPORT ON 15-EX PHANTOM CHASSIS WITH SPORTS BODY (9000 MILES) ELECTRICAL FITTINGS - IGNITION. Distributor fitted with scrubbing contact to LeC.2460. Standard… | ||
| scan 404 | The experimental testing of battery ignition contact breaker levers and the correct method for fitting tungsten points. | ||
| View original record | To RHC. from EFC. c. BY/RD. X2894 EFC3/T21.3.28. TUNGSTEN POINTS. Herewith we hand to you three battery ignition contact breaker levers duly fitted with tungsten points by the Tungsten Manufacturing… | ||
| scan 405 | Experimental fitting of tungsten tipped ignition points sent from an external company. | ||
| View original record | To EHC. from EFC. K. BY/RD. X2894 EFC4/T21.3.28. TUNGSTEN POINTS. We hand you herewith two small envelopes, one containing three tungsten tipped steel rivets, and one containing three tungsten tipped… | ||
| scan 406 | On the failure of make & break levers due to loose tungsten points and the subsequent plan for testing new parts. | ||
| View original record | COPY. ROY. c. WOR. c. Sft. c. Mx. X 2894 BY7/G.3.4.28. MAKE & BREAK LEVERS. BATTERY IGNITION. PHANTOM & 20-HP. We have had a further failure on test due to the tungsten point coming loose in the… | ||
| scan 407 | Urgent memorandum regarding production difficulties with riveting tungsten points. | ||
| View original record | V2894 RHC. from EFC. EFC6/T11.4.28. TUNGSTEN POINTS. Would you kindly note that in view of the difficulty with tungsten points on production (i.e. difficulty of riveting without cracking the point)… | ||
| scan 408 | Procurement of tungsten points and associated components for testing rigs. | ||
| View original record | SFT. from EFC. c. Sft/Mr. Brock. x2894 EFC7/T11.4.28. RE TUNGSTEN POINTS Referring to your telephone conversation, the position at the moment is that we have three sets of levers and points by the… | ||
| scan 409 | Make & Break Levers for the 'Phantom' and 20-HP chassis models. | ||
| View original record | HEW to note Noted [Stamp: RECEIVED APR 1928] X. 2894 ROY/AE3/P.12.4.28. BI. c. to or. [struck through] c. to Sft [struck through] c. to EFC c. to Ex. [struck through] c. to Sft/Mr. Brock MAKE & BREAK… | ||
| scan 410 | Letter from a supplier discussing issues with loose rivets in contact fingers and proposing a new fixing method. | ||
| View original record | COPY OF LETTER. FROM :- WH. H. REYNOLDS & CO. KEY HILL DRIVE. Ref:- DCD/JH/644. BIRMINGHAM. 5th April 1928 Messrs. Rolls Royce Ltd. DERBY. Dear Sirs, In reply to yours ref. ROY/MS4/P4428, we note your… | ||
| scan 411 | Electrical experimental record sheet for testing tungsten points, tracking mileage and maintenance. | ||
| View original record | X2894 ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 2894 Tungsten points (ground flat) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. |… | ||
| scan 412 | Typed memo arranging for the handover of levers for testing. | ||
| View original record | EFC. C.C. BY. [Struck through] C.C. Mr.Brock. [Struck through] X 2896 SFT.2/LMG. 11. 4. 28. I send you herewith a copy of memo, received from BY. As explained to you, we have not the capacity to carry… | ||
| scan 413 | Instructions to E.F.C regarding the testing of 10 contact levers fitted with rubbing blocks. | ||
| View original record | RR 239 (100 BKS.) [SH57.29-9-20.] MP 22435B X.2894 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.C. 12-4-1928 Order No. Customer's No. Herewith 10 Contact Levers fitted up with rubbing blocks etc. I am… | ||
| scan 414 | Proposing the removal of a file from the tool kit due to the introduction of tungsten make and break contact points. | ||
| View original record | EFC. X2894 BY/Cgh7/G.13.4.28. MAKE AND BREAK CONTACT POINTS. With reference to the tungsten points which we are now fitting on the make and break levers, as you are aware we include a small file in… | ||
| scan 415 | Supplier issues with make and break levers for the 20 HP & Phantom models. | ||
| View original record | ROY. c. WCR. c. Sft. c. EFC. c. MX. V2894 BY/Cghb/G.14.4.28. MAKE AND BREAK LEVERS - 20 HP. & PHANTOM. With reference to ROY/M63/P.12.4.28. and copy of letter received from Messrs. W. H. Reynolds &… | ||
| scan 416 | The 'Make and Break' levers for the 20 HP and Phantom models. | ||
| View original record | ROY. c. Wor. c. Bft c. EFC. c. Mx X2894 BY/Cgh3/G.16.4.28. MAKE AND BREAK LEVERS - 20 HP. & PHANTOM. Further to our BY/Cgh5/G.G.14.4.23. in connection with ROY/Ms3/P.12.4.28. we now understand that it… | ||
| scan 417 | Recommendation for the maintenance of make and break contact points. | ||
| View original record | X 2894 By/Cgh. from EFC. EFC6/T16.4.28. MAKE AND BREAK CONTACT POINTS. We agree to the deleting of the file, and would recommend the inclusion of a small oil stone for re-touching the contacts, which… | ||
| scan 418 | Design modification to the ignition distributor spring to increase contact point pressure. | ||
| View original record | To EFC. X8692 BY/RD3/ML/19.4.28. RECEIVED APR 19 1928 IGNITION DISTRIBUTOR. It has been observed that the spring on the contact finger in the battery ignition distributor, new design to I.e.C.2460/1,… | ||
| scan 419 | Specific L.P.S. tungsten points. | ||
| View original record | X2894 To RHC. from EFC. EFC5/T23.4.28. TUNGSTEN POINTS We should particularly like to have the L.P.S. tungsten points referred to in our EFC4/T21.3.28. EFC. | ||
| scan 420 | The handover of a battery ignition distributor and a quicker break cam for chassis 9-EX. | ||
| View original record | r.y.e. X2894 To HIC. from EFC. E. Ha/JL. EFC6/T2.5.28. We hand you herewith battery ignition distributor to LeC.2460 fitted with tungsten points which have been spun into the lever by The Tungsten… | ||
| scan 421 | Failure of tungsten contact points in battery ignition systems, exploring causes and detailing ongoing experiments with new designs and suppliers. | ||
| View original record | HS. RHC. EFC. ---------- X2894 BY2/G.4.5.28. TUNGSTEN CONTACT POINTS. ------------------------ Immediately we tried to introduce as standard the tungsten contact points on our battery ignition we… | ||
| scan 422 | Extract from a letter concerning tungsten points and misfiring issues. | ||
| View original record | X.2894 Extract from Mr. Minchin's letter of 15th May 1928. With regard to the tungsten points, these have done about 18,000 to 20,000 miles and they have been touched up several times as they caused… | ||
| scan 423 | Testing and failure of battery ignition contact breaker levers with tungsten points. | ||
| View original record | X2894 To EY. from EFC. c. EY/RD. c. SFT. EFC2/T15.5.28. We hand to you (BY) a number of battery ignition contact breaker levers with tungsten points fitted. Attached please find copy of my assistant's… | ||
| scan 424 | Instruction sheet detailing an investigation into failures of tungsten contact points for battery ignition systems. | ||
| View original record | RR 238 (150 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.C. Order No.: WC105 Customer's No.: X2894 Date: 15 - 5 - 1928 Tungsten contact points for Battery Ignition. Owing to… | ||
| scan 425 | 100-hour bench test of distributor levers, noting a rivet failure and proposing soldering as an improvement. | ||
| View original record | RR 238 (150 BKS.) (DB 451-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. 19 To (2) Order No. Customer's No. The levers were run on the bench rigs on a standard distributor at 700 rpm for 100 hrs.… | ||
| scan 426 | Requesting the fitting of spring anchor pins to battery ignition contact breaker levers. | ||
| View original record | Y2894 To FHC. from EFC. EFC2/T17.5.28. We hand you herewith 6 battery ignition contact breaker levers fitted with tungsten points. Will you please have these fitted with the spring anchor pin so as to… | ||
| scan 427 | Testing and potential order for new ignition contact points. | ||
| View original record | To EFC. X2894 BY/RD5/AL/21.5.28. IGNITION CONTACT POINTS. I am handing to Mr Brock 6 levers mounted with a new design of point from the Tungsten Manufacturing Co., will he please finish these off and… | ||
| scan 428 | Levers received from Mr. Brock and the decision not to send them for inspection. | ||
| View original record | X2894 To BY. from EFC. c. HY/RD. c. Mr. Brock. EFC3/T21.6.28. Please find attached copy of WC.112. The levers referred to were handed to us by Mr. Brock. We are not sending the levers for inspection… | ||
| scan 429 | Test report on specially riveted tungsten contact rivets for battery ignition levers. | ||
| View original record | EFC. WC.112. 21.6.28. TUNGSTEN CONTACT RIVETS. We have now tested for 100 hours on the bench six specially riveted tungsten contact breaker levers for the battery ignition. The feature of these rivets… | ||
| scan 430 | Letter from W.H. Reynolds concerning experiments with fixing tungsten rivets into blades and issues with the material splitting. | ||
| View original record | X2894 COPY W.H. REYNOLDS KEY HILL DRIVE, BIRMINGHAM. July 13th 1928. Our ref. DCD/JH/803. Messrs. Rolls-Royce Ltd. Derby. Attention of Mr. H. Royce. Gentlemen, We have further experimented with the… | ||
| scan 431 | Quality of tungsten points from Messrs. Reynolds. | ||
| View original record | To Roy. from EFC. X.2894 EFC1/T17.7.28. REYNOLDS' TUNGSTEN POINTS. Answering your footnote on Messrs. Reynolds' letter ref. DCD/JH/803 of the 13th inst., we know of no reason to suppose that the… | ||
| scan 432 | Comparing the make-ratio speed curve of a new battery ignition contact breaker against an older model and competitor products. | ||
| View original record | To R. from EFC. c. BJ. E. c. EY. Wor. X.8692 EFC5/T14.3.28. R.R. BATTERY IGNITION CONTACT BREAKER. Attached please find copy of make-ratio speed curve of the new R.R. battery ignition contact breaker… | ||
| scan 433 | Graph of the make ratio versus speed curve for a new standard contact breaker. | ||
| View original record | R.R. STANDARD BATTERY IGNITION. MAKE RATIO - SPEED CURVE OF NEW STANDARD CONTACT BREAKER to LEC 2460. MAKE RATIO .7 .6 .5 .4 .3 .2 .1 0 DISTRIBUTOR SPEED. r.p.m. 200 300 400 600 800 1000 1200 1400… | ||
| scan 434 | Stamped document from the Print Room in Derby. | ||
| View original record | ROLLS-ROYCE, LIMITED PRINT ROOM, 14 AUG 1928 DERBY. | ||
| scan 435 | Improving the ignition distributor contact finger for 40/50 and 20 HP chassis. | ||
| View original record | EFC. C. EFC. X.2894 BY/RD3/ML1 5.8.28. IGNITION DISTRIBUTOR - SEC:8120. 40/50 AND 20 H.P.CHASSIS. In order to improve the appearance of our contact finger we obtained 6 pressings, from the standard… | ||
| scan 436 | Successful modifications to the new contact maker LeC. 2460. | ||
| View original record | EFC. from R. copy to BJ. V8692 R7/M20.8.28. I was very pleased to see that the modifications to the new contact maker- LeC. 2460 - have proved to give such good action up to over 10,000 contacts per… | ||
| scan 437 | Cross-reference note regarding further information on Tungsten contact points. | ||
| View original record | X.2894 31.12.30. For further matter relating to Tungsten contact points see X.6057. | ||