Rolls-Royce Archives
| Identifier | Entry | ||
| Scan001 | Trial and development of a new 6-volt coil compared to the standard 4-volt version. | ||
| View original record | X.2512 R8/P31.10.13. To Wor. from R. c. Mr. Ellis. c. J. ______ X.562 - RE 6 VOLT COIL MADE IN WORKS X.1607. X.2512. X.186. I think the 6 volt coil of our own make, which will enable us to use half… | ||
| Scan002 | Query regarding the winding particulars for a 6-volt ignition coil and the number of plates in the condenser. | ||
| View original record | X. 2512. AUTOMOBILES ROLLS-ROYCE (FRANCE) LIMITED. 83, BOULEVARD GOUVION-SAINT-CYR, Le Canadel. El/T24.3.14. Wor for Mcr. X.562 - 6 VOLT IGNITION COIL OF STANDARD DIMENSIONS. X.2512. Would you kindly… | ||
| Scan003 | The necessity of a condenser folding machine for the standardisation of 6-volt coils. | ||
| View original record | X.2512. Wor/Mcr8/L17414. RE 6 VOLT COIL. X.562. X.2512. Na 17-4-14. Mr. Ellis states that it is necessary before we can standardise the above to have a condenser folding machine. Will you please let… | ||
| Scan004 | Confirming a conversation about purchasing a condenser folding machine instead of building one, to aid in standardising the 6 volt coil. | ||
| View original record | X. 2512. Wor2/T27414. X.562. X.2512. Na. M. Confirming my conversation with you last Friday, the 24th inst., that Mr. Royce did not wish us to make a condenser folding machine, but thought it would be… | ||
| Scan005 | Two designs for a modified single spark coil to produce a single spark instead of a series. | ||
| View original record | X 2512 S. & M. T. (S. G.) 645. 19-2-20. G. 2618 To Mr. Ellis. from R. c. J. c. Wor. c. NB. c. E. R9/P28.5.14. X.1317 - SINGLE SPARK COIL. X.562. X.2512. X.1520. We send you two designs of a coil… | ||
| Scan006 | Providing specifications for a standard chassis coil in response to a query. | ||
| View original record | X.2512. X.562 - RE STANDARD CHASSIS COIL. X.2512. X.1607 E. 1.9.15. Wor/Mcr4/L195. In reply to your memo E2/IB25815, we are having sent to you under separate cover all the parts of the coil that you… | ||
| Scan007 | Modifications to the battery ignition system for cars equipped with a self-starter. | ||
| View original record | To Wor. for Mr. Ellis } from R. EH. } X. 2512. c. to EY. R2/B10.7.17. X.2814 X.3199 X562 X.3716 X1819 X2512 X.543 X699 X.186 RE BATTERY IGNITION FOR CARS &C. Where a self starter is used, as in the… | ||
| Scan008 | Positioning and capacity of ignition condensers and the future adoption of electric starters. | ||
| View original record | Contd. -2- R2/10.7.17. magneto ignition. This will result in the two ignitions being always synchronised which may benefit the running of the engine considerably. Regarding the position of the… | ||
| Scan009 | The cost and performance benefits of synchronised battery and magneto ignitions over trembler ignitions. | ||
| View original record | Contd. -3- R2/B10.7.17. at present using. Not only would there be a considerable saving in cost, but there would be no troublesome trembler, and the battery and magneto ignitions can be exactly… | ||
| Scan010 | Extract discussing the placement and use of condensers in trembler ignition systems to reduce the burning of platinum points. | ||
| View original record | X. 2512. Extract from R10/W14.8.19. X.1607. (struck through) X.2512 With reference to the tremblers belonging to the car it appears that the American Battery Ignition people find, as we have found,… | ||
| Scan011 | From 'R.' to 'Mr. Ellis' with instructions for converting and testing a battery ignition system. | ||
| View original record | To Mr. Ellis from R. c to EH. c. to BJ. X. 2512. R17/W27.8.17. RE BATTERY IGNITION You will remember that I have asked you to convert the battery ignition on 7-CA to the non-trembler type, using our… | ||
| Scan012 | Conversion of a battery ignition system to a non-trembler type for engine 7-CA. | ||
| View original record | X.2512. To Mr. Ellis from R. c. to EH. c. to BJ. R17/W27.8.17. X.2814. X.1819. X.2512. X 3761 X.3129. RE BATTERY IGNITION. You will remember that I have asked you to convert the battery ignition on… | ||
| Scan013 | Letter to Commander Bristow regarding the development and improvement of a battery ignition system for aero engines. | ||
| View original record | X.2512 Extract from R6/W5.9.17. Letter to Commdr. Bristow. X.3173 - BATTERY IGNITION FOR AERO ENGINES. X.2512. X.3199. X.1819. Regarding the battery ignition this has to be delayed owing to pressure… | ||
| Scan014 | Calculation of the capacity of a condenser. | ||
| View original record | W.H. 235 a (100) T) (S.F. 575. 16-4-19) G. 2354. X.2512. 28.12.17. X2012 CALCULATION OF CAPACITY OF CONDENSER. Let capacity reactance be w ohms. w = volts/amps. = 1/pK (dimensions LT⁻¹) So that K =… | ||
| Scan015 | The calculation of inductance of a coil. | ||
| View original record | X 2512 CALCULATION OF INDUCTANCE OF COIL. Let impedance be Z ohms. and resistance be R ohms. Then reactance = X = √Z² - R² ohms. Reactance = pL = X L = X/p (dimensions LT⁻¹ / T⁻¹ = L) henries = ohms x… | ||
| Scan016 | Requesting a modified trembler coil for a battery ignition system, including a hand-drawn diagram. | ||
| View original record | To EFC. from R. c. to CJ. c. to EH. X-2512. R5/G12.3.18. X.1520. RE TREMBLER COIL. X.562. X.704. X.3761. X.2512. X.1607. With reference to the trembler on 7-CA this battery ignition now works very… | ||
| Scan017 | Specifications and volume requirements for a battery ignition condenser for a 12-volt coil. | ||
| View original record | X.2572 To R. from EFC. c. to CJ. c. to E. EFC3/T20.4.18. X.3173 - BATTERY IGNITION. X2572 With reference to your note R1/G17.4.18, and Mr. Elliott's note E4/G18.4.18, regarding the above, we have… | ||
| Scan018 | Suitability and testing of a 12-volt battery ignition system. | ||
| View original record | -2- Regarding the voltage for this battery ignition, we see no reason for the moment why the 12 volts should not be quite a suitable voltage using, of course, a suitable ballast resistance in series… | ||
| Scan019 | Table of approximate capacitance values in microfarads for various experimental condensers. | ||
| View original record | X.199. 5-7-18 APPROXIMATE CAPACITIES IN MICROFARADS OF EXPERIMENTAL CONDENSERS 18.6.18 . 5.7.18. M 1. .105 M 2. .140 M 4. .195 .18 E.F.C. .550 W.E. .475 Liberty. .38 R.R. 1. .12 R.R. 2. .07 .065 R.R.… | ||
| Scan020 | Condenser capacity issues related to battery ignition systems. | ||
| View original record | X.2512. Extract from EFC2/T5.6.18. (To RHC). X.3173 - BATTERY IGNITION. Condenser. None of the condensers so far produced have been up to specified capacity. This is principally due to the thickness… | ||
| Scan021 | Investigating disappointing test results on platinum points due to an under-capacity condenser for the battery ignition. | ||
| View original record | X2572 To R. from EFC. c. to CJ. c. to E. c. to EY. c. to EP. c. to EH. c. to EY/HBC. EFC3/T18.6.18. X.3173 - CONDENSER FOR BATTERY IGNITION. X2572 Referring to your note F6/G12618. I think we may put… | ||
| Scan022 | Condenser capacity tests to quench sparks on platinum points and plans for future long-run tests. | ||
| View original record | -2- EFC3/T18.6.18. Contd. condenser, however, will be very much more bulky than is intended in the final product. It will be seen from the other report attached hereto, that further tests have shown… | ||
| Scan023 | Modifying a pocket voltmeter to improve the measurement of condenser capacities. | ||
| View original record | X2512 To RHC. from EFC. EFC2/T2.7.18. X.975 - RE POCKET INSTRUMENT FOR COMPARISON CONDENSER CAPACITIES. X.2512. We handed to your Mr. Gamble yesterday afternoon a small 12 volt pocket volt meter. We… | ||
| Scan024 | Report discussing the fitment of Truffault shock absorbers, starter motors, and battery ignition systems for the 7-CA chassis model. | ||
| View original record | E.B. 297/7 (B.D. 408. 26-4-17.) Bm. 2/156/13. X.2572. E.H.G. / 5.1.19. R.H / 9.261118 -2- Contd:- give their opinions whether piston knocks can be accepted. X.462. (2) SHOCK ABSORBERS 7-CA. is fitted… | ||
| Scan025 | Ignition gear modifications, condensers, and issues with trembler coils. | ||
| View original record | -6- R4/G261118. Contd. at least 2500 before leaving the cams, as we have found that many valve springs have been broken through the valve motion jumping the cams. (11) IGNITION GEAR: X.3129.✓ We… | ||
| Scan026 | Continued note regarding modifications to coils and condensers for existing cars. | ||
| View original record | J. & E. Ld. (900 T) (S.D. 408. 25-4-17.) Bm. 2/156/13. -7- R4/G261118. Contd. considerably better than any we bought, which I have confirmed by recent observations of purchased coils. It will be… | ||
| Scan027 | The setup and parameters for a temporary non-trembler ignition system on chassis 7 CA. | ||
| View original record | COPY To R. from EFC. c. to CJ. c. to E. c. to Ry. c. to EP. c. to Da. c. to EH. X-2512 EFC1/AT10.12.18. 1 X.3129 X.682.-RE TEMPORARY NON-TREMBLER IGNITION FOR 7 CA. We are rigging up on a chassis 7 CA… | ||
| Scan028 | Technical discussion comparing different types of trembler and chassis coils for an ignition system. | ||
| View original record | -2- EFC1/AT101.21S. Contd. chassis type trembler coil made for 12 volts, but used, of course in this instance, as a plain coil. No.2 is a 6 volt type chassis coil used similarly. No.3 is the aero type… | ||
| Scan029 | The performance of a distributor arm and experiments with condensers for spark suppression. | ||
| View original record | EFC1/AT101218. Contd. -3- the leading corner of the distributing arm (this, of course, being the same for all positions of advance and retard) and should the engine rebound the break running backwards… | ||
| Scan030 | Condenser design and the beneficial effects of adding a high tension wire to suppress flashing at the primary points. | ||
| View original record | EFC1/ATC1218. Contd. -4- state that it is not only necessary to connect the condenser itself to the points by as short wires as possible, but it is also necessary that the condenser (of given… | ||
| Scan031 | Effects of adding a high-tension coil to an ignition system to reduce sparking. | ||
| View original record | E.B.R. (G.D's) M. of D. 408. 26-4-17.) Bm. 2/156/13. EFC1/AT101218. Contd. -5- A coil with about a dozen turns of high tension wire insulat-ed at one end and connected to the high tension terminal of… | ||
| Scan032 | Test data sheet for various ignition coils on a chassis ignition contact breaker. | ||
| View original record | 10.12.18. COILS TO BE TRIED ON R.R. CHASSIS IGNITION CONTACT BREAKER. No. Coil. Resistance. Inductance. Make ratio. Cap. Total Resistance. Ballast Resis. L.M.S. Current. Ballast Volts. 1. No.0 3.50… | ||
| Scan033 | Request to produce four small ignition condensers for experiments with specific dimensions. | ||
| View original record | To Mr. Coverley. From EFC. X.2512. EFC8/T12.12.18. X.2512 RE CONDENSERS FOR IGNITION EXPERIMENTS. X 3199 X 3129 Will you kindly have made up with all possible speed, four more small ignition… | ||
| Scan034 | Modifications to a non-trembler battery ignition system for a post-war chassis. | ||
| View original record | To BY. from EFC. C. to BY/HBO. Extract from -- EFC4/T13.12.18. X.2512. X.3129 - NON TREMBLER TYPE BATTERY IGNITION FOR POST WAR CHASSIS So far as we can say at present, as the result of preliminary… | ||
| Scan035 | Technical note on updating the battery ignition system, including a suggestion from Mr. Royce. | ||
| View original record | X.2512 COPY Extract from R7/G181218. (3) BATTERY IGNITION. The R.R. aero jump spark coil is to be used in place of our present trembler. The existing distributor and low tension contact maker on the… | ||
| Scan036 | Extract detailing the specified position of the distributing box on the dashboard. | ||
| View original record | Extract from R7/G18.12.18. X.2512. All fuses and other connections would be referred to the distributing box on the dashboard, which would occupy a position a few inches above the top of the… | ||
| Scan037 | Confirming modifications to the battery ignition system for chassis 49-GB. | ||
| View original record | To THC. from EFE. X. 2512. extract from EFC/AT20.12.18. X. 3129 - RE BATTERY IGNITION FOR 49-GB. This is to confirm that, as arranged in conversation, you will have removed the Aero type contact… | ||
| Scan038 | Modifying instructions for the production of condensers for battery ignition systems. | ||
| View original record | To RHC. from EFC. X.2512. EFC2/T3.1.19. X.2512 FE CONDENSERS FOR BATTERY IGNITION X3199 X3129 Regarding condensers ( instructions EFC6/T121218 and modified instructions under EFC/AT201218) owing to… | ||
| Scan039 | Confirming the production of two condensers for battery ignition and instructions for two more. | ||
| View original record | X. 2512 6.1.19. X-2512 (struck through) X.3129 CONDENSERS FOR BATTERY IGNITION. X.3199 (struck through) The two condensers as instructed by EFC6/AT121218 have been made and handed to Mr. Clark. Two… | ||
| Scan040 | Ordering mica plates and investigating their thickness to improve the capacity of condensers for battery ignition. | ||
| View original record | Mr. Coverley. from EFC. X. 2512. EFC4/T8.1.19. CONDENSERS FOR BATTERY IGNITION We have instructed the Order Office to order up 3000 mica plates F.6562 for the purpose of making up condensers. At the… | ||
| Scan041 | Expressing anxiety over the reliability of a single spark non-trembler ignition coil scheme. | ||
| View original record | X.2512. Extract from EY10/P14.1.19. X 3129 CHASSIS - RE IGNITION COILS. X 562 X 1604 X 2512 I am most anxious if there is a slight doubt as to the reliability of the single spark non-trembler scheme… | ||
| Scan042 | Table listing the approximate capacities in microfarads of various experimental condensers. | ||
| View original record | X.3129. X.2512. 16.1.19. Handwritten Note (top left): X2512 (crossed out) Handwritten Note (top right): X3129 / X3173 APPROXIMATE CAPACITIES IN MICROFARADS OF EXPERIMENTAL CONDENSERS. Condenser.… | ||
| Scan043 | The performance of ignition coils and contact breakers, detailing current consumption and mechanical operation. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. X.2812. -3- EFC5/T4.2.19. Contd. 2. Comparative volt-ampere characteristic curves of a 12 volt 48 watt M.I. lamp and of nickel wire ballast… | ||
| Scan044 | Continued report on testing 'B' coil and ballast lamp configurations for a vehicle's electrical system. | ||
| View original record | R.R. 235a (500T) (S.D. 408. 26-4-17.) Bm. 2/156/13. -4- EFC6/T4.2.19. 2 Contd. tions, even with the 'B' coil, is very reasonable; we wish to try this out on the bench as a life test under exactly the… | ||
| Scan045 | Requesting a pattern and six castings be made for a Condenser Casing. | ||
| View original record | To Mr. Cheetham. c. to Mr.Coverley. c. to EFC. X.2512. 18th March 1919. X.3129. EY/HBO3/DW18319. CONDENSER FOR BATTERY IGNITION. - SEC.7370 Herewith blueprint of Condenser Casing F.7172. Kindly make… | ||
| Scan046 | Drawings for Mica and Tinfoil plates and arranging for the manufacture of dies for a condenser. | ||
| View original record | Mr.Moon from BY/HBO. c. to Mr. Coverley c. to EFC. X.2512. BY/HBO1/DW18319. 18th March 1919. CONDENSER - SEC.7370. Herewith drawings of Mica and Tinfoil Plates:- F.7167, F.7168, & F.7169. Will you… | ||
| Scan047 | Components for manufacturing five different condensers for battery ignition. | ||
| View original record | To Mr. Coverley. from BY/HBO. X.2512. c. to EFC. BY/HBO2/DW18.3.19. X.3129 -CONDENSER FOR BATTERY IGNITION SEC: 7370. Herewith Arrgt. drawing F.7181. and complete set of details to enable you to… | ||
| Scan048 | Internal memorandum regarding the design, drawings, and production of a condenser for battery ignition. | ||
| View original record | INA.618. 1.4.19. H.H. Mr. Moon. from BY/HBO. X. 2512. BY/HBO1/WW1.4.19. c. to EFC. c. to O.O. c. to Mr.Coverley. c. to Mr.Brock. X.3129 - RE CONDENSER FOR BATTERY IGNITION - SEC:7370. Herewith L.O.P.… | ||
| Scan049 | Technical memo discussing design updates for shock dampers, back axle, brakes, and ignition systems. | ||
| View original record | Contd. X 2572 -6- EFC E6/G1.5.19. It is thought that the same fitting in a slightly different form can be made to provide a detachable seat without scrapping the castings already made of the… | ||
| Scan050 | Obtaining quotations for 250 sets of condensers for the 40/50 HP chassis from an outside firm. | ||
| View original record | To By. from Bn. u. to EH. c. to Wor. X.2512. BM2/P13.5.19 RE CONDENSERS FOR 40/50 H.P. CHASSIS X.3129 Will you please instruct the Order Office to obtain quotations and proceed with a view to… | ||
| Scan051 | Handover of 'A' and 'E' type condensers for testing. | ||
| View original record | To EFC. from RHC. c. to EH. X 2512 RHC1/LG14.5.19. 14th. May 1919. X 2512 RE CONDENSER - X.3129. We are handing to Mr. Clark a small type Condenser for test made up from 95 mica plate which we call… | ||
| Scan052 | Urging the finalization of the chassis condenser's capacity without further delay. | ||
| View original record | EFC. from By. X.2512. BY15/P15.5.19. X.3129 - CHASSIS CONDENSER Is it not possible for you to fix up something definitely in regard to the capacity of the proposed condenser for the chassis, so that… | ||
| Scan053 | Measured capacities of two battery ignition condensers and the required capacity for the standard condenser. | ||
| View original record | To BY. from EFC. c. to EY/HBO. c. to Mr. Coverley. X 2572 EFC2/T16.3.19. X.3129 - BATTERY IGNITION - CONDENSERS X2572 In answer to your EY15/F15.3.19., we have now received from Mr. Coverley two… | ||
| Scan054 | Clarifying the required capacity for a chassis battery ignition condenser. | ||
| View original record | RR 936 a (200 T) (S.F. 103, 25-10-18) G. 2244 Mr Mills from BY. c. EFC. c. Mr Ormerod. [text is struck through] X 2572 BY6/P19.5.19. X-3129 CHASSIS - BATTERY IGNITION. RE CONDENSER. X 2572 Will you… | ||
| Scan055 | Confirmation of a telegram from Royce to Barrington about ballast resistance and a condenser for the Forty Fifty model. | ||
| View original record | X.2512. 20th May 1919. CONFIRMATION OF TELEGRAM BARRINGTON RE BALLAST RESISTANCE FOR FORTY FIFTY WE SUGGEST THIS MIGHT BE MORE EASILY FITTED ON DISTRIBUTION BOARD ON DASH STOP HAVE CONFERENCE WITH… | ||
| Scan056 | Confirmation of a telegram regarding an objection to a spiral spring connection for a condenser. | ||
| View original record | X. 2512. CONFIRMATION OF TELEGRAM ROYCAR DERBY. BARRINGTON DOES NOT CLARK OBJEFT TO SPIRAL SPRING CONNECTION FOR CONDENSER ON CONTACT MAKER STOP SELF INDUCTION IN THIS MIGHT EVEN MAKE CONVOLUTIONS… | ||
| Scan057 | Telegram from Mr. Barrington to Mr. Royce concerning design changes and production issues for ballast resistance and condensers. | ||
| View original record | R.R. 255. (100 T) (S.P. 575, 16-4-19) C. 2554. X. 2512. COPY OF TELEGRAM SENT BY MR BARRINGTON TO MR ROYCE YOUR TWO TELEGRAMS CONCERNING BALLAST RESISTANCE AND CONDENSER. CONFERENCE HELD TODAY… | ||
| Scan058 | Telegram from Royce discussing the design of a condenser, ballast resistance, and distributor box. | ||
| View original record | X. 2512. COPY OF TELEGRAM SENT FROM R+ TO BN. YOUR TELEGRAM CONFIRMS MY ANTICIPATIONS. WE SENT YESTERDAY DESIGNS FOR MUCH MORE PRACTICAL SCHEME OF CONDENSER. THIS SEEMS VERY SIMPLE AND WE HOPE IT CAN… | ||
| Scan059 | Internal memorandum discussing production changes for condensers on the 40/50 HP chassis. | ||
| View original record | W.M. 255 a (100 T) (S.F. 575. 16-4-19) cl. 2354. Wor. from Bn. c. to CJ. c. to R. c. to Da. c. to EY. c. to Mr. Swift. c. to EH. X.2512. FE CONDENSERS FOR 40/50 HP. CHASSIS Confirming my conversation… | ||
| Scan060 | Continued memo discussing the incorporation of a new design instead of attempting to fix the original. | ||
| View original record | R.H. 235 a (100 T) (S.F. 575, 16-4-19) G. 2354. Contd. -2- Bn4/P23.5.19. that it is essential that we should incorporate this new design instead of attempting to get right the original one. Bn. | ||
| Scan061 | Material choices and issues like contact splashing for a condenser in a battery ignition system. | ||
| View original record | H.R. 285 A (100 T) S.P. 575. 16-4-19) (1. 2554. To R. from EFC. c. to CJ. c. to E. c. to Da. X.2512. EFC1/T27.5.19. X.3129 - RE CONDENSER FOR BATTERY IGNITION. Referring to LeC.1091, this would appear… | ||
| Scan062 | Report calculating the frequency of oscillations in a circuit with a condenser and a lamp. | ||
| View original record | Contd. -2- EFC1/T27.5.19. that silver acts passibly well for make and break contacts. EFC. Since writing the above, we have now proved by inserting a small 4 volt one ampere lamp in series with the… | ||
| Scan063 | Cancelling an order for 250 old-type condenser sets and instructing to proceed with a new design. | ||
| View original record | X.2512. Mr. Mills from BY. c. to BN. c. to DA. c. to EFC. By3/P28.5.19. CHASSIS - RE CONDENSERS Will you kindly note that the condenser I instructed you to place on order with an outside firm, for 250… | ||
| Scan064 | Progress on experimental condensers and vibrator regulators for the chassis electrical outfit. | ||
| View original record | R.R. C/50 (1000 T) (S.P. 573. 16.4.19) C. 2554. To BY. from EFC. X. 2512. X 3560 EFC4/T30.5.19. RE CHASSIS ELECTRICAL OUTFIT - CONDENSERS AND VIBRATOR REGULATORS We have the impression that you have… | ||
| Scan065 | Print of a condenser for the 40/50 H.P+ Chassis. | ||
| View original record | To M. EH. By. EFC. X.2512. Dal2/CB4.6.19. 40/50 H.P+ CHASSIS - CONDENSER Please receive herewith a print of LeC.1091 - Condenser for 40/50 Chassis for your information. Da. R.R. 235 (1000) (S) 229.… | ||
| Scan066 | Requesting enquiries be made for an electrical instrument to measure condenser capacities. | ||
| View original record | R.R. 884. e. 100 T: (B.F. 846. 6-8-18) G. 2460. X. 2512. EFC2/T4.6.19. To C.O. from EFC X.975 RE ELECTRICAL INSTRUMENT FOR THE MEASUREMENT X.1782. OF CONDENSER CAPACITIES. X.2512. X.2434. Will you… | ||
| Scan067 | Sourcing difficulties for electrical ignition condensers and vibratory regulators for dynamos. | ||
| View original record | H & R 835a (200 T) (S F. 103 25-10-18) G 2244. EFC. from BY. X 3129 (crossed out) X 2572 BY3/P11.6.19. RE CHASSIS - ELECTRICAL IGNITION. CONDENSER. Mr Mills informs me that neither the B.T.H. nor the… | ||
| Scan068 | Measurement of condenser capacities by Weston A.C. Milli-ammeter. | ||
| View original record | R.R. 235 a (100 T) (RV. 575. 16-4-19) G. 2354. X. 2512 30.6.19. X. 2512 X. 2434 X. 3129 MEASUREMENT OF CONDENSER CAPACITIES BY WESTON A.C. MILLI-AMMETER X 2512 (1) R R.12 condenser used for packing up… | ||
| Scan069 | Continued list of test readings for various condensers, showing corrected readings, differences, and capacity. | ||
| View original record | Contd. -2- (3) Other condensers :- Condenser. Corrected reading (m.a.) Difference (m.a.) Capacity (mf). R.R.2 .0192 .0042 .072 R.R.8 .02435 .00935 .161 R.R.A .0215 .0065 .112 R.R.D♭ .0291 .0141 .242… | ||
| Scan070 | Seven-step testing procedure for a condenser. | ||
| View original record | X.2512 24.7.19. X.3129 X.2512. CONDENSER PROCEDURE. X.1627 1. Condenser built up in shop but not encased. 2. Tested for 30 minutes on alternating voltage of 220. 3. Tested for 10 minutes on… | ||
| Scan071 | Failures in chassis type condensers due to cracks in mica plates and proposing ordering pre-cut plates for experimentation. | ||
| View original record | To Mr. Coverley. from EFC. X.2512. EFC3/T28.7.19. RE CHASSIS TYPE CONDENSERS. Regarding the question of condensers, we do not seem to be entirely successful with these up to the present. We rather put… | ||
| Scan072 | Testing procedures and reliability of condensers for chassis. | ||
| View original record | Contd. -2- EFC3/T28.7.19. with those we have ourselves built up. Until this week we have been testing condensers built up by you, by applying a voltage of 200 from the main to the condenser for half… | ||
| Scan073 | Supply of condensers and the repair of a broken ignition condenser for use as a standard. | ||
| View original record | Contd. -3- EFC3/T28.7.19. that we can satisfactorily make these in time, but that the Electrical Production Dept. will probably be too full up with other work to undertake this. The G.E.C. have been… | ||
| Scan074 | Confirmation to order 1500 mica condenser plates and obtain magneto condensers for comparative testing. | ||
| View original record | To O.O. from EFC. c. c. to Stores. EFC4/T28.7.19. RE CONDENSER PLATES. X.2572 This is to confirm that as arranged in conversation on Saturday, you will order up a number (1500 would be convenient) of… | ||
| Scan075 | Extract from a report detailing an electrical fault caused by a failed condenser on Chassis 1 EX. | ||
| View original record | X.2512 X.2512. X.3129. CHASSIS 1 EX. Extract from Bn5/W28.7.19. ELECTRIC EQUIPMENT. The wiring on this car was not finished in accordance with our standard proposals, and had only a temporary junction… | ||
| Scan076 | Letter from The General Electric Co Ltd regarding enquiries for potential transformers. | ||
| View original record | X.2512 CONTRACTORS TO H.M. ADMIRALTY, WAR OFFICE, INDIA OFFICE, G.P.O. AND THE LEADING HOME & FOREIGN RAILWAYS Telegraphic Address: 'INSULATOR,' BIRMINGHAM. Telephone (BIRMINGHAM) CENTRAL 6404 (3… | ||
| Scan077 | The electrical requirements and testing for condensers supplied by G.E.C. | ||
| View original record | To O.O. from EFC. X 2512 EFC1/T1.8.19. X.2512 RE CONDENSERS MADE FOR US BY THE G.E.C. X 1627 We consider that the electrical requirements of the condenser produced for us by the G.E.C. to arrangement… | ||
| Scan078 | Letter to The General Electric Co. Ltd. outlining the testing requirements for condensers. | ||
| View original record | X.2512 Copies to BY & CK. Ref.-Wd/EM36/E1.8.19. 1st August, 1919. The General Electric Co.Ltd., 42, High Street, Birmingham. Dear Sirs, X.2512. Condensers F.7334 - Order No.2061 dated 25.7.19. With… | ||
| Scan079 | Progress report on the experimental construction and testing of condensers for battery ignition systems. | ||
| View original record | R.H. 250 x (100 T) (N.F. 575. 16.4.19) (L. 2354. To R. from EFC c. to CJ. c. to Bn. c. to EH. c. to Wor. c. to By. EFC3/T1.8.19. X.2512. - RE PROGRESS OF EXPERIMENTAL CONSTRUCTION OF CONDENSERS. A… | ||
| Scan080 | The testing of condensers and experimentation with different varnishes for insulation. | ||
| View original record | R.R. 293 - (100 T) R & S. 575. 16.4.19) C. 2554. Contd. -2- EFC3/T1.8.19. 1. Condenser built up in shop but not encased. 2. Tested for 30 minutes on alternating voltage of 200. 3. Tested for 10… | ||
| Scan081 | Continued page of a memorandum or report, being page 3. | ||
| View original record | R.R. Bde (200 T) (S.V. 673. 22-5-19) G. 2376 Contd. -3- EFC3/T1.8.19. does not appear to be anything like as thick and heavy. EFC. | ||
| Scan082 | Communicating special test requirements for condensers to the manufacturer, General Electric Company. | ||
| View original record | B H 211A 100 T/S P 673. 22-6-19 G. 2376. Ck. from BY. X.2512 BY2/P5.8.19. CHASSIS. CONDENSERS - BATTERY IGNITION. Referring to your memo EFC3/T1.8.19. I take it any further requirements you may make… | ||
| Scan083 | Instruction sheet detailing amperage readings for different types of condensers at 225 volts. | ||
| View original record | R.R. 6 (500 T). (S.C. 182-7-2-17) T. X2612. ROLLS-ROYCE, LIMITED. INSTRUCTIONS. To Mr Clarke 5. 8. 1919. Order No. Customer's No. Condensers. b. Bosch } .0166 at 225 volts amp. e. B.T.H. } c. B.T.H. }… | ||
| Scan084 | Instruction sheet with calculations for electrical capacitance values. | ||
| View original record | R.R. 6 (500 T). (S.C. 182-7-2-17) T. ROLLS-ROYCE, LIMITED. INSTRUCTIONS. 191 To Order No. Customer's No. b + c = .0166 c + a = .0174 a + b = .0173 2 (a + b + c) = .0513 ∴ a + b + c = .02565 ∴ a =… | ||
| Scan085 | Test report for three condensers, including readings, calculations, and approval for fitting. | ||
| View original record | R.R. O.(500 T) /SF 550 9-4-19/ MP 284991 ROLLS-ROYCE LIMITED. INSTRUCTIONS To Mr Clark. 5/8/19 Order No. ____ Customer's No. ____ 225 volts every time | Condenser | Packing | Reading | diff | Cap. |… | ||
| Scan086 | Instruction note to Mr Clark detailing the successful testing and capacitance values of two condensers marked D & E. | ||
| View original record | R.R. C (500T) (SF 550 9-4-19) MP 284991 X.2572 ROLLS-ROYCE LIMITED. INSTRUCTIONS To Mr Clark Order No. Customer's No. 6/8/19 Two mas condensers have come through & passed all the tests satisfactorily.… | ||
| Scan087 | Advice note from The General Electric Co., Ltd. for a condenser sample. | ||
| View original record | X.2512 ADVICE NOTE. B A74945 M. essrs Rolls-Royce Lden. Nightingale Rd, Derby. 6/8/19. The General Electric Co., Ltd., 42, HIGH STREET, BIRMINGHAM [STAMP: RECEIVED] [STAMP: 7 AUG 1919] 2061 S113803 1… | ||
| Scan088 | Test report on a modified G.E.C. condenser which showed signs of failure under a 350-volt load. | ||
| View original record | RR o (500) (SF 550 9-4-19) MP 284991 X.2512 ROLLS-ROYCE LIMITED. INSTRUCTIONS 8/81 To Mr Clark. Order No. - Customer's No. - The sample G.E.C. Condenser 1st has been tested up to 350 volts. & tested… | ||
| Scan089 | Instruction sheet detailing an issue with plates not making good contact and a plan to test condensers. | ||
| View original record | R.R. 6 (500) / SF 550 9-4-19 / MP 284991 ROLLS-ROYCE LIMITED. INSTRUCTIONS II To 19 Order No. Customer's No. The platis were not making good contact; this may not have been happening however before… | ||
| Scan090 | Request for a report on a sample condenser required by the General Electric Co. before they can proceed with manufacture. | ||
| View original record | By Mr. Clark. Wd/Mal/E11.8.19. X.2572 SAMPLE CONDENSER. We wish to draw your attention to the fact that the General Electric Co. are awaiting your report on the sample Condenser before they can… | ||
| Scan091 | Letter from The General Electric Co Ltd regarding a sample condenser dispatched for testing. | ||
| View original record | X. 2512 CONTRACTORS TO H.M. ADMIRALTY, WAR OFFICE, INDIA OFFICE, G.P.O. AND THE LEADING HOME & FOREIGN RAILWAYS. Telegraphic Address: 'INSULATOR,' BIRMINGHAM. Telephone:(BIRMINGHAM) CENTRAL 6404(3… | ||
| Scan092 | The testing of a sample chassis ignition condenser from G.E.C. | ||
| View original record | R.H. 255 a (100 T) (S.F. 575. 16-6-19) G. 2354. To O.O. from EFC. c. to Bn. c. to By. EFC2/T12.8.19. X.2512 - CHASSIS IGNITION CONDENSER - G.E.C. SAMPLE. We have tested and examined the sample… | ||
| Scan093 | Typed letter to The British Mica Co. Ltd. arranging an interview with their Mr. Hill. | ||
| View original record | Copy for Mr. Clarke. X. 2512 X. 2495 Ref. Sd/Ms29/W.12.8.19. 12th. August, 1919. The British Mica Co. Ltd., Lebanon Road, Wandsworth, LONDON. S.W.18. Dear Sirs, Order C.W.107. We beg to acknowledge… | ||
| Scan094 | Request for the return of 5 tested condensers, as they are urgently needed for production. | ||
| View original record | X.2512. 12.8.19. EFC. With reference to the 5 condensers which you have for test and which are fitted in cases, will you kindly let me have these as soon as possible and a sheet to confirm they have… | ||
| Scan095 | Order for 1500 mica condenser plates to drawing N.786. | ||
| View original record | R.H. E&A 200 T (S.F. 673. 23-5-19) G. 2376. To O.O. from EFC. c. to Stores. EFC3/AT13.8.19. X.2512.--CONDENSERS. Will you kindly order up a further 1500 mica condenser plates to drawing N.786, as… | ||
| Scan096 | Confirming five condensers have passed testing and are suitable for production chassis. | ||
| View original record | X.2512. To Mr. Coverley. from EFC. c. to Wor. c. to Bn. EFC2/T13.8.19. X.2512.X.1627.X.1628. RE CONDENSERS We are handing back to you five condensers fitted in their cases. This is to confirm that… | ||
| Scan097 | Testing and specifications of two new condensers. | ||
| View original record | X.2512 13.8.19. X.1627. X.2512. Mr. Clark. We have had two new condensers in to-day; both have passed all tests required before going mxxixw into case. They are both only very little thicker than the… | ||
| Scan098 | Specification for condensers being made in the Experimental Department for production chassis. | ||
| View original record | To Ry. from EFC. X.2512. EFC4/T16.8.19. X.2512. RE CONDENSERS X.1827. Attached is a specification of the procedure in connection with the condensers which we are making up in the Experimental Dept.… | ||
| Scan099 | Confirmation memo regarding three condensers that have passed tests and are suitable for production chassis. | ||
| View original record | To Mr. Coverley from EFC. c. to Wor. c. to Bn. X. 2512. EFC3/T16.8.19. X.1628 [crossed out] X. 2512 - RE CONDENSERS X.1627 [crossed out] This is to confirm that we have passed back to you for… | ||
| Scan100 | The testing of two new condensers, noting their capacities and comparison to a G.E.C. model. | ||
| View original record | X.2512. 18.8.19. X.1627cr. X.2512. We have had two new condensers in to-day; both have passed all tests required before going into case. They are both only very little thicker than the G.E.C.… | ||
| Scan101 | The manufacture and capacity testing of several condensers. | ||
| View original record | H.R. 188A (100 T) (S.G. 648, 19-3-20) G. 2618 X.2512. 18.8.19. X.1627cr. X.2512. CONDENSERS. Two condensers have been made up, passed, and put in boxes since A, B C were done. These two have been… | ||
| Scan102 | Improvements in condenser construction, leading to a smaller condenser box design. | ||
| View original record | To Ry. from EFC. c. to Bn. c. to Da. c. to EH. X.8512.-RE CONDENSERS. Owing to improvements in the construction of condensers in the Experimental Dept., we are now able to build condensers of… | ||
| Scan103 | The modified assembly operations for building up condensers. | ||
| View original record | To EFC. from FHC. c. to EH. RHC3/LG18.8.19. X.2512.-RE CONDENSERS. We have modified the method of building up Condensers and we give below the operations that should be followed when assembling:- (1)… | ||
| Scan104 | The manufacture and modification of several condensers, detailing their capacities and dimensions. | ||
| View original record | X.2512. X.2512. X.1628. 20.8.19. CONDENSERS. ---------- Two condensers have been made up, passed, and put inboxes since A.B.C. were done. These two have been called D & E and the letters put in the… | ||
| Scan105 | Ignition system improvements for car 1 EX, including spring materials and magneto accessibility. | ||
| View original record | To EPC. from R. e. to CJ. e. to BN. e. to Da. e. to EH. X.2512 R1/G21.8.19. X.2565 RE IGNITION ON 1 EX. X.3129. X.2512. X.3630. X.2375. X.2762 With reference to the ignition on 1 EX this seemed to… | ||
| Scan106 | Delay in condenser supply from the General Electric Company and a proposal for an interim order. | ||
| View original record | To Bn. c. to EH. c. to Ms. COPY. BY4/P22. 8.19. RE CONDENSERS. X.Q.572 Owing to the General Electric Company submitting the wrong samples which departed from our design, and we on our part, insisting… | ||
| Scan107 | Log sheet for recording measurements and remarks for production condensers. | ||
| View original record | X 2572 X 1627 PRODUCTION CONDENSERS X 2572 22.8.19. Condenser number. of Milli-amperes/Capacity. (11.0 to 13.5) Current. REMARKS. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. | ||
| Scan108 | 5 thin type condensers handed to production with unmodified cases. | ||
| View original record | To EFC. from RHC. X2572 RHC2/LG23.8.19. 23rd. Aug. 1919. X3129 RE CONDENSERS. Will you kindly note that the 5 Condensers which have just been handed over to production are of the thin type and the… | ||
| Scan109 | Requesting an alteration to reduce the depth of the condenser casing for the make and break gear. | ||
| View original record | H.R. 535 To Mr Shelton from BY. c. Mr Ormerod. c. Mr Clarke. V2512 X8129 CHASSIS - BATTERY IGNITION. RE CASING FOR CONDENSER ON THE MAKE & BREAK GEAR. Mr Clarke informs me that we can reduce the depth… | ||
| Scan110 | List of new parts for the 40/50 chassis, detailing changes compared to the pre-war 40/50 HP chassis. | ||
| View original record | X. 2512. X. 3129. Extract from EHL/LG27.8.19. X. 2512. The following is a list of new parts which have been fitted to the 40/50 chassis, which we are now making compared with 40/50 HP. chassis we made… | ||
| Scan111 | Procedure detailing the testing process for production condensers. | ||
| View original record | X.2512. PRODUCTION CONDENSER PROCEDURE (1) Before encasing a condenser it shall be tested by applying to its terminals an alternating voltage of about 400, for a period of 10 minutes, through a light… | ||
| Scan112 | Distributing two copies of the revised and final specification for Production Condenser Tests. | ||
| View original record | To By. from EFC. b. to Bn. c. to Wor. X.2512. EFC1/AT30.8.19. X.2512.-RE TESTING OF PRODUCTION CONDENSERS. X.1627. Herewith please receive two copies of our revised specification of Production… | ||
| Scan113 | Confirming receipt of 4 condensers and requesting the chassis details they are for. | ||
| View original record | To Mr. Scott from RHC. c. to EFC. X.2512 RHC1/LG1.9.19. 1st. Sept. 1919. Herewith please receive 4 Condensers complete in cases. Will you kindly let me know what chassis these are fitted to. RHC.… | ||
| Scan114 | Change of varnish for condensers and the creation of new fixtures to improve production. | ||
| View original record | To Wcr. from RHC. c. to EFC. RHC3/LG2.9.19. 2nd. Sept. 1919. X.2512 RE CONDENSERS. With reference to the Condenser job, we have now gone back to the "Stickoline" varnish in place of the Armacell. We… | ||
| Scan115 | The status of production testing for various electrical components. | ||
| View original record | R.R. 199 (250T) (S10496) (9-7-17) MP14866 X.2512. BY25/P30.9.19. Br. From BY. C. SPF. c. EFC. X1627 X3129 X 2512 RE PRODUCTION TESTING OF ELECTRICAL EQUIPMENT. X.3445 Referring to your memo… | ||
| Scan116 | Test results and calculations for auxiliary and chassis condensers. | ||
| View original record | X.2512 - RE CONDENSERS. (1) The three auxiliary condensers on resonance together give a reading of 3.5 on Lucas volt meter. (2) The same on 350 volts from transformer together give a reading of 3.8.… | ||
| Scan117 | Handing over condenser testing apparatus and raising concerns about potential production issues from acid vapours. | ||
| View original record | To Ey. from EFC. c. to Bn. c. to Wor. EFC3/T8.10.19. X.2512 - MANUFACTURE AND PRODUCTION TESTING OF CONDENSERS FOR BATTERY IGNITION. W-e are now satisfied that we have the right testing apparatus for… | ||
| Scan118 | Recommendation to move condenser manufacturing to a more suitable place due to dust contamination. | ||
| View original record | Contd. -3- EFC3/T8.10.19. which are in use not to mention carbon dust from the motor brushes and pieces of dust falling from the ceiling owing to disturbances overhead. We consider that serious steps… | ||
| Scan119 | From EFC to Mr. Coverley requesting the remaking of condenser R.R.12 and another similar condenser. | ||
| View original record | To Mr. Coverley. from EFC. EFC1/T9.10.19. X.2512 - RE CONDENSER Will you kindly have remade the condenser R.R.12 with the suitable attachments for fixing to the ignition for bench test. This… | ||
| Scan120 | Outlining eight required conditions for a dedicated condenser manufacturing room. | ||
| View original record | R.R. 235A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Hy. from BY. c. WOT. c. EFC. c. BPT. BY2/P11.10.19.. X-2512 RE MANUFACTURE OF CONDENSERS. -------------------------------------- The room in use… | ||
| Scan121 | Procedure for testing condensers before use on a chassis. | ||
| View original record | Mr Brock Mr Wilson (strikethrough) Gresham Rd, Wks. c.c. BFT. c.c. Ck. EY3/P11.10.19. X 2512 RE TESTING CONDENSERS. ------------------------- I attach herewith copy of procedure to be followed by Mr… | ||
| Scan122 | Requesting a condenser spring, previously made of steel, now be made in bronze to prevent rust. | ||
| View original record | To EFC. from E. Copy to CJ. " " BN. " " EH. " " DA. X.2512. E4/G16.10.19. RE CONDENSER. X.2631. X.2512. It is noticed that the condenser spring on 49-GB is made in steel, and has become rusty. Kindly… | ||
| Scan123 | Confirming the condenser contact spring material has been changed to Silicon Bronze as standard. | ||
| View original record | To E. from EFC. c. to CJ. X.2512. EFC2/T20.10.19. X.3129. X.2512. - RE CONDENSER CONTACT SPRINGS. In answer to your E4/G16.10.19. the condenser contact spring in Silicon Bronze has now been made… | ||
| Scan124 | Confirming that silicon bronze springs are now standard on all experimental cars. | ||
| View original record | X.2512. To EFC. from RHC. RHC5/LG21.10.19. X.3129. X.2522. SILICON BRONZE SPRINGS. This has been carried out on all experimental Cars and is now standard. RHC. | ||
| Scan125 | Accompanying a second sample condenser from the General Electric Co. for evaluation. | ||
| View original record | R.R. 235 a 200 T (S.F. 673. 22-5-19) G. 2376 BY/JH8/H. 25. 10. 19. EFC. Condensers RE CONDENSERS. X.2512. Please receive herewith one sample (2nd) condenser supplied by the General Electric Co. Will… | ||
| Scan126 | Alternative condenser design for battery ignition proposed by the General Electric Company. | ||
| View original record | N.R. 235 a 200 T (S.F. 673. 25-5-19) G. 2576 Ck. from BY. X.25/2 BY6/P27.10.19. CHASSIS - BATTERY IGNITION. RE CONDENSER OF TYPE ORIGINALLY PROPOSED BY GENERAL ELECTRIC COMPANY WITH MELTED TIN… | ||
| Scan127 | Instruction sheet detailing the examination of a 2nd sample G.E.C. Condenser that broke down on 220 AC Volts. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. X 2572 A To: Mr Clark. Date: 27/10/19 Order No: — Customer's No.: — 2nd Sample G.E.C. Condenser. (Leaf connection) This condenser broke down on 220 AC Volts. On… | ||
| Scan128 | Test results for a 3rd sample G.S.C. Condenser with soldered connections. | ||
| View original record | R.R. 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.2512. B ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark. Order No. — Customer's No. — 3rd Sample G.S.C. Condenser (with Soldered Connections) This… | ||
| Scan129 | Instructions sheet detailing the test results and required modifications for a sample G.E.C. condenser. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.2512 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark. Order No. -- Customer's No. -- 4th Sample G.E.C. Condenser (Soldered) This condenser was handed… | ||
| Scan130 | Production procedure outlining the testing process for condensers. | ||
| View original record | X.3445. 6.11.19. X.2512. X.1627. PRODUCTION CONDENSER PROCEDURE. (1) Before encasing a condenser it shall be tested by applying to its terminals an alternating voltage of about 400, for a period of 10… | ||
| Scan131 | Testing of sample condensers from G.E.CO. to investigate a breakdown issue related to screws. | ||
| View original record | CK. from BY. BY14/P11.11.19. X 2512 RE CONDENSERS FROM THE G.E.CO. ------- (5th) I am sending you herewith a further sample condenser from the above company. I also attach copy of their letter of the… | ||
| Scan132 | Correspondence from Salford Electrical Instruments regarding the testing and quality issues of a returned condenser. | ||
| View original record | R. 35A (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. Copy The Salford Electrical Instruments, Ltd. Meter Works, North George Street, Salford. 8th November, 1919. Messrs Rolls Royce. Ltd, Nightingale… | ||
| Scan133 | Forwarding a copy of a letter from The Salford Electrical Instruments Ltd. regarding a condenser. | ||
| View original record | c.By/Mr. Clark. X. 2512 Wd/Ms34/E10.11.19. CONDENSER. -------- We attach herewith a copy of a letter we have received from The Salford Electrical Instruments Ltd. dated 8th. November Immediately the… | ||
| Scan134 | Letter from a supplier regarding the testing and performance of a returned condenser. | ||
| View original record | Copy of letter received from The Salford Electrical Instruments Ltd., Meter Works, North George Street, Salford. 8TH November 1919. Messrs Rolls Royce Ltd., Nightingale Road, DERBY. Dear Sirs, With… | ||
| Scan135 | Testing procedure for condensers from G.E. Co., highlighting that failures occur when tested with fixing screws. | ||
| View original record | 235a (500 T) (S.D. 408. 20-1-14.) Bm. 2/156/13. O.R. O.O. from BY. BY9/P11.11.19. X.2512 RE CONDENSERS FROM THE G.E. Co. Referring to your memo WD/Ms34/E101119 and above Company's letter of the 8th… | ||
| Scan136 | Continued memo regarding an order for condensers and the testing of a new sample. | ||
| View original record | 235a (500 T) (S.D. 408. 26-4-17.) Bm. 2/156/13. BY9/P11.11.19. contd. - 2 - I am certainly of the opinion that we had better put a really good order of condensers through in our own works, as these… | ||
| Scan137 | Instruction sheet detailing the testing results and further actions for a sample G.E.C. condenser. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark Date: 18/11/19 Sample G.E.C. Condenser. The last "leaf" condenser sent to us for test by the G.E.C. has stood up to all our tests it has a capacity of… | ||
| Scan138 | Table logging the testing and specifications of G.E.C. sample condensers. | ||
| View original record | X.2512 19.11.19. X.2512 - TABLE OF G.E.C. SAMPLE CONDENSERS No. of condenser. | Date received. | Leaf or soldered connec: | Bolt holes. | Capacity. | Thickness. | Capacity per inch. | Remarks.… | ||
| Scan139 | Testing sample condensers from G.E.C. and the rejection criteria based on a 'tickling' noise under high voltage. | ||
| View original record | To Ry. from EFC. c. to O.C. EFC3/T20.11.19. X.2512 - SAMPLE CONDENSERS RECEIVED FROM G.E.C. -- We attach a copy of a table of those sample condensers received from the G.E.C. which we have tested.… | ||
| Scan140 | Condenser manufacturing issues, specifically the drilling of bolt holes and suggestions for reducing scrap. | ||
| View original record | Contd. -2- EFC3/T20.11.19. Regarding condensers Nos. 4 & 5, No.4 of which was received with no bolt holes, but drilled by us, and No.5 of which was received with bolt holes, both these condensers… | ||
| Scan141 | Modifications to jig plates for condensers and the return of specific units for verification. | ||
| View original record | Contd. -3- EFC3/T20.11.19 thickness of condenser than is allowed for in the case, it would appear that we might gain some advantage in this direction. Perhaps you would kindly give instructions for a… | ||
| Scan142 | Table logging test results for G.E.C. sample condensers. | ||
| View original record | X.2572 TABLE OF G.E.C. SAMPLE CONDENSERS 19.11.19. No. of condenser. | Date Received. | Leaf or Solder-ed.conn: | Bolt holes. | Capacity. | Thickness. | Capacity per inch. | Remarks. 1 | 6.8.19 | S |… | ||
| Scan143 | Failure of a second sample condenser from the Salford Electrical Company and proposing a meeting to resolve the issue. | ||
| View original record | H.H. 235a (500 T) (S.D. 408. 26-4-17.) Rm. 2/156/13. from BY. c. CK. c. Mr Booth. BY1/P 24.11.19. RE CONDENSERS. X.2512 I am returning herewith the second sample condenser submitted to us by the… | ||
| Scan144 | Instructions sheet detailing the test results and noise comparison of a sample G.E.C. condenser. | ||
| View original record | RR. 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X.2512 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: H. Clark Customer's No. - Order No. - Sample of G.E.C. Condenser. (NO 6.) Leaf connection This Condenser… | ||
| Scan145 | Report on a G.E.C. sample condenser, its noise characteristics, and arranging for a road test. | ||
| View original record | X.2512 To EY. from EFC. c. to Mr. Mills. c. to Mr. Brock. EFC1/T25.11.19. X. 2512 - RE G.E.C. CONDENSERS We attach copy of a report on No.6 sample condenser received from the G.E.C. yesterday. The… | ||
| Scan146 | Requesting the return of a 12-volt chassis coil and enquiring about a special condenser for West Wittering. | ||
| View original record | To EFC. from E. X 2512 E1/G25.11.19. X.2048. X.2512. X.3362. X.3129. -------------------- RE CONDENSER FOR WEST WITTERING. -------------------- We have already requested, as you will remember, that… | ||
| Scan147 | Discrepancy in condenser thickness and the need to establish a manufacturing limit with G.E.C. | ||
| View original record | RY. from E.J.B. c. to EFC. c. to Ms. EJB.1/LMG. 26. 11. 1919. X.25/2 I have received a copy of the report from Mr.Clark re the G.E.C. Condenser No.6. I notice the thickness of this Condenser is .450.… | ||
| Scan148 | Instructing the Works to supply one standard Condensor for project X.2048. | ||
| View original record | X.2512 BY/JH5/H. 28.11.19. Mr. Brock c. EFC. X.2512 CONDENSOR. X.2048 Will you please instruct the Works to supply to EFC. one standard Condensor complete with clamping plates, and bolts, but not… | ||
| Scan149 | Sending of a chassis condenser with clamping plates to Mr. Royce. | ||
| View original record | EFC. from BY. X 2572 BY8/P1.12.19. X. 2512. X. 2048. CHASSIS - CONDENSERS. Herewith please receive one Condenser with clamping plates complete, as asked for by yourself with the object of sending it… | ||
| Scan150 | Requesting the despatch of a battery ignition condenser to Mr. Royce for experimental purposes. | ||
| View original record | To Shipping Office. c. to Despatch Stores. c. to O.O. EFC5/T2.12.19. X.2512. - RE CONDENSER FOR BATTERY IGNITION We are sending into the Stores, one battery ignition condenser complete with clamping… | ||
| Scan151 | Instructing the shipping office to despatch an experimental condenser to Mr. Royce. | ||
| View original record | To Shipping Office. from EFC. c. to Despatch Stores. EFC7/T2.12.19. X.2512 - EXPERIMENTAL CONDENSER. We are sending into the Stores an experimental condenser. We require this to be despatched to Mr.… | ||
| Scan152 | The production testing and specifications of a condenser for battery ignition. | ||
| View original record | W.R. 336 s.(100 T) (S.Y. 816 6-8-19) G 2469 To R. from EFC. c. to W. c. to E. EFC4/T2.12.19. X.2512 - CONDENSER FOR BATTERY IGNITION As requested, we are sending to you a condenser complete with… | ||
| Scan153 | Confirming a sample G.E.C. condenser has been supplied for testing on an experimental car. | ||
| View original record | W.W. 5M x 20(T) (S.F. 674. 22-5-19) G. 2876. X.2572 To Mr. Coverley. from EFC. EFC2/T4.12.19. X.2572 RE SAMPLE G.E.C. CONDENSER FOR EXPERIMENTAL CAR This is to confirm that we have hadded to you… | ||
| Scan154 | Instruction to fit a sample G.E.C. Condenser (No 6) to vehicle 49 GPB. | ||
| View original record | RR. 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X. 2512 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark Date: 5/12/19 Order No. - Customer's No. - Sample G.E.C. Condenser (No 6) This Condenser has now… | ||
| Scan155 | Confirming the fitting of a G.E.C. Co. condenser and fibre wiring tube to 49-GB. | ||
| View original record | X.2572 To EFC. from RHC. RHC1/LG10.12.19. X.2572 . X.3714 Will you kindly note that we have fitted to 49-GB a Condenser supply by the G.E.C. Co., also we have fitted Fibre wiring tube for carrying the… | ||
| Scan156 | Experimental parts fitted to specific chassis and a repaired condenser. | ||
| View original record | To EFC. from HHC. X 2512 HHC2/LG10.12.19. ----------------------- X.3647. - RE EXPERIMENTAL PARTS. --------------------------------- Will you kindly note that the following parts have been fitted to… | ||
| Scan157 | Instruction note regarding the capacity of a rebuilt R.R. 12 condenser and the manufacturing of a new one. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark. Order No. Customer's No. X. 2512 Condenser R.R. 12 has been re-built & tested, & now has a Capacity of .465 m.f. The other one is being made much… | ||
| Scan158 | Instructions regarding the modification of a condenser by splitting it in half. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: Mr Clark Date: 11/12/19 Order No: - Customer's No: X. 2512 Condenser RR II This condenser had a capacity of .46 mF. So it has been split in half each half now… | ||
| Scan159 | Internal instruction memo regarding the receipt and testing of two condensers. | ||
| View original record | RR.238 (300 Bks.) (SP 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. X.2512 To: Mr Clark Customer's No. X.2512 Condensers We have received from Mr Coventry the two condensers which he has… | ||
| Scan160 | To Mr. Clark detailing four types of condensers with special fittings for experimental purposes. | ||
| View original record | X 2512 1.1.20. Mr. Clark. ----------- X.2512 - CONDENSERS --------------------- We now have four condensers with special terminal fittings for Expl. purposes. (1) R.R.10 (off ignition) cap..17 depth… | ||
| Scan161 | The production testing of condensers, specifically regarding the number of alternations of the alternating current. | ||
| View original record | R.R. 235a (607) (S.G. 756, 24-5-20) G. 2650 X. 2512. EFC. By/3/H27.1.20. X.1627. PRODUCTION TESTING OF CONDENSERS X.252 Referring to your sheet on the above, sent to me under cover of EFc1/AT30.8.19,… | ||
| Scan162 | Alternating current frequency for production testing of condensers. | ||
| View original record | X. 2512. To By. from Ck. Ck1/T28.1.20. X.1627 ? PRODUCTION TESTING OF CONDENSERS X. 2512. In answer to your note By3/H27.1.20, you are quite correct in stating that we should define the frequency of… | ||
| Scan163 | Forwarding a letter from S.E.I.Co. regarding condenser tests, packing, and thickness. | ||
| View original record | X.2512. Ck. from BY. C/- Mr Brock [Struck through] BY12-P13.2.20. X.2512. RE CONDENSERS. I am sending to Ck, copy of the S.E.I.Co, letter of the 12th inst., reference HCT/EAC, and two condensers,… | ||
| Scan164 | Letter from Salford Electrical Instruments Ltd. regarding a condenser order, noting discrepancies and suggesting solutions. | ||
| View original record | R.R. 250 10M 7/18(P) 576. 10-3-19(C) C1 9224 COPY. Your Ref, WD/WP16.HP 261 20. Our Ref. HCT/EAC. 12th February. 1920. Messrs. Rolls Royce Ltd., Nightingale Road, DERBY. Dear Sirs., With reference to… | ||
| Scan165 | Requesting the urgent testing of 12 condensers received from the Salford Electrical Co. | ||
| View original record | R.R. 233 a (50 T) (S F. 346. 6-8-19) G. 2461. X.2572 Mr Brook from BY. c. Ck. BY4-P19. 2. 20. X.2512 Condensers. I am sending you herewith a box containing 12 condensers, as received from the Salford… | ||
| Scan166 | The mechanical issues and poor quality of Salford Electrical Condensers and their fittings. | ||
| View original record | X 2572 BY. from E.J.B. c. to Mr.Clarke. c. to Sft. EJB.1/LMG. 20. 2. 20. X 2572 Re Salford Electrical Condensers. I understand Mr.Clarke has already sent you a report on the electrical test of these… | ||
| Scan167 | Electrical examination and testing results for a dozen condensers supplied by the Salford Electrical Co. | ||
| View original record | R R 25A a 100 T To Bysm from Ck. c. to Mr. Brock. c.c. C.O. X.2512 Ck1/T20.2.20. X.2512 - CONDENSERS We have electrically examined and tested the dozen condensers supplied to us by the Salford… | ||
| Scan168 | The electrical and noise testing of various condensers. | ||
| View original record | Contd. -2- Ck1/T20.2.20. switching on and off this voltage, and they also showed themselves capable of holding a static charge. These four condensers would therefore pass our electrical tests. The… | ||
| Scan169 | Dispute with Salford Electrical Instruments Ltd. over the testing procedure for chassis condensers. | ||
| View original record | X.2512. BY7/H. 23. 2. 20. Mr.Clarke. G MS X.2512. CHASSIS CONDENSERS. I am attaching herewith copy of letter received from the Salford Electrical Instruments. Ltd. dated the 21st inst, reference… | ||
| Scan170 | Letter from Salford Electrical Instruments Ltd. regarding a dispute over condenser testing specifications. | ||
| View original record | C O P Y Salford Electrical Instruments, Ltd. Tele.2205 Central. Meter Works, "SPARKLESS" SALFORD. North George Street, Salford. WD/Msl2/FJ.20. HCT/EAC. 21st February, 1920. Messrs Rolls Royce Ltd.… | ||
| Scan171 | Letter from Salford Electrical Instruments Ltd. concerning discrepancies between submitted samples and drawings for metal parts. | ||
| View original record | - 2 - As regards your Metal Fitters report, we find a great variation between your drawings and the samples which you submitted, and we do not believe that metal parts made up to your drawings could… | ||
| Scan172 | Modifying the production testing procedure for condensers. | ||
| View original record | X.2572 Mr. Brock from By. c. to CK. By11/P27.2.20. X.1627. RE PRODUCTION TESTING OF CONDENSERS. X.2512. Referring to the fact that we have been flashing Condensers by switching on and off when on the… | ||
| Scan173 | Multi-step testing and verification procedure for production condensers before they are encased. | ||
| View original record | Handwritten top: X 2512 attached 5 Reyn/P 24.2.20 Copy. 29.9.19. X.2512. X.1527. PRODUCTION CONDENSER PROCEDURE. --------------------------- (1) Before encasing a condenser it shall be tested by… | ||
| Scan174 | Developing scheme for the production testing of condensers. | ||
| View original record | X.25712 To By. from Ck. c. Mr. Brock. Ck2/T28.2.20. X.1627 - PRODUCTION TESTING OF CONDENSERS X.2572 Re your By11/P27.2.20, we are hoping to develope a scheme by which the voltage on the condensers… | ||
| Scan175 | Cover note attaching a letter from Salford Electrical Instruments Ltd. concerning complaints about condensers. | ||
| View original record | BY c.Ck. X.2572 Wd/Ms18/FJL.1.3.20. Re - Condensers. I attach herewith copy of a letter we have received from the Salford Electrical Instruments Ltd., reviewing the complaints with reference to which… | ||
| Scan176 | Copy of a letter from Salford Electrical Instruments Ltd. regarding condensers and magnetos. | ||
| View original record | Attached to Wd/me/8/7/ 13.3.20 Copy of letter received from:- SALFORD ELECTRICAL INSTRUMENTS LTD., METER WORKS, NORTH GEORGE STREET, SALFORD. Your Ref.-Wd/Msl2/FJ20.2.20. Our Ref.-HCT/EAC. 26th… | ||
| Scan177 | Production test procedure for condensers used in battery ignition systems. | ||
| View original record | X.2512. 2.3.20. X.1627. PRODUCTION TEST OF CONDENSERS FOR X.2512. BATTERY IGNITION. (1) Before encasing a condenser it shouldbe tested by applying to its terminals an alternating voltage of 450… | ||
| Scan178 | Continued page of testing procedures for a condenser. | ||
| View original record | Contd. -2- 2320. (2) If the condenser stands Test 1 it shall be tested for capacity by being placed in series with an A.C. milliammeter reading up to 30 milliamperes across an alternating voltage of… | ||
| Scan179 | General description of apparatus and modified instructions for the production testing of condensers or battery ignition. | ||
| View original record | X 2512 To Ry. from Ck. c. to Hy. c. to Mr. Brock. c. to Mr. Humpstone for U.S.A. Ck2/T2.3.20. X.1827 - APPARATUS & CONNECTIONS FOR PRODUCTION TESTING OF CONDENSERS OR BATTERY IGNITION. X.2512. We… | ||
| Scan180 | Continued report on apparatus for condenser testing, discussing voltage regulation and magnetic components. | ||
| View original record | Contd. -2- CK2/T2.3.20. happens to be about right, as it establishes the correct voltages on the transformer terminals and gives just the 450 volts required for the condenser testing. On allowing a… | ||
| Scan181 | The apparatus and connections for production testing of condensers for battery ignition. | ||
| View original record | A. M. (100 T) (S.F 846 6-8-19 G. 2486) EFC/T2.3.20. X.1627 - APPARATUS & CONNECTIONS FOR PRODUCTION TESTING OF CONDENSERS FOR BATTERY IGNITION. X. 2512. In order to limit oscillatory disturbances in… | ||
| Scan182 | Continued description of an electrical apparatus involving lamps, fuses, and a condenser. | ||
| View original record | Contd. -2- EFC/T2.3.20. voltage and that of the mains being the allowance for the drop in the variable reactance when the keeper is removed. B is a bank of four 210 volt, 16 c.p. carbon filament… | ||
| Scan183 | Wiring diagram for an apparatus used in the production testing of condensers with variable voltage. | ||
| View original record | DIAGRAM OF APPARATUS FOR PRODUCTION TESTING OF CONDENSERS INCORPORATING VARIABLE CONDENSER VOLTAGE AT 110 220 350 400 450 T S R B C D E.7.C 2/3/38 RR LTD 1381 2/36 Folio D 250 | ||
| Scan184 | The testing and failure analysis of chassis condensers. | ||
| View original record | X.2672 BY3/H. 3. 3. 20. ------------------- C. Ck. ----- X.2672. CHASSIS - CONDENSERS. -------------------------- With reference to Mr.Turner of the B.E.C's visit to our Works, I regret that up to the… | ||
| Scan185 | Unsatisfactory condensers, addressing issues with stud screw size, thickness, and a request for scrap mica. | ||
| View original record | - 2 - far as capacity was concerned, but these four condensers, in common with all the rest supplied, were unsatisfactory in regard to one or two minor details, as follows:- (a). The boss into which… | ||
| Scan186 | Stud F.7374 and faulty condensers, detailing a new testing procedure and return instructions. | ||
| View original record | - 3 - Stud F.7374. This stud, I am informed by our Condenser Dept, is quite satisfactory as shown on the detail drawing, and needs no correction. Dealing now with the condensers which broke down under… | ||
| Scan187 | Extract from Mr. Maddock's report on the cause of badly pitted platinum points in a battery ignition system. | ||
| View original record | X.2572 Extract from Mr. Maddock's rpt. 17.3.20. X.186 X.2/29 X.3647. Today I have found out why the platinum points of the battery ignition have pitted so badly. The two screws which hold the… | ||
| Scan188 | Causes of ignition failure due to faulty condensers. | ||
| View original record | BY. c. to Dft. c. to CK. X 2572 A.T. EP1/F14.4.20. X 2572 RE. FAILURE OF IGNITION DUE TO FAULTY CONDENSERS. X-3129 We have recently had one or two cases of ignition failure due to faulty condenser… | ||
| Scan189 | To Mr. Clarke about a shipment of 106 Condensers from Salford Electrical Inst. Co Ltd. potentially held up by inspection. | ||
| View original record | H.H. 226 a (100 T) (S.G. 504. 8-1-20) G. 2535 X.2512 BY- C. to Mr. Clarke. X.2512. Wd/AW2/W19320. 19th Mar.1920. We send you herewith a copy of a letter received from Messrs. The Salford Electrical… | ||
| Scan190 | Copy of a letter from The Salford Electrical Inst. Co Ltd. regarding a shipment of 106 condensers with a slight thickness variation. | ||
| View original record | R.R. 199 (150T) (SD576 19-7-17) MP180M/5 X.2512 COPY OF A LETTER RECEIVED FROM:- The Salford Electrical Inst. Co Ltd., North George Street, SALFORD. EH/EAC. 17th March. 1920. Messrs. Rolls-Royce Ltd.,… | ||
| Scan191 | Battery ignition trouble on a 2.EX car after a 10,000-mile run, caused by a faulty condenser connection. | ||
| View original record | R.R. 25b 20(T) (S.F. 674. 25-5-19) G. 2876. X.2572 Extract from Hs6/LG20.4.20. X.3647a. ELECTRICAL PARTS RUN 10,000 MILES. X.3743. ON 2.EX CAR. X.3129.3. X.2512. X.2894. X.136. Battery Ignition.… | ||
| Scan192 | Extract from a 10,000-mile test report on electrical parts, focusing on battery ignition issues. | ||
| View original record | H H 235 a (200 T) (S F 674 22-5-19) G. 2376. X. 2572 Extract from EFC1/T21.4.20. X.3647. - 10,000 MILE TEST OF ELECTRICAL PARTS ON 2.EX. X.3743. X.3129. (3) Battery Ignition. The Tungsten or Platinum… | ||
| Scan193 | Feedback on the performance of electrical parts on chassis 49-GB. | ||
| View original record | x 2572 2 To Hs. from EFC. EFC8/T27.4.20. X.3762 - ELECTRICAL PARTS ON 49-GB. Will you kindly let me know of your recent experience with the electrical parts on chassis 49-GB :- (1) X.2512. Ignition… | ||
| Scan194 | Issues with faulty battery ignition and condenser connection troubles. | ||
| View original record | By. from EP. c. to Sft. c. to Mr. Brock. c. to EFC. X.2512 EP2/F226.20. X.3129. RE FAULTY BATTERY IGNITION AND CONDENSER TROUBLES X.2512. We are still having trouble with failure of battery ignition,… | ||
| Scan195 | Ongoing issues with loose nuts on later type condensers and the need for retrospective modifications. | ||
| View original record | Contd. -2- EP2/F22.6.20. We understand from Mr. Watkins that improvements have been fitted on the later type condensers, and I wish to make itmquite clear that we are still having trouble with the… | ||
| Scan196 | Faulty battery ignition due to an imperfect condenser connection. | ||
| View original record | X 2872 To By. from EFC. EFC3/T23.6.20. X.3129 - RE FAULTY BATTERY IGNITION DUE TO IMPERFECT CONDENSER CONNECTION. X.2512. Referring to EP's note EP2/F22.6.20, is this a matter in which any further… | ||
| Scan197 | Faulty battery ignition and condenser troubles due to incorrect machining. | ||
| View original record | x2512 EP. from By. c. to Sft. c. to Mr. Brock. c. to EFC. ByZ/P26.6.20. X.3129. RE FAULTY BATTERY IGNITION & CONDENSER TROUBLES. X.2512. Referring to your memo EP2/F22.6.20, re the above, I had had a… | ||
| Scan198 | Reliability improvements of chassis condensers, comparing die-cast and sand-cast casings. | ||
| View original record | X.2572. E C JUN 28 RECEIVED from BY. c. EFC. BY9-P28.6.20. X.2512 CHASSIS - CONDENSERS. ------------------- Referring to your memo EP2/F22620 I consider that condensers as now being produced are more… | ||
| Scan199 | Calculation of capacity of condenser. | ||
| View original record | X.2512 10.11.30. X.2512. CALCULATION OF CAPACITY OF CONDENSER. Let capacity reactance be w ohms = volts / amps. = 1 / pk (dimensions LT^-1) So that K = 1 / pw farads. = 10^6 / pw mf. p = 2π f = 262… | ||
| Scan200 | Table listing condenser milli-amperes and capacities. | ||
| View original record | X.2512. 10.11.20. X.2512. CONDENSER MILLI-AMPERES AND CAPACITIES. Condenser. Milli-amperes at 205 volts and 50.7~ Capacity (mf). S.R.R.1 14.4 .220 S.R.R.2 15.6 .239 R.R.10 11.9 .182 R.R.11a. 14.9 .228… | ||
| Scan201 | Complaints regarding the condenser cover and proposing design changes to prevent bolts from chafing plates. | ||
| View original record | X 2572. To Ds. from EFC. c. Da/Thr. c. By. c. EP. EFC1/T22.11.20. X. 2512 - CONDENSER COVER. X 4286 We have received complaints from the Test Dept. that it sometimes happens in taking off and… | ||
| Scan202 | Letter concerning the supply of tungsten contacts for testing and issues with pitting on platinum contacts. | ||
| View original record | X.2512 Oy2/G9.12.20. Dec. 9th, 1920. Mr. Claude Johnson, Managing Director. Rolls-Royce Ltd. London, England. Attention Mr. Clark. Dear Sir:- X.2894. X.2512. X.2430 RE TUNGSTEN CONTACTS. X 2512 X.3129… | ||
| Scan203 | Continued memo suggesting experimentation with enclosed contacts for a Mr. Clark. | ||
| View original record | Contd. -2- Oy2/G -Dec. 9th 1920. In any case, I think that Mr. Clark would be interested in experimenting with the enclosed contacts. Yours truly, MO/G. ROLLS ROYCE OF AMERICA INC. CC Mr. Hulley.… | ||
| Scan204 | Use of Bakelite impregnation for various electrical components like coils, armatures, generators, and condensers. | ||
| View original record | X 2572 W/G21.12.20. Extract from XIII G4 -2- Contd. MR. C. JOHNSON. X.3966. X.3876. Bakelite Impregnation of coils. X.753. X.3343. X.3331. X.543. The Westinghouse motor armatures are varnished with… | ||
| Scan205 | Technical discussion comparing Mica and Bakelite for condensers and commutators, and notes on electrical connections. | ||
| View original record | Contd. -3- (Mica is still used for magneto condensers, however, because of its higher dielectric strength.) Ignition condensers are often assembled in pressed metal containers which are afterwards… | ||
| Scan206 | Proposal to modify the condenser studs and nuts on the 40/50 chassis to prevent mica damage and improve the earth connection. | ||
| View original record | H.H. 288A (100 T) (H.H 798 10-12-20) G. 2947 X.2512 To By. from Da. c. to Hs. (1 print). c. to TB. (1 print). c. to RHC.(1 print). c. to EFC. DaS/CB4.2.21. X.4286 (crossed out: X12512.) RE CONDENSER -… | ||
| Scan207 | Letter from Dubilier Condenser Co. Ltd. regarding an abnormal number of condenser failures. | ||
| View original record | W.M. 3054-10M (T) (S.H. 7th, 10-15-20) G. 1947 X 25/2 DUBILIER. CONDENSER. CO. LTD. Ducon Works, Goldhawk Road. Shepherds Bush, W.12 7th February, 1921. Messrs. Rolls-Royce Ltd., Nightingale Road,… | ||
| Scan208 | Revised production test for battery ignition condensers due to failures and changes to the testing system. | ||
| View original record | To Ry. from EFC. c. to Mr. Brock. c. to Mr.Brock for Mr. Watson. X.2572 EFCL/19.2.21. X.1627 - PRODUCTION TESTING OF CONDENSERS. X2572 We attach revised copy of the production test for the battery… | ||
| Scan209 | Production test procedure for a condenser used in a battery ignition system. | ||
| View original record | X.1627 - PRODUCTION TEST OF CONDENSER FOR BATTERY IGNITION. X.2512. (1) Before encasing a condenser it shall be tested by applying to its terminals an alternating voltage of 400 (r.m.s) for a period… | ||
| Scan210 | Test procedure for a condenser, specifying limits for capacity current and static charge capability. | ||
| View original record | x 2572 -2- 9.2.21. Contd. of 205 at a frequency of 50.7 when the milliamperes of capacity current taken by the condenser shall lie between the limits 12.5 and 16.0. (3) If satisfactory as regards (1)… | ||
| Scan211 | Postponing the testing of condensers from the Dubilier Condenser Company until their representative can visit. | ||
| View original record | X 2512 To By. from EFC. c. to Mr. Brock. c. to Mr. Wallace (O.O.) EFC1/T10.2.21. X.2512 - CONDENSERS. We understand we yesterday received a further batch of condensers from the Dubilier Condenser… | ||
| Scan212 | Arranging a visit from a supplier to investigate condenser breakdowns. | ||
| View original record | S. H. 15a (100 T) (S.H. 798. 10-12-20) G. 2948 X. 2572 EFC. from Wd. c. to By. c. to Wor/Mr Brock. c. to OO/CHB. RECEIVED STAMP: EFC FEB 12 1921 Wd7/NJ12.2.21. X. 2512. Condensers. Mr. Goodman,… | ||
| Scan213 | Condenser testing procedures and failure rates with a Mr. Goodman. | ||
| View original record | X 2512 To Wd. from EFC. c. to Ey. c. to Wor/Mr. Brock. c. CG/GHB. EFC1/T15.2.21. X.2512 - CONDENSERS. We saw Mr. Goodman yesterday and went into the question of our condenser tests. We first of all… | ||
| Scan214 | The modification of voltage tests for condensers, referencing the Dubilier Company. | ||
| View original record | Contd. -2- EFC1/T15.2.21. Mr. Goodman stated yesterday that he did not object to this feature of flashing on the voltage and he as good as said that Mr. Turner's objection could not carry any weight.… | ||
| Scan215 | Increase in failures of 'Dubilier' brand condensers for the chassis battery ignition system. | ||
| View original record | STAMPS & HANDWRITING: RECEIVED FC 18 by From WP c. to c. to EFC. V.2512 AT A.T. TYPED DOCUMENT: EP2/F17.2.21. X.2512 CHASSIS - BATTERY IGNITION - FAULTY CONDENSERS. With reference to our conversation… | ||
| Scan216 | Capacity of condensers supplied from an outside source. | ||
| View original record | X.2512. 21.2.21. EFC. X.2512. CONDENSERS. The capacity of the above supplied from outside hardly come within your revised limits viz. 12.5 to 15.0 M.A. Will you kindly let me know something about this… | ||
| Scan217 | High failure rate of condensers for battery ignition systems supplied by the Dubilier Company. | ||
| View original record | X.2572 Ms. from EY. c. Mr Brock. [struck through] c. Chat. [struck through] c. CEP. [struck through] c. EFC. [struck through] BY4-P22.2.21. X.2512 CHASSIS - BATTERY IGNITION. CONDENSERS. ----------… | ||
| Scan218 | Failure of Dubilier chassis condensers and requesting the creation of a new test to ensure reliability. | ||
| View original record | X 2572 EFC. from BY. C.C. to Mr Brock. X-2512 CHASSIS - CONDENSERS. Referring again to the question of the Dubilier Condenser, and further to my memo EY4-P23221, on the same subject, I feel very… | ||
| Scan219 | Supply of condensers, a meeting with General Electric Co., and the potential for in-house production. | ||
| View original record | W.R. 558A (bis) Y/(H) H. 76B. 10.19-50 © 1917 EFC. from Wd. Sent to Orby Wot? / Mr. Brock. Cr. to Wot? / Mr. Brock. Struck out. X. 2512 RECEIVED 1 MAR 1921 HS Wd7/NJ1.3.21. X.2512 Condensers. Upon… | ||
| Scan220 | Test failures and the need for a special checking method for Dubilier Condensers. | ||
| View original record | S.D.(100 T) (S.G. 643, 19-2-20) G. 2818 X2572 STAMPS: MAR 1921; Hs; EFg; From EV; RECD 2512 BY4-P8.3.21. CHASSIS - CONDENSERS. Further to my memo BY15-P24221, which I am afraid was sent to you in your… | ||
| Scan221 | 10% testing procedure for condensers to ensure their reliability before being fitted to a chassis. | ||
| View original record | R. (100 T) (S. G. 643. 19-5-20) G. 2518 BY4-P8.S.21. contd. - 2 - (2) ctd. I should consider that 10% tested in this manner would meet the case. If it should happen that all of these later Condensers… | ||
| Scan222 | Test procedure for 12 Dubilier made condensers to overcome failures on chassis after production tests. | ||
| View original record | M.H. Bks. (100 T) S. B. Tus. (0) Din G. 1017 X.2512. 10.3.21. X. 2512 - CONDENSERS. Tests to be carried out on 12 Dubilier made condensers which we have received to enable us to devise some… | ||
| Scan223 | Continuation of a test procedure for condensers, outlining further treatment and reserve units. | ||
| View original record | -2- Contd. more drastic treatment by being put on the resonance test under varying conditions . 3. After which, any condensers which have stood the above shall be placed on the test rig on the bench… | ||
| Scan224 | Receipt of 12 Dubilier make condensers from the Test Department for special tests, listing their serial numbers and groups. | ||
| View original record | R.R. 294a (100 T) (S.H. 798. 10-12-20) G. 1947 7.3.21. EFC. X.2512 - CONDENSERS. Herewith please receive 12 condensers from Test Dept. Nos. 786 813 825 823 785 730 727 778 810 780 800 796 Group Group… | ||
| Scan225 | Instructions for a special test of Dubilier-made condensers. | ||
| View original record | RR 300 (120B) (SF 349 24-1-19) MP 200552 X. 2512 88297 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No.: AA 31 Customer's No.: 1 Re.: X 2512. Special Test of Dubilier-made Condensers. Lately… | ||
| Scan226 | Instruction sheet detailing the results of endurance tests performed on different groups of condensers. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. RR 300 (120B) (SF 349 24-1-19) MP 200552 88298 To Order No. Customer's No. Z. Re. No 786 broke down at once; the others (785 & 810) withstanding the test which was… | ||
| Scan227 | Instruction sheet regarding the reliability and suitability of untested parts from group A for the RR car. | ||
| View original record | RR.300.(120B) (SF 349 24-1-19) MP 208552 88299 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No. Customer's No. 3 Re. should be quite reliable on the RR car, but those of group A which are sound have… | ||
| Scan228 | The systematic investigation of Dubilier made condensers for battery ignition. | ||
| View original record | X.2512 To Hy. from EFC. c. to Wor/Mr. Brock. c. Wd. c. EP. EFC7/T21.3.21. X. 2512 - DUBILIER MADE CONDENSERS. We have now completed a systematic investigation of the 12 Dubilier made condensers for… | ||
| Scan229 | Proposal for an additional resonance test on Dubilier made condensers to detect weaknesses. | ||
| View original record | Contd. -2- EFC7/T21.3.21. the condenser terminals, and this test would only be of 10minutes duration. This test imposes a voltage about the same as that attained in the 18 volt battery test, but of a… | ||
| Scan230 | The testing of condensers, detailing a resonance test and listing serial numbers of units considered acceptable for car use. | ||
| View original record | Contd. -3- EFC7/T21.3.21. voltage of the mains and the resistance of the secondary winding, as in these circumstances the inductance of the winding is counteracted entirely by the capacity of the… | ||
| Scan231 | Table outlining special tests conducted on twelve Dubilier made condensers for battery ignition. | ||
| View original record | 21.3.21. X.2512 - TABLE OF RESULTS OF SPECIAL TESTS ON TWELVE DUBILIER MADE CONDENSERS FOR R.R. BATTERY IGNITION. Condensers divided into four groups of three each as follows :- Group A. Nos. 785,… | ||
| Scan232 | Results of a series of bench and production tests on three groups of components. | ||
| View original record | R.R. 950a (100 T) (S. R. 708, 10-12-30) G. 2047 -2- Contd. Results. Group A. 1st. Test 1. (Std bench test) All O.K. 2nd. Test 4. (18 volt bench test) Two O.K. No. 786 broke down. 3rd. Test 2. (Std… | ||
| Scan233 | Report page detailing the results of three tests on components from Group D. | ||
| View original record | -3- Contd. Group D. 1st. Test 3. No.823 broke down. 2nd. Test 4. O.K. on 778 & 796. 3rd. Test 2. both O.K. Both held charge well. R.R. 138A (100) (T) (S.H) 198. 10-12-40) G. 5947 | ||
| Scan234 | Extract from a report on electrical matters, discussing battery ignition systems. | ||
| View original record | X.2512 Extract from Mr. Elliott's report E6/G31.3.21 re Electrical Matters. Visit of Messrs. Wormald & Hives to W.W. on 19.3.21. (16) BATTERY IGNITION. X.4275. X.2512 X.3129 X.3445. The condenser on… | ||
| Scan235 | Production cost of battery ignition condensers and the possibility of outsourcing. | ||
| View original record | To Wd. from EFC. X 2512 EFC7/T1.4.21. X.2512 - CONDENSERS. X.4289 The present cost of production of the battery ignition condenser in our Works we understand to be £2.7.1. Should we succeed in… | ||
| Scan236 | Comparison table of various condensers, detailing currents and estimated capacities at different voltages. | ||
| View original record | X.2512 2.4.21. X. 2512 - CONDENSERS. Comparison of capacit, currents and estimated capacities. Condenser No. | m.a. at 200 volts 50.7~ | Estimated capacity. M.f. | m.a. at 226 volts 41.7~ | Estimated… | ||
| Scan237 | Status report on various condensers in the Experimental Department. | ||
| View original record | X2512. 2.4.21. X. 2512. CONDENSERS IN EXPL. DEPT. Condenser. Particulars. R.R.10. O.K. G.E.C.3. Soldered connections. Tested O.K. (L.F.27.10.19). R.R.11a. O.K. R.R.16. Broken down. S.R.R.1 O.K. on… | ||
| Scan238 | Unsatisfactory reliability test results of Dubilier condensers compared to in-house versions. | ||
| View original record | [Stamp: Wd. From PY C. McC C. EFC. RECEIVED 4 APR 1921] COPY. X2512 EY6-P4.4.21. X.2512. CHASSIS - CONDENSERS. With reference to the Condensers which have been made by the Dubilier Company and were… | ||
| Scan239 | Instruction sheet detailing the test results for Dubilier made condensers. | ||
| View original record | R.R. 100 (120B) (SF 349 24-1-19) MP 200552 X2512 88308 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Order No. AA 54 Customer's No. 1 Re: X 2512. Completed Lists of Dubilier Made Condensers All twelve… | ||
| Scan240 | Query regarding the status of Dubilier make condensers after testing in the Experimental Department. | ||
| View original record | To By. from EFC. c. Wor/Mr. Brock. X. 2512 EFC1/T7.4.21. X. 2512 - CONDENSERS (DUBILIER MAKE). We shall be glad to hear what has been done or instructed to be done with the Dubilier made condensers… | ||
| Scan241 | Letter from Dubilier Condenser Co. Ltd. regarding the testing of chassis condensers. | ||
| View original record | By. from Wd. c. to EFC. c. to Ms. c. to Wor/Mr.Brock. X. 2512 X.2512 Chassis Condensers. Referring to yours By6/P4.4.21 and By15/P24.2.21, also EFC's note EFC1/T15.2.21, we are in receipt of a letter… | ||
| Scan242 | Unofficial visit to condenser supplier, Dubilier Co., discussing manufacturing processes and potential improvements. | ||
| View original record | R.H. 251a (100 T) S H. 708. 19-12-20 G. 4947 X2512 -4- Contd. X.2512 X3082 X3348 FRIDAY MORNING I paid an unofficial visit to Messrs. Dubilier Co. Hammersmith, who are making our condensers. I cannot… | ||
| Scan243 | Reliability and testing results of Dubilier and R.R. condensers. | ||
| View original record | Wd. from BY. c.c. Mr. c.c. EPC. c.c. Mr Brock. X.2512. X2512 CONDENSERS - RE RELIABILITY OF DUBILIER MAKE. Further to my memo BY6-P4421, on the above subject, I have now been able, as promised, to… | ||
| Scan244 | Continued letter urging the Dubilier Company to build condensers in a dustless environment to avoid troubles. | ||
| View original record | BY7-P18.4.21. contd. - 2 - between the plates, as we found that our product improved in direct ratio to our cleanliness, and when I was able to move our Condenser Department to a less dusty atmosphere… | ||
| Scan245 | The comparative reliability testing of Dubilier make condensers against the company's own. | ||
| View original record | X.25/2. Ry. from Wd. a. to Ms. c. to EEC c. to WOP/Mr.Brock. Wd11/NJ27.4.21. X.25/2 Condensers. Re Reliability of Dubilier make. Upon receipt of yours By7/P18.4.21, we wrote the General Electric… | ||
| Scan246 | The comparative testing of Dubilier and Rolls Royce condensers, with a proposal for their use in production. | ||
| View original record | Wd. from BY. c. EFC. c. Mr Brock. c. EP. X.2512 RE DUBILIER CONDENSERS. We have now completed a 14 days continuous test of a Dubilier Condenser, also a Rolls Royce Condenser, under precisely similar… | ||
| Scan247 | Request for information on the capacity and construction of a Delco Packard condenser for the Goshawk II engine. | ||
| View original record | X 2512 To E C. from E. c. to CJ. c. to Wor. c. to Hs. E2/G28.5.21. X.4284 - RE GOSHAWK II CONDENSER FOR BATTERY IGNITION. X.2512. In connection with the above, would you please find out, in accordance… | ||
| Scan248 | Feedback from Mr. Royce on the blueprint for a 40/50 HP Battery Ignition Condenser, suggesting alterations. | ||
| View original record | To HS) (EFC) from E. c. to CJ. c to By. c. to Da. X 2572 E3/G4.6.21. X.4054 - 40/50 H.P. BATTERY IGNITION CONDENSER. X2512. The blue print of the condenser D.1682 has been received and Mr. Royce… | ||
| Scan249 | The performance of two batches of Dubilier Condensers and a request to mark them distinctively. | ||
| View original record | X.2512 HS RECEIVED BY1-P8.6.21. Wd. From BY. c. Mr Brock. c. RP. c. EFC. X.2512 DUBILIER CONDENSERS. We have received two reports from Mr Brock dealing with two separate consignments of 70 Condensers… | ||
| Scan250 | Confirmation of a telegram from Royce concerning ignition condenser and contact trouble. | ||
| View original record | CONFIRMATION OF TELEGRAM TELEPHONED TO CHICHESTER. X2572 ROYCAR DERBY. X2512. X.186. X4054 CLARK CANNOT UNDERSTAND WHY FROM HIVES REPORT THAT CONDENSER AND CONTACTS ON OUR IGNITION GIVE TROUBLE NO… | ||
| Scan251 | Instruction sheet detailing the capacities of two condensers from aero distributors for a Goshawk II engine and a 3EX chassis. | ||
| View original record | RR 238 (500 Bks.) (SF 152. 6. 11. 18.) MP 197880 X.2512 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFC Date: 9 June 1921 Order No: AD 5. Customer's No.: 1. X2512. RR Aero Condensers. The capacities of two… | ||
| Scan252 | The ignition system components for the 4-EX vehicle after its return from America. | ||
| View original record | x 2572 Extract from R2/G21.6.21. REPORT ON 4-EX JUST RETURNED FROM AMERICA. High Tension Distributor. X.800 X.3309. X.4275. One of the chief defects still remaining appears to be the jump spark… | ||
| Scan253 | Page questioning the reliability of a condenser's construction. | ||
| View original record | R.R. 235a (100 T) (S.H. 798, 10-12-29) G. 2948 -2- Contd. one wonder whether the condenser is quite reliable in construction. | ||
| Scan254 | Preferred insulation material for a condenser on a 40/50 HP chassis. | ||
| View original record | X 2372 To BY. from E. c. to CJ. c. to EFC. c. to Hs. E7/G23.6.21. X.2512 - RE ARRANGEMENT OF CONDENSER - 40/50 H.P. CHASSIS. X.4054. In reply to your memo EY10/P6.6.21, I have taken up the points you… | ||
| Scan255 | Request to test four Dubilier Condensers reported to have excessively high capacity. | ||
| View original record | R.R. 235a (100 F) (S.H. 728 10-12-20) G. 2948 X. 2512. HFC. X.2572 Wd/GHB1/W25621. 25th June.1921 We send you herewith 4 Dubilier Condensers which we have been asked to return from the 13th delivery… | ||
| Scan256 | Instructions regarding the testing and return of faulty Dubilier Condensers. | ||
| View original record | RR 238 (500 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. Mr E. G. Clark To: Mr Helles-OO. Order No Customer's No. We have tested the last 70 Dubilier Condensers G.R. 213168.… | ||
| Scan257 | The testing and return of three out of four Dubilier condensers, one of which failed during a high-voltage resonance test. | ||
| View original record | X. 2512 To Wd/GHB. from EFC. EFC4/T4.7.21. ________________________________________________________ X. 2512 - DUBILIER CONDENSERS OF EXCESS 6 CAPACITY. We are now returning 3 of the 4 Dubilier… | ||
| Scan258 | Instruction note regarding testing of four Dubilier condensers which have excess capacity. | ||
| View original record | RR 338 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X 2572 (1) ROLLS-ROYCE LIMITED. INSTRUCTIONS. To EFC Order No. AB.9 Customer's No. 1 4 July 1921 X 2572 Dubilier Condensers of Excess Capacity X.3129.… | ||
| Scan259 | Instructions detailing a comparison test of different condensers against a standard on a distributor with platinum-iridium points. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 2. These give respectively, .236, .242, .245, .245 mf. One of the two largest condensers… | ||
| Scan260 | Instructions regarding condenser capacity to prevent misfires and splashing at the contact points. | ||
| View original record | ROLLS-ROYCE LIMITED. INSTRUCTIONS. RR 231 (500 Bks.) (SF 152. 6-11-18.) MP 197880 To Order No. Customer's No. 3 As the condenser should be of a slightly larger capacity than that which gives the… | ||
| Scan261 | Instruction to test a series of condensers to determine an upper limit and check resonance with an ignition coil. | ||
| View original record | RR. 238.(500 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 4 19 would be instructive to have a series of condensers made up, ranging from about .25… | ||
| Scan262 | Instruction sheet detailing the inspection of condensers and their suitability for production. | ||
| View original record | RR.236 (500 Bks.) (SP 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 5 19 the condenser; but this does not indicate faulty construction in view of the very… | ||
| Scan263 | Electrical characteristics for Remy 6 cylinder, 6-volt ignition coils. | ||
| View original record | X25/2 13.7.21. X.2814 X.2512. REMY 6 CYL. 6 VOLT IGNITION COILS. No. 284A. (Secondary). Resistance - 2,935 ohms. m.a. at 206 volts 50.7~ = 11.6 = .0116 amp. .. Impedance - 18,390 ohms. .. Inductance =… | ||
| Scan264 | Authorising an increase in the top capacity limit for Dubilier condensers used in battery ignition. | ||
| View original record | X2572 To By. from EFC. c. Wor/Mr. Brock. EFC5/T14.7.21. X.1627cr.- PRODUCTION TEST OF CONDENSER FOR BATTERY IGNITION. X2572 With reference to certain Dubilier condensers having recently exceeded our… | ||
| Scan265 | Technical description and comparison of American Bosch and Westinghouse condensers for battery ignition systems. | ||
| View original record | X.2512 Extract from Cy1-G 18721. X.4275 - RE: AMERICAN BOSCH BATTERY IGNITION. X.2512. (4) Condenser. This is of the standard American battery ignition type. A sample of a Westing-house condenser… | ||
| Scan266 | Extract suggesting experiments to run tungsten contact points with increased condenser capacity. | ||
| View original record | W.B.B's. 180 T S.H.286. 19-3-19) G. 2008 X. 2512. Extract from EFC6/T16.8.21. X.2894 - TUNGSTEN CONTACT POINTS+ X.3129. X.2512. It is now suggested to run tungsten points with a larger capacity, and… | ||
| Scan267 | The initial investigation and measurements of a U.S.A. Bosch battery ignition system. | ||
| View original record | To R & E. from EFC. c. to OJ & PN. c. to By. & EP. c. to Rg. & Ds. c. to R.R. of America Inc. X2512 EFC2/T5.9.21. X.4275 - U.S.A. BOSCH BATTERY IGNITION. X3485. We have had very little opportunity so… | ||
| Scan268 | Continued report on ignition systems, focusing on condenser capacity and the integration of new Bosch battery ignition sets. | ||
| View original record | Contd. -2- EFC2/T5.9.21. contained in his Cyl/G18.7.21, in which he states that three connections are made to each condenser plate at equal distances. Even with this number of connections, we found… | ||
| Scan269 | Comparing U.S.A. Bosch paper condensers with existing mica condensers for use in battery ignition systems. | ||
| View original record | X2572 To R. from Hs. c. to CJ. c. to E. c. to Da. c. to BY. c. to EWT. for R.R.Inc. HS7/LG16.9.21. X2512 (struck through) CONDENSERS FOR BATTERY IGNITION. X4275 X2894 (struck through) We have been… | ||
| Scan270 | Conversion table for various units of electrical capacity. | ||
| View original record | X. 2512 27.9.21. X. 2512 - UNITS OF ELECTRICAL CAPACITY. Value in UNIT. | C.G.S.E.M. | Farads. | Microfarads. | C.G.S.E.S. (centimetres). | Micro-micro farads. ---|---|---|---|---|--- C.G.S.E.M. | 1 |… | ||
| Scan271 | Technical memo comparing the capacity of different mica condensers for battery ignition systems. | ||
| View original record | X2512 R. from EFC. c. CJ. c. E. c. De. c. By. EFC2/T27.9.21. X. 2512 - CONDENSERS FOR BATTERY IGNITION. Further to Mr. Hives' note Hs7/LG16.9.21, we have gone into the question of the possible… | ||
| Scan272 | Technical report comparing the capacity, volume, and performance of various ignition condensers. | ||
| View original record | Contd. -2- EFC2/T27.9.21. is .15 mf. this being half the total. The useful volume is estimated to be .56 cu.in. so that the capacity per cu.inch is .27 mf. i.e. rather higher than we get on our mica… | ||
| Scan273 | Continued discussion on condenser capacity for the Goshawk engine, ignition performance, and related component testing. | ||
| View original record | R.R. 235a (100 T) (S.H. 798. 10-12-20) G 2547 Contd. -3- EFC2/T27.9.21. namely, .244 mf. per cubic inch, this will give us a capacity (12) of .31 mf. We welcome the possibility of being able to use a… | ||
| Scan274 | Instruction on standardising iridio-platinum contact points and increasing condenser capacity to reduce sparking. | ||
| View original record | X 2572 To EFC. from R. c. to CJ. c. to Wor. c. to EP. c. to Hs. c. to PN. R2/G29.9.21. X.3656 RE IRIDIO-PLATINUM CONTACT POINTS WITH A MUCH X.2512. SMALLER AMOUNT OF PLATINUM THAN STANDARD. With… | ||
| Scan275 | The diameter of iridio-platinum contact points and an investigation into increasing condenser capacity. | ||
| View original record | R.H. 235A (100 T) S.H. 798. 10-12-30: C 2547 X2572 To R. from EFC. C. GW C. PH. C. WOR. C. EF. EPC2/T1.18.21. X. 3656 - IRIDIO-PLATINUM CONTACT POINTS WITH A MUCH SMALLER AMOUNT OF PLATINUM THAN… | ||
| Scan276 | Unfortunate error in the estimation of the useful volume for the Goshawk condenser. | ||
| View original record | To R. from EFC. cc. E. c. W. c. Ds. c. Hy. X2072 EFC2/T25.10.21. X.3485 - CONDENSER, X2372 Referring to our EFC2/T27.9.21, we regret that an unfortunate error was made in the estimation (from the… | ||
| Scan277 | Continued note comparing the capacity of a Bosch battery ignition system to mica and Goshawk condensers. | ||
| View original record | R.R. 235A (100 T) (S. H. 798. 10-12-20) G. 2947 Contd. -2- EPC2/T25.10.21. that of the Bosch battery ignition, but as pointed out in our note already referred to, the capacity of the Bosch battery… | ||
| Scan278 | Design of an inexpensive condenser for the FE ignition system. | ||
| View original record | To EFC. from R. c.to CJ. c.to Wor. c.to Hs. c.to By. X 2512 X 2512 - FE IGNITION SYSTEM. X.2894. X.3656. I consider it one of the most urgent pieces that you have in hand is to learn how to make an… | ||
| Scan279 | Continued discussion on using tungsten and platinum iridium points for ignition reliability. | ||
| View original record | W.H. 838a (100 T) (S.H. 728.10-12-20) G. 1945 Contd. -2- R1/G3.11.21. Then if we have proof that we can use tungsten points, we may fit moderate sized platinum iridium points which will render the… | ||
| Scan280 | Instructions detailing a test on tungsten contact points with double capacity to suppress sparking. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X2512 8 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFE Date: 7. Nov. 1921 Order No: AB.29. Customer's No.: 1 X.2894 Tests of Tungsten Points with Double… | ||
| Scan281 | Instruction sheet detailing a test to reproduce misfiring conditions in American distributors using tungsten points. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. Z. misfiring at the spark-gaps set in and the contacts showed a slight resistance of about… | ||
| Scan282 | Instructions detailing a preliminary test on electrical points. | ||
| 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 19 A preliminary test under otherwise standard conditions, indicated that merely… | ||
| Scan283 | Investigation into metal transfer, scale formation, and rusting on a distributor roller. | ||
| View original record | R.R. 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 19 To Order No Customer's No. 4 slight transfer of metal and formation of scale, though the result is not yet up to… | ||
| Scan284 | Instructions detailing further tests on contact points using a paper dielectric condenser. | ||
| 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 for two weeks, without the modification on one oiling, during the same period. Further… | ||
| Scan285 | Instructions to test an American ignition set by fitting a mica condenser and observing for contact failure. | ||
| View original record | RR 238 (100 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No. Customer's No. 6 Accordingly, it would be instructive to fit a mica condenser to one of the American… | ||
| Scan286 | Production difficulties and experimental work on condensers, specifically regarding paper insulation. | ||
| View original record | To R. from EFC. c. to CJ. c. to Da. c. to By. c. to Wor. c. to Wd. X. 2512 EFC1/T16.11.21. X.2512 - CONDENSERS. We are doing all we can on condensers as a result of instructions contained in your note… | ||
| Scan287 | Technical report discussing the difficulties and comparative analysis of different condenser types and materials. | ||
| View original record | Contd. -2- EFC1/T16.112.1 The difficulty in the first case is that only mechanical a limited pressure can be applied to the plates without affecting breakdown, and this limits materially the capacity… | ||
| Scan288 | The specifications and alternatives for a Goshawk ignition condenser, including consulting with Messrs. Dubilier. | ||
| View original record | Contd. -3- EFC1/T16.11.21. for the Goshawk ignition to be .25 mf. we do not see how it is possible to attain this result on a mica condenser in the space provided. We could get a little nearer by… | ||
| Scan289 | Letter from Rolls-Royce of America regarding an enquiry into the breakdown of insulation in paper condensers. | ||
| View original record | V2 572 Oy5-G211121 Nov. 21, 1921. X. 4275 1/2 X. 2512. X. 4430. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Copies attached for Mr.Hives & Mr. Clark. Dear Sir:-… | ||
| Scan290 | Letter discussing battery ignition condenser tests and comparing test procedures. | ||
| View original record | AMERICAN BOSCH MAGNETO CORPORATION Springfield, Mass. Sept. 6, 1921. Rolls-Royce of America, Inc. Springfield, Mass. Re. Battery Ignition Condenser Tests. Att. Mr. Olley. Gentlemen:- I have at hand… | ||
| Scan291 | Page 2 of a letter from American Bosch Magneto Corporation regarding condenser specifications and testing. | ||
| View original record | -2- Contd. mica condenser without completely destroying its effectiveness. A leaky condenser is, of course, equivalent to a capacity in parallel with the leakage resistance. This leakage resistance is… | ||
| Scan292 | Questioning the purchase of Dubilier condensers and proposing design modifications for increased capacity. | ||
| View original record | To EFC. from R. c. to CJ. c. to Nor. c. to Hy. c. to Hs. c. to Wd. V2572 RO/G21.11.21. X.4435 - RE CONDENSERS - EFC1/T16.11.21. X.2512. I do not understand why we are buying Dubilier condensers for… | ||
| Scan293 | Continued note on achieving a taper shape with square radial ends and rounded corners. | ||
| View original record | Contd. -2- R9/G21.11.21. possibly slightly taper shape could be obtained, and by increasing the angular length and forming square radial ends with small rounded corners. R. | ||
| Scan294 | Supply and pricing of condensers for the 40/50 chassis from an outside supplier versus in-house production. | ||
| View original record | To R. from EFC. c. to CJ. c. to Wd. X2672 EFC5/T24.11.21. X.2512 - CONDENSERS FOR 40/50 CHASSIS. Answering the first paragraph of your R9/G21.11.21, arrangements for the supply of condensers from… | ||
| Scan295 | Letter from Metropolitan-Vickers Electrical Co. to Mr. Royce regarding the supply of Mica Splittings for magnetos. | ||
| View original record | FORM 1703A TELEGRAMS, "METROVICK" MANCHESTER TELEPHONE 190 TRAFFORD PARK (8 LINES) METROPOLITAN-VICKERS ELECTRICAL CO, LIMITED. REGISTERED OFFICE :- 4 CENTRAL BUILDINGS, WESTMINSTER, LONDON, S.W.1… | ||
| Scan296 | Producing and testing six new condensers using a rediscovered varnished insulating paper for Goshawk Chassis reliability trials. | ||
| View original record | K.R. 199 (250T) (SD676 19-7-17) MP180865 X.2512 RECEIVED c. Hs. c. Mr.Gamble. c. Mr.Robinson. X4480. CONDENSERS. X.2512. Mr.Gamble recently reported to me that he had discovered a large quantity of… | ||
| Scan297 | Cover letter forwarding a communication from 'OY' regarding condensers. | ||
| View original record | H.R. 228a (100 T) (S.H. 768. 10-12-20) G. 2948 X2572 E. from Hs. hs2/LG6.12.21. CONDENSERS. We attach herewith copy of a letter we have received from OY. ref. OY5/G21.11.21. in connection with… | ||
| Scan298 | Design and capacity of a new condenser for the 40/50 model's standard battery ignition. | ||
| View original record | X2672 M R9/08.12.21. To EFC. from R. c. to CJ. PN. BY. EP. Rg. Da. X.3129 - VARYING CONDENSER CAPACITY ON R.R. 40/50 STANDARD BATTERY IGNITION. X.2512. In reply to your memo. EFC/T1.12.21 we have now… | ||
| Scan299 | Improvements for the Goshawk Condenser, including material changes and capacity adjustments. | ||
| View original record | Hs Y2512 R6/M9/12/21. RECEIVED DEC 13 1921 To EFC. from R. Copy to:- bd. FH. Hs. Her. W.A. sd. D.R. Goshawk Condenser. X2572 In reply to your EFC2/T6/12/21., this trouble should never have existed but… | ||
| Scan300 | Technical discussion on the materials and design of electrodes and dielectrics, with a small sketch. | ||
| View original record | (2) to carry the oil film, the silk being only like an open gauze, but the silk is much stronger, and if not much dearer, should be far better to handle. I fear it will not be wise to get 2 electrodes… | ||
| Scan301 | Conversion table for various units of electrical capacity. | ||
| View original record | X. 2512. 12.12.21. X.2512. - UNITS OF ELECTRICAL CAPACITY. Headers: UNIT., C.G.S.E.M., Farads., Microfarads., Jars., C.G.S.E.S., Micro-micro & farads. Row 1: C.G.S.E.M., 1, 10⁹, 10¹⁵, 9 x 10¹⁷, 9 x… | ||
| Scan302 | Condenser capacity for the battery ignition system of 40/50 & Goshawk engines. | ||
| View original record | X 2172 Extract from EFC2/EG29.12.21. X.3485. BATTERY IGNITION FOR 40/50 & GOSHAWK. X.4430. Z.2512. X.4423. As regards the condenser capacity, it would appear that other things being the same… | ||
| Scan303 | Spark generation and condenser discharge in the Goshawk ignition system. | ||
| View original record | -2- Contd. may be done at the instant of make rather than that of break. You may remember that we have already proved the existence of a spark at make by synchronously eclipsing the contacts at the… | ||
| Scan304 | The provision of two standard 40/50 condensers with paper dielectrics for trial on experimental cars. | ||
| View original record | X2572 EFC/T18.1.22. X.2512 - CONDENSERS. X4423 We have this afternoon handed to Mr. Coverley 2 standard 40/50 condensers, but with paper dielectrics, one of these being of standard capacity and the… | ||
| Scan305 | Condenser capacity tests for the Goshawk engine ignition system, noting misfiring speeds at various voltages. | ||
| View original record | EFC. AB.41. X2572 16th March, 1922. X.4430 - GOSHAWK CONDENSER CAPACITY. X.3485. X.2512. Some observations have been made, on the speeds at which misfiring occurs on a 5.0 mm. gap with various… | ||
| Scan306 | Investigation into the performance of U.S.A. Bosch battery ignition condensers, noting capacity drop and leakage when heated. | ||
| View original record | x2572 To CY. from Hs. Hs2/LG5.8.21. X.2512. U.S.A. BOSCH BATTERY IGNITION CONDENSER X.3916. We have been carrying out some investigations on Delco (Packard) Delco (Marmon) U.S.A. Bosch Condensers. I… | ||
| Scan307 | Requesting to find a supplier for a portable condenser testing set. | ||
| View original record | To Wd. from EFC. X2572 EFC4/T3.8.22. X.2512 - CONDENSERS - PORTABLE CONDENSER TESTING SET For the purpose of the above set, we require, if such an instrument is available, a robust direct reading… | ||
| Scan308 | Letter from a scientific laboratory supplier redirecting an enquiry for galvanometers. | ||
| View original record | X.2512 TRADE MARK : "TECHNICO." ESTABLISHED 1880. TELEPHONE: LONDON WALL 1404 & 1405. TELEGRAMS: GALLENKAMP, FINSQUARE, LONDON. CABLE: GALLENKAMP, LONDON. CODES: A.B.C. 6TH ED. & OWN. BRITISH CAPITAL… | ||
| Scan309 | Letter from The General Electric Co. Ltd. acknowledging receipt of an enquiry for a Portable Testing Set for Condensers. | ||
| View original record | CONTRACTORS TO H.M. ADMIRALTY, INDIA OFFICE, WAR OFFICE, G.P.O. AND THE LEADING HOME AND OVERSEAS RAILWAYS. [SEAL: AN ALLIED MANUFACTURER INCORPORATED IN THE YEAR 1906 THE OSRAM G.E.C. LAMP WORKS]… | ||
| Scan310 | Letter from W.G. Pye & Co. proposing an alternative design for a testing instrument for Rolls-Royce. | ||
| View original record | Telegraphic Address: PYE, CAMBRIDGE Telephone: CAMBRIDGE 314 W.G. PYE & CO. Makers of Physical & Electrical Apparatus for Teaching. Instruments of Precision for Commerce & Research. Contractors to… | ||
| Scan311 | Circuit diagram for a condenser testing bridge using an induction coil and telephone receiver. | ||
| View original record | Induction coil. Fixed Resistance Dial Resistance reading direct in M.Fd. Telephone Rec. X condenser (to test) Std: Condenser .5 M.f.d. TUMBLER SWITCH 12 V | ||
| Scan312 | Quotation and technical response regarding a portable testing set for condensers. | ||
| View original record | TELEGRAMS: UNIRIVOT, SOWEST, LONDON. CODES: A.B.C. (5TH AND 6TH EDITIONS); WESTERN UNION; BENTLEY'S. TELEPHONE: VICTORIA 7640 (2 LINES) THE CAMBRIDGE AND PAUL INSTRUMENT COMPANY, LIMITED.… | ||
| Scan313 | Quotation for a portable capacity test set from The Cambridge and Paul Instrument Company. | ||
| View original record | TELEGRAMS: UNIPivot, SOWEST, LONDON. CODES: A.B.C. (5TH AND 6TH EDITIONS); WESTERN UNION; BENTLEY'S. TELEPHONE: VICTORIA 7640 (2 LINES). QUOTATION THE CAMBRIDGE AND PAUL INSTRUMENT COMPANY, LIMITED,… | ||
| Scan314 | Letter from John J. Griffin & Sons, Ltd. regarding the testing of condensers. | ||
| View original record | JOHN J.GRIFFIN & SONS, LTD MAKERS OF PHYSICAL, ELECTRICAL & SCIENTIFIC INSTRUMENTS. CHEMICAL APPARATUS. CHEMICALS & REAGENTS. TELEPHONE: GERRARD 2621 (3 LINES) TELEGRAMS: GRAMME, WESTCENT, LONDON.… | ||
| Scan315 | Quotation from The General Electric Co. Ltd. for a High Sensitivity Ballistic Galvanometer. | ||
| View original record | CONTRACTORS TO H.M.ADMIRALTY, INDIA OFFICE, WAR OFFICE, G.P.O. AND THE LEADING HOME AND OVERSEAS RAILWAYS. [LOGO: INCORPORATED IN THE YEAR 1900 THE ELECTRICAL WHOLESALERS FEDERATION] [LOGO: NATIONAL… | ||
| Scan316 | Continuation of a letter from The General Electric Co., Ltd. regarding instrument specifications and delivery. | ||
| View original record | THE GENERAL ELECTRIC CO, LTD. 2 CONTINUATION No............. deflection with 12 volts applied, and we do not consider you will do any damage to this instrument. This instrument is portable in the… | ||
| Scan317 | Illustration of a precision physical measurement instrument, possibly a type of galvanometer or magnetometer. | ||
| View original record | ", | ||
| Scan318 | From Nalder Bros & Thompson Ltd declining a request. | ||
| View original record | F.H. NALDER, MANAGING DIRECTOR. Memorandum. From Nalder Bros & Thompson, Ltd ELECTRICAL ENGINEERS, Lane Works, 97a Dalston Lane. Dalston E.8. TELEGRAPHIC ADDRESS, "OCCLUDE, KINLAND, LONDON." To Messrs… | ||
| Scan319 | And comparing options for a condenser testing instrument from various suppliers. | ||
| View original record | RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 X2572 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: EFR Date: 12 Sept 1922 Order No: HB.57 Customer's No.: 1 X 2572. Condenser Testing Instrument. Of the firms… | ||
| Scan320 | Copy of a letter from Gambrell Bros. Limited regarding a sample electrical testing instrument. | ||
| View original record | V2572 COPY OF LETTER RECEIVED FROM GAMBRELL BROS. LIMITED, (Manufacturers of :- ELECTRICAL TESTING INSTRUMENTS) Merton Road, Southfields, London, S.W.18. Our ref. A O 24th August, 1922. Messrs.… | ||
| Scan321 | Offers from various suppliers for a portable condenser testing set. | ||
| View original record | X.2512 To Wd. from EFC. EFC1/T13.9.22. X.2512 - PORTABLE CONDENSER TESTING SET Further to our EFC4/T3.8.22, we have now considered in detail the various letters which have been received from :- (1)… | ||
| Scan322 | Trial of the sample 'Onward' Galvanometer which was found unsuitable for the portable condenser testing set. | ||
| View original record | X.2512. To Wd. from EFC½ EFC2/T21.9.22. X+2512 - PORTABLE CONDENSER TESTING SET. We have now made a trial of the sample 'Onward' Galvanometer as sent by Messrs. Gambrell Bros. and we have decided that… | ||
| Scan323 | Despatch of a Portable Condenser Testing Set and an 'Onward' Galvanometer. | ||
| View original record | X 2512 To Wd. from EFC. c. Shipping Office. c. Despatch Stores. EFC2/T22.9.22. X.2512 - PORTABLE CONDENSER TESTING SET. Further to our EFC2/T21.9.22, we are this morning sending into the Stores to… | ||
| Scan324 | Request for an order to purchase various electrical components to build a portable condenser testing set. | ||
| View original record | R.R. 199 (2,50T) (SD570 19-7-17) MP18c805 X2572 EFCL/T23.11.22. To Wd/Ms. from EFC. X.2512 - PORTABLE CONDENSER TESTING SET. Would you kindly provide this Dept. with an order to obtain in town for the… | ||
| Scan325 | Failure of battery ignition on 40/50 chassis due to premature burnout of platinum points, and a proposed fix using a different condenser. | ||
| View original record | X2672 BY. c. to EFC. c. to Hs. c. to Sft. EP4/H7.6.23. RE FAILURE OF BATTERY IGNITION. X.4054. X.2512. X.4423. 40/50 CHASSIS. We have recently had a number of complaints of excessive burning away of… | ||
| Scan326 | Calling for a meeting to discuss differing opinions on the value of various condensers for 40/50 & 20HP models. | ||
| View original record | Hs. E.P. E.F.C Hm. Mx. BY2-P12.6.23. x2512 40/50 & 20HP CONDENSERS. x4430 x4423. There seems to be distinct differences of opinion in regard to the value, or otherwise, of the different types of… | ||
| Scan327 | Confirming agreements and discussing faults regarding condensers for the 40/50 & 20 HP chassis. | ||
| View original record | X2512 Hs. EFC. EP. Hm. BY14/P14.6.23. X.4430 X.2512. X.4423. CONDENSERS. 40/50 & 20 H.P. CHASSIS. I wisht to confirm that the position agreed to by the above people in discussing the condenser… | ||
| Scan328 | Producing and examining condensers for the first 50 cars to check for faults. | ||
| View original record | By14/P14.6.23. -2- Contd. to have a number of condensers produced to our latest instructions and having same sent to Depots, and in addition possibly we will condenser changing the first 50 cars, with… | ||
| Scan329 | Test report for a returned condenser, confirming it is functioning correctly. | ||
| View original record | RR 238 (300 B152. 6-11-18.) MP 197880 X-2512. ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E F C Order No.: P.B.103 Customer's No.: X 2512 Date: July 6th 1923 Test of Condenser (40/50 Mica) CH 7CH This… | ||
| Scan330 | Note directing to a file regarding the Phantom Condenser for further correspondence. | ||
| View original record | X.2512. For further correspondence see file X.8700 - Phantom Condenser. EFC. | ||