Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 49\5\        Box Selection

IdentifierEntry
Scan001 Unsatisfactory Bakelite case for the Goshawk 11 ignition coil and recommending a change of material.
View original record W.R. 199 (2)D(T) (SD676 19-7-17) M1/180805 X4273 EFC. Hs. Wd. C. J. Dept. BYG-P9.11.22. X.4273 X.4079 GOSHAWK 11. IGNITION COIL. It is quite evident from the facts of the case so far arrived at that…

Scan002 The standardisation and testing of a 4'/50 ignition coil for the Goshawk.
View original record To R. from EFC. CJ. X4273 EFC3/T10.11.22. X.4273 4"/50 IGNITION COIL FOR GOSHAWK. We are sending you a standardisation sheet to sign for the 40/50 coil as a temporary measure. Our experiments,…

Scan003 Responding to a telegram about a standardisation sheet for a 40/50 coil in a stabalite case for the 'Goshawk'.
View original record To EFC. from BJ. BJ6/H14.11.22. Y4278 40/50 coil in stabalite Case for "GOSHAWK". With reference to your telegram, I received standardisation sheet yesterday and despatched it same day. You have…

Scan004 Standardisation sheet for a temporary 40/50 Ignition Coil for the Goshawk engine.
View original record S.C. 80a (100 T) (S.H. 79s. 10-12-20) G. 2948 X4273 TO EFC. FROM RS. STANDARDISATION SHEET. 40/50 Ignition Coil for Goshawk. Temporary measure pending perfection of Goshawk coil in bakelite case. The…

Scan005 Confirming the dispatch of a 40/50 coil and a high tension terminal insert for a Goshawk chassis.
View original record To R. from EFC. c.c. UJ. X4273 EFC8/T16.11.22. 4079 N.3485 - GOSHAWK BATTERY IGNITION. X4273 We have your memos R1/M13.11.22 and R2/M10.11.22 also your telegram of to-day's date to hand. We are…

Scan006 Despatch of a 40/50 ignition coil for a Goshawk chassis to Mr. Royce.
View original record X4273 To Wd. from EFC. c. Shipping Office. c. Despatch Stores. EFC9/T16.11.22. X.4273 - 40/50 IGNITION COIL FOR GOSHAWK. We are sending into the Stores for despatch to Mr. Royce, one 40/50 ignition…

Scan007 The temporary standardisation of the 40/50 ignition coil for the Goshawk.
View original record To R. from EFC. " CJ & EJ. " Wor. " Rg. Da. " By. " EP. " PN. X4273 EFC1/T17.11.22. X. 4273 - TEMPORARY STANDARDISATION OF 40/50 IGNITION COIL FOR GOSHAWK. Herewith please receive for your permanent…

Scan008 Temporary standardisation to use a 40/50 Ignition Coil for the Goshawk vehicle due to failures with the original bakelite cased coil.
View original record STANDARDISATION of CHASSIS PARTS. Description of Parts. 40/50 Ignition Coil for Goshawk. Temporary measure pending perfection of Goshawk coil in bakelite case. Origin. Partial failures of std. Goshawk…

Scan009 Experimental test report comparing coil failure in bakelite versus stabalite cases.
View original record Expl. Test Report. EFC1/T10.11.22. It has been amply proved by numerous tests that whereas coil failure can almost invariably be produced on the coil in bakelite case by extreme conditions, the…

Scan010 Note suggesting the temporary standardisation of the Goshawk 40/50 coil for production uniformity.
View original record Note:- EFC/T10.11.22. 1804 For uniformity of production, i.e. in order not to have an additional standard, it is suggested temporarily to standard for the Goshawk the 40/50 coil exactly as it is…

Scan011 The temporary standardisation of the 40/50 ignition coil for the Goshawk.
View original record To By. from EFC. c. EP. c. Wor/Mr. Brock. X.4273 - TEMPORARY STANDARDISATION OF 40/50 IGNITION COIL FOR GOSHAWK. The ballast resistance to be used with the 40/50 ignition coil for the Goshawk, in…

Scan012 Improving the performance of car No. 6 GOSHAWK by changing the ignition coil.
View original record TO EHC. CJ. HJ.PH.) FROM R. R2/A23.11.22. MS. BY.HY.) X4273 ORIGINAL X4273 NO. 6. GOSHAWK. We have changed the coil on this car to a stabalite cased one (40/50). It has improved the car immensely.…

Scan013 Ignition alterations for Goshawk models intended for hot climates.
View original record Y4273 To BJ. from R. c. CJ. BY. c. Hs. EP. R1/M23.11.22. GOSHAWK FOR ABROAD. X.4079 X.4075 H273 All the cars for hot climates should have the ignition altered to that which is found to be best, either…

Scan014 Improvements to the Stabalite coil for the Goshawk engine, including heat insulation and design modifications.
View original record W.R. 199 (250T) (SD676 19-7-17) M/18086s X4273 To Ey. from EFC. c. EP. EFC1/T25.11.22. X.4273 - STABALITE COIL FOR GOSHAWK. You will have seen R's note R2/M23.11.22 stating how much it has improved…

Scan015 Standard ignition for the Goshawk chassis destined for abroad.
View original record X4273 Sg. c. to Hs. Hs / NOV 27 1922 RECEIVED EP/Thnl/H25/25.11.22. X4273 X4075 re. GOSHAWK CHASSIS FOR ABROAD. With reference to your memo Sg10/BM/24.11.22, (copy attached for Hs), the present…

Scan016 The condition of 20 HP Goshawk chassis allocated for abroad.
View original record COPY. S/W. EP. Sg10/HM/24.11.22. re. GOSHAWK CHASSIS FOR ABROAD. >>---------- Referring to R1/M23.11.22. As we have not yet had any 20 HP. handed over to us in a satisfactory condition, out of those…

Scan017 Requesting experiments on the Goshawk ignition system's coil temperature tolerance and battery compatibility.
View original record X4273 To EFC. from R. c. CJ. c. Wor. c. EP. c. Hs. c. PN. R2/M30.11.22. X.3485. GOSHAWK IGNITION. X4079 X4273 I should like you to find at what temperature the stabelite coil works when fixed in the…

Scan018 Instruction regarding the replacement of failed Goshawk II ignition coils with new standard Stabalite cased versions.
View original record R. c. CJ. c. BJ. c. EP. c. Hs. X.4273. BY2/P27.11.22. GOSHAWK II. IGNITION COIL. X.4273. X4079 Instructions have been issued that no cars shall be despatched with the original type of ignition coil…

Scan019 Ignition coil failures, investigations, and experimental improvements for the 20 HP and 40/50 models.
View original record x4273 To EP. from EFC. c. RV. c. Wor. c. Sft. for Mr. Brock. EFC1/T17.7.23. X.4079 - 20 H.P. IGNITION COILS. x4273 Further to our EFC2/T16.7.23. coil No.2963, in which there existed a definite break…

Scan020 Analysis of coil failures and potential remedies, discussing different materials and designs.
View original record Contd. -2- EFC1/T17.7.23. a case in Redmanol material which so far has not given the least sign of failure in extreme conditions. This is the only coil that can at the moment be looked upon as an…

Scan021 Investigation report on faults in Goshawk ignition coils and a potential new material for coil cases.
View original record x4273 To EP. from EFC. c. BY. WOR. c. Sft. for Mr. Brock. EFC6/T17.7.23. 4273 X.4079 - GOSHAWK IGNITION COILS. Further to our EFC1/T17.7.23, coils Nos. 2960 and 3009 have been further investigated.…

Scan022 Instructions for an experiment to build three modified battery ignition coils.
View original record y4273 EXPERIMENTAL BY/Del/AL.26.7.23. Mr. H.P.C. [Struck through] Mr. R.H.S. [Struck through] Sir Fdk. Gamble. [Struck through] C. Hs. [Struck through] X4273 RE BATTERY IGNITION COIL. X4079 X3445 In…

Scan023 Instruction sheet for the acceptance of three spark coils with paper insulated primary windings.
View original record RR 26 (10M BXS) (SK 185 6-10-22) MP 260735 X. 4273. ROLLS-ROYCE LTD. INSTRUCTIONS. To W. Clarke Date: 15. 8. 1923 Order No. EXP Dept. Customer's No. 50409 Kindly accept 3 Spark coils D1167 Primary…

Scan024 Confirmation memo regarding the handover of 40/50 Stabalite coils for the Goshawk engine.
View original record X4273 To Hs/TMW. from EFC. EFC1/T16.8.23. X. 4273 - 40/50 STABALITE COILS FOR GOSHAWK. This is to confirm that we have handed to you coils 1PP and 3PP to be fitted respectively on G1 and 3GII. These…

Scan025 Specification table for various coil primary windings.
View original record X4273 Typed 17.8.23. X.918 - COIL PRIMARY WINDINGS. X.4079. X.4273. X.3173. X.4596. X.3445. Coil. | Number of turns. | Number of layers. | Dia. of wire. | Gauge of wire. S.W.G. | Approx. resis. (cold)…

Scan026 Complaint and investigation into faulty Goshawk 11 ignition coils.
View original record X4273 To EFC. BY/Ds3/M.20.8.23. RE GOSHAWK 11 IGNITION COIL. With reference to EP's complaint, he returned three Ignition Coils stated to be faulty, you will remember that two of these coils were…

Scan027 Confirming the use of paper insulation and no varnish for the primary winding on 40/50 Stabalite coils for Goshawk.
View original record x4273 To Ry/Ds. from EFC. c. Mr. Brock. EFC3/T21.8.23. X.4273 - 40/50 STABALITE COILS FOR GOSHAWK. This is to confirm that as arranged in conversation, in all further coils of the unlengthened 40/50…

Scan028 Failures and testing procedures for the 40/50 Stabalite ignition coil for the Goshawk.
View original record To Sft.for Mr.Brock. " EP. " BY. x4273 EFC4/T21.8.23. X.4273 - 40/50 STABALITE COIL FOR GOSHAWK. With reference to failures of ignition coils in the primary windings, these failures are of such a…

Scan029 Failure analysis of four returned ignition coils.
View original record X.4273. EFC/T21.8.23. X.4273 - IGNITION COIL PRIMARY FAILURES Details of four coils returned from EP. as faulty. N.B. Coils Nos. 2960 and 3009 were two of the first batch of three. Coil Nos. 3016 and…

Scan030 Failures of the Standard 40/50 Stabalite Coil for Goshawk due to primary insulation.
View original record X4273 To By/Ds. from EFC. EFC5/T21.8.23. X.4273 - STANDARD 40/50 STABALITE COIL FOR GOSHAWK. Referring to your By/Ds3/ML20.8.23, it seems pretty certain that the cause of all these failures is the…

Scan031 Production testing protocol for ignition coils.
View original record X 4273 To EY. from EFC. To Mr. Brock. EFC3/T12.9.23. X.4273 X.3445. RE IGNITION COIL When we have completed the primary winding production test of a number of coil primaries we have with us at the…

Scan032 Continued testing of ignition coil primaries.
View original record X.4273 EFC. c.c. Mr.Brock. BY/C8/H. 17. 9. 23. IGNITION COIL. With reference to EFC3/T. 12. 9. 23. we consider it most desirable to continue testing coil primaries and for this purpose one in every…

Scan033 List detailing the status and type of coils on various chassis.
View original record X. 4273 19.9.23. X. 4079 X. 4273. COILS ON VARIOUS CHASSIS ETC. 26 10 23 Lab TG 1 Lab. TG 2. Dismantled. 1 TG3 4-GII original unit. 2 TG3 Lab. (mouldensite). Lab. ✓ 3 TG3. 5-GII. ✓ 4 TG3. 6-GII. Lab.…

Scan034 Specification for inspection and testing of the latest type 40/50 coil for the Goshawk engine ignition.
View original record X4273 To EY. from EFC. c. Mr. Brock. c. EP. EFCl/T22.9.23. X.4273 - LATEST TYPE 40/50 COIL FOR GOSHAWK. Herewith please receive copy of a specification of inspection and test which we have drawn up…

Scan035 Production test procedure for a Goshawk 40/50 type ignition coil, without the use of a jig.
View original record X 4273 22.9.23. X.3604cl - PRODUCTION TEST OF GOSHAWK IGNITION X.4273. COIL - 40/50 TYPE. (Without use of jig). (1) Continuity of primary and secondary circuits shall be tested by applying an approx.…

Scan036 Testing procedure for a distributor and contact breaker assembly, page 2.
View original record -2- Contd. is to keep a small resistance made up non-inductively, which, when placed in circuit with the 12 volt battery, ammeter and contact breaker, just permits the passage of 1.00 ampere when the…

Scan037 Specification for electrical testing, detailing voltage and current limits for a primary coil and a consecutive spark test.
View original record -3- Contd. (6) A 4-volt battery shall now be applied to the primary and ballast only, in series. The current indicated and the voltages across the primary coil should comply with the following limits…

Scan038 Test results and specifications for Goshawk ignition coils.
View original record X 4273 X.3604cl. GOSHAWK IGNITION COILS. X.4079. 40/50 TYPE FOR GOSHAWK. X.4273. Table Columns: DATE Coil number. (1) Secondary continuity (2) Secondary milli-amps. (4) O.C.S. test. (5) Running…

Scan039 The issues with using synthetic resin for 20 HP & 40/50 coil cases and the decision-making process for their design.
View original record X4273 EY3/P14.11.23. To R. c. CJ. c. EFC. X.4079b. 20 HP. & 40/50 COIL CASES. X.4273. X.4596. (1) Referring to R7/M12.11.23, special long cases were made in synthetic resin of the bakelite type in…

Scan040 New coil design, its use in replacement work, and manufacturing observations.
View original record Contd. -2- EY/3/P14.11.23. for the increased length. In following this practice we had in mind the possibility of using the new type coil on replacement work where thes shorter type coils failed, as…

Scan041 List of coils for various chassis, detailing their type, material, and number of turns.
View original record X.4273 3.12.23. X.4079 X.4273. X.4596. COILS ON VARIOUS CHASSIS, ETC. TG 1 Lab. (Redmanol) 1 TG3. Lab. (Redmanol) 2 TG3. Lab. (Mouldensite) 3 TG3. 5-GII. (Redmanol). 4 TG3. Lab. (Redmanol). 5 TG3.…

Scan042 List correlating Chassis numbers with corresponding Coil types and specifications.
View original record Chassis. Coil. 49-GB. Old type G. G1. 1 PP. 2 GII. 40/50 Old Std. Stabalite. 3 GII. 3 PP. 4 GII. TS 4. 5 GII. 3 TG 3. 6 GII. TS 1. 7GII. 5 TG 3. ____________________ ____________________ 3.12.23. EFC

Scan043 List of coils for various chassis, detailing their material, location, and turn count.
View original record X.4273 23.1.24. X.4079. X.4273. X.4596. COILS ON VARIOUS CHASSIS, ETC. TG 1 Lab. (Redmanol). 1 TG 3. Lab. (Redmanol). 2 TG 3. Lab. (Mouldensite). 3 TG 3. 5-GII. (Redmanol). 4 TG 3. Lab. (Redmanol). 5…

Scan044 List of chassis numbers and codes cross-referenced with corresponding coil types.
View original record Chassis. Coil. 49-GB. Old type G. G.1. 1 PP. 2 GII. 40/50 old std. stabalite. 3GII. 3 PP. 4 GII. TS 4. 5 GII. 3 TG 3. 6 GII. TS 5. 7 GII. TR 1. 23.1.24. EPC.

Scan045 Performance and mileage record for coil type PP No. 1.
View original record FAB COIL RECORD. Coil Type PP N°1 X. No. 4273 Date. Service on. If on car miles run. If on test notes re use. Total miles run. Remarks re performance. 15-8-23 Received from production — — — Std coil…

Scan046 Test and service log for coil type PP, number 2.
View original record COIL RECORD. Coil Type:- PP No:- 2 X No:- 4273 Date. | Service on. | If on car miles run. | If on test notes re use. | Total miles run. | Remarks re performance. 15-8-23 | Received from production | —…

Scan047 Service and performance log for a specific coil.
View original record COIL RECORD. Coil Type:- PP No:- 3 X No:- 4273 Date. | Service on. | If on car Miles | If on test notes re use. | Total Miles Run | Remarks re performance. 15-8-23 | Received from production. | - | -…

Scan048 Summary list of coils used on various chassis, detailing materials and test information.
View original record X.4273 X.4079. X.4273. X.4596. 19.6.24. COILS ON VARIOUS CHASSIS, ETC. 2TG3. Lab. (Mouldensite). 3TG3. 5-GII. (Redmanol). 4TG3. Lab. (Redmanol). TS 4. TMW.Tests. (Stabalite). TS 5. 4-GII. (Stabalite)…

Scan049 List of chassis models and their corresponding ignition coil types.
View original record -2- Chassis. Coil. 49-GB. Old std.type Z. (stabalite). G-I. e I PP. 2 GII. Old std. Z (stabalite). 3 GII. TR4. 4-GII. TS5. 5-GII. 3TS3. 6-GII. TR2. 7GII. TR3. ________________ EFC. 19.6.24.

Scan050 Instruction sheet detailing the results of production tests on two tall coils, TN1 and TN2, in 'Nestolite' cases.
View original record RR 238 (100 BKS.) (SH57.29-6-20.) MP 224355 X 4273 b ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.G. 15-9-1924 Order No. WA81 Customer's No. X 4273G Production tests on tall coils TN1 and TN2 in "Nestolite"…

Scan051 Observations on the intermittent performance of a coil.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238(150 BKS.)(SHS)7.29-6-20.) MP 224339 To ____________ 19 Order No. WA 81 (2) Customer's No. __________ intermittently on 6.5 mm gaps, the Primary current being .863…

Scan052 Use of different insulating materials for coil cases, comparing the unreliable Nestolite with a new 'Red Compound Dough'.
View original record Ey. from Wd. c.to EFC. c.to Wor/Mr.Brock. c.to OO/GEA X.4273& Wd4/NJ17.9.24. X. 4273& Coil Cases made from a Rubber Base Insulating Material. Following receipt of By14/H16.7.24, I sent North & Sons…

Scan053 Requesting the fitting of a new 'Standard Tall Coil in Nestolite Case' to vehicle 49-GB.
View original record X4273b To RHC. from EFC. EFC2/T22.9.24. X.4273b - STANDARD TALL COIL IN NESTOLITE CASE. We hand you herewith coil TN1. Would you kindly have this fitted to 49-GB in place of the short present standard…

Scan054 The test results for two tall coils in Nestolite cases, with one being returned for improvement.
View original record X. 4273b To SFT/Mr. Brock. EFC1/T22.9.24. X.4273b - TALL COILS IN NESTOLITE CASES. We have put these two coils through our production tests. One of them, TN1, passes the test satisfactorily, but TN2…

Scan055 Table of specifications for coil primary windings.
View original record X4273 25.9.29. X.918 - COIL PRIMARY WINDINGS. X.4079, X.4273, X.3173, X.3445, X.4596. X.8710, X.4501. Short. { Coil. | Number of turns. | Number of layers. | Dia.of wire. | Gauge of wire. | Approx.…

Scan056 Cover memo for a report prepared by Mr. Olley on parts for the American chassis.
View original record Handwritten: X4076 Handwritten: HS To BJ from CJ. To C. from CJ. To TOR from CJ. To RE from CJ. [Struck through] To Hm. from CJ. To SM. from CJ. [Struck through] To HS from CJ. CJ1/E29.7.20. X 4276 Re…

Scan057 Cover letter from Rolls-Royce of America listing six enclosed reports on various automotive components and tests.
View original record x4276 3 Oy2 - G 15720. July 15 1920. Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., 15 Conduit Street, London, England. X. 4276 X 3916 X. 4162 X. 1058 Dear Sir:- We enclose herewith one copy…

Scan058 Letter to Claude Johnson regarding issues with electrical apparatus on postwar chassis and the resulting service expenses.
View original record X4276 COPY. Mr. Claude Johnson, 15 Conduit Street, London, England. December, 9th 1920. Dear Mr. Johnson, X4160 X430 X3702 Re Matters on which more complete replies are required from England. X4276…

Scan059 Chasing the Derby factory for more complete replies on luggage carriers, spark plugs, and magnetos.
View original record Oy1/GS.12.20. Dec. 8th 1920. To Mr. Balnap. CC Mr. Nadin. Mr. Burton. Mr. Manning. From :- Mr. Olley. [Handwritten Notes] x 4165 X 3702 x 430 Re Matters on which more complete replies are required…

Scan060 Comparison of serviceability between Watford and American magnetos, highlighting issues and resource drains.
View original record Contd. -2- These magnetos are all extensively used in this country under very arduous conditions in big cars, trucks and tractors, and we believe that at least they would not give less satisfactory…

Scan061 Revised opinion on the quality of American electrical units following a visit to the U.S.A.
View original record X4276 To R. from Hs. c. to CJ. c. to Wor. c. to Bn. c. to E. c. to Da. c. to EP. c. to EWT. for R.R. Inc. c. to EFC. Hs3/LG8.2.21. X4276 AMERICAN ELECTRICAL UNITS. Since my visit to the U.S.A., I have…

Scan062 Comparison of the quality and cost of American and English electrical components and spares.
View original record Contd. -2- HS3/LGS.2.21. have developed various forms of insulation materials which are very much better than those in use in England. From the samples I saw and samples I have brought back with me,…

Scan063 Cost comparison table for a Watford Magneto, detailing the cost at Springfield versus the U.S.A. equivalent.
View original record Contd. -3- HS3/LGS.2.21. Cost laid down at Springfield. Cost of U.S.A. equivalent. Watford Magneto. 92.74 35 dollars. Hs. R.R. 2358 (100 T) (S) H. 198. 10-12-30) G. 2948

Scan064 Visit to U.S. electrical component factories to assess Bosch and Westinghouse starter motors, generators, and magnetos.
View original record To R. from Hs. c. to CJ. c. to BN c. to K. c. to Da. c. to EP. c. to BY. c. to EWT. for R.R.Inc. AMERICAN ELECTRICAL UNITS. During my visit to the U.S.A., I went with Mr. Olley to the Bosch Factory,…

Scan065 Offer from the Bosch Company for magnetos, starter motors, generators, and battery ignition sets.
View original record Contd. -2- that as regards the essential parts, compared favourably with the German, we still had no guarantee that all the magnetos would be up to the sample that we had been shown. The President of…

Scan066 Visits to Bosch and Westinghouse factories regarding automotive electrical components.
View original record Contd. -3- Hs4/LGS.2.21. units on our own Battery Ignition. After being shown all round the Bosch Factory includ- ing the Experimental Departments, and meeting their Engineers and seeing the work they…

Scan067 Equipment guarantee terms, comparing a standard 90-day/3,000-mile guarantee with a potential one-year guarantee.
View original record contd. -4- HS&/LG8. 2.21. ----------- They would not guarantee their equipment in the same way as the Bosch people were prepared to do. Ninety days or 3,000 miles is their standard guarantee but they…

Scan068 Letter from American Bosch Magneto Company regarding the sale price and performance tests of their magnetos in comparison to German Bosch and Watford magnetos.
View original record W.H. 295A (100 T) (S.H. 728. 10-12-20) G. 2947 C O P Y. AMERICAN BOSCH MAGNETO COMPANY, Springfield, Massachusetts, Jan. 5th. 1921. Mr. L.J. Belnap, President. Rolls-Royce of America, Inc.,…

Scan069 Letter detailing proposals for supplying ignition and lighting systems, including service arrangements and testing protocols.
View original record -2- I also explained to your engineers that we would be willing to sell to Rolls-Royce instruments which would all of them be exact duplicates of the samples which your engineers are taking back with…

Scan070 Letter page discussing the price and superiority of American Bosch magnetos and proposing to supply battery sets.
View original record -3- The price of this F.O.B. Springfield, complete with distributor and coil, would be $14.00. I think the most conclusive evidence of the superiority of American Bosch magnetos is the one simple fact…

Scan071 Cost differences between English and American electrical units for the 40/50 HP U.S.A. Chassis.
View original record X4276 To CJ. from R. Extract from R12/G15.2.21. RE 40/50 H.P. U.S.A. CHASSIS. X.4276. The other point of importance is the cost of the electric units as sent out from England, compared with those that…

Scan072 Differences between U.S.A. and European chassis and the process for approving new units.
View original record Contd. -2- R12/G15.2.21. and promises to go on doing so indefinitely with the minimum of repairs, each unit need not be identical on U.S.A. and European chassis, and it would be quite easy to say that…

Scan073 Magneto performance, spark gaps, and a comparison of dynamo systems.
View original record OY. from Hs. x4276 Hs4/LG19.5.21. RE. MAGNETOS. You will have undoubtedly read my report on the requirements of Magnetos for 40/50 chassis. The real object of that report was to prove that the Bench…

Scan074 Comparing Delco and Bijur electrical systems and discussing tests on induction pipes.
View original record contd. -2- I do not think it is right or fair to compare the Bijur with the Lucas. The best voltage control machine should be compared with the best 3rd. brush scheme. I believe then that the…

Scan075 Tests concerning the mechanical distribution of liquid petrol to engine cylinders.
View original record Contd:- -3- 19th.May 1921. we will send a pipe to you. Our tests proved that if we can only obtain good mechanical distribution, by this we mean, if we can only get the same amount of liquid petrol…

Scan076 Copy of a telegram from Mr. Royce to Springfield regarding electrical equipment and parts production.
View original record COPY. X 4276 COPY OF TELEGRAM SENT BY MR. ROYCE TO SPRINGFIELD. 18th June 1921. ROLLSROYCE SPRINGFIELD MASS. X 4276 REGARDING ELECTRICAL EQUIPMENT ADVISE BIJUR STARTER MOTOR AND DYNAMO BOSCH BATTERY…

Scan077 Modification to the 40/50 HP starter motors by using coarser field copper for increased engine speed.
View original record To EFC. from R. c. to CJ. X4276 R10/G12.7.21. X.3082. RE 40/50 H.P. STARTER MOTORS X.4276. I consider that all starter motors for the 40/50 HP. should be wound with coarser field copper, so that the…

Scan078 Extract concerning permission for U.S.A. to adopt Bosch and Bijur electrical components.
View original record X.4276 Extract from RLO/G22.7.21. X.3614. Re U.S.A. ____________________ X.4276. X.4275. X.1058 X.3560 X.3231. We have given them permission to adopt the Bosch Ignition, the Bijur Starting Motor, and…

Scan079 Examination of various U.S.A. switch boxes with a recommendation for the Delco from the Marmon car.
View original record X4276 Contd. -3- R10/G22.7.21. Extract from- X.4276. X.1613 X.895 X.4284. We have now examined the following switch boxes sent from U.S.A., and taken from U.S.A. cars, (1) the Delco from the old…

Scan080 Report discussing the placement and selection of dashboard electrical components like switches, buzzers, and fuses.
View original record R10/G22.7.21. -4- Contd. matters, and the inspection lamp socket might also be included in this ammeter mounting. The press button for the Dashboard light should be very conveniently situated relative…

Scan081 Continued note on the placement of a buzzer versus fuses in a circuit.
View original record Contd. -5- H10/G22.7.21. or a buzzer is used. Apparently the buzzer could only be in the circuit as shown in the wiring diagram attached, whereas the fuses can be in any circuit it is desired to fit…

Scan082 Expressing dissatisfaction with the electrical equipment for the U.S.A. Springfield chassis and considering alternatives.
View original record X4276 To EFC. from R. R12/M20.9.23. SPRINGFIELD ELECTRICAL EQUIPMENT. X.3966. X.4275. X.4276. I am very dissatisfied with the equipment for the U.S.A. Springfield chassis. It is like the supplies of…

Scan083 Reliability of Springfield electrical equipment, including Westinghouse dynamos and American Bosch ignition systems.
View original record Y4276 To R. from EFC. c. CJ. EFC4/T8.10.23. RE SPRINGFIELD ELECTRICAL EQUIPMENT. x3966 X4276 Answering your M12/M20.9.23. (1) Without at the moment going into all the pros and cons, which I do not…

Scan084 Silvex spark plugs, comparing them to A.C., Champion, and German Bosch types.
View original record X4277 Oyd - G 81020 Oct. 8, 1920 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Mr. Hives Dear Sir:- Re: Spark Plugs We would like, at Mr. Hives' earliest…

Scan085 Spark plugs, requesting a report based on an attached letter from America.
View original record EWT. to Hs. X1817 X4277 EWT/HJC2/G29.10.20. X1812 Re: Spark Plugs. RECEIVED OCT 29 1920 Attached hereto is copy of letter ref: Oy4-G.81020 addressed to CJ. from America. Will you please let me have…

Scan086 Test procedures for various makes of sparking plugs.
View original record X.4277 To R. from Hs. c. to CJ. c. to Bn. c. to E. c. to Ey. c. to EP. c. to EWI. for R.R.Inc. Hs5/LG9.2.21. X.1812 - TESTS ON SPARKING PLUGS. X.4295. X.390.5 X.4196. X.4277. Below are the results of…

Scan087 Test report comparing the performance of various types of spark plugs.
View original record -2- Hs5/LG9.2.21. Type of plug. | No. tested. | Test 1. | Test 2. | Test 3. | Test 4. | Test 5. | Remarks. --- | --- | --- | --- | --- | --- | --- | --- Bethlehem U.S.A. | 12 | O.K. | O.K. | O.K. |…

Scan088 Report evaluating and ranking Mercury, Champion U.S.A., and Bethlehem U.S.A. spark plugs, recommending an initial order of Mercury plugs.
View original record H.R. 556A (10M T) S.H. 798. 10-12-20. G 2947. -3- HS5/LG9.2.21. Contd. From the results of these tests we place the - Mercury plug the first Champion U.S.A. plug the second and the Bethlehem U.S.A.…

Scan089 Technical memorandum comparing various brands and designs of sparking plugs.
View original record To Hs. from R. c. to CJ. c. to Wor. c. to EP. c. to HM. c. to R.R. of Amer. Inc. (For the attention of CY). X4244 R1/G16.2.21. X.1812 - RE SPARKING PLUGS. X.4196. X.3413. X.4277. X 3905. X.4295. The…

Scan090 Conclusion of tests recommending the standardization of Champion and Mercury spark plugs for U.S.A. and English made cars respectively.
View original record Contd. -2- R1/G16.2.21. satisfactory. In conclusion, I agree (subject to further exhaustive tests confirming) to prepare for at once standardizing the Champion (Canadian make) for U.S.A. and the…

Scan091 Forwarding a copy of a letter from America concerning Spark Plugs.
View original record X.4277. EWT. to Hs. EWT/HJC14/G24.3.21. x4277 x4196 Re: Spark Plugs. Attached hereto is copy of letter Oy5-G7.3.21 addressed to CJ. from America, for your information. A copy has been sent to R. EWT…

Scan092 Letter regarding the abandonment of Bethlehem spark plugs in favour of the new Champion A-63 plugs.
View original record Oy5 - G 7321 March 7, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Messrs. Royce & Hives. Dear Sir:- Re: Spark Plugs Replying to Mr. Hives' report…

Scan093 Sales letter from Alfred Graham & Company regarding their electrical autohorn.
View original record Alfred Graham & Company, St. Andrews Works, Crofton Park S.E.4. London. 18.2.21. WHL/H. Messrs. Rolls-Royce Ltd., Buying Dept. Derby. Dear Sirs, We are taking the liberty of bringing to your notice…

Scan094 Second page of a letter with a postscript offering to design a special model to suit particular requirements.
View original record H H. 886 a (100 T) (S.H. 758. 10-12-20) G. 2047 -2- W.H. Laynas P.P. DH1. P.S. We might point out that we are prepared to design a special model to suit your particular requirements, if those we have…

Scan095 Forwarding a letter and leaflets from Alfred Graham & Co. for perusal.
View original record Hs. from Wd. Wd3/NJ21.2.21. 1804 Alfred Graham & Co. St. Andrew's Works, Crofton Park, S.E.4. Herewith a letter from these people, dated 18th inst. together with the leaflets therein referred to. I…

Scan096 Information on the sound travel distance of an Alfred Graham & Co. Electrical Autohorn.
View original record R.R. 235a (100 T) (S.H. 798. 10-12-20) G. 2948 X.4278 To Wd. from Hs. Hs3/LG23.2.21. X.4278 - Alfred Graham & Co. Electrical Autohorn. With reference to your Wd3/NJ21.2.21 and to the attached…

Scan097 Internal correspondence regarding the Alfred Graham & Co. Electrical Autohorn and a special polished aluminium model.
View original record Hs. from Wd. X 4278 Wd1/NJ.28.2.21. X.4278 - Alfred Graham & Co. Electrical Autohorn. With reference to yours Hs3/LG23.2.21, I return here-with above firm's letter of 18th inst. also a further letter…

Scan098 Correspondence regarding an Electrical Autohorn from Alfred Graham & Co.
View original record H.H. 235a (100 T) (S H. 798. 10-12-20) G. 2948 Hs. from Wd. X.4278 RECEIVED 1 MAR 1921 Wd6/NJ.3.3.21. X.4278 - Alfred Graham & Co. Electrical Autohorn. I confirm mine Wd1/NJ28.2.21 and give you below…

Scan099 Letter from Alfred Graham & Co. regarding the audibility of their 'Graham' Electrical Autohorn and arranging a visit.
View original record R.R. 295A (100 T) (S H. 798. 10-12-20) G. 2047 Hs. from Wd. X.4278 U. Wd2/NJ2.3.21. X.4278 - Alfred Graham & Co. Electrical Autohorn. Herewith a further letter from these people, dated 28th ult. (to…

Scan100 Correspondence with Alfred Graham & Co. regarding the supply and testing of Electrical Autohorns.
View original record H.H. Vals (100) S.H. 798 10-12-20) G. 2948 Hs. from Wd. MAR 8 - 1921 X4278 Wd4/NWJ10.3.21. X.4278 - Alfred Graham & Co. - Electrical Autohorn. Further to the visit which Mr.W.H.Lynas paid us on the…

Scan101 New all-aluminium electrical autohorn from supplier Alfred Graham & Co.
View original record R.R. 235a (100 T) (S.H. 798) 10-12-20. G. 2948 Hs. from Wd. c. to CO/Dn. X 4278 Wd8/NJ14.3.21. X.4278 - Alfred Graham & Co. Electrical Autohorn. Further to mine Wd4/NJ10.3.21, we are in receipt of a…

Scan102 Advertising brochure for the Graham Electrical Autohorn.
View original record THE GRAHAM AUTOHORN. The Horizontal Position of the Diaphragm avoids Fouling or Deterioration by Accumulation of Dirt, Dust or Water. Patentees and Sole Manufacturers: ALFRED GRAHAM & COMPANY (E. A.…

Scan103 Price list and particulars for various types of car horns and fittings.
View original record PRICE LIST AND PARTICULARS DESCRIPTION. LIST No. CODE WORD. PRICE. £ s. d. PER MEDIUM LENGTH HORN 6-VOLT - EH1 - SONSONETTE - 3 10 0 - Each 12-VOLT - EH1a - SONST LONG HORN TYPE (Recommended for…

Scan104 Advertisement for the 'Graham' Electrical Autohorn, a special model for motor car manufacturers.
View original record A.D. 11 THE “GRAHAM” ELECTRICAL AUTOHORN SPECIAL MODEL for Motor Car Manufacturers Embodying the advantageous features of the original Autohorn, a special model, for sale only to Motor Car…

Scan105 Leaflet detailing the features and manufacturers of the 'Graham' Autohorn.
View original record THE GRAHAM AUTOHORN ¶ Full particulars of the “Graham” Autohorn will be found in Booklet A.D.1, and it is to be understood the present design, which is supplied complete with push and length of…

Scan106 Long Aluminium Trumpet received from Alfred Graham & Co Ltd. for test purposes.
View original record X4278 [Stamp: REC'D MAR] Hs. X4278 Wd/AW1/W23321. 23rd March.1921. GRAHAM ELECTRICAL AUTOHORNS. Messrs. Alfred Graham & Co Ltd., despatched to us yesterday one long Aluminium Trumpet for Test…

Scan107 The failure of an Appollo horn on an experimental car and its replacement.
View original record X 4278 Mr. Hives from GWH. 6.4.21. X 2474 X.4278 APPOLLO HORN. This Horn was fitted to 2.EX Car on the 18th.Jan.21. and failed on the 5th. April.21. having been run 1,883 miles. A Graham horn has…

Scan108 Letter from Alfred Graham & Company regarding a delay in sending a Motor Driven Horn sample for testing.
View original record X4278 ALFRED GRAHAM & COMPANY E. A. GRAHAM MECHANICAL & ELECTRICAL ENGINEERS PATENTEES & MANUFACTURERS OF MOTOR CAR COMPONENTS & ACCESSORIES AUTOMOBILE DEPARTMENT Telegrams: NAVALHADA, BROCK, LONDON…

Scan109 Testing and reporting on 'Graham' Electrical Autohorns from Alfred Graham & Co.
View original record R.R. Pge (re F.) (S.H. 988. 22/2/21.) Bm. 598878. Hs. from Wd. S. to CO/Dm. X4278 Wd5/NJ30.9.21. X.4278 - Alfred Graham & Co. - Electrical Autohorns. Please refer to my notes Wd4/NJ10.3.21 and…

Scan110 Letter from Alfred Graham & Company following up on the testing of their 'Graham' Electrical Autohorns and suggesting an alternative model.
View original record ALFRED GRAHAM & COMPANY E. A. GRAHAM MECHANICAL & ELECTRICAL ENGINEERS PATENTEES & MANUFACTURERS OF MOTOR CAR COMPONENTS & ACCESSORIES [Logo text top left: THE BRITISH ENGINEERS ASSOCIATION] [Logo…

Scan111 Price list for 'Graham' electrical autohorns, special models in polished aluminium.
View original record "GRAHAM" ELECTRICAL AUTOHORNS SPECIAL MODELS IN POLISHED ALUMINIUM TABLE: MODEL | CIRCUIT | PRICE COLUMN REFERENCE | LIST NUMBER | CODE WORD | PRICES (1) HORN ONLY | (2) With PUSH and FLEXIBLE CORD |…

Scan112 Advertisement leaflet for the 'Graham' Electrical Autohorn.
View original record A SOUND PROPOSITION The “GRAHAM” Electrical Autohorn is a Motor Car Signal which effectively warns, but does not worry, scare or annoy. THE Autohorn is positively reliable, simple to install,…

Scan113 Receipt notification slip from 'ROY'.
View original record Hs. from ROY. ----------- December 19th.1922 X4278 Hs DEC 19 1922 RECEIVED

Scan114 Letter from Alfred Graham & Company regarding their new ability to supply the 'Graham-Sparton' electric horn.
View original record ALFRED GRAHAM & COMPANY E. A. GRAHAM MECHANICAL & ELECTRICAL ENGINEERS PATENTEES & MANUFACTURERS OF MOTOR CAR COMPONENTS & ACCESSORIES AUTOMOBILE DEPARTMENT Telegrams: NAVALHADA, BROCK, LONDON Cables:…

Scan115 Letter from Alfred Graham & Co. proposing a superior motor-driven warning horn for consideration, detailing its US production and sample delivery.
View original record Messrs. Rolls Royce Ltd., Careful examination and prolonged tests have proved to us that this Horn is infinitely superior electrically and mechanically to any other Motor Driven Warning Signal. In…

Scan116 American-made Sparton Horn and its proposed manufacture in the UK with English styling.
View original record X4278 Hs. from ROY. ROY2/MG30.12.22 Herewith example of the latest type Sparton Horn made in America, and of which they claim they are making some 3000 or more per day. The Graham Company, of London,…

Scan117 Requesting comments on a Sparton Horn sample submitted by the Graham Company.
View original record Y4228, Hs. from ROY. ROY11/MG23.2.23 Can you now let us have your comments on the SPARTON HORN submitted by the Graham Company, with any modifications you think should be embodied in the further…

Scan118 Letter from Alfred Graham & Company regarding a Sparton Motor Driven Horn and a proposal to submit a 12-volt Model AUM.
View original record ALFRED GRAHAM & COMPANY E. A. GRAHAM MECHANICAL & ELECTRICAL ENGINEERS PATENTEES & MANUFACTURERS OF MOTOR CAR COMPONENTS & ACCESSORIES AUTOMOBILE DEPARTMENT Telegrams: NAVALHADA, BROCK, LONDON Cables:…

Scan119 Letter from Alfred Graham & Company confirming an interview for Wednesday, June 6th.
View original record X4278 THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS THE MOTOR TRADE ASSOCIATION WEST-END SHOWROOMS: The Almpliphone Salon 25-26 SAVILE ROW, REGENT STREET, W.1. TELEGRAMS "SONALORA, PICCY, LONDON"…

Scan120 Letter to Messrs. Alfred Graham & Co. acknowledging receipt of a horn for testing.
View original record c. to Hs. (Letter from Messrs. A. Graham & Co.) XL4228 ENCLOSURE NO 372 "austro" RgS/W 8 December 1925. Messrs. Alfred Graham & Co., St. Andrew's Works, Crofton Park, LONDON, S.E.4. Dear Sirs, We have…

Scan121 Letter from Alfred Graham & Company regarding a Sparton horn for test purposes.
View original record THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS WEST-END SHOWROOMS: 25-26 SAVILE ROW, REGENT STREET, W.1. TELEPHONE: REGENT 1075. TELEGRAMS: "DONALGRA, PICCY, LONDON." The Algraphone Salons SOUTH-WEST…

Scan122 Promotional document for the Sparton S.O.S. and S.O.S. Junior horns.
View original record The New SPARTON SOS Jr SPARTON S.O.S. Junior. A smaller model, identical in mechanism and design. Price £3 - 17 - 6 SAFETY FIRST SOUND SPARTON The New SPARTON SOS horn

Scan123 Advertisement for 'The New Sparton SOS' car horn.
View original record The successful outcome of 25 years' effort to produce the perfect horn. Note simplicity of mechanism—double diaphragm operated by the simplest of make-and-break circuits. The New SPARTON SOS THIS Horn…

Scan124 Advertisement for the Sparton SOS motor horn, marketed as a Christmas gift.
View original record With thanks to W. Lester & Narodny The NEW NOTE in MOTOR HORNS! —and a new note in Christmas Gifts WHAT better Christmas present to your motoring friend than this latest and best of warning signals ?…

Scan125 Change from Klaxon rotary horns to buzzer-type horns, comparing Robert Bosch and Sparton models.
View original record To OY. from Hs. c. to Sg. c. to WOF. Y4278 3 Hs1/LG5.3.29. CHASSIS ALTERATION NO.7. HORN ON CYLINDER. X1069 Y4278 X7550 X1163 It is probable, in a short time, we shall depart from the Klaxon rotary…

Scan126 Request for a sample of a 12-volt Sparton S.O.S. Deluxe Horn for testing as a less raucous alternative to the Klaxon horn.
View original record ROY. from EFC. SPARTON S.O.S. Deluxe Horn. Some time ago we had one of these for test, the makers being Messrs. Alfred Graham & Co., St.Andrews Works, Crofton Park, London S.E.4. Now that we are again…

Scan127 Instructions and description for a Sparton SCS De Luxe Bugle Type Horn.
View original record RR 229 (150 BKS.) (DB 451-8-12-24) MP 306975 X.4278 ROLLS-ROYCE LTD. INSTRUCTIONS. To: F.S.C. Order No.: A.D. 30 Customer's No.: x Sparton SCS De Luxe Bugle Type Horn. This horn is constructed with a…

Scan128 Instructions detailing the electrical and acoustic properties of a horn.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 To________________ 19____ Order No._________________ Customer's No. __2__ resistance across it there being a pair of wires…

Scan129 Instruction and service reference booklet for a Sparton horn, including the guaranty.
View original record Guaranty Every part used in the assembly of the SPARTON is subjected to a series of most rigid inspection tests. The finished SPARTON is tested under more exacting conditions than possibly could occur…

Scan130 Care and maintenance instructions for Sparton Motorhorns, with a cutaway diagram.
View original record CARE OF SPARTON MOTORHORNS EXPLANATION—The quality of tone and length of service of Sparton Horns depends entirely on the care of them. To produce the distinctive SPARTON tone, it is necessary the…

Scan131 Installation instructions and important information for the Sparton SOS horn.
View original record X4278 READ CAREFULLY IMPORTANT INFORMATION FOR PURCHASER AND PERSON MAKING INSTALLATION OF SPARTON SOS HORN The Sparks-Withington Company, manufacturers of the SOS Horn, is particularly desirous that…

Scan132 Fitting of an electro buzzer versus a low note bulb horn for aesthetic and practical reasons.
View original record -SG- FROM R. Dry(BV.) (At Le Canadel.) C. to MGR. BY. C. BY. HS, USA. ELECTRO BUZZERS. X 4278 R2/M11.3.29. REC'D AT WW. 14.3.29. X 4278 Mr. Olley sends us a photograph of the above fixed on the…

Scan133 Sending a 'Sparton Bugle' back to the makers and refusing a 'Chime' version.
View original record Y.4278 Roy. from EFC. c. Despatch Stores EFC7/T22.3.29. We are sending into the Stores for return to the makers one Sparton Bugle. If the makers are thinking of sending to us a 'Chime' one, we do not…

Scan134 Letter regarding Chassis Alteration No.7, discussing the Sparton SOS deLuxe horn versus the Robt. Bosch model and justifying its placement on the cylinder head.
View original record YL278 ROLLS-ROYCE OF AMERICA, INC. SPRINGFIELD, MASS. OY3 March 28th, 1929. Mr. E. W. Hives, c - Mr. Sidgreaves Rolls Royce Ltd., Derby, England Dear Mr. Hives: Re CHASSIS ALTERNATION No.7 Re Horn…

Scan135 Query regarding the purchase of a Sparton S.O.S. De Luxe Horn retained for testing purposes.
View original record RAC's Office EFC. from Roy/Ms. X4278 ROY/MS4/P.23.5.29. SPARTON S.O.S. DE LUXE HORN. Yours EFC1/LG.6.3.29. In March last we obtained from Messrs Vandervell & Co.Ld. one Sparton Bugle Horn and one…

Scan136 Follow-up memo requesting a reply regarding the Sparton S.O.S. De Luxe Horn.
View original record X 4278. EFC. ROY/MS9/P.28.5.29. SPARTON S.O.S. DE LUXE HORN. Please let us have a reply to our memo ROY/MS4/P.23.5.29. with reference to the above. ROY. qm

Scan137 Return of an unsatisfactory Sparton S.O.S. De Luxe Horn.
View original record X4278. Roy/Ms. from EFC. EFC6/AD3.6.29. SPARTON S.O.S. DE LUXE HORN. Replying to your Roy/Ms4/P23.5.29, this horn has been considered unsatisfactory by the testers. Therefore we are desirous of…

Scan138 Test report on two makes of vibration type electric horns which were found to be unsatisfactory.
View original record X4278 To R. RG. Wor. BY. C. to E.F.C. Hs/AJL1/ALS.16.7.29 Vibration Type Electric Horns. X11636 We have tested two makes of the above type of electric horns and both were proved unsatisfactory.…

Scan139 Comparison between a post-war Bosch Magneto and a Watford Magneto, with a list of complaints about the latter.
View original record X.4279 To BY. From Hs. C. to Hd. hsl/LCS1.8.20. X 2375 RE WATFORD MAGNETOS. Y1020 X.4279 We should like you to write to the Watford people making known to them the following facts. We have tested a…

Scan140 Letter to North & Sons Ltd. comparing their 'Watford' magneto unfavourably with the German Bosch magneto.
View original record R.R. 258a. (10M T) S.H. 738. 10-12-20: G 2947 X 4279 c. Wd. c. EFC. c. Hs. By4/H1.9.20. September 1st, 1920. Messrs. North & Sons, Ltd., Whippendell Road, WATFORD. Dear Sirs, X.2375. RE "WATFORD"…

Scan141 Comparison between Bosch and Watford magnetos, outlining the superior qualities of the Bosch machine.
View original record -2- Contd. points and thereby obtain better running on the magneto ignition. 2. The silence of the Bosch machine is very much better than any Watford machine. We think that the Bosch has a definite…

Scan142 Letter from North & Sons Ltd. discussing the requirements for a new magneto, including spark gaps and armature design.
View original record X 4279 COPY. MESSRS. NORTH & SONS LTD., WHIPPENDALL ROAD., WATFORD. Your Ref. BY4/H1920. Our Ref. CHK/NS. 6th September 1920. Messrs. Rolls Royce Ltd., DERBY. Dear Sirs., X 2375 X 4279 X 4181 For the…

Scan143 Page 2 of a letter from North & Sons Ltd. regarding a wider machine and potential modifications.
View original record Messrs. Rolls Royce Ltd. - 2 - [STAMPED: RECEIVED] This will be a slightly wider machine, but we presume there will be no difficulty with regard to the fitting of this on your engines, and as soon as…

Scan144 Correspondence regarding weak points in a magneto from Messrs. Norths and the promise of an improvement.
View original record Hs. from EY. EP. EFC. c. Wd. X.4279 BY4/P7.9.20 X.2375 CHASSIS - MAGNETOS. X4279 With reference to the question of obtaining a better magneto from Messrs. Norths, I wrote them very definitely in…

Scan145 Letter to a supplier discussing the development of a new machine, emphasising the time factor and arranging a meeting.
View original record R.R. 836A (100 T) S.H. 728. 10-12-20. G 2947 X.4279. MADE AT CROXLEY September, 7th 1920. By5/P7.9.20. Messrs. North & Sons, Ltd., Whippendell Road, WATFORD. X.2375. X.4279. Dear Sirs, Referring to…

Scan146 Correspondence from North & Sons Ltd. regarding the development of a new model magneto with a larger armature.
View original record X.4279. NORTH & SONS LTD., WHIPPENDELL ROAD, WATFORD. Your ref. Ry5/P7.9.20. Our ref. CHK/MS. 10th Sept. 1920. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. X.2375. For the attention of Mr.…

Scan147 Letter from North & Sons Ltd. regarding the testing and supply of E.O.6 magnetos.
View original record X4279 NORTH & SONS. LTD. Whippendell Road, WATFORD. Your ref. EFC/T. Our ref. CHK/NS. 12th January, 1921. Messrs. Rolls-Royce, Ltd., Nightingale Road, DERBY. Dear Sirs, X4181 Re E.O.6 MAGNETOS. X4279…

Scan148 Letter to Messrs. North & Sons Ltd. regarding tests and required improvements for magnetos on R.R. Chassis.
View original record X.4279 c. Da. c. By: c. EP. EFC3/T. 9th March, 1921. Messrs. North & Sons Ltd., Whippendell Road, Watford. Dear Sirs, X.4181 Re Magnetos for R.R. Chassis. X 4279 With reference to the question of…

Scan149 Letter from North & Sons, Ltd. regarding the design and testing of E.O.6 magnetos.
View original record SPEEDOMETERS AND MAGNETOS. NORTH & SONS, LTD., WHIPPENDELL ROAD, WATFORD. TELEPHONES: LONDON 2833 CENTRAL. Works 622 & 623 WATFORD. TELEGRAMS: AEROMAGS OX LONDON. AEROMAGS, WATFORD. CONTRACTORS TO THE…

Scan150 Letter from North & Sons, Ltd. arranging the inspection of a sample machine.
View original record -2- Messrs. Rolls Royce Lt.., 11.8.41. of time which will be necessary, but no time will be lost as soon as the sample machine is ready our Mr. Allen will bring it to your works and submit it for your…

Scan151 Stating a preference to use German Robert Bosch, American Bosch, and Watford magnetos over other suppliers.
View original record X4279 To EFC. from R. c. to CJ. R2/G24.3.21. X.430. RE MAGNETOS. X.427. X.3716. X.4181. X.4279 We are not interested in any outside magnetos, so that you can concentrate on - German Robert Bosch.…

Scan152 Forwarding a letter regarding the large armature type magneto from Watford Magnetos and a recent works visit.
View original record W.B.H. (100 T) S.H. 798, 10-12-20. G. 2948 Hs. from Sd c. to EFC. c. to Da. c. to By. c. to Co/Dn. X4278 [Handwritten and crossed out] Hs MAR 22 1921 [Stamp] Wd7/NJ22.3.21. RECEIVED [Stamp] X.4279.…

Scan153 Letter from North & Sons, Ltd. regarding the progress and sample submission of a Large Armature Type Magneto.
View original record X.4279 COPY OF A LETTER RECEIVED FROM:- NORTH & SONS, LTD., WHIPPENDELL ROAD, WATFORD. Our Ref. CHK/NS. 21st March, 1921. Messrs. Rolls Royce Ltd., Nightingale Road, Derby. Dear Sirs, X.4279 Large…

Scan154 Timing, weight, and performance issues of Watford magnetos in comparison to Bosch and Conner models.
View original record To H. from EFC. c. to CJ. c. to K. X4279 EFC9/T8.4.21. X.430 - MAGNETOS - REF: E1/G31.3.21. X.2375 X3916 X4279 3917 "Have since noticed Watford (standard E6) appear to have their armatures wrongly…

Scan155 Letter from North & Sons, Ltd. regarding progress on a machine and arranging a meeting.
View original record X. 4279 SPEEDOMETERS AND MAGNETOS. NORTH & SONS, LTD., WHIPPENDELL ROAD, WATFORD. TELEPHONES: LONDON 2833 CENTRAL. Works 622 & 623 WATFORD. TELEGRAMS: AEROMAGS OX LONDON. AEROMAGS, WATFORD.…

Scan156 The second page of a letter regarding sending a copy to an alternative address to avoid postal delays.
View original record -2- Messrs. Rolls-Royce Ltd., 21.4.21. make quite sure, in view of the possibility of delay in the Post, we are sending a copy to St. Helen's Mill House, Abingdon. Yours faithfully,

Scan157 Magneto performance issues, specifically the influence of Lodge spark plugs on misfiring and the capabilities of Watford magnetos at slow speeds.
View original record To EFC. from R. c. to CJ. c. to Hs. c. to EP. c. to HM. S-4979 R15/G25.4.21. E.430. MAGNETOS. X.2375. X.1812. X.4181. X.4279. In PN's report (PN3/DN19.4.21) concerning Mr. Houdern, it will be noticed…

Scan158 Visit to magneto supplier Messrs. North regarding the exchange of E.6 magnetos and details of a new larger armature magneto design.
View original record X4279 Extract from EFC8/T6.5.21. RE VISIT TO MESSRS. NORTH (WATFORD MAGNETOS). X.4181. X.4279. The question was put to Messrs. North as to whether they would be prepared to exchange the E.6 magnetos…

Scan159 Magneto requirements for the 40/50 engine, comparing different types and analyzing spark plug performance.
View original record 4279 Extract from Hs1/LG5.5.21. X.430. MAGNETO REQUIREMENTS FOR 40/50 ENGINE. Recommendations. X.1812. X.3775. X.4181. X.4279. X.3413. X.4295. X.4196. During our tests we have proved that the Watford…

Scan160 Tests of ignition coils with varying numbers of secondary turns for magnetos.
View original record Hsl/LGS.5.21 -2- Contd. magneto, the less exacting are our plug requirements. During these tests we have carried out tests on the coils. We have tried coils with 14,000, 15,000 and 18,000 turns on the…

Scan161 Supply and exchange of Watford magnetos with North & Sons Ltd.
View original record EFC. from Wd. c. to CC/Dn. X4279 Wd8/NJ18.5.21. X.2375. X.4181 X.4279. WATFORD MAGNETOS. Upon receipt of yours EFC8/T6.5.21 I wrote North & Sons Ltd. remarking that you had reported that in addition…

Scan162 Correspondence regarding a sample E.L.O.6 magneto from North & Sons Ltd for testing.
View original record Hs. from Wd. c.to EFC. c.to By. c.to EP. c.to CO/Dn. X4279 Watford Magnetos. We are in receipt of a letter from North & Sons Ltd. dated 25th inst. stating that on 22nd inst. they sent us by passenger…

Scan163 Design, performance, and testing of a Watford magneto.
View original record X.4279. -1- X.430. FORM FOR RECORDING DETAILS OF MAGNETO DESIGN AND PERFORMANCE. Date:- 19.7.22. Magneto on test. Maker :- Watford. X. No. :- 4275. Type :- E.L.O.6. No :- 55044. (1) Weight in pounds.…

Scan164 Specifications for an ignition distributor, platinum point gap, and contact breaker timing.
View original record -2- Contd. (4) Length of h.t. safety gap (inches) :- .394 " " " " (mm) :- 10.0. (5) Distributor :- Total pitch :- 1.44" Conductor width :- .975" Brush width :- .20" Position of brush at break…

Scan165 Test report page detailing an endurance test, primary volt-speed curve, and primary ampere-speed curve for a component.
View original record -3- Contd. (7) Endurance test :- Fairly heavy tracking in the distributor. Black mark on each segment, corresponding to position of brush at retard. Particles of carbon in bottom of distributor.…

Scan166 Test report page detailing circuit tests, RPM tests, measurements, and handwritten notes on an advance and retard mechanism.
View original record -4- Contd. (10) Short circuit test :- O.K. (11) Open circuit test :- O.K. (12) Test at 1500 R.P.M. O.K. (13) (a) 6.75 m/m. (b) 6.75 m/m. (c) 6.5 m/m. (d) 4.0 m/m. (14). Advance and retard limited by…

Scan167 Test report on high and low speed sparking characteristics, and contact breaker performance.
View original record -5- Contd. (15) High speed sparking characteristics:- 1 Max regular sparking gaps for all speeds over 1500 r.p.m. (a) 5.3 m.m. (b) 6.5 m.m. (c) 7.75 m.m. 2 Each gap shorted in turn while varying the…

Scan168 List of electrical and mechanical specifications including resistance, current, point gaps and contact breaker timing.
View original record -6- Contd. (18) Primary resistance :- .73ω at 18°C. Inst 98. 1.5v range. " " " " 1.5amp " (19) Secondary resistance :- 3,980ω at 20°C Inst 98. 1.5v range " .22596.ma. " (20) Secondary milli-amperes :-…

Scan169 Specifications for platinum point gap, contact breaker timing, and armature core flux.
View original record -7- Contd. (22b) Platinum point gap :- "003" and "008" Contact breaker timing:- | | Make. | Break. | |-----|---------|----------| | A. | -87° | +71.5° | | R. | -26.5° | +131.5° | | | Retarded. |…

Scan170 The comparative tests of three magnetos: U.S.A. BOSCH ZR.6 ED.19, WATFORD EO6c, and WATFORD ELO.6.
View original record To R. from EFC. c. to CJ. c. to E. c. to PN. c. to Das c. to By. c. to EP. c. to EWT. for R.R. Inc. c. to Hs. X4279 EFC1/T31.7.22. X.3916. U.S.A. BOSCH ZR.6 ED.19 MAGNETO X.4181c. WATFORD EO6c MAGNETO…

Scan171 Report page comparing the specifications and test results of various Bosch and Watford magnetos.
View original record Contd. -2- EFC1/T31.7.22. (1) (The first magneto/referred to is the latest one from U.S.A. incorporating the latest modification to the armature and which we believe is representative of the standard…

Scan172 Comparison and specification report on various magneto models, including the ELO.6, EO6, and ZR.6.
View original record Contd. -3- EFC1/T31.7.22. to prevent the pull on the timing lever ring from being transmitted to the control lever. Further, the bush on the contact breaker lever is now made of continental bakelite.…

Scan173 Magneto distributor dimensions, platinum point gaps, and contact breaker timing.
View original record Contd. -4- EFC1/T31.7.22. The distributor dimensions we found to be as in the following sketch and table :- D or E Magneto. Conductor pitch. A Conductor Width. B Brush width. C Overlap at break…

Scan174 Test report on magneto timing, gaps, and endurance for various models.
View original record Contd. -5- EFCl/T31.7.22. armature is naturally held by the magnets) as the datum position, we found that in the advanced position of the lever the makes occurred 57.5°, 74.5° and 81.5° before this…

Scan175 Test report on magneto performance, detailing wear, tracking, and electrical test results.
View original record Contd. -6- EFC1/T31.7.22. towards the end of the test on 5.5 mm. gaps. There was rather heavy tracking in the distributor, and the contact breaker lever red fibre block had worn about .005". On the…

Scan176 Comparative tests on various magnetos, including spark gap and utility tests.
View original record Contd. -7- EFCl/T31.7.22. place on the safety gap of the magneto, also went through successfully on the two Watford magnetos, and was not carried out on the Bosch. (12) A short test of 15 minutes at…

Scan177 Test procedure for establishing the comparative high and low speed sparking characteristics of a ZR.6 machine.
View original record Contd. -8- EFC1/T31.7.22. Neither machine would appear from this to be as good as the Bosch when working on leaky plugs. (14) Range for comparative high speed and low speed Sparking Characteristics.…

Scan178 Magneto timing ranges and high-speed sparking characteristics for various models.
View original record Contd. -9- 34°, which amount of range is that required for our engine. This applies in the case of most magnetos, in which the best retarded position requires to be as advanced as possible, as better…

Scan179 Magneto spark gap performance at various speeds and timing settings for E.O.6c and ELO.6 machines.
View original record Contd. -10- EFC1/T31.7.22. At all speeds above 1500 R.P.M., with timing lever advanced, shorting any one gap extinguishes the spark immediately following. At central and retard the effect is not so…

Scan180 The low-speed sparking characteristics of various magnetos and drive types.
View original record Contd. -11- EFC1/T31.7.22. (16) Low Speed Sparking Characteristics (See p.2 re chain drive on this test). Speeds at which regular sparking occurred on 5.5 mm. gaps with (a) Fully advanced position)…

Scan181 Test results page comparing primary/secondary resistances and milli-amperes for various magnetos.
View original record Contd. -12- EFC1/T31.7.22. EO6c appear to be rather poor. This magneto seemed to be somewhat affected for the worse by the endurance test. (18) & (19) Primary and Secondary Resistances ZR.6 .34 ohm…

Scan182 Performance comparison graph of electrical components, plotting Amperes and Volts against RPM.
View original record S.C. AMPERES D.C. VOLTS. R P M AMPERES VOLTS WATFORD EL06 USA/Bosch ZR6 Ed 19 STD WATFORD E.O.6.(c)

Scan183 Faint typewritten internal document with a purple date stamp.
View original record RD. 2 - AUG. 1939 DERBY [Main body of text is illegible]

Scan184 Confirming an arrangement to fit a larger armature Watford magneto to a 40/50 chassis by creating a suitable base.
View original record X4279 To RHC. from EFC. c. Hs/Mr. Hancock. EFCl/T11.12.22. X.4279 - LARGER ARMATURE WATFORD MAGNETO This is to confirm that as arranged in conversation you will arrange for a suitable base to enable…

Scan185 Test report on a Watford Magneto with a larger armature for improved slow running.
View original record X.4279 Mr. Hives/Mr. Clark. from GWH. 28.3.23. X.4279 - Larger Armature - Watford Magneto. Magneto to give better slow running. This magneto (Type EL06 - No.5504) was fitted to 4.EX on the 2.2.23. It…

Scan186 Return of a tested Watford Magneto Type E.L.O.6 to its owner, Messrs. North & Sons.
View original record X4279 To Wd. from EFC. EFC2/T28.3.23. X. 4279 - WATFORD MAGNETO TYPE E.L.O.6 We are sending into the Stores, awaiting Order Office instructions, a Watford type E.L.O.6 magneto, No.55044. Our tests of…

Scan187 Returning a tested Watford type E.L.O.6 Magneto to Messrs. North & Sons Ltd.
View original record X4279 c. to Mr Chatwin. c. to EFC. Wd/Dm6/HP29.3.23 Please despatch by passenger train, carriage paid, to Messrs. North & Sons Ltd. Whippendell Road, Watford. Watford type E.L.O.6 Magneto No. 55044.…

Scan188 Announcement from Trojan Commercial Corporation regarding the Fan Flame Spark Plug.
View original record MYRON H. BEAUMONT PRESIDENT JOHN F. GORMAN VICE-PRESIDENT FREDERICK J. DAYIL SECRETARY-TREASURER Handwritten: X.4280 Handwritten: Leaflet in Box 10 TROJAN COMMERCIAL CORPORATION EXCLUSIVE EXPORT…

Scan189 Letter from the Trojan Commercial Corporation detailing pricing, packaging, and agency terms for their plugs.
View original record -2- The list price of #1 to 7 inclusive, being the 1/2", 7/8" and the metric Plugs, is $1.25 each; the 3/4" Plug, which is for tractors, is $2.00 each. The wholesale exclusive dealers' or agents'…

Scan190 Advertising leaflet for 'Fan Flame' spark plugs, detailing available sizes and prices.
View original record There is a size and type of FAN FLAME PLUG for every make of pleasure car, truck, tractor and motorcycle. 1/2-inch Standard 1/2-inch Long Metric 7/8-18 A. L. A. M (S. A. E.) 7/8-18 Long Price, $1.25…

Scan191 Promotional document featuring customer testimonials for 'FAN FLAME SPARK PLUGS'.
View original record READ THESE LETTERS. WE HAVE THOUSANDS MORE LIKE THEM. FAN FLAMES are so far ahead of all other spark plugs there is no comparison. E. A. WRIGHT. 4649 Garfield Ave., St. Louis, Mo. Mr. F. A. Blake, Los…

Scan192 Letter to Trojan Commercial Corporation requesting a sample of their Fan Flame Sparking Plugs for examination.
View original record X4280 W 25th. Nov. 1920. Trojan Commercial Corporation, Chamber of Commerce Building, 32 Court Street, Brooklyn, N.Y., U.S.A. For the attention of Mr. H. Beaumont. We are in receipt of your circular…

Scan193 Letter from the Trojan Commercial Corporation regarding a sample set of 'Fan Flame' spark plugs sent for testing.
View original record MYRON H. BEAUMONT PRESIDENT JOHN F. GORMAN VICE-PRESIDENT FREDERICK J. DAVIS SECRETARY-TREASURER JAMES CUNNINGHAM GENERAL MANAGER X4280 TROJAN COMMERCIAL CORPORATION EXCLUSIVE EXPORT REPRESENTATIVES…

Scan194 Follow-up letter from Trojan Commercial Corporation regarding 'Fan Flame' spark plugs sent for testing.
View original record MYRON H. BEAUMONT PRESIDENT JOHN F. GORMAN VICE-PRESIDENT FREDERICK J. DAVIS SECRETARY-TREASURER JAMES CUNNINGHAM GENERAL MANAGER X4280 TROJAN COMMERCIAL CORPORATION EXCLUSIVE EXPORT REPRESENTATIVES…

Scan195 Invoice from Trojan Commercial Corporation for the supply of 12 standard metric fan flame spark plugs.
View original record WE HEREBY GUARANTEE THAT THE GOODS INVOICED HEREON WERE MANUFACTURED IN ACCORDANCE WITH THE FEDERAL CHILD LABOR ACT OF SEPTEMBER 1ST, 1916. - TROJAN COMMERCIAL CORPORATION. X.4280 TROJAN COMMERCIAL…

Scan196 Telegram from Brooklyn, NY, with a coded message regarding 'Fanflame Sparkplugs'.
View original record POST OFFICE TELEGRAPHS Reference: X4280 No. of Telegram: 0001 Office Stamp: DERBY * 25 FE 21 Handed in at: Brooklyn NY Received here at: 4.10am To: Roycar Derby Message: Efuwfeoynf "Fanflame…

Scan197 Methodology for testing various makes of sparking plugs.
View original record WR.232A (100T) ... From Hs. c. to GJ. c. to Bn. S: to Da. c. to Ry. c. to EP. c. to EWI. for R.R.Inc. X.4280 COPY. He5/LC9.2.21. X.4280 X.1812 - TESTS ON SPARKING PLUGS. X.4280. X.390.5 X.4196.…

Scan198 Test report comparing the performance of various spark plugs.
View original record -2- HS5/LG9.2.21. Type of plug. | No. tested. | Test 1. | Test 2. | Test 3. | Test 4. | Test 5. | Remarks. ---|---|---|---|---|---|---|--- Bethlehem U.S.A. | 12 | O.K. | O.K. | O.K. | failed. | O.K. |…

Scan199 Report comparing and recommending spark plugs, specifically Mercury, Champion, and Bethlehem brands.
View original record R.H. 8284 (100 T) S.H. 728 10-12-20) G 2947 Contd. -3- Hs5/LG9.2.21. From the results of these tests we place the - Mercury plug the first Champion U.S.A. plug the second and the Bethlehem U.S.A. plug…

Scan200 Letter from Trojan Commercial Corporation following up on an offer for the exclusive agency of 'Fan Flame' spark plugs in England.
View original record MYRON H. BEAUMONT PRESIDENT JOHN F. GORMAN VICE-PRESIDENT FREDERICK J. DAVIS SECRETARY-TREASURER JAMES CUNNINGHAM GENERAL MANAGER TROJAN COMMERCIAL CORPORATION EXCLUSIVE EXPORT REPRESENTATIVES FOR…

Scan201 Translation of a coded cable message using the A.B.C. 5th Edition code.
View original record E C TROJAN COMMERCIAL CORPORATION. 52 COURT STREET, BROOKLYN, N.Y. CABLE ADDRESS: "TROCOMCORP - NEW YORK" TRANSLATION OF CABLE RECEIVED FROM - SENT TO MESSRS. Rolls-Royce Motor Car Co. OF Derby,…

Scan202 Instructions for a Bosch Trembler Ignition Coil GZ4.
View original record R.R. 300 (120B) (SF 349 24-1-19) MP 200552 X.4281 88300 ROLLS-ROYCE LIMITED. INSTRUCTIONS. 23 March 1921 To: EFC. Order No: AA52. Customer's No: 1 Re: X 4281 Bosch Trembler Ignition Coil GZ4. This…

Scan203 Instructions detailing the construction of a coil and condenser assembly.
View original record ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 2. Re The condenser is circular and has terminals at a hole in the centre. At the other end of the coil is a fibre plate in which four…

Scan204 Instructions for the operation of a switching mechanism and its components.
View original record RR 300 (120B) (SF 349 24-1-(9) MP 200552) 88302 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 3 Re 19 against these switch arms. The other end of the cylinder is closed by a heavy…

Scan205 Inspection notes on a vehicle's ignition system, detailing coil and magneto conditions.
View original record RR 300 (120B) (SF 349 24-1-19) MP 200552 88303 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To Order No Customer's No. 4. Re 19 ② Battery connected to coil and magneto battery terminal ready for being connected…

Scan206 Wiring diagram for a Bosch GZA Trembler Ignition Coil.
View original record XA281. Connections of Bosch GZA. Trembler Ignition Coil .164mf. Primary .67ω. Secondary 2,640 ω. E 6 1 2 5 4 to. H.T. Magneto FGA

Scan207 Production tests for a motor and reduction gear, detailing the light test procedure.
View original record U.S.A. 28.8.19. X.1627 - PRODUCTION TESTS OF R.R. MOTOR & X.3082 - REDUCTION GEAR. ---------------------------- TEST 1. LIGHT TEST. The motor and gear shall be run light for a period of half an hour…

Scan208 Pencil sketch of a steering wheel mechanism, possibly for a horn or self-cancelling indicator, incorporating springs and electrical contacts.
View original record Handwritten on drawing: G.H.T. Note: The majority of the text is a mirrored carbon copy bleeding through from the reverse side of the page and appears to be a report on brake lining tests, unrelated…

Scan209 Instructions for creating Goshawk 11 combustion space models and details on piston modifications for Mr. Royce's inspection.
View original record Contd. -2- It was thought also that the mouth of the combustion space might be machined to a depth of about .300". This method of treating the combustion space is different to that specified for the…

Scan210 Request to obtain an R. Bosch TA.12 ignition coil with condenser for examination.
View original record X4281 Roy. from EFC. EFC5/AD26.11.29. X.4281. R. BOSCH IGNITION COIL. Referring to the letter and particulars sent to us by Messrs. J.A. Stevens Ltd. will you please obtain for us for examination, one…

Scan211 Letter from American Bosch Magneto Corporation regarding sample magnetos and ignition system components.
View original record E R 88a (100 T) (S H. 768, 10-12-20) G 1947 X4285 AMERICAN BOSCH MAGNETO CORPORATION, SPRINGFIELD, MASS. January 12, 1921. L. W. Rosenthal. Rolls-Royce Company, Springfield, Mass., Attention of Mr.…

Scan212 Letter from Rolls-Royce of America concerning changes to the American Bosch Magneto DUZ-6 model.
View original record R.R. USA (100 T) (S.H. T9S, 10-12-20) G. 9947 X.4286 March 4th 1921. Oy/2/G4321. ROLLS-ROYCE OF AMERICA INC., SPRINGFIELD, MASS. Dear Hives:- X.3916. Re American Bosch Magnetos. X.4285. The American…

Scan213 Forwarding a copy of a letter from America concerning American Bosch Battery Ignition.
View original record EWT. to Hs. EWT/HJC7/G13.4.21. X.4285 Re: American Bosch Battery Ignition. Attached hereto, for your information, is copy of letter reference Cy5-G23321, addressed to CJ. from America. A copy of the…

Scan214 Letter clarifying the material composition of a contact breaker for an American Bosch Battery Ignition system.
View original record Oy5 - G 25321 March 25, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention: Messrs. F.H. Royce and Hives. Dear Sir:- X.4285. Re: American Bosch Battery Ignition…

Scan215 Covering letter for a preliminary report on a U.S.A. Bosch Type D.U.Z.6 Magneto.
View original record X4285 To R. & E. from EPC. c. to CJ. & PH. c. to By. & Bn. c. to Da. & EP. c. to EWT. for R.R.Inc. EPC8/T15.4.21. X.4285 - U.S.A. BOSCH TYPE D.U.Z.6 MAGNETO. Herewith please receive copy of my…

Scan216 Preliminary report on the U.S.A. Bosch Magneto D.U.Z.6, comparing it to the Z.R.6 model.
View original record EFC. P.A.73. 91298. March 30th 1921. X.4285 - PRELIMINARY REPORT ON U.S.A. BOSCH MAGNETO D.U.Z.6. As far as can be seen, there is little difference between this machine and the type Z.R.6 U.S.A.…

Scan217 Disassembled U.S.A. Bosch Type ZR.6 magneto and a request for another for testing, plus parts for other magnetos.
View original record EWT. For CY. from EFC. X.4285. EFC1/T15.4.21. X.3916 - U.S.A. BOSCH TYPE ZR.6 MAGNETO. X.4285. Apparently Mr. Hives only brought back with him one U.S.A. Bosch ZR.6 magneto of the latest type, and…

Scan218 Form for recording details of magneto design and performance for a U.S.A. Bosch D.U.Z.6.
View original record R.R. 235A (100 T) S.H. 798 10-12-20: G. 2947 X. 4285. -1- X.430. FORM FOR RECORDING DETAILS OF MAGNETO DESIGN AND PERFORMANCE. Date :- April 20th 21. Magneto on test. Maker :- U.S.A. Bosch. X. No. :-…

Scan219 Specification sheet for ignition system components and timing.
View original record -2- Contd. (4) Length of h.t. safety gap (inches) :- .335 * * * * * (mm) :- 8.5 (5) Distributor :- Total pitch :- 1.477" Conductor width :- .895" Brush width :- .300" Position of brush at break…

Scan220 Endurance test results showing a seized distributor gear bearing, with primary volt-speed and ampere-speed curve data.
View original record R.R. 2544 (100 T) S.H. 728. 10-12-26. G. 2947 -3- Contd. (7) Endurance test :- After 10.5 hrs running, distributor gear bearing seized. Distinct signs of tracking. Fairly heavy tracking of…

Scan221 Page of test results including circuit tests, RPM test, measurements, and handwritten notes on timing advance and retard.
View original record -4- Contd. (10) Short circuit test :- O.K. (11) Open circuit test :- O.K. (12) Test at 1500 R.P.M. O.K. (13) (a) 8.5 m/m (b) 8.5 m/m (c) 8.0 m/m (d) 7.0 m/m (14). Our advance the same as maker's. Our…

Scan222 High and low-speed sparking characteristics and contact breaker performance.
View original record R.R. 235A (100 T). S.H. 798. 10-12-20. G. 2947 -5- Contd. (15) High speed sparking characteristics :- Max gap for (a) 7.2 m m. all high (b) 7.4 m m. } Missing occurs on longer gaps. speeds. (c) 7.4 m…

Scan223 Technical data sheet detailing resistance values, point gaps, and contact breaker timings.
View original record R.R. B&S (100 T) S.H. 738. 10-12-20. G. 2947 -6- Contd. (18) Primary resistance :- '40 ω at 18°C. Inst 42. 1.5 volt range. 1.5 amp range. (19) Secondary resistance :- 3,200 ω at 12°C. Inst 42. 15 volt…

Scan224 Specifications for platinum point gap, contact breaker timing, and armature core flux.
View original record R.R. 255A. (100 T) R.H. 798. 10-12-20. G. 2947 (7). Contd. (2Eb) Platinum point gap :- .012" Contact breaker timing :- Make. Break. Retarded. Advanced. A. -55° +104° Make. 160° 126° R -20.5 139°…

Scan225 Letter from the American branch requesting an order for spare magneto parts and fittings.
View original record X4285 Oy6 - G 2521 May 2, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Attention; Mr. M.F.Clarke. Dear Sir:- X 3915 X 4285 Re: U.S.A.Bosch Magneto COPY With reference…

Scan226 Letter discussing issues and tests with American Bosch Magnetos.
View original record R.R. 238A (100 T) (S.H. 703. 10-13-20) G 2547 X4285 ROLLS ROYCE OF AMERICA INC., SPRINGFIELD, MASS. May 4th 1921. Cy11/G4521. Dear Hives: X.3916 X.3917 Re: American Bosch Magnetos. X.4285. I have now…

Scan227 Technical discussion on Bosch magneto and armature specifications, including performance graphs and material composition.
View original record Oyll/G4521 - Contd. -2- May 4th 1921. On taking this matter up with the Bosch Company, they say that they have made an error in giving us the E.D.18 magneto with what is known as the N.B. armature.…

Scan228 To Mr Hives discussing magneto test results, defects in American Bosch magnetos, and proposed modifications.
View original record Oyll-G4521. -3- May 4, 1921. Mr Hives The first curve which I give you above is from an actual test taken this morning on the magneto we are sending on 4-EX. It was taken this morning after 2 hours…

Scan229 The experimental bench tests of a U.S.A. Bosch Magneto, type D.U.Z.6.
View original record X4285 EFC4/T4.5.21. R.R. 552A (100 T) S.H. 793. 10-12-20) G. 2047 To R & E. from EFC. c. CJ & PN. c. Da. & EP. c. By. & Bn. c. EWT. for R.R.Inc. X.4285 U.S.A. BOSCH MAGNETO TYPE D.U.Z.6. Report on…

Scan230 Test report on electrical components, including distributor dimensions, platinum point gap, and endurance test results.
View original record H.Q. 232A (100 T/S) H. 768. 10-12-20: G: 2047 Contd. -2- (2) For remarks re mechanical and electrical design see preliminary report. (3) The radial air gap was unobtainable. (4) H.T. safety gap 8.5…

Scan231 Test report page detailing performance, short circuit, and utility tests conducted on a magneto component.
View original record H.H. & Co. (100 T) S.H. 768. 10-12-20) G. 2947 Contd. -3- EFC4/T4.5.21. fairly heavy tracking of the contact breaker earthing brush. The contact points were slightly blackened round the edge. After…

Scan232 Performance test report detailing high and low speed sparking characteristics, resistance, and current output.
View original record Contd. -4- (15) High Speed Sparking Characteristics. Regular sparking took place at all high speeds up to 3500 on 7.2 mm. gaps, for all positions of the timing lever (on our range). With lever…

Scan233 Requesting an order be forwarded for U.S.A. Bosch magnetos and related spare parts.
View original record To Wd. from EFC. X4280 EFCl/T21.5.21. X.3916 - U.S.A. BOSCH MAGNETOS. X4285 With reference to the attached extract from our letter EFCl/T15.4.21 and copy of Mr. Olley's memo Qy6-G2521, we should be…

Scan234 Correspondence from America concerning U.S.H. Bosch Magnetos and related breakdowns.
View original record RR 238 (500 Bks.) (SF 152. 6-11-18.) MP 197880 X.4285 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.E.C 1. Date June 9th 1921 Order No P.B. 3. Customer's No. X 430. X.3916 Report on Correspondence from…

Scan235 Instructions regarding the breakdown and replacement parts for various types of magnetos.
View original record RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.C. 2. Date: June 9th 1921 Order No. P.B.3. Customer's No. * 430. Confirming this. The breakdown of the E.M.Z.C.…

Scan236 Instructions regarding a fibre bush and magneto failure on customer car X 430.
View original record RR 238 (300 Bks.) (SF 152. 6-11-18.) MP 197880 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.F.G. 3. Date: June 9th 1921 Order No P.B. 3 Customer's No. X 430. that the fibre bush works loose on the liner,…

Scan237 Letter from Rolls-Royce of America regarding payment for a Magneto and Battery System taken by Mr. Hives from Springfield to Derby.
View original record X .4285 RECEIVED June 20 1921. Ref: NHM-3650. X 4285 X 4275 Mr. C. Johnson, Managing Director, Rolls-Royce, Ltd., London, England. COPY Dear Sir: Attention - Mr. Hives. At the time Mr. Hives left…

Scan238 Letter from Rolls-Royce of America correcting the addressee of a previously sent document concerning American Bosch Battery Ignition.
View original record X. 4285 Oyl2 - G 3821 August 3, 1921 Mr. Claude Johnson, Managing Director, Rolls-Royce Ltd., London, England. Dear Sir:- X.4285 Re: American Bosch Battery Ignition Oyl - G 18721 Please note that…

Scan239 List of R. Bosch and U.S.A. Bosch magnetos in the laboratory with condition remarks.
View original record X 4285 18.9.23. X.427. X.3916. X.4285. LIST OF R. BOSCH AND U.S.A. BOSCH MAGNETOS IN LABORATORY. Name and Type. Number. Remarks. R.Bosch. Disposed of ZR.6. 1323138. One distributor securing strap…

Scan240 Complaints about condenser cover bolts chafing plates and a proposed design modification to fix the issue.
View original record X 4286 To Da. from EFC. c. Da/Thr. c. Ey. c. EP. EFC1/T22.11.20. X.2512 - CONDENSER COVER. X4286 We have received complaints from the Test Dept. that it sometimes happens in taking off and replacing…

Scan241 Suggesting modifications to the condenser studs, nuts, and earth terminal plate for 40/50 chassis.
View original record To By. from Da. c. to HS. (1 print). c. to TB. (1 " ) c. to RHC.(1 " ) c. to EFC.( ) X.4286. Da8/CB4.2.21. X.4286 - RE CONDENSER - 40/50 CHASSIS X.2512. X.4054. In view of the difficulty experienced…

Scan242 Modification to the condenser box studways.
View original record X 4286 10.3.21. X.4286 - MODIFICATION TO CONDENSER BOX STUDWAYS. The instructioning of this experiment is included in that of the improved method of connection of earthed side of condenser to chassis…

Scan243 Re-standardisation of a 40/50 HP condenser, focusing on a new earth connection and stud design.
View original record To HS. from E. Copy to OJ. " " EPC. " " DA. " " DY. X 4286 E1/G25/8/21. X4054 RE STANDARDISATION OF 40/50 H.P. CONDENSER WITH NEW TYPE EARTH CONNECTION. X4286 Referring to the model which you brought…

Scan244 Cover note regarding modifications to the flexible condenser earthing connection.
View original record To Da/Thr. From EFC. X4286 EFC2/T1.7.21. X.4054 - FLEXIBLE CONDENSER EARTHING CONNECTION. X4286 We send you herewith copies of E1/G25.6.21 and E7/G23.6.21 in connection with the above. Perhaps you…

Scan245 Series of questions comparing the use and properties of insulating materials like Bakelite, Micanite, Vulcanite, and Stabalite.
View original record H.R. 936A (100 T). S.H. 798. 10-12-20. G. 1947 X.4287 EFC/T3.3.21. X.1109 - INSULATING MATERIALS. 1. Can Bakelite in the form of sheets be used in place of Micanite ? Ref. Nos. X.4285 - Bakelite…

Scan246 Visit to the Watford Magneto Company regarding their insulation materials and moulding processes.
View original record X.4287 To R. from Hs. c. to CJ. c. to BN c. to E. c. to Da. c. to BY. c. to Wor. c. to Wd. Hs1/LG15.3.21. X.1109 X.2494 INSULATION MATERIALS. X.800 X.4287 X.3513 X.2505 On our way back to Derby…

Scan247 The moulding processes and materials such as Beldalite, ebonite, and Bakelite.
View original record Contd. -2- Hsl/L.G15.3.21. ------------- they remove it from the die after 35 minutes baking, is so as to reduce the number of dies required. The material has set by that time and can be finished…

Scan248 Manufacturing processes, including moulding materials like Bakelite and testing American Bosch Magnetos.
View original record Contd. -3- They make their own drop forgings, both steel and brass, and also their own castings. They had some very nice handy machines for winding armatures. We arranged with them that we would send…

Scan249 Use of moulded insulating materials like bakelite and stabalite for electrical components.
View original record X.4287 To EFC. from R. c. to CJ. c. to Wor. c. to PN. c. to He. c. to Hy. c. to Wd. c. to Works Committee. R6/U15.3.21. X.1698 RR ELECTRICAL DEPARTMENT. X.3513. X.2494. X.1109. X.2505. X.4287. Though…

Scan250 Material choices like bakelite, ebonite and porcelain for the electrical department.
View original record Contd. -2- R6/G15.3.21. (3) That we should avoid the use of ebonite almost entirely if mouldings made in bakelite are available, the disadvantage of the ebonite being that it is easily distorted when…

Scan251 Manufacturing procedures, comparing US and UK practices, and advocating for the in-house production of specific electrical components.
View original record R6/G15.3:21. -3- Contd. only, and avoid entirely a staff of fitters. It must be a question of expert tool-makers, semi-skilled machine hands and assemblers. We must thank Mr. Hives for pointing out…

Scan252 Adoption of Bakelite insulating material and a proposal to manufacture parts under license.
View original record X4287 To R.R. of American Inc. (For the attention of CY). from R. c. CJ. c. Wor. c. Hs. c. By. c. EFC. R4/G18.3.21. X.1109 X.3513. RE INSULATING MATERIAL. X.4287. X.2494. You will see from recent…

Scan253 The suitability of materials like Bakelite and Stabalite for electrical components.
View original record Contd. -2- R4/G18.3.21. I did not know that I had to trouble you or myself in this matter, as I thought our people at Derby were obtaining such parts O.K., but I find from the very high cost of our…

Scan254 Requesting the procurement of sample sheets and bushes of various moulded insulation materials.
View original record Wd/Ms. from EFC. c. Wd. c. Da. X.4287. EFC3/T8.4.21. X.2494 - MOULDED INSULATION. X.3513. X.4287. In accordance with Mr. Royce's instructions, it will be necessary to procure sample sheets and bushes…

Scan255 Request to obtain samples of various moulded insulating materials from a list of suppliers.
View original record To Wd. from EFC. c. EWL. EFC2/T13.4.21. X.2494 - MOULDED INSULATING MATERIALS. X4361 X4377 X3613 We should be glad if you could obtain for us sample moulded insulation materials. The samples should be…

Scan256 Page 2 of a memo regarding a potential supplier for the raw material 'Condensite'.
View original record Contd. -2- EFC2/T13.4.21. of America, Bloomfield, N.J. This firm, we understand, would be prepared to supply the raw material. Perhaps EWT. would write to Mr. Olley in connection with "Condensite".…

Scan257 Letter from The Beldam Tyre Co. Ltd. concerning a sample of 'Beldalite' insulating material.
View original record X.4287 COPY OF LETTER RECEIVED FROM THE BELDAM TYRE CO. LTD., Windmill road, Brentford, Middx. VB/WG. 1st. August, 1919. Messrs. Rolls-Royce, Ltd., Nightingale Road, Derby. for the attention of Mr.…

Scan258 Introducing Stabilite moulding for switch barrels to save time and money.
View original record To HS. from R. Copy to [strikethrough]CJ[/strikethrough] " " [strikethrough]WOR[/strikethrough] " " [strikethrough]EFG.[/strikethrough] X428Y R7/G14/4/21. X4287 RE STABILITE MOULDING OF SWITCH BARREL.…

Scan259 Confirming receipt of letters and sending samples of 'Solidite' and 'Beldalite' moulded insulating materials.
View original record X.4287. EFC. from Wd. Wd13/NJ27.4.21. X.2494- MOULDED INSULATING MATERIALS, X.4287. I confirm mine Wd9/NJ25.4.21. With further reference to yours EFC2/T13.4.21. I send you herewith copies of letters…

Scan260 Letter from The Beldam Tyre Co (1920) Ltd regarding sending samples of 'Beldalite'.
View original record X. 4287 COPY OF LETTER RECEIVED FROM:- THE BELDAM TYRE CO(1920) LTD., Windmill Road, Brentford, MIDDLESEX. VB/WG. Messrs Rolls Royce, Ltd., 25th. April 1921. Nightingale Road, D E R B Y. Dear Sirs,…

Scan261 Visit to Messrs. North & Sons in Watford, discussing their machining and moulding processes and materials.
View original record X. 4287. -3- Contd. EJB1/LMG2.5.21. X. 1699 . X 3513 X 4287 THURSDAY - at Messrs. North & Sons Watford. It is interesting to note that this firm appear to find it cheaper and better to use sand…

Scan262 Correspondence regarding samples of the moulded insulating material, Beldalite.
View original record EFC. from Wd. X.4287 Wd5/NJ18.5.21. X.4287 Beldalite X.2494 - Moulded Insulating Materials. Please refer to mine Wd13/NJ27.4.21, with which I sent you 7 samples of "Beldalite". Below I give you copy…

Scan263 Comparative loading tests of Stabalite and Beldalite at various temperatures.
View original record X.4287. Extract from EFC2/T30.1.23. (X.1109) (3) Comparative loading tests of Stabalite and Beldalite at various temperatures. Exactly similar test pieces in stabalite and beldalite were used, the…

Scan264 Failures in Exide batteries and ongoing tests with other battery types.
View original record X.4288 COPY. To R. from EFC. c. to CJ. c. to E. c. to PN. c. to Bn. c. to Da. c. to EP. c. to Ry. c. to EWT. for R.R. Inc. EFC4/T7.2.21. X.654. BATTERIES - GENERAL. X.607. X.1198. X.979. I have your…

Scan265 Technical discussion on different types of batteries, their components like separators, and potential new standards.
View original record Contd. -2- EFC4/T7.2.2.21. reliability and efficiency and it is considered that it may be desirable to standardise these as a second source of supply, it having been decided, we understand, that in…

Scan266 Latest improvements in Tudor and British Exide batteries.
View original record X.4288 EFC3/17.3.21. To R & E. from EFC. c. to CJ. & PN. c. to Hy. & Dn. c. to De. & EF. c. to WML. for R.H. Inc. X.664 - BATTERIES. Further to our EFC7/T18.2.21 and with further reference to your…

Scan267 Modifications to batteries and an examination of a Tudor battery.
View original record Contd. -2- RFC3/T7.3.21. 3. The wood separators have been made larger so as to project beyond the edges of the plates and it is now considered that this will render the possibility of short circuits…

Scan268 The construction of a battery, detailing its grids, separators, vents, terminals, and casing.
View original record Contd. -3- EFC3/T7.3.21. as in a previous battery we received. 3. There is rather more metal in the positive grids than previously, the idea being to give greater robustness at the sacrifice of a…

Scan269 Report comparing Exide and De Martis batteries, detailing their features and performance claims.
View original record Contd. -4- EFC3/T7.3.21. We think that both this battery and the new Exide battery should give very good results in service, eliminating entirely, we anticipate, the short circuit failures due to…

Scan270 Investigation report on a battery, detailing its construction and performance compared to a standard Exide battery.
View original record Contd. -5- All this sounds like a fairy-tale, but if there is only a small portion of truth in their claims, we have considered it decidedly worth our while investigating this battery. The battery…

Scan271 Listing the weights of various batteries and the capacity of the De Martis battery.
View original record Contd. -6- EFC3/T7.3.21. The weights of these batteries are as follows :- Improved British Exide - 79 1/2 lbs. R.R. Tudor. - 90 lbs. U.S.A. Exide. - 85 1/2 lbs. De Martis. - 76 1/2 lbs. The rated…

Scan272 The weights of various types of batteries.
View original record X.4288 95173. 7.3.21. FD.47. EFC. X.664 - BATTERIES X.979. X.1723. X.4206. X.4288. X.3629. WEIGHTS. U.S.A. Exide 85.5 lbs. Special Chloride with pitched-in cells. 79.5 lbs. De Martis. 76.5 lbs. R.R.…

Scan273 Request for cost particulars of several new sample batteries for a report being prepared for Mr. Royce.
View original record R.R. 526A. (10M T) S.H. 798. 10-12-20: G. 7947 X.4288 To Wd. from EFC. c. Wd/Ms. EFC1/T7.3.21. X.664 - BATTERIES - GENERAL. X.4288. X.979. X.3629. X.4206. X.1198. We should be glad if you could let us…

Scan274 Costs and status of five different experimental batteries.
View original record X 4288 To R. from EFC. c. to CJ & PN. c. to By. & Bn. c. to Da. & EP. c. to EWI. for R.R.Inc. EFC2/T10.3.21. X.664 - BATTERIES. X.3629. X.979. X.4258. X.1198. Further to our EFC3/T7.3.21, we have now…

Scan275 Test report detailing the charging and discharging treatment of a car battery.
View original record X 4288 ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. FORM A. Date:- 8.3.26. Battery under treatment: Special Chloride A+ Slotted Ebonite Separators & pitched in cells Rated capacity:- 55.0.…

Scan276 Log sheet for a battery's second charge cycle and discharge performance test.
View original record R.R. 986A (100 T) (S.G. 643. 19-2-20) G. 1018. Contd. -2- Date:- (6) Second Charge :- Amperes from to Hours Amp.Hours. 6.0 3.30 5.30 2.0 12.0 16-3-21 6.0 8.0 5.30 9.5 57.0 17-3-21 4.0 8.0 5.30 9.5…

Scan277 Test report detailing battery charge, discharge, and cell density readings.
View original record -2- Contd. Date:- (11) Cell densities :- Not (1) Sufficient-(4) acid above plates to (5) get density readings )12) Third charge equivalent to average current of 5.0 amperes for 20 hours. i.e.…

Scan278 Test report logging battery cell densities and charge characteristics.
View original record -4- Contd. (14) Cell densities. (1) 1100 (4) 1100 (2) 1100 (5) 1100 (3) 1100 (6) 1100 (15) Fourth charge equivalent to average current of 5.0 amperes for 20. hours i.e. 100. ampere-hours. Cell…

Scan279 Extract from a report on a visit discussing battery designs, condemning the Tudor model in favour of the Exide.
View original record X4288 Extract from E4/G31.3.21. Re MESSRS. HIVES & DAY'S VISIT TO W.W. ON 6-EX 12th MARCH 1921. (17) BATTERIES. X.664. X.979. X.4288. X.4283. X.3629, The scheme whereby the battery is composed of…

Scan280 Extract from a letter from Chloride Elec Storage Co. regarding the weight of battery sets.
View original record X. 4288. Extract from letter from Chloride Elec Storage Co. 1.4.21. Mr. Furner raised the question of the weight of the sets we are now supplying, which are slightly less than those of the older…

Scan281 Standardisation sheet for an Exide 6 EXE 5 battery with independently supported elements.
View original record To R from EFC. CJ. & BJ. X 4288 EFC2/T5.4.21. X.4288 - EXIDE 6 EXE 5 BATTERY WITH INDEPENDENTLY SUPPORTED POSITIVE AND NEGATIVE ELEMENTS. Herewith standardisation sheet for the above. Will you kindly…

Scan282 Relaying Mr. Royce's remarks on a standardisation sheet for an Exide battery with independently supported elements.
View original record X4255 To EFC. from Rs. Rel/G11/4/21. X.4288 - EXIDE 6 BXE 5 BATTERY WITH INDEPENDENTLY SUPPORTED POSITIVE AND NEGATIVE ELEMENTS. I return herewith standardisation sheet for the above, upon which Mr.…

Scan283 Letter concerning the delivery of battery cells and issues with a new batch of experimental chassis batteries.
View original record X.4258. 11, Madeley Street, Derby. April 14th, 1921. Mr. Greenhalgh, 32, Addison Road, Kings Heath, Birmingham. Dear Mr.Greenhalgh, I received yesterday the case of 12 & BXH 4 cells, six of which were…

Scan284 Letter discussing issues with battery sealing compound, cracking, and electrolyte leakage.
View original record -2- Contd. 14.4.21. and cracks. If cracks develop in the sealing compound as they have done to a considerable extent in one of the batteries, the electrolyte sometimes has a habit of creeping out…

Scan285 Letter from The Chloride Electrical Storage Co. Ltd. regarding the supply and approval of sample batteries.
View original record X 4288 THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEGRAMS: CHLORIDIC. PENDLEHURST. TELEPHONES: 1638. CENTRAL MANCHESTER. 11. PENDLETON LONDON OFFICE, 39, VICTORIA STREET, S.W. A1, A.B.C. (4th &…

Scan286 The standardisation and supply of an Exide 6 BXE5 battery with independently supported plates.
View original record R.R. 235a (100 T) (S.H. 798, 10-12-20) G. 2948 X.4288 EFC1/T27.4.21. To R. from EFC. * CJ. & EJ. * PN. * Da. * Bn. * By. * Wor. * EP. * EWT. for R.R.Inc. [Watermark: MADE AT CROXLEY] X.4288 - EXIDE 6…

Scan287 Standardisation proposal for an Exide 6 BXE5 battery with independently supported elements.
View original record STANDARDISATION of CHASSIS PARTS. Description of Parts. Exide 6 BXE5 Battery with - (1) Independently supported positive and negative elements. (Contd on att.sheet). Origin. This being the result of…

Scan288 Continuation sheet listing modifications to battery components, including plates, separators, and cells.
View original record Continuation of Stdd. Sheet. 23.3.21. (2) Slotted ebonite sheets between wood separators and positive plates (in place of sheets with circular holes). (3) Larger wooden separators projecting beyond…

Scan289 Recommendation to standardise the Exide Battery BXE.5 after successful testing.
View original record R.R. 335a (100 T) (S.H. 798, 10-12-20) G. 2948 EFC. from Hs. Hs1/LG27.4.21. X.4208. EXIDE BATTERY BXE.5 We have been running one of these batteries on 1 EX car - it has given no trouble. We consider…

Scan290 Extract from a report on the testing and durability of the new standard Exide 6BXE5 battery.
View original record H.R. 884a (100 T) S.F. 798. 10-12-20 G 2247 X. 4288 Extract from EFC4/T2.6.21. X.664- BATTERIES Battery No.61 Exide 6BXE5 with separately supported positive and negative plates (New R.R. Standard).…

Scan291 Future accumulator choices, comparing Exide and C.A.V.-Willard batteries for chassis installations.
View original record TO EFC. from R. Copy to CO. " HORE " HS. " BA " EX [Stamped: RECEIVED] X4288 O 4 R8/G14/6/21. X4288 RE ACCUMULATORS FOR BOTH CHASSIS. K664 X4283 [Handwritten: from Feb 1921] I think it is quite clear…

Scan292 Letter to a supplier regarding corrosion issues on 6BXE5 batteries due to incorrect washer material.
View original record X 4288 Emd/Ms EFCS/T. 15th June, 1921. The Chloride Electric Storage Co.Ltd., Clifton Junction, Nr. Manchester. Dear Sirs, X 4288 Re:Present Standard 6 BXE5 Batteries. On the 6BXE5 batteries of the…

Scan293 Letter discussing the material used for washers and the inspection of batteries.
View original record EFCS/T. -2- Contd. Taking it for granted that you had not reintroduced brass for these washers, we did not inspect the batteries so minutely as to discover the reintroduction. Yours faithfully,

Scan294 Letter discussing issues and potential solutions for corrosion on lead washers in 6 BXE.5 batteries.
View original record THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. TELEGRAMS: CHLORIDIC, PENDLEBURY CODES: BENTLEY'S, LIEBERS, A.B.C. 4th & 5th Editions TELEPHONES: MANCHESTER CENTRAL 1638. PENDLETON 481 6 LINES LONDON…

Scan295 Letter from The Chloride Electrical Storage Co. Ltd. regarding a service visit to supply washers.
View original record Continuation No. 1. Messrs. Rolls-Royce Ltd., Derby. 16th June, 1921. with, we will send a man over with the necessary number of washers to effect the change at your Works. Yours faithfully, THE…

Scan296 The replacement of brass washers with lead ones on standard 6-BXE.5 batteries.
View original record R.R. 199 (250T) (SD676 19-7-17) MP18086 X.4288 BY/Mtn6/H. 17. 6. 21. MS. C. EFC. X4288 RE STANDARD 6-BXE.5. BATTERIES. With reference to EFC's letter to the Chloride Company, reference EFC8/T. of the…

Scan297 Corrosion issues and design improvements for Exide and Tudor batteries.
View original record To R & E from EFC. c. to CJ. c. to Da. c. to By. X4298 EFC1/T23.6.23. X.607 - RE EXIDE AND TUDOR BATTERIES X.4053 X.4283. X.979 X.4288 We are sending you under separate cover four cell lids with…

Scan298 Battery terminal corrosion and proposed improvements to the washer and nut arrangement.
View original record Contd. - 2 - EFC1/T 23.6.21. followed by a hexagon nut, after which a flat strip connector comes on, followed by a further nut and a lock nut. In principle, the arrangement seems correct except for…

Scan299 Technical memorandum comparing batteries from the Tudor Company and C.A.V.
View original record Contd. -3- EFC1/T23.6.21. The Tudor Company have sent us this sample because they are making up for us two batteries to represent our ideas in every respect. It may be remembered that some…

Scan300 Price comparison of Tudor, Exide, and C.A.V. Willard batteries.
View original record Contd. -4- EFC1/T23.6.21. ourselves and the Tudor Company. The recently quoted price of the Tudor battery is £7.17.6 as against the present standard Exide £8.10.0 and the C.A.V. Willard 12 XR3 £6.12.8…

Scan301 Letter from Chloride Electrical Storage Co regarding standard 6 BXE.5 batteries and antimonial lead washers.
View original record X 4188 S. E. 2824 (100 T) (S H. 728, 10-15-20) G. 2047 COPY OF A LETTER RECEIVED FROM:- MESSRS. CHLORIDE ELECTRICAL STORAGE CO. CLIFTON JUNCTION. MANCHESTER. ECM/LB 23rd June.1921. Messrs. Rolls Royce…

Scan302 Changeover from brass washers to antimonial lead washers for Standard 6-B.X.E.5. batteries.
View original record R.R. 235a (100 f) (S.H. 798. 10-12-20) G. 2948 X.4288 EFC. Wd/AW1/W25621. 25th June.1921. STANDARD 6-B.X.E.5. BATTERIES. RECEIVED We have now received a report from the Works and we find that there…

Scan303 The changeover from brass terminal washers to antimonial lead washers for BXE-5 batteries.
View original record R.R. 235a (100 F) (S.H. 798. 10-12-20) G. 3948 X.4288 BY c. to EFC. Wd/AWG/W27621. 27th June.1921. X.4288 BXE-5 BATTERIES REF: BY/MTN6/H17.6.21. FITTED WITH BRASS TERMINAL WASHERS. The number of…

Scan304 Replacing brass terminal washers on batteries and requesting a supply for repair depots.
View original record X.4288 BY/Mtn2/H. 4. 7. 21. RECEIVED Order Office. c. EFC. X 4288 RE BXE.5. BATTERIES FITTED WITH BRASS TERMINAL WASHERS. Referring to your Wd/AW6/W. 27. 6. 21. we note that the Exide people will send…

Scan305 The changeover of standard battery terminal washers from brass to antimonial lead.
View original record X4288 EFC. Wd/AWL/W11721. 11th July, 1921 RECEIVED X4288 STANDARD BATTERIES - CHANGEOVER OF BRASS TERMINAL WASHERS. The Chloride Electrical Storage Co Ltd., have written us to the effect that they…

Scan306 Letter from The Chloride Electrical Storage Co. regarding the despatch of replacement terminal washers for starter battery sets.
View original record R.R. 199 (250T) (SD676 19-7-17) MP18085 X.4288 COPY OF A LETTER RECEIVED FROM:) THE CHLORIDE ELECTRICAL STORAGE CO. CLIFTON JUNCTION. MANCHESTER. WTC/GGW. 8th July.1921. Messrs. Rolls Royce Ltd.,…

Scan307 Copy of a letter from The Chloride Electrical Storage Co Ltd regarding starter batteries and terminal washers.
View original record N.E. 252A.(100 T) (S H 798, 16-12-20) C. 1047 X.4288 COPY OF A LETTER RECEIVED FROM:- THE CHLORIDE ELECTRICAL STORAGE CO LTD. CLIFTON JUNCTION. MANCHESTER. WTG/AP. 15th July.1921. Messrs. Rolls Royce…

Scan308 The changeover from Brass Terminal Washers to Antimonial Lead Washers on Chloride batteries.
View original record X.4288 R.R. 293m 100 T S. H. 988. 19-2-21 G. 3809 EFC. Wd/AWG/W21721. 21st July.1921. CHANGEOVER ON CHLORIDE BATTERIES. You will be interested to learn that the Chloride Co's representative has now…

Scan309 The vibration test of a new standard Exide battery.
View original record XL4288 Wrot. on UPO/S-11 201 H.M.(T) A&B 8/21 To R. & E. from EFC. c. to CJ. & FN. c. to Hy. & EF. c. to Rg. & Da. c. to R.R. of America Inc. EFC1/T12.8.21. X.3937 - VIBRATION TEST OF STANDARD…

Scan310 Battery vibration test, detailing the apparatus used and the condition of the elements after treatment.
View original record Contd. -2- EFC1/T12.8.21. Examination of these figures will show that the ampere-hours of each charge have been roughly the same. It will be noted that the ampere-hours of discharge have not…

Scan311 Analysis of battery cell failures, comparing mechanical vibration with incorrect electrical treatment and testing procedures.
View original record Contd. -2- EFC1/T12.8.21. This fact, together with the fact that we have, on cells with elements insufficiently separated, experienced failures by buckling and shorting when the cell has done nothing…

Scan312 The testing and condition of battery cells after charging and overcharging experiments.
View original record Contd. -4- EFC1/T12.5.21. This has been accomplished by placing the cell in one of the supply mains in our laboratory, so that it would be receiving normally about 10 amperes charging current, and…

Scan313 Report discussing the effects of overcharging and discharging on battery plates and detailing a vibration test on a modified cell.
View original record Contd. -2- EFC1/T12.8.31. having flaked off the surfaces of the plates. This rather bears out, as we have heard, that continuous overcharging alone does not deteriorate the plates very much, but what…

Scan314 Recurring issue of damaged batteries upon delivery to coachbuilders and the associated repair costs.
View original record R.R. 214A (100 T) S.H.T. 789. 10-12-20. G 2047 X4288 S/W COPY Sn. Bs5/CM18.8.21. dictated 17.8.21. x607 Re:- BATTERIES. X4288 We are still experiencing considerable difficulty with broken batteries.…

Scan315 Letter regarding a cell failure in an experimental battery due to a missing separator.
View original record R.R. 253a (100 T) (S H. 798. 10-12-20) G. 2347 X. 4288. EFC 2/T. 30th August, 1921. The Chloride Elec. Storage Co., Clifton Junction, Nr. Manchester. Dear Sirs, Re 6 BXE 5 Batteries - present Standard…

Scan316 Letter concerning a battery failure and discussing reliability and inspection processes.
View original record R.R. 252a (100 T) (S.H. 768. 10-12-26) G. 2947 EFC2/T, -2- Contd. It is fortunate that this particular failure did not occur in the hands of our Chief Engineer else there is little doubt that this…

Scan317 Letter of apology regarding the omission of separators in experimental batteries.
View original record X4288 THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. LONDON OFFICE. 57. VICTORIA STREET. S.W. CLIFTON JUNCTION NR MANCHESTER. OUR REFERENCE ECM/LB. 5th September, 1921. Messrs. Rolls-Royce Ltd.,…

Scan318 Leakage of charge test report for a Chloride 6BXE5 12-volt battery.
View original record X4288 To R & E. from EFC. c. to CJ. &PN. c. to Rg. & Da. c. to By. & EP. c. to R.R. of America Inc. X.3989 LEAKAGE OF CHARGE TEST OF LATEST STANDARD X.4 288 CHLORIDE 6BXE5 12 VOLT BATTERY. Further to…

Scan319 Battery discharge capacity test to determine the cause of capacity reduction.
View original record Contd. -2- EFC5/T6.9.21. The battery is now being charged up and a discharge capacity test will be taken to see whether the cells are still capable of their full capacity. If this is the case, it will…

Scan320 Instructions and results for leakage and charge tests conducted on a standard Chloride battery after six months.
View original record RR 300 (120B) (SF 349 24-1-19) MP 200552 X4288 95269 ROLLS-ROYCE LIMITED. INSTRUCTIONS. I To: E.F.C. Order No.: Customer's No.: AD. 141. Re: X.3980 Leakage & Charge Tests X.4288 Chloride(e), the…

Scan321 Battery leakage tests, noting that surface leakage is negligible but internal leakage may be an issue.
View original record RR 300 (120B) (SF 349 24-1-19) MP 200552 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II 95270 19 To Order No. Customer's No. FD.142 Re not give the impression that this leakage is appreciable. In fact they…

Scan322 Report detailing cell discharge rates and results in a tabular format.
View original record RR.300.(1208) (SF 349 24-1-19) MP 200552 95271 ROLLS-ROYCE LIMITED. INSTRUCTIONS. III To Order No. Customer's No. FD 143 Re had much more to do with these results than anything else. CELL No. | Hrs…

Scan323 Notification about the change in designation for the standard Chloride battery cell.
View original record X.4288 23.9.21. X.4288 - STANDARD CHLORIDE BATTERY. The Chloride Co. have advised us that they now wish to call the latest standard type of cell by the designation "BXRE.5". EFC.

Scan324 Arranging a conference to discuss faulty Exide batteries.
View original record R.R. 28A. (100 T) S.H. 796. 10-12-30 G 2947 X4288 To Sn. from EFC. " EP. " Wd. " By. c. to Wor. c. to C/Bs. EFC1/T6.10.E1. X.607 - EXIDE BATTERIES. X4288 On the question of faulty Exide batteries, and…

Scan325 Graph chart recording a battery efficiency test.
View original record X.4288. Battery recived charged from Transport Dept. upon which efficiency test is to be carried out. Average amps = 9.85 40.6 amps Hrs TRADE MARK REGD.

Scan326 Results of an efficiency test on a BXRE5 Chloride battery after 20 discharge and charge cycles.
View original record X4288 95293. 28.1.22. F.D.165. EFC. X.664. X.4288. The standard BXRE5 Chloride battery upon which the efficiency test has been carried out has given 30 amp. hours after 20 discharges and charges. For…

Scan327 Letter regarding a new contract for the supply of 'Exide' starter batteries for 40-50 Rolls-Royce cars.
View original record y 4288 COPY OF LETTER RECEIVED FROM:- THE CHLORIDE ELECTRICAL STORAGE CO. LTD., CLIFTON JUNCTION, Nr. MANCHESTER. ECM-LB. 6th February, 1922. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. x4288 x…

Scan328 Letter from The Chloride Electrical Storage Co. Ltd. regarding a contract for 'Exide' batteries.
View original record -2- Contd. over crate 8 1/16". The weight of the set is 102 lbs. So confident are we of the increased satisfaction that you would derive from this battery, and so anxious are we that you substitute it…

Scan329 Specific information to diagnose the cause of Exide battery failures.
View original record R.R. 199 (250T) (SDg76 19-7-17) MP 180865 X.4288. P. (PS) c: EPC. BY3-P15.5.22. [Handwritten:] X.4288. X.607. [struck through] RE BATTERIES. [STAMP: RECEIVED 16 MAY 1922] Referring to PsJM0522 dealing…

Scan330 Exide battery performance, liability for additional electrical fittings, and a disagreement with the Paris representative.
View original record R.R. 199 (250) (SD69a 10-7-17) MP 180865 BY3-P15.5.22. contd. - 2 - With reference to the remark of their expert, that if any addition is made to the standard electrical equipment the Exide people…

Scan331 Battery service dispute regarding a new versus a renewal battery for a customer.
View original record D/Sn. from Wd. c.to EFC. c.to By. c.to EP. c.to Hm. c.to D/BP. c.to Rcy. HS X. 4288 RECEIVED AUG 28 1922 Wd6/NJ28.8.22. Battery Service. Attached hereto is copy of letter from the Chloride Electrical…

Scan332 Letter from The Chloride Electrical Storage Co. Ltd. regarding a battery service misunderstanding and clarifying replacement procedures.
View original record C O P Y. Letter from:- THE CHLORIDE ELECTRICAL STORAGE CO. LTD., Clifton Junction, Nr.Manchester. Ref.- ECM/GGW. 25th August,1922. Messrs.Rolls-Royce Limited, Nightingale Road, Derby. Dear Sirs, Re…

Scan333 Comparison between the proposed P & R BD.11 battery and the standard Exide 6BXFD battery for the 40/50 chassis.
View original record R.R. 109 (5000) (SDg9 19-7-22) M/L&S To FN. from EFC. c. Ey. c. EP. X4288 EFC2/T21.11.22. X.3396 - PROPOSED P & R BD.11 BATTERY FOR 40/50 CHASSIS COMPARED WITH PRESENT STANDARD EXIDE 6BXFD. X4288 (1)…

Scan334 Comparison of the Exide and P & R batteries, detailing their weight, dimensions, and general features.
View original record R.R. 199 (500T) (SD29)9-7-17) MPB0805 Contd. -2- EFC2/T2..11.22. (6) Weight of battery :- The weight of the Exide battery without box is 82¼ lbs. The weight including box is 95 lbs. The weight of the…

Scan335 Internal request for two standard Exide batteries for experiments with an oscilloscope.
View original record X4288 ToWd/Ms. from EFC. EFC1/T8.5.23. X. 4288 - STANDARD EXIDE BATTERIES. Will you kindly arrange to supply the Expl. Dept. with two standard Exide batteries from stock if possible, otherwise from…

Scan336 Report from the Chloride Co. regarding the failure of an Exide Battery's negative plates.
View original record EP. from Wd. c. to EFC. c. to Chat X. 4288. Wd4/NJ13.6.23. Exide Battery. In reply to EP/CEP6/EC6.6.23, the Chloride Co. have now written us, under dated 12th inst. as follows:- "We beg to acknowledge…

Scan337 Battery faults and potential solutions for the 40/50 chassis.
View original record [Handwritten top right] X4288 2. [Handwritten top left] EFC. X.4288 [Struck through] X.3318 [Struck through] X.664 [Struck through] [Faint stamp over text] HYDE WORKS [Typed] BY11-P28.9.23. BATTERIES…

Scan338 Continued discussion on battery weight distribution and design, referencing the Exide case.
View original record BY11-P28.9.23. contd. - 2- to put in the weight of our box into the battery as useful weight instead of as redundant weight in the case of the Exide. I want to apologise for returning to this point…

Scan339 EFC to Wd. requesting an order for 40/50 Exide batteries for experimental cars.
View original record X,4288 To Wd. from EFC. EFCl/T12.10.23. 4288 X.607 - 40/50 EXIDE BATTERIES. Will you kindly order up for use on experimental cars 2 Standard 40/50 Exide Batteries, type 6BXRE5. charged and oblige.…

Scan340 The hard and gritty state of negative plates in Exide batteries sent for repair.
View original record S/W EP X4358 LE25/H/25.10.22 Exide Batteries ----------------- As you are aware, Holgate examines in conjunction with Chlorides all batteries sent in for repair. He reports that he has noticed…

Scan341 Requesting three standard Exide BXRE5 cells for a special experiment.
View original record To Wd. from EFC. X4288 EFC2/T1.11123. X.4288 - EXIDE BATTERIES. Will you kindly obtain for the Expl. Dept. for a special experiment:- 3 Single Standard Exide BXRE5 Cells (separate) these cells being…

Scan342 Letter from Chloride Electrical Storage Company regarding the examination of seven 12 volt 'Exide' batteries.
View original record X. 4288 THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. TELEPHONES: PENDLETON 481 (6 LINES) TELEGRAMS: CHLORIDIC, PENDLEBURY CODES: BENTLEY'S, LIEBERS, A1, AND A.B.C. (4TH & 5TH EDITION) LONDON…

Scan343 Concluding page of a report from a battery supplier about the quality of plates.
View original record THE Chloride ELECTRICAL STORAGE COMPANY LIMITED Messrs Rolls Royce Ltd. CONTINUATION PAGE No. 2. up non-adherent mass. We are glad to be able to give you this report, as it should go to remove any…

Scan344 Letter quoting a report from Chloride Electrical Storage Co. Ltd. on the cause of failure in Exide batteries.
View original record EF. from Wd. c. to EFC. c. to EV. X.4288 Wd7/NJ5.11.23. Exide Batteries. Referring to EP/CEP3/H5.10.23, we are in receipt of a letter from the Chloride Electrical Storage Co.Ltd., Clifton Junction,…

Scan345 Arranging a visit from Mr. McKinnon of the Chloride Electrical Storage Co. Ltd. to discuss Exide Batteries.
View original record By. from Wd. c. to EFC. c. to H.R. [struck through] c. to HH. [struck through] X. 4288. F.R. [stamped] Wd11/NJ13.11.23. X. 4288. Exide Batteries. Mr.McKinnon, of the Chloride Electrical Storage…

Scan346 Instructing the replacement of a temporary battery on chassis 4-EX.
View original record To Hs/GWH. from EFC. X.4284 EFCl/T19.11.23. BATTERY ON 4-EX. The battery given to you for 4-EX at the time the Willard was removed was a new battery obtained for special work, and was only intended to…

Scan347 Faults, service history, and re-conditioning issues concerning Exide batteries.
View original record X.4288 c. to EFC. c. to BY. (struck out) EP/CEP15/H23.11.23. RE. EXIDE BATTERIES. Referring to your memo Wd7/NJ5.11.23, which we should have replied to previously, but was held over pending the visit…

Scan348 Allocation of two standard 40/50 Exide batteries for a specific job.
View original record X4288 To D/BP. from EFC. EFC6/T1.1.24. With reference to the attached, all our batteries are either experimental or duty batteries required in the Expl. Dept. and we have no more of the latter than…

Scan349 Proposed visit from The Chloride Electrical Storage Co. Ltd to discuss batteries.
View original record X. 4288 F.R. By..from Wd. c. to EFC. c. to EP. c. to Hm. c. to Roy. c. to Ms. Wd1/NJ11.3.24. X 4188 The Chloride Electrical Storage Co.Ltd. Yesterday Mr.McKinnon informed me by 'phone that he is…

Scan350 The rescheduling of a visit from Mr. McKinnon of The Chloride Electrical Storage Co. Ltd.
View original record By.from Wd. c.to EFC. c.to HP. c.to Hmr. c.to Roy. c.to Ms. X 4288 F.R. Wd3/NJ18.3.24. The Chloride Electrical Storage Co.Ltd. I confirm mine Wd8/NJ17.3.24. We are this morning in receipt of a letter…

Scan351 Comparing the service performance of Peto & Radford batteries against Exide batteries.
View original record X4288 BY. from EP. c. EFC. c. HS. c. Hm. c. Wd. EP25/H18.3.24. X.664. X.4414P. X.4414E. X.3398. X.4288. RE BATTERIES FOR CARS. We feel that we have now had sufficient experience in the use of…

Scan352 Routine treatment and testing of car lighting and starting batteries.
View original record X.4288. ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 12-12-23. Battery under treatment:- Exide CF. Rated capacity:- 55 ampere hours. Received charged or uncharged:- charged X.607.…

Scan353 Log sheet detailing the charging process, weight, and density readings for a battery.
View original record -2- Contd. Date:- (6) Second charge:- Amperes. from to hours amp-hours. Total (7) Emptying and refilling, or adjusting densities and levels. (7a) Density readings for battery received charged. (1)…

Scan354 Log of battery cell performance test results, including densities, charges, and amperes.
View original record Contd. -3- Date (12) Cell densities:- (1) 1150 (4) 1150 (2) 1150 (5) 1155 (3) 1155 (6) 1155 (13) Third charge equivalent to average current of 6.0 amperes for 18.0 hours i.e. ampere-hours = 108.0.…

Scan355 Electrical experimental record sheet for an Exide 6BXRE5 battery.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS Exide 6BXRE5 (CF) Battery (1117) X. No. 607 Date on. | Location. | Date off. | Remarks. | Miles Reading start. | Miles Reading finish. | Miles covered. | Total…

Scan356 Electrical experimental record sheet for an Exide Battery 6BXRE5-FF (134).
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X.607 4288 Exide Battery 6BXRE5-FF (134) Date on. Location. Date off. Remarks. Miles reading start. Miles reading finish. Miles covered. Total miles. 1-2-24 Lab…

Scan357 Electrical experimental record sheet for an Exide 6BXRF5-DF 12V battery, tracking mileage usage.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. Handwritten Title: Exide 6BXRF5-DF Battery (12V.) Reference Number: X 4288 Table Columns: Date on., Location., Date off., Remarks., Miles Reading Start., Miles…

Scan358 The development and performance of Exide batteries for the 40/50 chassis.
View original record To R & E. from EFC. c. CJ. & FN. c. Nor. Wd. c. By. EP. Da. X4288 (Extract) EFCl/T11.10.24. X.664 - BATTERIES FOR 40/50 CHASSIS. Exide 6.RXRE-5 (Standard until recently). X4288 This refers to the…

Scan359 Graph plotting electrical test results with calculated values for amperes, hours, and ampere-hours.
View original record X 4288. 2-1-24 oxide cf 82 55 Average amperes = 10.51 hours = 5.83 Ampere hours = 61.3 REGD. TRADE MARK REGD. X4288 1.17w.

Scan360 Test chart showing the discharge performance of an Exide 6BXRE5-FF battery.
View original record 134. Exide 6BXRE5-FF 82.5 lbs 60 ah 14 - 2 - 24 Average amperes = 6.44 hours = 8.0 Ampere hours = 51.5 .624. 1.80ω REGD. TRADE MARK

Scan361 Battery test chart recording showing a discharge curve with calculated average amperes, hours, and ampere-hours.
View original record 25 14-4-24 134 Exide 6BXRE5-FF 82.5 lbs 60 ah. Average amperes = 6.54 Hours = 9.33 Ampere hours = 61.0 .739 1.80v. RECORDING CHART No ME.C.C.E.RT

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