Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 54\2\        Box Selection

IdentifierEntry
Scan001 Outlining decisions on the 40/50 chassis battery, including adopting Exide's proposals and arranging a future conference.
View original record Wd. from BY. c. EFC. X4617 BY8/P28.11.23. X.4617. X.3398b. 40/50 CHASSIS: BATTERY. X.4414. Whilst regretting my inability to be present at yesterday's interview with Mr. Minchin, as representing the P…

Scan002 Recommending the compulsory use of ebonite separators in the 20 HP P & R battery.
View original record -2- Whilst dealing with the question of batteries I would like to add that I consider we should make the inclusion of an ebonite separators compulsory in the 20 HP. P & R battery as well, as…

Scan003 Standardisation of 40/50 and 20 HP batteries.
View original record x4617 To EY. from EFC. c. Wd. EFC2/T30.11.23. X.4617. RE 40/50 and 20 H.P. BATTERIES. X.4414. Answering your Ey8/P28.11.23, presumably it will also be necessary for Mr. Minchin, Mr. McKinnon and…

Scan004 New battery proposals, the postponement of a conference due to illness, and ebonite separators.
View original record EFC. c. Wd. x4617 EY5/P7.12.23. X.4414. X.3398.b X.4617. BATTERIES. With reference to our new proposals in regard to the P & R & Exide batteries, Mr. Minchin informs me that he will not be available…

Scan005 Secret memo discussing the fixed dimensions for batteries and their boxes for the 40/50 & E.A.C. car models.
View original record X.4617 (Corrected copy) S E C R E T. To Da. from EFC. c. EX. EFC2/T20.12.23. X.4617 - RE BATTERIES FOR 40/50 & E.A.C. The dimensions of batteries for the present 40/50 car are, as I daresay you know,…

Scan006 Query regarding proposed battery dimensions for the E.A.C. chassis and 40/50 cars.
View original record Contd. -2- EFC2/T20.12.23. make new plate moulds, etc. What we are anxious to know at the moment is what is being proposed for the E.A.C. chassis. It would be more worth while our settling upon these…

Scan007 Secret internal memorandum discussing battery options and fitting issues for 40/50 & E.A.C. models.
View original record H. M. 888A (100 T) S. H 159. 11-8-20::G. 2900 X.4617. TO EFC. FROM DA. S E C R E T. DA9/M18. 1. 24. X.4617. re. BATTERIES FOR 40/50 & E.A.C. We regret the delay in replying to your EFC2/T201223. but…

Scan008 Fitment of P & R and Exide batteries in a car frame.
View original record (2) frame, and the P & R battery on the runningboard where-ever it can be used. With EAC.5. we come to the first car in which there will be a chance of ample room for the battery in the frame, and we…

Scan009 Correcting an error where the dimensions for a Goshawk battery were given instead of those for the 40/50 model.
View original record X 4617. E. A. C. EFC3/T25.1.24. To Da. from EFC. c. By. X 4617. RE BATTERIES FOR 40/50 & E.A.C. We have your note Da9/M18.1.24. On first reading your fourth paragraph, we suspected something wrong,…

Scan010 Correspondence regarding battery dimensions and capacity for a 40/50 HP Chassis.
View original record X.4617. EFC. from Wd. C. to By. [crossed out] Wd4/NJ25.1.24. X. 4617. 40/50 H.P.Chassis - Batteries. We are in receipt of a letter from Messrs. Peto & Radford, dated 24th inst. as follows:- "We have…

Scan011 Forwarding a letter from the Chloride Electrical Storage Co. Ltd. regarding lug terminals on batteries for the 40/50 HP Chassis.
View original record EFC. from Wd. c. to By. X.4617 Wd1/NJ28.1.24. X.4617. 40/50 H.P.Chassis - Batteries. I attach hereto copy of letter from the Chloride Electrical Storage Co.Ltd. dated 25th inst., together with copy of…

Scan012 Letter from a battery supplier discussing dimensions and terminal specifications for a 40/50 HP chassis.
View original record COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE COMPANY LIMITED. CLIFTON JUNCTION, NR MANCHESTER. Our Reference ECM/EH. 25th January 1924. Messrs. Rolls-Royce Ltd., D E R B Y. Dear Sirs,…

Scan013 Continuation page of a letter from The Chloride Electrical Storage Company Ltd. concerning battery cell patterns.
View original record Continuation Page........1... Messrs. Rolls-Royce Ltd., Derby. battery will be made up of three distinct patterns of cells, whereas if conical lug terminals are agreed to as in the 20 h.p. chassis…

Scan014 Specification for an 'Exide' battery for 40/50 HP cars.
View original record COPY. THE CHLORIDE ELECTRICAL STORAGE COMPANY LIMITED. CLIFTON JUNCTION, NR MANCHESTER. ECM/EH. 25th January. 1924. Messrs. Rolls-Royce Ltd., D E R B Y. SPECIFICATION of "EXIDE" BATTERY FOR ROLLS…

Scan015 Correspondence regarding battery specifications, dimensions, and quotations for the 40/50 HP Chassis.
View original record EFC. from Wd. C. to By. X.4617. Wd1/NJ31.1.24. X.4617. 40/50 H.P.Chassis - Batteries. I confirm mine Wd1/NJ28.1.24, also mine Wd4/NJ25.1.24. Yesterday afternoon Mr.Minchin of Messrs.Peto and Radford…

Scan016 Battery delivery timelines and a required decision on terminal design.
View original record - 2 - "and we shall be able to make deliveries of any "batteries which you are good enough to order from "us by the end of March. "A decision regarding the end terminals of the "battery is desired at…

Scan017 Confirming a letter was sent to battery suppliers regarding the 40/50 HP Chassis.
View original record EFC. from Wd. c. to By X. 4617 Wd8/NJ1.2.24. X. 4617. 40/50 H.P. Chassis - Batteries. Referring to mine Wd1/NJ31.1.24 and my conversation with you at lunch today, I hand you herewith copy of…

Scan018 Letter to The Chloride Electrical Storage Co. Ltd. about modifying battery terminal specifications for the 40/50 HP Chassis.
View original record Wd6/WJ1224 1st February, 1924. Messrs. The Chloride Electrical Storage Co.Ltd., Clifton Junction, Nr. Manchester. Dear Sirs, Battery for our 40/50 H.P. Chassis. We duly received yours ref.- ECM/EH. of…

Scan019 Altering the 40/50 chassis battery specification to ensure terminals are identical and interchangeable.
View original record To Wd. from EFC. c. to BY. X4617 EFC1/LG2.2.24. X.4617 - RE. LARGER 40/50 CHASSIS BATTERIES MADE BY P & R. AND EXIDE. Answering your Wd1/NJ28.1.24 and confirming our conversation. We agree and…

Scan020 Confirming the price of batteries for the 40/50 HP chassis from supplier Peto & Radford.
View original record EFC. from Wd. to Bv X.4617 Wd7/NJ4.2.24. X.4617. 40/50 HP. Chassis - Batteries. I confirm mine Wd8/NJ1.2.24. We are now in receipt of a letter from Peto & Radford, dated 1st inst. stating that their…

Scan021 Final details and manufacturing approval for the new 40/50 HP chassis battery.
View original record EFC. from Wd. X. 4617. Wd8/NJ5.2.24. X. 4617. 40/50 HP. Chassis - Batteries. I confirm mine Wd7/NJ4.2.24. Mr. Minchin has 'phoned me today asking whether all details of the new 40/50 HP. battery are…

Scan022 Letter regarding correspondence with Chloride Co. and Peto & Radford about battery cell terminals for the 40/50 HP Chassis.
View original record EFC. from Wd. C. to By. [struck through] X.4617. Wd2/NJ13.2.24. 40/50 HP.Chassis - Batteries. I confirm mine Wd2/NJ11.2.24. Yesterday we received a letter from the Chloride Co. stating that the…

Scan023 Copy of a letter from Peto and Radford to Rolls Royce regarding battery connection specifications and issues.
View original record X. 4617 COPY OF LETTER FROM:- PETO AND RADFORD 50, GROSVENOR GARDENS, LONDON. S.W.1. Our Ref....M/5. 12th February. 1924. Messrs. Rolls Royce Ltd., DERBY. Dear Sirs, We have yours of the 8th inst.…

Scan024 Battery connection issues on the 40/50 and 20HP chassis, proposing to adopt the 40/50 scheme on the 20HP.
View original record X.46/7. Wd. c. EFC. BY2-P14.2.24. 40/50 CHASSIS - BATTERIES. In reply to Wd2/NJ11224 and Wd2/NJ13224, we have not, to my knowledge, experienced trouble from loose connections on the 40/50 chassis. So…

Scan025 Retaining the existing bolted cell-to-cell connections for new P. & R. and Exide batteries on the 40/50 HP model.
View original record X4617 To Wd. from EFC. c. to BY. EFC2/LG14.2.24. 40/50 HP. X.4617 - NEW P. & R. AND EXIDE BATTERIES. Answering your Wd2/NJ13.2.24 and with reference to BY2/F14.2.24. We may say we entirely agree with…

Scan026 Specification No. 301 for a 40/50 HP chassis lighting and starting 12-volt battery.
View original record X4617 EFC1/T8.3.24. SPECIFICATION No.301 OF RR. 40/50 HP. CHASSIS LIGHTING & STARTING BATTERY (12 VOLT) X664 X4617 (1) CAPACITY OF BATTERY. The ampere hour discharge capacity (actual) of the battery…

Scan027 Specifications for a battery, including its case, weight, and the dimensions of its cells.
View original record FCL/T8.3.24. -2- Contd. (or two) should be suitably fitted between the two middle cells of the battery to afford support to the sides of the case. The material of the case should be wood of the most…

Scan028 Page detailing specifications for battery cells, their layout, terminals, and connections, including a diagram.
View original record Contd. -3- (9) INDIVIDUAL CELLS. Each cell will be a complete unit in itself so that there is absolutely no possibility of internal cell to cell leakage. (10) DISPOSITION OF CELLS IN THE BATTERY. This…

Scan029 Specifications for battery cell sealing compound and plate grids.
View original record X4617 -4- Contd. (12) SEALING COMPOUND. The cells should be completely sealed over their tops only. This means that sealing compound should not be allowed completely to fill the interstices between…

Scan030 Technical specifications for the design of car batteries, covering components and operational considerations.
View original record EFCL/TS.3.24. -5- (14) SEPARATORS. The material and thickness of the separators should be such as absolutely to prevent any possibility of short circuits from plate to plate during the life of the…

Scan031 Request to obtain three standard 40/50 batteries for the Experimental Department.
View original record X 4617. To Wd. from EFC. EFC6/T11.6.24. X.4617E/P - STANDARD 40/50 BATTERIES. Will you kindly obtain for the Expl. Dept. two of the new standard 40/50 size Exide batteries, and one of the new standard…

Scan032 Confirming the acquisition and transfer of new Exide and P & R batteries for 40/50 HP models.
View original record X4618 (crossed out) EFC. Wd/AW10/W16.6.24. In accordance with yours EFC6/T11.6.24 we have obtained two new standard 40/50 HP. Exide Batteries and one new standard 40/50 HP. P & R Battery. We have…

Scan033 Battery availability and replacement options for 40/50 chassis.
View original record x4617 To RHC. from EFC. CWH. EFC1/T12.7.24. RE 40/50 BATTERIES. --------------------- At the time of writing chassis 35-PK, and 44-PK and 98-NK, are equipped for the P & R battery type TBD11, a…

Scan034 The weight of the new standardized 40/50 battery.
View original record X4617 To By. from EFC. c. Wd. EFC2/T14.I.24. X.4617. STANDARDIZED 40/50 BATTERY. You will be interested to know the weights of the new type 40/50 batteries of Exide and P & R make. The weight of each…

Scan035 Correspondence concerning battery specifications and a discrepancy in cell height for 20HP and 40/50HP models.
View original record X.4617. EFC. from Wd. c. to By. Wd11/NJ21.7.24. X.4642?. 20 HP. Exide Battery to P & R Pattern. Our specification 302. Your note EFC1/T14.7.24. &Specification EFC2/T11.7.24. X.4617. 40/50 HP. Battery…

Scan036 Extract from a letter regarding revised specifications for batteries.
View original record Extract from letter received from:- PETO & RADFORD, 50, GROSVENOR GARDENS, LONDON, S.W.1. Our ref. M/C.187. 18th July, 1924. Messrs Rolls-Royce Ltd., Nightingale Road, DERBY. Dear Sirs, "With further…

Scan037 Letter providing comments on specifications, particularly regarding sealing compound.
View original record Contd. -2- No.12. Sealing compound. We think you should state that it can be poured between the centre cells where the bicycle spokes are so as to cover these up and protect them from acid should any…

Scan038 20 HP and 40/50 HP battery specifications, and the need to decide on battery terminals.
View original record EFC. from Wd. c. to Ey. X.4617. Wd13/NJ/30.7.24. X.4642E. 20 HP. Exide Battery to P & R Pattern. Our Specification 302. Your note EFC1/T14.7.24. & Specification EFC2/T11.7.24. X.4617. 40/50 HP.…

Scan039 Letter from The Chloride Electrical Storage Co. Ltd. discussing battery specifications for a 40/50 HP Chassis.
View original record Extract from letter from:- THE CHLORIDE ELECTRICAL STORAGE CO.LTD., Clifton Junction, Nr. Manchester. 29th July, 1924. Ref. WD/NJ. Messrs. Rolls-Royce Ltd., Derby. Dear Sirs, Your ref. Wd6/NJ15.7.24 &…

Scan040 Letter from The Chloride Elec. Storage Co. Ltd. discussing battery construction and protection from acid.
View original record -2- Contd. a uniform spacing between the two centre cells. Compound poured around the two cycle spokes would guard against the risk of acid attacking them as the result of a broken box. We shall be…

Scan041 Specifications for 20 HP and 40/50 HP chassis accumulators and related correspondence.
View original record EFC. from Wd. c. to Ey. X.4617. Wd1/NJ11.8.24. X.4642E. 20 HP. Exide Battery to P & R pattern. Our Specification 302. Your note EFC1/T14.7.24 & Specification EFC2/T11.7.24. X.4617. 40/50 HP Battery -…

Scan042 Specification and performance testing of a 40/50 HP chassis battery.
View original record To Wd. from EFC. c. EY. X4617 EFC5/T12.8.24. X.4617 - 40/50 HP. CHASSIS BATTERY. SPECIFICATION 301. EFC1/T8.3.24. With reference to your Wd11/NJ21.7.24, Wd13/NJ30.7.24 and Wd1/NJ11.8.24, we have…

Scan043 And responding to clauses regarding battery and generator specifications.
View original record Contd. -2- EFC5/T12.8.24. Clause 6. So much the better if there are two central stays in place of one. Clause 7. We had recently reduced the weight limit from 115 lbs. to 110 lbs, realising that we…

Scan044 Continued discussion on battery specifications, referencing clauses and queries for Messrs. P & R.
View original record Contd. -3- EFCB/T12.8.24. Clause 6. As in the P & R case, so much the better if there are two central stays instead of one. Clause 12. We do not know for certain whether the figure of 8-9/16" given by…

Scan045 Salient points of the 40/50 battery specification number 801.
View original record X 4617 23.9.24. X.664 X4617 SALIENT POINTS OF 40/50 BATTERY SPECIFICATION No.801. (1) Capacity 70 ampere-hours approximately. (2) (3) High rate discharge 110 amperes for six minutes. (4) Maximum…

Scan046 Comparison of different car batteries, including models from Fullers and Exide, and their suitability for a standard battery box.
View original record Contd. Extract X4617 -8- EFC1/T11.10.24. This battery is not of suitable dimensions for being placed in our standard battery box on the car, but on account of the good results Messrs. Fullers have…

Scan047 Comparison of various battery types, detailing their discharge curves, capacity results and weights.
View original record Contd. -9-7 EFCL/T17.10.24. more particularly with the Exide 6EXRE5 batteries, and either of the two should give excellent service. They are precisely in accordance with our up-to-date specification…

Scan048 Revision to the 40/50 Battery Specification No. 301.
View original record X 4617 To Wd. } from EFC. " By________ EFC1/T27.10.24. RE 40/50 BATTERY SPECN. NO. 301. Herewith please receive revised item (12) of Specification No. 301 - 40/50 Battery. dated 8.3.24. Will you…

Scan049 Amendment to Specification 301 for the 40/50 HP battery's sealing compound, including supplier feedback.
View original record EFC. from Wd. X4617 Wd5/WJ18.11.24. 40/50 HP.Battery - Specification 301. With EFC1/T27.10.24 you sent me an amendment of Clause 12 of Specification 301 (your ref: EFC1/T8.3.24). This amendment was…

Scan050 Specification 301 for the 40/50 HP battery, discussing sealing compound and temperature limits.
View original record XL4617 To Wd. from EFC. EFC3/T19.11.24. X. 4617. 40/50 HP. BATTERY. SPECIFICATION 301. Answering your Wd5/NJ18.11.24, we agree with you that Messrs. P & R's remarks which you quote are superfluous.…

Scan051 Price list for P & R Standard and Exide batteries for 40/50 and 20 HP models.
View original record X4617 10.12.24. RE BATTERIES. X4617 X4642 The price of the 40/50 P & R Standard battery is £6.12.6. " " " Exide " " £6.14.6. " " " 20 HP.P & R Standard battery is £4.7.6. " " " Exide " " £4.8.6. EFC.

Scan052 Description of the 12-volt electrical system, accumulator reliability, and the prevention of battery undercharging.
View original record X4617 Extract from R1/M9.4.25. EAC. DESCRIPTION. X.8780. X.4617. This model retains the same 12 volt electrical system, and we are pleased to say that accumulators, like tyres, are now much more…

Scan053 Adoption of 'burnt-up' battery connections for the 40/50 HP model.
View original record X.4617 COPY. Wd. BY10/H.4.5.25. 40/50 HP. BATTERIES. We have heard from Messrs. Peto and Radford again, pressing us to adopt the burnt-up connection from cell to cell. We have of course already…

Scan054 Inquiry to Chloride Electrical Storage Co. Ltd. regarding a preference for burnt-up versus bolted-up battery cell connections.
View original record COPY. Wd7/NJ5525. 5th May, 1925. Messrs. The Chloride Electrical Storage Co.Ltd., Clifton Junction, Nr. Manchester. Dear Sirs, 40/50 HP. Chassis. Lighting & Starting Battery 6-RR-5-1. Our Specn. 301.…

Scan055 Forwarding a letter from The Chloride Electrical Storage Co. Ltd. about 40/50 HP batteries.
View original record X4617 By. from Wd. c.to EFC. Wd8/NJ11.5.25. 40/50 HP.Batteries. In reply to By10/H4.5.25, I attach hereto copy of letter from The Chloride Electrical Storage Co.Ltd. dated 8th inst. I shall be glad if…

Scan056 Letter from a battery supplier discussing the pros and cons of burned-up versus bolted battery connections.
View original record COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE CO.LTD. CLIFTON JUNCTION, NR MANCHESTER. Our Reference ECM/EH. 8th May. 1925. Messrs. Rolls-Royce Ltd., D E R B Y. Dear Sirs, 40/50 h.p. Chassis -…

Scan057 Letter from The Chloride Electrical Storage Company Ltd. discussing bolted versus burned battery connections.
View original record Sheet No.2. Messrs. Rolls-Royce Ltd., Derby. individual cell has to be examined internally, it is necessary to break the connection, and facilities for re-making the connection are not always handy.…

Scan058 And deciding on the type of battery connections for the 40/50 HP car.
View original record X4617E c. EFC. BY4/H. 12.5.25. BATTERIES FOR 40/50 HP. CAR. -------------------------- Referring to Wd8/NJ. 11.5.25. and the Chloride Company's letter of the 8th inst. we think in this matter the…

Scan059 40/50 HP batteries, sent in response to a previous query.
View original record X4617 EFC.from Wd. Wd6/NJ13.5.25. Re 40/50 HP.Batteries. In response to EFC2/T12.5.25, I send you herewith copies of:- By10/H4.5.25. Wd7/W5525 I notice that By. has sent you a copy of By4/H12.5.25. Wd…

Scan060 Requesting an order for P & R and Exide 40/50 batteries for several experimental cars.
View original record X 4617. To Wd. from EFC. EFC3/T5.6.25. X.4617. RE 40/50 BATTERIES. Further to, and independently of, our EFC1/T 5.6.25, it now transpires that a number of 40/50 expl. cars (7-EX, 8-EX 9-EX and 10-EX)…

Scan061 The current prices for Exide and P&R chassis batteries.
View original record X4617 To Ms. from EFC. EFC1/T26.6.25. RE BATTERIES. X.4617. X.4642. X.4289. 6 Would you kindly let me know the prices right up to date which we are paying for the Exide and P & R 40/50 and 20 HP.…

Scan062 And suggesting the actual battery capacities for 40/50 HP and 20 HP chassis.
View original record X4617 To BY/HEB. from EFC. EFC1/T10.8.25. X.664 - BATTERIES FOR 40/50 AND 20 HP. CHASSIS. X4617 X4642 With reference to the attached we cannot give very definitely the actual capacities of the…

Scan063 Request for information on the life of P & R and Exbde batteries for Silver Ghost & 20 HP cars.
View original record X 4617 To D/BB. from EFC. EFC/T11.11.25. This will confirm that you will kindly supply us with information concerning life (technically) of present standard P & R. and Exbde batteries on customers'…

Scan064 Battery service, listing battery makes for different chassis and investigating recent customer complaints.
View original record X4617 EFC. D/BP4/CW12. 11. 25. RE : BATTERY SERVICE. EFC/T11. 11. 25. I do not know exactly what information you are seeking, in regard to the batteries referred to. If you desire to know the…

Scan065 Various instances of battery failures and defects on different chassis.
View original record -2- GDK-37. Peto & Radford battery - leaking after being in use for 2 weeks. Replaced by makers. 44-G-4. C.A.V. Battery - Travelling Inspector reports in bad condition. Owner recommended to take up…

Scan066 Clarifying interest is only in failures of current standard batteries for the 40/50 and 20 HP models.
View original record X467 To D/BP. from EFC. EFC2/T16.11.25. RE BATTERIES. Thank you for your D/BP4/CW12.11.25 . I am not interested in failures of any batteries except the present standard; that is to say :- For the…

Scan067 List of battery types for 40/50 HP and 20 HP car models.
View original record Y467 16.11.25. RE BATTERIES. 40/50 HP. Exide 6RH5. P & R. RR.11. 20 HP. Exide 6XL3/4. P & R. TBD.7. EFC.

Scan068 Report comparing the low rate discharge capacity and weight of various batteries including Exide, Fuller, and Oldham models.
View original record (Extract) x4617 -3- Contd. EFCL/T30.11.25. Exide 6RHS/1 and P & R RR.11 Batteries. x664 These are our present standards, notes upon which were given in our EFCL/T17.10.24. Typical low and high rate…

Scan069 Report comparing the performance of Fuller, Oldham, Exide, and P&R batteries based on discharge capacity tests.
View original record EFC1/T30.11.25. -4- Contd. Further, on sheet X we show a comparison of curves of the two standards and the experimental Fuller and Oldham made to the standard specification, and it will be noted that…

Scan070 The cell composition and testing status of various battery types.
View original record EFCR/T30.11.25. -5- Contd. S1, S2, S3, S4. Each of these batteries consists of three standard P & R and three standard Exide cells in alternate order. Two of these are at present on experimental…

Scan071 Reports of battery failures on 40/50 & 20 HP models and a proposal to reduce generator output.
View original record To EY. from EFC. X4617 EFC1/T24.11.25. RE BATTERY FAILURES ON 40/50 & 20 HP. X46427 I receive unofficial and vague reports from various sources of failures of batteries of the new standard types, but…

Scan072 Battery charging resistances and adjusting the control brush angle.
View original record Contd. -2- EFC1/T24.11.25. charging resistances of batteries, but I do not propose to ask for a change of control brush angle to reduce the output until I am thoroughly satisfied that such is the…

Scan073 Reports of battery failures, dynamo current, and proposed replacement procedures.
View original record X. 4617. EFC. BY22/H. 25.11.25. BATTERIES. -------------- I am not prepared to accept, on their face values, reports of our present type batteries failing in a very short period of running. Our…

Scan074 Dates of first fitting for standard batteries to 40/50 and 20 HP chassis.
View original record x4617 To NRC. from EFC. EFC5/T26.11.25. x4617 x4642 RE DATES OF FIRST FITTING PRESENT STANDARD BATTERIES TO CHASSIS. The dates which I have obtained from the Order Office at which commence the…

Scan075 Instructions for a comparison test on charging 40/50 batteries to find the effects of increased internal resistance.
View original record RR 23a (50 BKS.) (SH57. 29-6-20.) MP 22435a X. 4617. ROLLS-ROYCE LTD. INSTRUCTIONS. To: EFC Order No.: AE. 66. Customer's No. X. 4617 Date: 1st. Dec 1925. Charging of 40/50 Batteries. A comparison of…

Scan076 Instructions for testing a dynamo and battery to reach steady conditions.
View original record ROLLS-ROYCE, LTD. INSTRUCTIONS. To Order No. Customer's No. 2 prepared fully charged. A little further running was done to reach steady conditions of dynamo temperature, peak output and battery…

Scan077 Test log sheet for battery cell, dynamo, and battery voltage readings.
View original record RR 238 (150 BKS.) (SH57. 29-6-30.) MP 224388 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No. Customer's No. 19 Table Data: Headers: No, Battery Cell Volts (Columns 1-6), +, Dynamo (Temps, Volts, Amps),…

Scan078 Instruction sheet detailing the cell composition of five 'sandwich type' batteries and observations on charging an Exide SPL.1 battery.
View original record RR 238 (150 BKS.) (SH57.29-6-20.) MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To Order No Customer's No. 4 The last five batteries were of the sandwich type, the make-up of which were as below. | Battery…

Scan079 Test results comparing the voltage rise and dynamo output of various battery cells.
View original record RR 236(150 BKS.)(SHDT.29-6-20.) MP 224368 ROLLS-ROYCE LTD. INSTRUCTIONS. To ___________ 19__ Order No. ___________ Customer's No. 5 The tests show that the largest rise of voltage (and consequent…

Scan080 Letter from a battery manufacturer discussing charging rates, generator output, and cell materials.
View original record X4627 DIRECTORS. SIR ARCHIBALD. G. GOLD. F.C. GRAHAM MENZIES G.R.N. MINCHIN. WILLIAM PETO. C.R.D. PRITCHETT. T.W. PRITCHETT. Telephone Nº. RAINHAM 34. Telegrams: "PRITCHETT, DAGENHAM" CODES USED:…

Scan081 Test results for a Dynamo OA (Amended), showing cell voltages and peak outputs when run on various batteries with chassis wires.
View original record E.T.C. X4617 X.8660. DYNAMO OA (Amended) (Run on various batteries with chassis wires) Table Headers: Row 1: Battery. | Cell voltages. | Total volts. | Peak output hot. | Peak cold. Row 2: | - 1 | 2 |…

Scan082 Comparing the performance of an Exide 6RR5 battery and a P & R RR.11 battery on a 40/50 Chassis.
View original record Expl. Report. X4617 Ref. EFCl/T24.3.26. To R. from EFC. c. Da. E. c. CJ. Ev. c. Rg. EP. 40/50 CHASSIS. X.4617. UP-TO-DATE STANDARD EXIDE 6RR5 AND P & R. RR.11 BATTERIES. Please find attached copy of…

Scan083 The condition of batteries upon opening, noting their concurrent failure points and ongoing comparative tests.
View original record Contd. -2- EFC/T24.3.26. In some ways the condition of the batteries on opening up was rather satisfactory, mainly in the fact that they were largely on the point of failing concurrently in the…

Scan084 Comparison of the general behaviour of P & R RRI1-1 and Exide 6RR5-2 40/50 HP standard batteries.
View original record EFC. JC.15. COMPARISON OF GENERAL BEHAVIOUR OF P & R RRI1-1 & EXIDE 6RR5-2. 40/50 HP. STANDARD BATTERIES. Both of these batteries were received on 16.6.24 in a fully charged condition and were put…

Scan085 The life testing and condition analysis of P & R and Exide batteries following bench and road use.
View original record 17.3.26. -2- JC.15. About one month after this both batteries were put on bench life test consisting of alternating overcharges and partial discharge; the P & R remaining in for 8 months and the Exide…

Scan086 The condition of cells and plates, noting corrosion, cracking, and damage to various components.
View original record JC.15. -3- Contd. O.K. The box was generally good but the cycle stay spokes were corroded and three of the nuts for tightening these were lost, having worked loose. The spokes were covered with wood…

Scan087 The condition of Exide batteries after testing, comparing them to P & R batteries.
View original record JC.15. -4- Contd. Exide. The positive plates had lost a large amount of paste in some cases leaving a bare grid, but the grids remained quite strong, especially in the peripheries. The negative plates…

Scan088 Hand-drawn bar chart comparing the mileage performance of EXIDE and P&R batteries on a chassis before failure.
View original record EXIDE. P & R. 15,544 miles. on chassis 2 cells failed Dismantled. 28,476 miles on chassis 2 cells failed Dismantled.

Scan089 Phantom accumulator, proposing a two-unit 6-volt battery system and comparing battery brands.
View original record To EFC. Hs. }From R. Da. BY. c. to BJ. LHS. PN. X4617 R8/M4.5.26. PHANTOM ACCUMULATOR. X.8535. X.4617. It is very desirable that our accumulators are fitted in the frame - better place to carry them…

Scan090 Experiments on the Phantom battery, including different separators and configurations.
View original record X4617 To R. from EFC. c. BJ. PN. c. Ds. E. EFC3/T28.5.26. RE PHANTOM BATTERY. VBS39 X4617 Reference your R8/M4.5.26 we understand that a scheme for the separation of the battery into two portions is…

Scan091 Problems of battery over-charging and proposing an automatic voltage-operated cutout.
View original record X4617 PN13/DN9.6.26. To Hs. from EH. FROM PN c. R. BJ. H &CBW. IGNITION. X.8617. X.8680. X.8660. X.8780. In connection with the upkeep of batteries on our cars, statistics indicate that considerably…

Scan092 Customer's battery overcharging issues and the urgent proposal to add a charge indicator to the instrument board.
View original record -2- Contd. The renewed consideration of the above arises as a result of criticisms received from one of our oldest Rolls-Royce owners - Mr. Sidney of Hampstead, who has had a number of Silver Ghosts,…

Scan093 Battery design, recommending more space above the plates to prevent flooding.
View original record X4617 Extract from E1/M28.6.26. 12-EX - EAC.8 CHASSIS. X.3535. 4617. BATTERY. There should be more room above the plates in the battery from the top of the liquid to the vent plugs. When the battery…

Scan094 Reduction of charging terminal potential for Exide batteries.
View original record X46178 To Wd. from EFC. EFC4/T21.6.26. RE CHARGING P.D's of EXIDE BATTERIES. X46428 We would like you to write to The Chloride Electrical Storage Co. to enquire if they are doing anything with a view…

Scan095 Results of charging Potential Difference and Electromotive Force tests on six chassis batteries.
View original record To R. from EFC. c. BJ. PN. Wor. c. E. Da. Rg. c. Ev. EP. X4617 EFC1/T26.6.26. RE BATTERIES. X4617 X4642 X664 As referred to in the covering note EFC3/T16.6.26 of our EFC1/T12.6.26, we have now…

Scan096 Battery charging characteristics, internal resistance, and generator output control.
View original record Contd. -2- EFCl/T26.6.26. than the Exide. Messrs. Peto & Radford have, however, recently been working on this problem considerably and have informed us that they have reduced this charging P.D. and…

Scan097 Battery charging characteristics, electromotive force, and external dynamo control.
View original record Contd. -3- EFCL/T26.6.26. This line AB and the deductions to be derived therefrom are in connection with the desirability of avoiding the excessive voltage on the chassis electrical system by the…

Scan098 Proposal for an experiment to test charge a battery using an invariable external resistance and sustained voltage.
View original record Contd. -4- EFC1./T26.6.26. because it does have some bearing on the question of the satisfactory use of a generator and controller subject to ideal control from the generator point of view. Perhaps…

Scan099 Series of six graphs showing voltage vs. amperage curves for different electrical cut-outs and batteries.
View original record Graph 1 (Top Left): Title: SPEED ALPHA OPEN END Line Label: TRUE LINE Y-Axis: VOLTS X-Axis: AMPERES Graph 2 (Top Right): Title: TAPERED MAIN STANDARD CUT-OUT Y-Axis: VOLTS X-Axis: AMPERES Graph 3…

Scan100 Experiment on battery charging characteristics.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 X4617 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.6. Date: 15-7-1926 Order No.: JC37 Customer's No.: Re experiment on battery charging to characteristic V=17 -…

Scan101 Instruction sheet detailing battery charging and discharging test results.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 308975 ROLLS-ROYCE LTD. INSTRUCTIONS. To JC37 19 Order No. Customer's No. which remained constant for 3 hours. The battery was then again discharged as before a…

Scan102 Instructions detailing a series of battery charge and discharge tests, noting a fault with cell number 3.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. III To _________ 19__ Order No. JC 37 Customer's No. _______ On discharge only 51.6 ampere hours were obtained, this is less…

Scan103 Instructions and observations regarding a cell charging test.
View original record RR 23B (150 BKS.) (DB 461-8-12-24) MP 305975 ROLLS-ROYCE LTD. INSTRUCTIONS. To 19 Order No. IC 37 Customer's No. This cell showed positive & weakness on the cadmium. On the discharge taken on 9-7-26…

Scan104 Wire confirmation from Royce to Hives requesting a twelve-volt battery.
View original record CONFIRMATION OF WIRE. X4617 HIVES. ROYCAR. DERBY. WW. 14.8.26. IF CONVENIENT BRING TWELVE VOLT FORTYFIFTY EXIDE OR PETO AND RADFORD BATTERY. ROYCE. (RECEIVED) 16 AUG 1926 DICKINSON BOND

Scan105 The incorrect and dangerous installation of battery cables on chassis using coachbuilder-made battery boxes.
View original record To EY. from EFC. [Handwritten]: X4617 EFC5/T20.10.26. [Handwritten]: Y4617 X. 8535 CABLE CONNECTIONS TO BATTERY WHEN BATTERY BOX OF COACHBUILDERS' MAKE IS USED. Inspecting a number of customers'…

Scan106 Continued page of a document describing a battery maintenance procedure.
View original record -2- Contd. For one thing, this prevents the battery being efficiently sponged over the top with water, as it should be when there is any acid about. EFC.

Scan107 Experiments on charging batteries to the characteristic V = 17 - .25 A.
View original record To R. from EFC. c. PJ. E. c. Da. PN. c. Ey. EP. Mr. McKinnon. Mr Mudie. X467 EFC5/T10.1.27. EXPERIMENTS ON CHARGING BATTERIES TO THE CHARACTERISTIC V = 17 - .25 A. One or two experiments have been…

Scan108 The performance tests of various battery types, detailing charging and discharging characteristics.
View original record -2- Contd. On discharge the battery now gave 65.3 ampere-hours. The second was a case of a standard Exide battery with the exception of having threaded rubber separators (one of our experimental…

Scan109 Battery charging characteristics and discharge capacity measurements.
View original record -3- Contd. Then the battery was charged to thee characteristic and the maximum sustained P.D. was 15.1. On discharge 58.5 ampere-hours were obtained, and on a repetition of charge to the…

Scan110 The low and high rate discharge curves of Exide and P & R batteries for the 40/50 HP chassis after extensive testing.
View original record X4617 To R. from EFC. EFC1/T26.2.27. c. BJ. PN. E. c. Da: Wor. EP. c. Ry. Roy. Wd. 40/50 HP. CHASSIS. EXIDE & P & R BATTERIES. We are issuing low and high rate discharge curves of present standard…

Scan111 Performance of alternative 12-volt batteries against the standard battery.
View original record EFCL/T26.2.27. It is now extremely improbable that any alternative 12-volt batteries of the same size and weight can put up a better all round performance than is now shewn by our own standard…

Scan112 Bench tests for an S2 battery (155) removed from chassis 8-EX after 13,377 miles.
View original record EFC. JC.74. RE TESTS ON S2 BATTERY (155). This battery was removed from chassis 8-EX for bench tests to be taken after having run 13,377 miles. On low rate discharge through a constant external…

Scan113 The road and bench test results for a BX battery (159).
View original record EFC. JC.75. RE TESTS ON BX BATTERY (159). This battery has now completed 8231 miles on the road. On bench tests the results were good, the high rate being much improved. On low rate discharge through…

Scan114 Graph plotting electrical performance data from a test conducted after 13,377 miles.
View original record 15 . 2 . 27 155 52 75 A. HRS. 101 LBS AVERAGE AMPERES - 6.24 HOURS - 10.25 AMPERE HOURS - 64.0 .634 1.80W AFTER 13377 MILES

Scan115 Chart showing electrical performance data recorded after a mileage test.
View original record 21 - 2 - 27 159 5X 75 A. HRS. 103 LBS AVERAGE AMPERES = 6.34 HOURS = 11.0 AMPERE HOURS = 69.7 .675 1.80 W. AFTER 8231 MILES

Scan116 Graph showing continuous high rate discharge curves for chassis batteries 155 and 159.
View original record 40-50 H.P CHASSIS BATTERIES CONTINUOUS HIGH RATE DISCHARGE CURVES THROUGH INVARIABLE EXTERNAL RESISTANCE OF .100 O.H.M. BATTERIES - 155, 159 AMPERES OR TEN TIMES TERMINAL VOLTS. TIME (MINUTES) S2 101…

Scan117 Comparing the longevity, durability, and repair costs of different car batteries.
View original record [Handwritten top right] X4617 [Handwritten top left] EFC [Handwritten top left, diagonal] This may mean that we must have had headlamps compared when I gathered how the batteries compared under To BY.…

Scan118 Letter to a battery supplier inquiring about modifications and discussing the results of comparative life tests on 'sandwich' batteries.
View original record X.4617. Sent also to The Exide Co. EFC2/T. EFC1/T. 4th October, 1927. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, Would you please say if you have made any modifications…

Scan119 Letter discussing the expected failure timeline and inspection of batteries.
View original record -2- Contd. These batteries must, however, ultimately fail and conceivably will do so within the next 12 months. At the time of inspection it will be interesting to know that the results will be…

Scan120 Experiments for charging a standard battery to a specific charging characteristic.
View original record X4617 To R. from EFC. c. E. Da. c. P.N. Wor. c. BY. BJ. EFC5/T10.10.27. EXPERIMENTS ON CHARGING A STANDARD BATTERY X664✓ TO A CHARGING CHARACTERISTIC. Reference of previous report on this subject…

Scan121 Conclusion on battery charging for regulator-controlled or auto-switch systems where the maximum voltage reaches 16.0.
View original record Contd -2- EFCl/T10.10.27. This would appear to indicate, therefore, that in any regulator controlled or auto switch system in which the maximum voltage can reach 16.0, full charge will be ultimately…

Scan122 Battery charging tests using a modified characteristic of V = 16 - .15 A.
View original record EFC. JC.92. RE BATTERY CHARGING TO MODIFIED CHARACTERISTIC OF V = 16 - .15 A. Tests on charging to a modified characteristic of V = 16 - .15 A were carried out on a standard P & R RELL-3 battery. The…

Scan123 Improvements to vehicle batteries and lighting systems for parking.
View original record X4617 To Hs) from R. EFC.) c. BJ. Worl C. CWB. SG. RE BATTERIES. R1/M11.10.27. X.8780. X.4617. I understand bigger batteries are being fitted to R-R cars for theatre work and parking. Two or three…

Scan124 Graph showing battery terminal voltage drop over time for various tests on a Continental Phantom III chassis.
View original record X4617 WD. DERBY CHASSIS TEST DEPT CONTINENTAL PHANTOM III CHASSIS (1938) PROGRAMME 5 EXPLOSION WHISTLE TESTS ON CHASSIS BATTERY - TOP GEAR - (DRY. COLD) VOLTS AT BATTERY TERMINAL VOLTS TIME (MINUTES)…

Scan125 Letter to supplier Peto & Radford concerning issues with battery vent plugs on 40/50 HP cars.
View original record X4617P c. Roy. c. BY. c. Mailing. EFC5/T. 5th July, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, LONDON, S.W.1. Dear Sirs, X4617S P & R. Batteries for 40/50. R.R. CARS. We are writing to you…

Scan126 The failure of P&R cells in 40/50 type Sandwich and 20 HP batteries, including life test results.
View original record -2- Contd. Failure of P & R cells in our 40/50 type Sandwich Batteries and in P & R. 20 H.P. Battery. A number of references have been made to the former in previous correspondence. In this connection…

Scan127 Observations on battery cell failures and the history of a 20 HP battery life test.
View original record -3- Contd. The intact elements of one of these cells (case broken away) are still in a condition which would permit of our sending them to yourselves, as no doubt you will desire. Further observations…

Scan128 Analysis of P & R battery cell failure due to shorting, with a suggested design improvement for the separators.
View original record EFC. COPY 27.6.28. JC.109. FAILURE OF P & R CELLS. Two P & R cells have failed by shorting, one in S1 battery (154) and the other in SY battery (170). These faulty cells have been removed and an Exide…

Scan129 The failure of a battery cell due to shorting.
View original record EFC. JC.112. COPY 4.7.28. Re P & R TBD7-10 Battery (158) No.6 cell (+) has failed by shorting in this battery. The battery has been in the E.M.S. all its life and is now over three years' old. This…

Scan130 Graphical log from a continuous current battery charging test for an 'Exide TR' battery.
View original record 6-7-26 Exide TR 75 a.h. 100 lbs. X46/7 charged at a continuous current of 6 amperes. Average amperes = 6.31 Hours = 9.2 Amper Hours = 58.1 .581 1.80w REGD. TRADE MARK 'MEGGER'

Scan131 Battery charging test chart for an Exide TR battery, recording amperes over time.
View original record 8·7·26 Exide TR 75 a.h. 100 lbs Charged on a fixed PD of 17 volts with a .25 ohm resistance in series. REGD. TRADE MARK "MEGGER" Average amperes = 6.38 Hours = 8.1 Ampere hours = 51.6 .5/6 1.80w

Scan132 Chart recording the electrical characteristics of an Exide TR battery during a charging test.
View original record 9-7-26 Exide TR 75 a.h. 100 lbs charged on a fixed PD of 17 volts with a .25w resistance in series. Average amperes = 6.36 Hours = 7.8 Ampere hours = 50.4 .516 1.80w REG'D. TRADE MARK 'MC COURT'

Scan133 Chart recording the test results of an Exide TR battery charge.
View original record 14-7-26 Exide TR. 75 a.h. 100 lbs. Charged at a continuous current of 6 amperes. Average amperes - 6.44 Hours - 8.75 Ampere hours - 56.3 .563 1.80w TRADE MARK "MCCGERT"

Scan134 Graphical record of an electrical accumulator discharge test.
View original record X461/ 1-7-26 175. P&R RR11-2 75ak 97 lbs Charged at a continuous current of 6 amperes. Average amperes - 6.3 Hours - 10.3 Ampere hours = 65.0 -.667 1.80v REGD TRADE MARK "MEGGER"

Scan135 Battery charging performance test chart recorded on 'Megger' graph paper.
View original record 3-7-26 175 P&R RR11-2 75 a.h. 97 lbs. Charged on a fixed PD of 17 volts with .25w resistance in series. Average amperes = 6.34 Hours = 10.3 Ampere hours = 65.3 673 1.80w REG'D TRADE MARK 'MEGGER'

Scan136 Letter regarding battery design for a 40/50 HP chassis, discussing the use of bolted connections over burned-up ones.
View original record X.4617. COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE CO. LIMITED, CLIFTON JUNCTION, NR. MANCHESTER+ Our reference WTC/AP. 8th February 1924. Messrs. Rolls-Royce Limited., DERBY. Dear Sirs,…

Scan137 Supply and dimensions of batteries for the 40/50 HP Chassis.
View original record By. from Wd. c.to EFC. c.to Mp. X. 4617. Wd1/NJ3.3.24. X.4617. 40/50 H.P.Chassis - Batteries. I confirm mine Wd3/NJ29.2.24. We are now in receipt of a letter from the Chloride Electrical Storage…

Scan138 Form for recording the routine treatment of car lighting and starting batteries.
View original record X.4617E. ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 8-7-24 Battery under treatment:- Exide 6RR5/1/2 Rated capacity:- 60 ampere-hours. Received charged or uncharged:- Charged.…

Scan139 Battery charging, weight, and cell density measurements.
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…

Scan140 Test log sheet detailing battery charging cycles, cell densities, and performance data.
View original record (3) A Contd. Date (13) Third charge equivalent to average current of 6.0 amperes. for 20. hours. i.e. ampere-hours = 120 12-7-24 to 15-7-24 (14) Cell densities. (1) 1290 (4) 1290 (2) 1290 (5) 1290 (3)…

Scan141 Letter from The Chloride Electrical Storage Co. Limited regarding battery connections for a 40/50 HP Chassis.
View original record X.4617 COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE CO.LIMITED. CLIFTON JUNCTION, NR. MANCHESTER. Our Reference WTC/AP. 8th February. 1924. Messrs. Rolls-Royce Limited., D E R B Y. Dear Sirs,…

Scan142 Continuation page of a letter from The Chloride Electrical Storage Co. Ltd. regarding terminal and connection details.
View original record Continuation Page No.1. Messrs. Rolls-Royce, Limited. D E R B Y. As requested, we shall be pleased to send Messrs. Peto & Radford the information regarding dimensions, etc., of the terminals and…

Scan143 Arrangement to stamp chassis numbers and identification letters on Exide batteries.
View original record EP. From Wd. (crossed out) c. to By. (crossed out) c. to EFC. (underlined) c. to BP. (crossed out) X4617 Wd4/WJ18.11.24. Exide Batteries. I attach hereto (for By. and EFC) copy of EP/Thn1/H12.11.24. I…

Scan144 Requesting Exide stamp chassis numbers on the top of batteries to facilitate testing.
View original record Wd. COPY. EP/Thn1/H12.11.24. Re Exide Batteries. On the Peto & Radford batteries, the chassis number for which the battery is supplied is stamped on the battery. It would greatly facilitate our work…

Scan145 Electrical experimental record sheet for an Exide 6RR5/1/1 Battery (145).
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. Exide 6RR5/1/1 Battery (145) x4617E Date on. Location. Date off. REMARKS. Miles Reading Start. Miles Reading Finish. Miles covered. Total miles. 16-6-24 Lab.…

Scan146 Order for two specially configured Exide batteries for the Experimental Department.
View original record To Wd. from EFC. X4617-8 EFC2/T6.4.25. RE BATTERIES. X4617-8 & X4642-3 { Would you kindly order up for the Expl. Dept. two of the up-to-date Exide batteries (one 40/50 and one 20 HP.) but made up with…

Scan147 Requesting to replace an Oldham battery with a standard Exide battery on chassis 98-NK.
View original record To RHC. from EFC. c. GWH. X4617E EFC3/T20.4.25. X.4617. STANDARDISED 40/50 BATTERY. When 98-NK is being got ready for France, we want to put on this chassis an up-to-date standard Exide battery 6…

Scan148 Letter regarding a reply from The Chloride Electrical Storage Co. Ltd. about the manufacture of two battery types.
View original record EFC. from Wd. Y4617E Wd12/NJ21.4.25. Re Batteries. Yours EFC2/T6.4.25. We are in receipt of a letter from The Chloride Electrical Storage Co.Ltd. dated 20th inst. as follows:- "In reply to your letter…

Scan149 Ordering specific battery cells for a comparison experiment.
View original record XU617E To Wd. from EFC. EFC7/T23.4.25. RE BATTERIES. X4617 8/1 P Referring to your Wd12/NJ21.4.25, would you kindly advise the Chloride Co. that contrary to what we think we previously stated, we…

Scan150 Instructions detailing the results of bench tests on an Exide 6RRS/1/2 battery.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049 X 4617E. 108666 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.B. 22-5-1925 Order No.: Customer's No.: X4617E Re: JB.104. Re Bench Tests of Exide 6RRS/1/2…

Scan151 Instruction sheet detailing the results of an experimental battery bench test after 10 months.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049) 108667 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II. To Order No. Customer's No. Re J.B.104. to those obtained when this battery was put through our Exptl Routine…

Scan152 Receipt and ordering of experimental Exide battery cells.
View original record To Wd. from EFC. X4617E EFC1/T5.6.25. X.4617E. EXPERIMENTAL EXIDE BATTERY. 40/50. Reference our EFC7/T23.4.25, we have now received the two single P & R RR.11 cells in good condition. We should be…

Scan153 Scheduled visit from Mr Mc.Kinnon of the Chloride Co.
View original record EE EEC. ROY/MSS/P. 10. 5. 25. X4617B Kindly note that Mr Mc.Kinnon, of the Chloride Co., is paying a visit to the Works on Friday morning next, 12th instant. Please state whether there are any points…

Scan154 The progress of two special Exide batteries with a specific cell design.
View original record To ROY. from EFC. X467/8 EFC1/T11.6.26. X.4617E. EXIDE BATTERIES. Answering your ROY/Ms5/P10.6.25, the only enquiry we wish to make of Mr. McKinnon is with reference to the progress of the two special…

Scan155 Letter to The Chloride Elec. Storage Co. Ltd. requesting a change from a quarter-turn plug to a screwed plug for the RR.5 type batteries.
View original record c. Mailing Dept. c. WT. c. EFC. X4617 E BY/10/H. 11.6.25. -------- June 12th, 1925. Friday. Messrs The Chloride Elec. Storage Co.Ltd. Clifton Junction, Nr.Manchester. Dear Sirs, Referring to your…

Scan156 The cancellation of a battery order and the fitting of new Exide and sandwich batteries to specific experimental chassis.
View original record X4617E To RHC. from EFC. EFC7/T17.6.25. X.4617F 40/50 BATTERIES. This will cancel our EFC2/T20.4.25, asking for an up-to-date Exide battery to be fitted to 98-NK. In place of this, an up-to-date Exide…

Scan157 Diagrams illustrating different configurations for 40/50 Sandwich Batteries.
View original record X.4617E 17.6.25. 40/50 SANDWICH BATTERIES. No. Label. BATTERY. Case. 154. S1. P 155. S2. E 156. S3. P 157. S4. E

Scan158 Communication with Chloride Electrical Storage Co Ltd. about a battery order.
View original record X.4617 EFC EFC. Wd/AW2/W25.6.25. We have again been in communication with the Chloride Electrical Storage Co Ltd., Clifton Junction, MANCHESTER, with regard to the Batteries ordered on your memo…

Scan159 Letter from The Chloride Electrical Storage Co. regarding incorrect information and delivery delays for two special batteries.
View original record X. 4617E. COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE CO. CLIFTON JUNCTION. MANCHESTER. AES/NS. 24th June.1925. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Dear Sirs, Ref.…

Scan160 Peto & Radford cells received in error and seeking confirmation on a special 6RR5 Exide battery.
View original record X4617-8 To Wd/AW. from EFC. EFC1/T27.6.25. RE BATTERIES. X4617-8 With reference to the two Peto & Radford cells recently received in error, will you kindly have these forwarded for use in this Dept.…

Scan161 To arrange a meeting with the Chief Engineer of Chloride Electrical Storage Co. Ltd. regarding Exide Batteries.
View original record 1467 E By from Wd. c.to EFC. c.to Hm. c.to EWT.(Test Dept). c.to EP. c.to D/BP. Wd1/NJ2.10.25. Exide Batteries. Mr.McKinnon, Chief Engineer of the Chloride Electrical Storage Co.Ltd., Clifton…

Scan162 EFC to Wd. requesting an order for a standard 40/50 Exide single cell battery.
View original record X4617 E To Wd. from EFC. EFC3/T2.11.25. X.4617 - 40/50. EXIDE BATTERIES. Will you kindly order up to O/N.54733 one standard 40/50 Exide single cell, in a fully charged condition. EFC.

Scan163 Letter to Mr. McKinnon requesting feedback on premature failures of chassis batteries to aid in developing generator characteristics.
View original record X4617 E EFC6/ T 26th November 1925. Mr. McKinnon, Clifton Junction, Nr. Manchester. Dear Mr. McKinnon, Re WH Batteries. Mr. Platford has expressed a desire to have one of these at the special price…

Scan164 Letter discussing Exide batteries and generator systems for the 40/50 and 20 HP chassis models.
View original record -2- Contd. which would enable the battery to suit the peculiarities of our generator system. I have as yet no real official information of any failure of the new Exide 6RR5 on the 40/50 chassis, and…

Scan165 Letter from Chloride Electrical Storage Co. regarding lending a battery to Mr. Minchin for comparison, while disassociating from his findings.
View original record X46178 ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. LONDON OFFICE, 137, VICTORIA STREET, S.W.1. CLIFTON JUNCTION. NR MANCHESTER. TELEPHONES -…

Scan166 Test results for an Exide 6RR5-1-3 battery, noting poor performance.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X.4617E. 108716 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To E.T.L. Date 14-1-1926 Order No. Customer's No. Re TB144 Re Tests on Exide 6RR5-1-3 Battery(174) This…

Scan167 Letter from The Chloride Electrical Storage Co. Ltd. regarding the beneficial effect of wood separators in batteries.
View original record X4617E COPY OF LETTER FROM:- THE CHLORIDE ELECTRICAL STORAGE CO.LTD., CLIFTON JUNCTION Nr. MANCHESTER. ECM/EH. 26th January, 1926. J. Whitehead Esq., Messrs. Rolls-Royce Ltd., Derby. Dear Mr.…

Scan168 Test results for terminal potential difference of standard Exide batteries for 20HP and 40/50HP models.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049 X4617 E 108714 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.T.G. Order No.: Customer's No.: Date: 11 - 1 - 1926 Re: J.B.17.D. Terminal PDs of Standard Exide…

Scan169 Inspection report on the failure of an Exide GRR5-2 battery after extensive road use.
View original record RR 238 (150 BKS.) [D3 431-B 12 24] MP JC6975 X 4617.E. ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.B. 10-3-1926 Order No. J.C 14. Customer's No. X.4617E Re Failure of Exide GRR5-2 Battery (146) This battery…

Scan170 Inspection report on the condition of battery cells, detailing sediment build-up and plate degradation.
View original record RR 236 (150 BKS.) (DB 431-B 12 24) MP JC6973 ROLLS-ROYCE LTD. INSTRUCTIONS. II To Order No. J.C.14. Customer's No. free to vibrations. Condition of cells Both of the cells were in much the same…

Scan171 Instructions detailing the reasons for a component failure involving cells, plates and separators.
View original record RR 239. (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. III 19 To Order No. J.C.14. Customer's No. were very bad, the ebonite having chafed away leaving only just a framework. The…

Scan172 Letter to a battery storage company regarding the inspection and testing of a 10,000 mile chassis test battery.
View original record X46178 c. Wd. EFC2/T. 30th March, 1926. Messrs. The Chloride Elec. Storage Co.Ltd., Clifton Junction, Nr. Manchester. For the attention of Mr. E.C.McKinnon. Dear Sirs, This will confirm the visit of…

Scan173 Detailed breakdown of the features and specifications of various Exide batteries delivered over time.
View original record To EFC. JC.16. X4617E 30.3.26. EXIDE BATTERIES. V607 X4617E In answer to Wd11/NJ17.5.26 the following are the detailed particular features of the various Exide batteries delivered to us. 6-BXE-5.…

Scan174 Electrical experimental record sheet for an Exide 6RR5/1/2 Battery.
View original record Top Reference: x4607 E Title: ELECTRICAL EXPERIMENTAL RECORD SHEETS. Subject: Exide 6RR5/1/2 Battery (146) Right Reference: x4617E TABLE DATA: Column Headers: Date on, Location, Date off, REMARKS,…

Scan175 Electrical experimental record sheet for the testing and failure analysis of an Exide 6RR5-1-2 battery.
View original record II ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617E Exide 6RR5-1-2 Battery (146) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading Finish. | Miles covered. | Total…

Scan176 Letter from a battery supplier discussing the premature deterioration of ebonite in an Exide battery and arranging for further investigation.
View original record ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. LONDON OFFICE, 137, VICTORIA STREET, S.W.1. CLIFTON JUNCTION, NR MANCHESTER. TELEPHONES:- PENDLETON…

Scan177 Dispatch of two standard Exide battery cells from a 10,000-mile test battery for inspection.
View original record X46178 To Wd. from EFC. EFC4/T8.4.26. X.4617 STANDARD EXIDE BATTERY. In accordance with the arrangements made with Mr. McKinnon, herewith we hand to you two standard Exide cells taken from the 10,000…

Scan178 Requesting the return of an experimental sandwich battery from chassis 11-EX for comparative analysis.
View original record W/S. X4617 E EFCL/T24.4.26. CWB. from EFC. Experimental Chassis 11-EX. There was on this chassis an experimental sandwich battery of different cells. From reports now received it is understood that…

Scan179 Enquiry with Chloride Elec. Storage Co. about reducing the charging potential difference of Exide batteries.
View original record V46178 To Wd. from EFC. EFC3/T6.7.26. RE P.D'S OF EXIDE BATTERIES. With reference to our enquiry to the Chloride Elec.Storage Co. as to whether they are doing anything with a view to reducing the…

Scan180 Typed memorandum regarding the rescheduling of a visit from The Chloride Electrical Storage Co. Ltd. concerning Exide batteries.
View original record X4617 E To EFC. from Wd. Wd1/K20.7.26. Re P.D's of Exide Batteries. X4617 X4642 Referring to yours EFC4/T21.6.26 and EFC3/T6.7.26 I wrote The Chloride Electrical Storage Co.Ltd., on the 16th inst.…

Scan181 Letter to a battery supplier discussing potential experiments to improve chassis battery charging.
View original record X4617E c. Wd. EFC3/T. 21st July, 1926. Messrs. The Chloride Elec.Storage Co.Ltd., Clifton Junction, Nr. Manchester. For the attention of Mr. E.C.McKinnon. X4642 E Dear Sirs, Referring to our recent…

Scan182 Letter discussing battery experiments, charging terminals, and external dynamo control.
View original record EFC3/T. -2- Contd. nature as to interfere with efficient separation. Unless you are confident that nothing better can be done than at present, we suggest that you make experiments in this direction,…

Scan183 Letter from The Chloride Electrical Storage Company Ltd. acknowledging receipt of a letter.
View original record X 4617 THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. TELEPHONES - PENDLETON 481 (6 LINES). TELEGRAMS - CHLORIDIC. PENDLEBURY. CODES - BENTLEYS. LIEBERS. A.1. AND A.B.C. (4TH & 5TH EDITIONS). LONDON…

Scan184 Letter reporting on the performance of Exide and standard P & R battery cells during a 10,000-mile test on a New Phantom chassis.
View original record X4617E EFCL/T. 2nd. Sept. 1926. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. X4617P Dear Sirs, On our latest 10,000 mile test chassis - a New…

Scan185 Letter discussing battery cell performance and acid retention during a 10,000-mile test in France.
View original record -2- Contd. From this it would appear that your efforts to obtain all the available space for element volume have resulted in your leaving too little head room for acid volume. On inspection by the…

Scan186 Dimension discrepancy between P & R and Exide batteries.
View original record To HY. from EFC. C. Wd. X4678 EFC3/T27.10.26. RE P & R BATTERIES. With reference to EY15/H27.10.26, we entirely agree with the first paragraph. There seems, however, to be an impression that the…

Scan187 Battery re-tests, detailing discharge performance and improvement over previous poor results.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 X. 4617E. ROLLS-ROYCE, LTD. INSTRUCTIONS. To. C.T.L. Order No. IC 58 Customer's No. X4617E Re Tests on baccle GRR5+-3 (174) This battery has been removed…

Scan188 Test report on an Exide 6RR5-3 battery, detailing low and high rate discharge results.
View original record R.R. 238 (150 BKS.) (DB 431-8 12 24) MP 306975 X4617 E ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.T.E. Date: 11-10-1927 Order No. J.C. 99. Customer's No. X4617E Re Tests on Exide 6RR5-3 Battery (174) This…

Scan189 Letter from a battery supplier regarding battery modifications, life expectancy, and a suggestion for new tests.
View original record Y46178 ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:- PENDLETON 481 (6 LINES) TELEGRAMS:- CHLORIDIC, PENDLEBURY. CODES:- BENTLEYS,…

Scan190 Instruction sheet detailing the results of a battery test.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. To E. & C. Order No. J.C.134 Customer's No. X4617E. Re Test on Exide 6KRS+3 Battery (174) This battery has been on our bench test 36 months & has run 9,262 miles On Low…

Scan191 Graph chart recording an Exide battery discharge test.
View original record 45. 10-7-24. 146. Exide 6.R.R.S/1/2 103 lbs. 80 a.h. E Average amperes = 6.5 Hours = 13.33 Ampere hours = 86.6 -.840 1.80w

Scan192 Chart recording an Exide battery performance test.
View original record 51 18-7-24 146 Exide 6RR5/1/2 103 lbs 80 a.h. Average amperes = 6.63 Hours = 12.16 Ampere hours = 80.6 .783 1.80v CHART by MEGGER

Scan193 Chart recording of a discharge test for an Exide battery, model 6RR5/1/2.
View original record 21-5-25 146 Exide 6RR5/1/2 103 lbs 80 a.h. Average amperes: 6.4 Hours = 12.75 Ampere hours = 81.6 .79v. 1.80v REGD TRADE MARK 'MEGGER' B.104 AHVIVE 22.5.25

Scan194 Letter from The Chloride Electrical Storage Company regarding a special Exide battery and a proposed visit.
View original record X4617E. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:- PENDLETON 481 (6 LINES) TELEGRAMS:- CHLORIDIC, PENDLEBURY. CODES:- BENTLEYS,…

Scan195 Examination report on the failure of a cell in an S.S. Batteny (18a) fitted with Threaded Rubber Separators.
View original record E.F.E. X4617.E. JD10. 24-6-29 X4617 Re Failure of cell in S.S Batteny (18a) A Exide cell fitted with Threaded Rubber Separators (no 5) has failed in the above battery. The cell has been opened up for…

Scan196 Cell failure caused by growth bridging across the positive plates.
View original record ID10. 2 & this growth bridging across to the positive plates causing a partial short. This cell has ran 14,767 miles & has been on our bench life test 19 months & is the first failure to occur on the…

Scan197 Comparison of two types of battery terminals from Exide cells, recommending the original type.
View original record Typed Text: X4617E. By Mx/MdM/T3.9.29. RE BATTERIES. We send you herewith samples of Battery Terminals from Exide cells. No.1 is as fitted on original type batteries. It will be noted that the…

Scan198 Faulty modified fastening on Exide battery terminal lugs.
View original record c. MX/McM. X 4617E. EXIDE BATTERY TERMINAL LUGS. Referring to MX/McM7/T3.9.29, which has been handed to me for attention, we have not ourselves known a similar case of the terminal stud not being…

Scan199 Arranging for two terminal studs to be sent to the Chloride Electrical Storage Co. Ltd.
View original record X4617E Roy. from EFC. c. G/Mt. EFC3/AMO.9.29. We are sending into the Stores two terminal studs. Will you please arrange for these to be sent to the Chloride Electrical Storage Co.Ltd. addressed for…

Scan200 Letter from The Chloride Electrical Storage Company regarding battery terminal studs and positive plates.
View original record X4617E ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:— PENDLETON 481 (6 LINES) TELEGRAMS:— CHLORIDIC, PENDLEBURY. CODES:— BENTLEYS,…

Scan201 Letter to The Chloride Electrical Storage Co. Ltd. arranging a visit for Mr. Mckinnon.
View original record X4617 E c. Mailing. EFO6/AD. 13th September, 1929. The Chloride Electrical Storage Co.Ltd., Clifton Junction, Nr. Manchester. Dear Sirs, We thank you for yours ECM/LJ. of the 12th inst. containing the…

Scan202 Letter from The Chloride Electrical Storage Company acknowledging a letter and confirming a visit to Derby.
View original record X4617E. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:— PENDLETON 481 (6 LINES) TELEGRAMS:— CHLORIDIC, PENDLEBURY. CODES:— BENTLEYS,…

Scan203 Letter from Chloride Electrical Storage Company Ltd. arranging for their Chief Designer to visit Rolls-Royce to study battery cells.
View original record X4617E. ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:— PENDLETON 481 (6 LINES) TELEGRAMS:— CHLORIDIC, PENDLEBURY. CODES:— BENTLEYS,…

Scan204 Test results for an Exide 6RRS.1-3 Battery, detailing its performance and age.
View original record E.F.C. X4617E. J.D.40. 17-11-29. X4617E. (174) Re Tests on Exide 6RRS.1-3 Battery This battery has run 9,262 miles & has been on our bench life test 46 months & is now 4 years 3 months old. On low…

Scan205 Correspondence regarding a complaint about weak cell cases on 40/50 HP Chassis Exide Batteries.
View original record X4617E. BWT/Skn. c. to EFC. ROY/JT10/HP.29.1.30. 40/50 HP. Chassis Exide Batteries. With reference to your note EWT/Skn10/T22.1.30 complaining of trouble due to weak cell cases. Messrs. The Chloride…

Scan206 Faulty Exide battery for a 40/50 HP chassis and its electrical test.
View original record To EFC. X 4617E 31.1.30. X.4617E. 40/50 HP. Chassis Exide Batteries. Referring to Roy/JTLO/HP.29.1.30, It will be very interesting to hear the result of the investigation by the manufacturers on this…

Scan207 Forwarding a copy of a letter concerning the battery for chassis 73-JG, belonging to H.C. Cain.
View original record X4617E ROY/MS1/P 17.3.30. EFC. c. to Hm. CHASSIS NO. 73-JG - H.C.CAIN. We attach hereto a copy of a letter which has been received by the Chloride Electrical Co. from the driver of the above-mentioned…

Scan208 Customer testimonial letter to Chloride Electrical Storage Co. Ltd. about the longevity of their battery.
View original record C O P Y. SANDYBED COTTAGE, SCRABOROUGH. 4-3-30. Messrs. Chloride Electrical Storage Co. Ltd. Dear Sirs, I have been advised by several people to write you re one of your Batteries I have on a 40/50-HP…

Scan209 Electrical experimental record chart for testing an EcclesX Battery (159).
View original record X46172. ELECTRICAL EXPERIMENTAL RECORD CHARTS. X. No.: 4617 EcclesX Battery (159) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total…

Scan210 Experimental record sheet for an Exide SX battery, logging mileage and test results.
View original record X4617E. ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617 Exide SX Battery (159) Page 2 Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. |…

Scan211 Electrical experimental record sheet for an Exide SX Battery (159).
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X No 4617 X4617 Exide SX Battery (159) Page 3. Date on. Location. Date off. REMARKS. Miles reading Start. Miles reading Finish. Miles covered. Total Miles.…

Scan212 The failure of a cell in an Exide 6RRS-1-3 battery after extensive road and bench testing.
View original record E.76. J.D.90. X4617E. 14-8-30 X4617E. Tests on Exide 6RRS-1-3 Battery (174) No 2 cell has failed in this battery after having covered 9262 miles & been on our bench life test 55 months. On being…

Scan213 Battery cell capacity and high rate discharge tests.
View original record 2 J.090. & realised an ampere hour capacity of 32.9 all cells showing positive weakness. On High Rate Discharge Initial amperes = 101.2 Time to 100 " = 2.1 min " " 90 " = 7.7 " " " 80 " = 10.1 " All…

Scan214 Electrical experimental record sheet for an Exide 6RRS-1-3 battery test.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617E Exide 6RRS-1-3 Battery (174) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total…

Scan215 Electrical experimental record sheet detailing the testing of an Exide 6RRS-1.3 battery.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X no 4617E Page 2. Exide 6RRS-1.3 Battery (174) Date on. Location. Date off. REMARKS. Miles reading start. Miles reading finish. Miles covered. Total miles.…

Scan216 Letter from accumulator manufacturers Peto & Radford concerning a car regulator and battery performance.
View original record X4454 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P& R Accumulators Established 1889 PETO & RADFORD…

Scan217 Article describing a dashboard-mounted ampere-hour meter designed to measure a vehicle's battery charge.
View original record The Motor 1000 December 13, 1927. Measuring the Contents of the Battery. A Much-needed Dashboard-fitting Device Designed for this Purpose. ALTHOUGH the electrical equipment of cars has reached a very…

Scan218 Article from 'The Motor' magazine about motoring illusions and travel to Northern Ireland for road races.
View original record December 13, 1927. 999 The Motor QUEER MOTORING ILLUSIONS.—Contd. different to drive, owing to the fitting of another type of carburetter. For example, one instrument may give the engine a smooth flow…

Scan219 Battery capacity meter advertisement from The Autocar and suggesting a patent search.
View original record S/W. EFC. X4454 CWB7/GM/16.4.28. BATTERY CAPACITY METER. Further to our conversation of Friday last, the enclosed advertisement from The Autocar of April 13th, shows exactly the instrument I was…

Scan220 Advertisement page from 'The AUTOCAR' for Vokes battery capacity indicators and air filters.
View original record THE AUTOCAR ADVERTISEMENTS.—SUPPLEMENT APRIL 13TH, 1928. i. Telegrams: Vokesacess, Put, London. Phone: Putney 5851-2. Left advertisement box (partially torn): Accumulator, ... similar to illustration,…

Scan221 Submission of an accumulator capacity meter from Messrs. J.H.Wedge & Co.
View original record X4457 EFC. from ROY. ROY7/MG1.5.28 Herewith an accumulator capacity meter submitted by Messrs. J.H.Wedge & Co, Willenhall, together with their letter in connection therewith. Kindly advise if…

Scan222 Cutting from 'Electrical Review' detailing a battery condition indicator for motor vehicles.
View original record X 4457 Cutting from "Electrical Review" A BATTERY CONDITION INDICATOR. A device which is intended to show the charge condition of accumulators used for lighting and starting purposes on motor vehicles…

Scan223 Test results for an Accumulator Capacity Indicator meter submitted by Messrs J.H. Wedge & Co.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 X4457 ROLLS-ROYCE LTD. INSTRUCTIONS. To C.F.C. Order No. JC105 Customer's No. Accumulator Capacity Indicator Following are the tests made on a Accumulator…

Scan224 Return of an accumulator capacity meter from Messrs. J.H. Wedge & Co.
View original record X4457 To Roy. from EFC. EFC8/T7.5.28. Herewith we return to you accumulator capacity meter from Messrs. J.H. Wedge & Co. We are not interested in this beyond having noted the voltages which cause the…

Scan225 Rejecting a battery indicator from J.H. Wedge & Co. in favour of an alternative green lamp system.
View original record To Roy. from EFC. X4457 EFC3/T24.5.28. BATTERY INDICATOR FROM J.H. WEDGE & CO. We have duly read their letter of May 11.th which we now return. This instrument is only a moving coil voltmeter with a…

Scan226 Circuit diagram for connecting compensated ampere-hour meters from The Central Mfg Co., Walsall.
View original record The Central Mfg Co., Walsall CONNECTIONS FOR AMPERE-HOUR METERS (COMPENSATED FOR VARIATION OF CHARGE RATE) CS CO D +D C BATTERY CAPACITY MEDIUM RATE 0 10 20 30 40 50 60 70 AMPERE-HOURS VAR'N RATE IN…

Scan227 Explaining the function and testing of Battery Capacity Ampere Hour Meters and Accumulator Capacity Indicators.
View original record X.4457 BATTERY CAPACITY AMPERE HOUR METERS & ACCUMULATOR CAPACITY INDICATORS. These Instruments can be supplied to suit any number of cells and in various patterns, and are a specially designed…

Scan228 Continuation sheet discussing battery conditions, charging, and potential issues in new cars.
View original record Continuation No.1. When a Battery has been overcharged and is in a very poor condition or the plates are not covered by the correct Acid density specified by the Makers the pointer would not remain…

Scan229 Continuation sheet discussing battery performance, charging, deterioration, and fault diagnosis using Ampere Hour Meters.
View original record Continuation No.2. charging at the normal rate it is charging at an increased rate when the Battery is fully loaded and this is where we assume the risk of overcharging occurs. From our prolonged…

Scan230 Continuation of a note regarding instruments for battery charging, referencing an enclosed blueprint.
View original record Continuation No.3. rate the Pointer would reach the Red line on Blue portion of scale before the Battery is actually fully charged. We can supply both these Instruments compensated for variation of…

Scan231 The function and testing of Battery Capacity Ampere Hour Meters and Accumulator Capacity Indicators.
View original record X4457. Battery Capacity Ampere Hour Meters and Accumulator Capacity Indicators. Prov. Patent No. 8972 & No. 33061. These Instruments are specially designed on the Volt-meter principle, which enables…

Scan232 Guide on battery maintenance, fault finding, and the use of associated monitoring instruments.
View original record of the same specific gravity as stated on the Battery. On an old Battery it is possible to obtain the correct charged specific gravity of acid, but it would not contain the full stated capacity. When…

Scan233 Request to test a sample of a Battery Capacity Indicator from Messrs. C.G. Vokes & Co.
View original record X4457 EFC. ROY/GEA2/EB18-6-28. We enclose herewith copy of letter received from Messrs.C.G.Vokes & Co. regarding the Battery Capacity Indicator, sample of which is sent you herewith. Will you kindly…

Scan234 Copy of a letter from Messrs. C.G. Vokes & Co. regarding a new Battery Capacity Indicator instrument they are offering for testing.
View original record Copy of letter received from:- Messrs.C.G.Vokes & Co., 95 & 97, Lower Richmond Road, Putney, LONDON, S.W.15. Messrs.Rolls-Royce Limited., DERBY. June 11th 1928. Dear Sirs, We have recently placed upon…

Scan235 Test report on two battery capacity and ampere-hour meters from C.G. Vokes & Co.
View original record RR 238 (150 BKS.) (D9 431-8 12 24) MP 306975 X4457 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.W.H. Order No.: J.E. 113. Customer's No.: X664 Battery Capacity, Ampere hour Meter from Messrs C.G. Vokes & Co…

Scan236 Instructions sheet with handwritten notes on battery instrument readings and consumption.
View original record RR 239 (150 BKS.) (DD 461-8.12.24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II 19 To Order No. JC113 Customer's No. It would gradually lose ground. When the battery had just started it's discharge,…

Scan237 The testing of two battery capacity ampere-hour meters from C.G. Vokes & Co.
View original record To B.Y. from EFC. c. Roy. X4457 EFCL/T12.7.28. BATTERY CAPACITY AMPERE-HOUR METERS FROM C.G. Vokes & Co. We have had two of these instruments for test, one with a nickle finish and one with a black…

Scan238 Usefulness of a battery charge indicator instrument compared to a green lamp system.
View original record -2- It does, however, appear that by arranging the sensitiveness of the instrument to be not quite so great, it can be made to be quite a useful indicator when actually applied to an electrical…

Scan239 Patronage and safety concerns of a third-party battery indicator.
View original record X4457 To Roy. from EFC. c. EY. EFC3/T23.7.28. BATTERY INDICATOR. With reference to the letter from Messrs. J.H. Wedge & Co. of the 21st inst. (which we return herewith) I do not think we can give our…

Scan240 Query from motor agents regarding a customer's request to fit a Battery Capacity Ampere Hour Meter and its potential impact on the car's guarantee.
View original record N.B.—CUSTOMERS' CARS ARE ONLY DRIVEN BY OUR STAFF AT CUSTOMERS' OWN RISK AND RESPONSIBILITY. X4457. 3756 McNeill, Nicholson & Co. Motor Agents and Engineers, QUEEN STREET, Broughty Ferry, TELEPHONE…

Scan241 Letter to Messrs. McNeill & Co. discussing the limitations and usefulness of battery capacity meters.
View original record X. 4457. c. Mailing. EFCl/AD. Messrs. McNeill & Co., Queen St., Broughty Ferry. 9th July, 1929. Dear Sirs, Yours of July 6th re Battery Capacity Meter. We know of these instruments, and have…

Scan242 Letter to Messrs. McNeill & Co. regarding the fitting of a low-amperage instrument.
View original record Messrs. McNeill & Co. Queen St., Broughty Ferry. 9th July, 1929. -2- We have no objection to the fitting of such an instrument, if of high grade consuming only 6 milliamperes, though we would…

Scan243 From EFC to Roy declining to experimentally consider meters from Messrs. J.H. Wedge & Co.
View original record X 4457. Roy. from EFC. EFC3/AD27.7.29. With reference to attached letter from Messrs. J.H. Wedge & Co. dated the 25th inst, we are not sufficiently interested in these meters to consider the matter…

Scan244 48 coil medium output P.2 dynamo and battery capacity meters.
View original record X 4457. To E. from EFC. EFC6/AD20.1.31. X.6004. 48 COIL MEDIUM OUTPUT P.2. DYNAMO X.4457. Answering your E2/M16.1.31, we have so far no information as to how Sg's car is progressing with regard to…

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