Rolls-Royce Archives

Rolls-Royce Experimental Archives: Box ExFiles\Box 54\1\        Box Selection

IdentifierEntry
Scan001 Quoting Peto & Radford Company regarding a delay with the new type 40/50 battery.
View original record X 4617 To BY. from EFC. EFC1/T16.1.24. X. 4617 - NEW TYPE 40/50 BATTERY. With reference to the above, please note the following par. which is an extract from a letter received from Mr. Minchin of the…

Scan002 Revised specification and extra costs for 12-volt starting batteries for the 20 HP chassis.
View original record EFC. from Wd. X.4617. Wd1/NJ.30.1.24. c. Ey. c. Roy. c. Ms. X.4617. REVISED SPECIFICATION OF 12 VOLT LIGHTING X.4414P. & STARTING BATTERY FOR 20 HP. chassis. Further to mine Wd3/NJ10.1.24 we are now…

Scan003 Arranging a meeting with Peto & Radford to discuss outstanding details on the 40/50 HP battery.
View original record X. 4617 By from Wd. c.to EFC. FR. Wd1/NJ21.2.24. 40/50 H.P. Chassis - Batteries. We are in receipt of a letter from Peto & Radford, dated 20th inst. stating that Mr. Minchin will be in the Midlands…

Scan004 Letter from Peto & Radford discussing battery capacity and weight specifications for 20 HP and 40/50 chassis.
View original record X. 4617. Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 4 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889. PETO &…

Scan005 Quoting a letter from Peto & Radford regarding the non-standard battery terminals on the 40/50 HP Chassis.
View original record By, from Wd, c.to EFC. X.4617.P. Wd1/NJ20.2.24. X.4617. 40/50 HP.Chassis - Batteries. I confirm mine Wd2/NJ13.2.24. This morning we are in receipt of a letter from Peto & Radford, dated 19th inst. as…

Scan006 Visit from Mr. Minchin and the supply of batteries and terminals for the 40/50 HP Chassis.
View original record By. from Wd. c. to EFC. X.4617P Wd2/NJ22.2.24. X 4617. 40/50 H.P.Chassis - Batteries. I have written Peto & Radford that it will be convenient to receive a visit from Mr. Minchin at 1.45 p.m. on…

Scan007 Letter quoting Peto & Radford regarding the new 40/50 HP chassis batteries and their delivery schedule.
View original record X.4617.P By. from Wd. c. to EFC. c. to Ms. Wd3/NJ29.2.24. X.4617 40/50 H.P.Chassis - Batteries. I confirm mine Wd2/NJ22.2.24. We are this morning in receipt of a letter from Peto & Radford, dated 28th…

Scan008 Battery dimensions and label placement for a 40/50 HP Chassis.
View original record By from Wd. c.to EFC. X. 4617. P Wd2/NJ14.3.24. X. 4617. P. & R. Batteries - 40/50 HP. Chassis. Upon receipt of yours By/CT/P11.3.24, we wrote Peto & Radford acknowledging receipt of their letter of…

Scan009 Arranging visits from battery suppliers, The Chloride Electrical Storage Co. Ltd. and Peto & Radford.
View original record By.from Wd. c.to EFC. c.to EF. c.to Hm. c.to Roy. c.to Ms. X4617P F.R. Wd1/NJ27.3.24. Batteries. The Chloride Electrical Storage Co.Ltd. Please refer to my note Wd3/NJ18.3.24. As I shall not be here…

Scan010 Letter from Peto & Radford confirming modifications to grids and proceeding with their manufacture.
View original record X 4617.P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 4 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan011 Letter to Messrs. Peto & Radford approving two sample R.R. grids.
View original record X4617P EFC3/T. 12th April. 1924. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, For the attention of Mr. Minchin. Many thanks for the two sample R.R. + and R.R. - grids…

Scan012 Form for recording the routine treatment of car lighting and starting batteries.
View original record X 4617P. ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 8-7-24 Battery under treatment:- P4RRR11/1 Rated Capacity:- 80 ampere hours. Received charged or uncharged:- Charged X.4617P…

Scan013 Battery test log sheet detailing charge, density, weight, and temperature measurements.
View original record -2- Contd. (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) 1290 (4)…

Scan014 Log sheet recording results from a series of battery charging and performance tests.
View original record -3- (13) Third charge equivalent to average current of 6.0 amperes for 20 hours. i.e. ampere-hours = 120.0 (14) Cell densities. (1) 1290 (4) 1290 (2) 1290 (5) 1290 (3) 1290 (6) 1290 (15) Initial…

Scan015 Letter from Peto & Radford detailing the comparative test results of an Accu-Slem cell against an R.R.11 cell.
View original record X46171P COPY OF LETTER FROM PETO & RADFORD, 50, GROSVENOR GARDENS, LONDON. S.W.1. M/S. 2nd. April, 1925. Messrs. Rolls-Royce Ltd., DERBY. For the attention of Mr. Fowler Clark. Dear Sirs, X46171P…

Scan016 Report from Peto & Radford comparing the condition of R.R.11 and Accu-Slem battery components.
View original record -2- Contd. The negatives were in fair condition but showed signs of shrinkage and consolidation. Sediment about 3/8" deep. The R.R.11 positives were in excellent condition with no signs of wear. The…

Scan017 Correspondence concerning the sealing of Peto & Radford batteries to prevent acid spillage.
View original record V4617P EFC.from Wd. c.to By. Wd6/NJ6.4.25. 4617 X.4414 P. Peto & Radford Batteries. Referring to EFC6/T31.3.25, I send you herewith all the correspondence, including a letter from Peto & Radford ref.-…

Scan018 Letter confirming the requirement for Peto & Radford 40/50 batteries to be completely sealed over the top of the cells.
View original record To Wd. from EFC. c. By. X.4617P. - PETO & RADFORD BATTERIES. 40/50. Answering your Wd6/NJ6.4.25 we confirm that it is our intention that the batteries must be sealed all over the top of the cells to…

Scan019 Ordering specific battery cells to create a composite or 'sandwich' battery for a comparison experiment.
View original record X4617P To Wd. from EFC. EFC7/T23.4.25. RE BATTERIES. X46178 (crossed out) X4617P Referring to your Wd12/NJ21.4.25, would you kindly advise the Chloride Co. that contrary to what we think we previously…

Scan020 Procurement and specifications for an experimental Exide battery.
View original record X4617P To Wd. from EFC. 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…

Scan021 Diagrams showing different configurations for 40/50 Sandwich Batteries.
View original record X. 4617P. 17.6.25. 40/50 SANDWICH BATTERIES. No. Label. BATTERY. Case. 154. S1. P 155. S2. E 156. S3. P 157. S4. E

Scan022 Requesting confirmation on a special 6RR5 Exide battery to avoid unnecessary experimental work, and also mentions two Peto & Radford cells received in error.
View original record To Wd/AW. from EFC. X4617P EFCL/T27.6.25. RE BATTERIES. X4617B X4617P With reference to the two Peto & Radford cells recently received in error, will you kindly have these forwarded for use in this…

Scan023 The failure analysis of a P & R RR.11/1 battery after 28,476 miles.
View original record X4617P EFC. COPY 8.7.25. JB.117. X.4617. RE FAILURE OF P & R RR.11/1 BATTERY+ This battery has two cells failed after having completed 28,476 miles on the load. Upon these cells being opened up the…

Scan024 Standardising and updating the battery capacity figures in the instruction book for the new 40/50 chassis.
View original record Y467P To BY/NHW. from EPC. EFC3/T19.8.25. RE INSTRUCTION BOOK. X8782 In the Instruction Book matter for the new 40/50, [strikethrough]battery[/strikethrough] we refer to the capacity of the battery as…

Scan025 Letter to Messrs. Peto & Radford concerning the failure of a new 40/50 type P & R RR.11 battery.
View original record X46171P 10th Sept. 1925. EFC3/T. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. Dear Sirs, We have now had a failure of the first of the new…

Scan026 Electrical experimental record sheet for a P&R BR11/1 Battery (147).
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. P&R BR11/1 Battery (147) X4617P Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles.…

Scan027 Letter from a battery supplier regarding issues with swollen plates in their product.
View original record X. 4617 P. Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 4-LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan028 Letter from Peto & Radford regarding the performance and life test of an R.R.11 battery.
View original record X4617 P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 4-LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889 PETO &…

Scan029 Letter to Messrs. Peto & Radford concerning testing and maintenance procedures for an RR.11 battery.
View original record X46171P EFC2/T. 21st September, 1925. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. Dear Sirs, We thank you for your letters of the 15 th and…

Scan030 Letter concerning the dispatch of two cells and information about P & R chassis batteries.
View original record -2- Contd. we say in the Instruction Book for the P & R. chassis batteries. The two cells will be despatched to you in due course. Yours faithfully, FOR ROLLS-ROYCE LIMITED.

Scan031 The return of two Peto & Radford battery cells for inspection.
View original record X4617P To D/BP. from EFC. c. Despatch Stores. c. Wd. EFC2/T26.9.25. X.4617P - PETO & RADFORD BATTERY. 40/50. We are sending into the Stores two P & R RR.11 battery cells which are to be returned to…

Scan032 Letter to Messrs. Peto & Radford concerning the performance and examination of a P & R. RR.11 battery.
View original record X4617P EFC3/T. 30th Sept., 1925. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. Dear Sirs, Re P & R. RR.11 Battery. Reference yours of the 18th…

Scan033 Instruction sheet detailing a special test on two P&R RRII battery cells.
View original record R.R. 100 (20 Bks.) (SK 354 5-12-22 MP 264049) X4617P 108693 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.F.L. Date: 30-9-1925 Order No.: Customer's No.: X4617.P. Re: J.B.124 Re Special Test of P&R RRII…

Scan034 Instruction note regarding a satisfactory method for treating batteries intended for dry storage.
View original record RR 300 (30 Bks.) (SK 354 5-12-22 MP 264049 108694 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II To_____________________19____ Order No._____________ Customer's No.___________ Re IB124 had positives of a dark…

Scan035 Letter from Peto & Radford concerning the performance and mileage of a returned 'RR.11' battery.
View original record X4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889. PETO &…

Scan036 Letter discussing battery mileage equivalency and requesting a further supply of oil for FA.11 cells.
View original record X4617P EFC2/T. 2nd October, 1925. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. Dear Sirs, We have your letter of the 1st inst. Your figures are…

Scan037 Acknowledgement of receipt for improved porcelain containers and elements for H.T. batteries.
View original record -2- Contd. Pleased to acknowledge receipt of the porcelain containers and new elements for the H.T. batteries, and we note that the porcelains are now properly glazed on their under-surfaces. Yours…

Scan038 Letter from Peto & Radford concerning battery discharging and draining instructions.
View original record X467P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889. PETO &…

Scan039 Letter from an accumulator manufacturer concerning battery life and supplying oil for cells.
View original record X4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889. PETO &…

Scan040 Letter to Mr. G.R.N. Minchin discussing ignition performance, dynamo output limits, and battery configurations.
View original record X.46171? EFCL/T. 21st November, 1925. Mr. G.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. X8780 X46178 Dear Mr. Minchin, Answering your three letters of the 9th, 10th and 16th inst.. Thank you…

Scan041 Comparison of the charging internal resistance and voltage between P & R and Exide batteries.
View original record -2- Contd. say the statement would hold with a complete P & R battery. at the same time I have never yet seen or been shown in the Test Dept. an output in excess of 13.5 amperes in these…

Scan042 Battery internal resistance, charging characteristics, and their impact on dynamo performance.
View original record -3- Contd. Now on the high rate discharge our limit of battery internal resistance is .015 ohm, and that is the effective internal resistance of the battery when it is putting out 104 amperes through…

Scan043 Performance of car batteries, comparing different types and proposing changes to charging specifications.
View original record Contd. -4- It may be a good thing to get a big proportion of acid volume to plate volume in some ways, as I believe you have, at any rate greater than the Exide, but if this big volume of acid is not…

Scan044 Letter discussing criticisms and performance issues of H.T. batteries.
View original record -5- Contd. Regarding the H.T. batteries, the criticisms which I have heard about these have been adverse in every case. The Secretary of our Radio Club, Mr. H. Tawn, who manages the Clive Electrical…

Scan045 Letter from an accumulator manufacturer discussing ignition, dynamo output, and battery over-charging issues on Phantom cars.
View original record X. 4617P. 2 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators Established 1889 PETO &…

Scan046 Letter from Peto & Radford discussing car battery performance, charging rates, and over-charging issues.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 23rd November 1925. The points that you mention are extremely interesting and I am putting your letter up to our technical people and we will…

Scan047 Continuation page of a letter to E. Fowler Clark Esq., regarding grooves on separators.
View original record PETO & RADFORD. CONTINUATION 3. E. Fowler Clark Esq., 23rd November 1925. same place as we do, and are the grooves on their separators on the same side as ours? If there is anything in your point the…

Scan048 Letter to Mr. G.R.N. Minchin discussing battery charging rates, peak outputs and enclosed performance curves.
View original record EFC2/T. X4617P 24th November, 1925. Mr. G.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. X4617P XE780 Dear Mr. Minchin, Yours of yesterday's date. I think it is rather an exaggeration for you to…

Scan049 Dynamo output curves and premature battery failures, particularly Exide batteries, due to over-charging.
View original record -2- Contd. to you, and I am quite prepared to reduce the outputs of the dynamos on the chassis, so long as I do not reduce them below these curves. But I cannot do this, owing to the known variations…

Scan050 Battery failures and charging system characteristics on the New Phantom model.
View original record - 3 - Contd. come off New Phantoms, and it is only in the case of the New Phantom that the new charging characteristics are there. Though I will not go so far as to say that trouble will not exist in…

Scan051 Continued letter discussing dynamo output under experimental conditions and arranging for a machine exchange for testing purposes.
View original record -4- Contd. instead of 11. If we did that I am afraid we should have a big outcry against poor output. It is in the nature of things very difficult to get experimental experience of what we look upon…

Scan052 Letter discussing dynamo testing, battery charging capabilities, and separator arrangements in Exide and P&R batteries.
View original record -5- Contd. replace the other machine on our experimental study of dynamos. You could then run throughout the winter with this machine, and I should ask you to imitate as far as possible the extreme…

Scan053 Continued report on the performance and construction of different battery cells.
View original record -6- Contd. contact both with the ebonite separator and with the negative plate. The 20 HP. Exide is similar. The 20 HP. P & R is also similar, but the 40/50 P & R is ribbed only on one side, namely…

Scan054 Letter from accumulator manufacturer Peto & Radford clarifying issues regarding battery overcharging and premature failures.
View original record 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…

Scan055 Letter discussing the performance and over-charging issues of car batteries and dynamos.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 27th November 1925. batteries except the one that you returned, and no batteries have come back off any Phantom cars. The one you returned did…

Scan056 Letter discussing battery separators, internal resistance, dynamo charging peaks, and output curves for 20 HP and 40/50 models.
View original record PETO & RADFORD. CONTINUATION 3. E. Fowler Clark Esq., 27th November 1925. With regard to the position of the separators, we are making some tests at the Works to see if our voltage is so much higher…

Scan057 Letter from Peto & Radford discussing battery charging currents and the potential for over or undercharging.
View original record PETO & RADFORD. CONTINUATION 4. E. Fowler Clark Esq., 27th November 1925. is 80 ampere hours; normal charging current 8 amperes. It is a 50% bigger battery yet the charging current is almost the same,…

Scan058 Letter from Peto & Radford regarding a controversy over batteries and electrical equipment discussed in 'Autocar' magazine.
View original record X4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889 PETO &…

Scan059 Typed letter to the editor of 'The Autocar' regarding battery overcharging in British cars and the benefits of dynamos with a falling output.
View original record Copy for. C. Fowler Clark Esq. [Faint inverted text from reverse:] The Editor, 'THE AUTOCAR' 30th November 1925. The line of Rolls Royce (always ahead of others) is a guiding star in this matter and…

Scan060 Typed letter to the editor of 'The Autocar' magazine praising the firm's leading design.
View original record [Handwritten annotation top right] J.G.S. 2/12/25 2. [Typed letter] The Editor, "The Autocar". 30th November 1925. To many, the firm of Rolls Royce (always ahead of others) is a guiding star in…

Scan061 Letter discussing the internal appearance and longevity of car batteries based on different care and charging conditions.
View original record X4677P EFC3/T. 2nd December, 1925. Mr. G.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, Apart from faulty separation of the elements of the battery, what is the difference in…

Scan062 Continued discussion on vehicle battery life, overcharging, and dynamo performance on the New Phantom.
View original record -2- Contd. I have at home a six-volt Exide battery which is six years old, and has always been properly treated, and which is still quite good, but I have not the slightest doubt that if I pulled the…

Scan063 Report comparing the performance of Exide and P&R batteries with a dynamo, detailing voltage, amperage, and temperature results.
View original record -3- Contd. which we used various batteries in succession. The temperature rises, the dynamo terminal voltages, and minimum outputs, were observed, and we have made a copy of the table of results which…

Scan064 The charging systems and batteries for the 20 HP and 40/50 HP models, including undercharging complaints.
View original record -4- Contd. Re the 20 HP. system, comparing the relative capacities with the relative charging rates, we agree that relatively the 20 HP. battery is not so large, but whereas we have been allowed to…

Scan065 Letter discussing a communication with Autocar and a postscript on battery performance and materials.
View original record -5- Contd. Many thanks for the enclosed copy of the letter you sent to the Autocar. I quite appreciate that it would be most unreasonable to use this in the course of our present argument. I had seen…

Scan066 Report compiling feedback from different individuals on dynamo and battery charging issues for 20 HP and Phantom models.
View original record -6- Contd. P.S.2. Referring back to my second paragraph on p.4, further information is now to hand. Our Mr. Chandler had sent out a circular enquiry to some of our men and answers from four of them…

Scan067 Battery charging difficulties for different car models based on typical usage patterns.
View original record -7- Contd. "Battery troubles are undoubtedly common after "a few years use. Except in cases where trouble is "experienced in a comparatively new car, I think the "majority of owners and drivers accept…

Scan068 Continued discussion on battery life, repairs, renewals, and potential overcharging.
View original record -8- Contd. I think it is gradually being appreciated by owners and drivers that the life of a battery is a very brief one, and my impression in consequence is that owners turn more readily to the…

Scan069 The order of a P & R RR.11 (40/50) battery for the Electrical Experimental Department.
View original record X4677P To Wd. from EFC. EFC5/T2.12.25. RE 40/50 BATTERIES. Will you kindly order up for use in the Elec. Expl. Dept. 1 P & R RR.11 battery (40/50), to be delivered in a fully charged condition. EFC.

Scan070 Test data table showing battery cell voltages and dynamo performance metrics.
View original record 3.12.25. BATTERY. | NO. | Cell Volts | | | | | | | Dynamo | | | Battery. Volts. | |---|---|---|---|---|---|---|---|---|---|---|---| | | – | 1 | 2 | 3 | 4 | 5 | 6 | + | Temp. °C. | Volts. | Amps. | | |…

Scan071 Letter from an accumulator manufacturer discussing battery wear, sludge formation, and longevity.
View original record Y4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan072 Letter from Peto & Radford discussing battery performance, output curves, and proposed modifications for Phantom cars.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 8th December 1925. as it is left alone it may go a very long time. With regard to the output curve, 13.6 amperes peak is a good deal more than 11…

Scan073 Letter to Mr. Minchin discussing battery overcharging, sludge, and the condition of plates.
View original record 84617P EFC5/T. 9th December, 1925. Mr. G. R. N. Minchin, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, Thank you for yours of yesterday's date just received. I am sorry, but your comments on…

Scan074 Lead-acid battery plate chemistry, construction, and maintenance.
View original record -2- Contd. amount of active material to keep up the capacity, and I do think there may be something to be gained by experimenting on means by which the positive active material can definitely be kept…

Scan075 Letter discussing electrical output adjustments on New Phantom chassis and battery maintenance.
View original record -3- Contd. I have now got the information of which I spoke from our Test Dept. and it does appear that the outputs on New Phantom chassis are fairly consistently higher than our specified curve. The…

Scan076 Letter from a battery supplier discussing overcharging issues and arranging a visit.
View original record X4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. (9 LINES. PRIVATE BRANCH EXCHANGE). TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan077 The continuation of a letter from Peto & Radford to E. Fowler Clark Esq.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 11th December 1925. have had something to eat either on the way up or when we arrive. Yours sincerely, G.R.N. Minchin

Scan078 Test results of terminal potential differences on a standard D&R battery during charging at various amperages.
View original record R.R. 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X4617P 108714 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: E.T.L. Date: 11-1-1926 Order No.: Customer's No.: Re: J.B.141. Re terminal P.D's. on Std. D&R…

Scan079 Instruction sheet detailing the results of bench tests on a P&R RR11-2 battery.
View original record ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: C.F.C. Order No.: Re: J.B.137. Customer's No.: Re Tests of P&R RR11-2 Battery. This battery was received charged & was subjected to bench tests with the…

Scan080 Letter inquiring about the differences and proposed alterations to P & R batteries, focusing on charging resistance.
View original record x4617 P EFCS/T. 12th January, 1926. Mr. K. Preston, Messrs. Peto & Radford, Dagenham Dock, Romford, Essex. Dear Mr. Preston, Re Standard P & R Batteries for RR. Cars. We gathered from Mr Minchin…

Scan081 Continuation of a letter regarding sandwiching experiments with different types of batteries.
View original record -2- Contd. for our sandwiching experiments these are of the latest type, whereas some sandwich batteries we made up as long ago as 11.12.25would contain cells of the earlier type. Yours sincerely,…

Scan082 Letter from a battery manufacturer regarding standard batteries for cars.
View original record X46717 DIRECTORS SIR ARCHIBALD. C. 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…

Scan083 Letter from Pritchett & Gold and E.P.S. Co. Ltd. concerning details of the 40/50 battery and characteristics of Exide and P. & R. batteries.
View original record -3- E. Fowler Clark Esq. Messrs. Rolls-Royce Ltd. 19th January, 1926. In the course of a week or so I hope to write you regarding certain details of the 40/50 battery and the characteristics of the…

Scan084 Testing the terminal potential difference and electromotive force of a P & R 6FR11 battery cell.
View original record X4617P EFC. 30.1.26. JC.4. RE TERMINAL P.D's OF CELLS. X664 A std. P & R 6FR11. battery was fully charged and when gassing the current was increased to 12 amperes for a short while until each cell…

Scan085 Letter from Peto & Radford discussing modifications to battery plates and experiments with ebonite and wood separators.
View original record X4617P COPY OF LETTER FROM:- PETO & RADFORD, DAGENHAM DOCK, ROMFORD, ESSEX. KP/4. 2nd. February, 1926. E. Fowler Clark Esq., Messrs. Rolls-Royce Ltd., DERBY. LL655 Dear Mr. Fowler Clark, X.4617P.…

Scan086 Letter discussing the performance of different ebonite and wood separators to improve high discharge performance.
View original record -2- Contd. It should be remembered that the inferior performance with .8 mm. ebonite would be accentuated at electrolyte temperatures below the normal and I would suggest for your consideration that a…

Scan087 Test results for terminal potential differences of standard P&R batteries during charging at different currents.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.F.b. Order No.: J.C.6. Customer's No.: Re terminal P.D.s. of Std. P&R Batteries. The terminal P.D.s. were taken on…

Scan088 Letter to Mr. K. Preston of Peto & Radford regarding battery specifications and charging procedures.
View original record X4617P EFC2/T. 6th February, 1926. c. to Wd. Mr. K. Preston, Messrs. Peto & Radford, Dagenham Dock, Romford, Essex. Dear Mr. Preston, X4617P X465S I have your letter ref. KP/4 of the 2nd. inst. In…

Scan089 Instructions and results for a P4RRRII-2 battery discharge test.
View original record R.R 236 (150 BKS.) (DB 431-8 12 24) MP J06975 X.4617P. ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.F.B. Date: 10-2-1926 Order No.: J.C.7 Customer's No.: X4617P. Re Test on P4RRRII-2 Battery. This battery…

Scan090 The performance results of a component's second discharge test.
View original record R.R. 238 (150 BKS.) 100 431-8 12 24) MP JC6975 ROLLS-ROYCE LTD. INSTRUCTIONS. T T 19 To Order No. J.C.T. Customer's No. showed positive weakness although this was only slight. On this second discharge…

Scan091 Letter discussing a compromise on the thickness of ebonite separators and their effect on resistance and charging.
View original record x4617P EFC3/T. 22nd February, 1926. Mr. G.R.N.Minchin, 50, Grosvenor Gardens, London, S.W.1. x4655 Dear Mr. Minchin, Thank you for your letter of the 13th inst., informing me that you are back. I hope…

Scan092 Page 2 of a letter discussing a .5mm compromise with Exide and specifications for wood separators.
View original record -2- Contd. Altogether I think you will agree that .5 mm. is the right compromise from many points of view, and particularly as it brings us into line with what the Exide are actually doing, though I…

Scan093 Instructions for a leakage test on a standard P&R RRII cell.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X. 4617.P. ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.J.B. Order No. JC12 Customer's No. Re Leakage Test on a Std P&R RRII cell. A Discharge was taken on a…

Scan094 Instruction sheet noting that the standard cell is not subject to leakage like the Tungstone cell.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II 19 To Order No. JC12. Customer's No. were realised. This proves that our Standard cell is not subject to such leakage as…

Scan095 Letter from an accumulator manufacturer discussing ebonite separator thickness and battery performance.
View original record X.4617P. Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. [LOGO: MOTOR TRADE ASSOCIATION] [LOGO: INCORPORATED 1905] [LOGO: SOCIETY OF MOTOR MANUFACTURERS & TRADERS…

Scan096 Letter from Peto & Radford to E. Fowler Clark Esq. regarding issues with battery plates swelling and breaking.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 1st April 1926. With regard to our plates swelling and breaking when you try to get them out, we thought that this might happen and after we had…

Scan097 Letter from Peto & Radford concerning the performance and testing of their battery cells against Exide batteries.
View original record Y46178 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan098 Letter discussing experimental battery comparisons and specifications for separators and electrolyte levels.
View original record X4617P EFCl/T. 16th April, 1926. Mr. C.R.N. Minchin, 50, Grosvenor Gardens, London, S.W.1. X4655 Dear Mr. Minchin, Thank you for your three letters of yesterday's date. It is quite true, as you say,…

Scan099 Continued letter discussing electrolyte depth, ebonite thickness, and a Phantom vehicle's side lamps.
View original record EFC1/T. -2- Contd. Then again, we must have a sufficient depth of electrolyte for hydrometer readings. These are my comments on that particular question. In regard to the thickness of the ebonite…

Scan100 Request for the return of an experimental sandwich battery from chassis 11-EX for comparative analysis.
View original record W/S. X.4617P. EFC1/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…

Scan101 Letter to Messrs. Peto & Radford discussing experiments on battery charging, potential differences, and cell construction.
View original record X4612P X EFC1/T. 18th June, 1926. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. X3839 For the attention of Mr. G.R.N. Minchin Dear Sirs, We thank you for your letter of the 17th inst.…

Scan102 Letter from accumulator manufacturers Peto & Radford regarding the testing of special cells and batteries.
View original record X4617P Works, Dagenham Dock, Essex. TELEPHONE VICTORIA 3667. 8 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators Established 1889 PETO &…

Scan103 Letter requesting a new 60-volt H.T. battery for testing and referring to an enclosed report on chassis battery tests.
View original record X4617P EFC3/T. 26th June, 1926. Mr. G.R.N.Minchin, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, Yes, I should very much like to have one of the new 60 volt H.T. batteries for test, and I…

Scan104 Letter from a battery manufacturer discussing charging voltages and characteristics.
View original record X4617P Works, Dagenham Dock, Essex. TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan105 Letter discussing the true voltage of 12-volt car systems and the specification of lamps required.
View original record PETO & RADFORD. CONTINUATION 2. E. Fowler Clark Esq., 6th July 1926. this to Mr. Oliver Lucas some time ago and I suggested that makers of apparatus for these so called 12-volt car systems should…

Scan106 Letter discussing the experimental testing of production batteries and their charging characteristics.
View original record X4617P EFCL/T. 7th July, 1936. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N.Minchin. Y8780 Dear Sirs, Thank you for your letter of yesterday's date.…

Scan107 Vehicle electrical systems, including charging currents, lamp voltages, and cutout points.
View original record Contd. -2- EFC1/T. In regard to your opinion that the charging current can be further reduced without any fear of the battery running down, we think this may be quite correct, but as pointed out…

Scan108 Letter discussing adjustments to a dynamo cutout and ignition coil for a 6-volt battery system.
View original record Contd. -3- EFCL/T. because then there could be no spark at break). From the point of view of appearances, however, it looks worse than it really is to adjust a cutout to make like this on a 6-volt…

Scan109 Test report on an S1 Sandwich Battery following a low rate discharge bench test.
View original record R.R. 238 (150 BKS.) (DS 431-8 12 24) MP JC6975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.L.B. Order No.: JC 38 Customer's No.: X4617.S. Re Tests on S1 Sandwich Battery. This battery was taken out of the…

Scan110 Letter discussing the effects of running on five cells, the charging switch, and the utility of a voltmeter.
View original record X4617P EFC2/T. 11th August, 1926. Mr. G.R.N. Minchin, Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Minchin, Y8280 Thank you for your letter observing the effects of running…

Scan111 Letter discussing a report on the dynamo-battery electrical system and preparations for a modified dynamo.
View original record EFC2/T. -2- Contd. I do not think I let you have a copy of a report I made out recently entitled "The Functioning of the Dynamo-Battery Combination of a Chassis Electrical System". This will be of…

Scan112 Electrical department record sheet for a Petox Radford RB11-2 battery test.
View original record X 4617P ELECTRICAL DEPARTMENT. RECORD SHEETS. X. No: 4617P Petox Radford RB11-2 Battery. (175) | Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles…

Scan113 Letter responding to an enquiry about a car's electrical system, discussing voltmeter readings, a special dynamo, and charging P.D.'s.
View original record X4617P EFC2/T. 30th August, 1926. Mr. G.R.N. Minchin, Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. X8780 Dear Mr. Minchin, Thank you for your letter of the 23rd. inst. The reason I…

Scan114 Letter discussing the Remy method of inserting field resistance and comparing it to other methods.
View original record -2- Contd. Referring to the Remy method of inserting the field resistance by rise of temperature, this is an alternative method, and without going into the matter very deeply I should imagine that the…

Scan115 Order for an up-to-date P & R 40/50 battery for the Experimental Department.
View original record X4617P To Wd. from EFC. EFC/T31.8.26. (charged) Will you kindly order up for the Expl. Dept. one right up-to-date standard P & R 40/50 battery, incorporating the latest improvements of which Mr.…

Scan116 Letter reporting on the performance of Exide and P&R batteries during a 10,000-mile test on a new Phantom chassis.
View original record X4617P 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 / E Dear Sirs, On our latest 10,000 mile test chassis - a…

Scan117 Letter discussing issues with battery cells, including acid retention and observations from a 10,000-mile test.
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…

Scan118 Letter concerning an order and improvements for a Peto & Radford battery.
View original record X4607P EFC. 3/9/26 ROY/MS5/P.3.9.26. PETO & RADFORD BATTERY. As requested in yours EFC1/T31826 we sent our official order No. 58848 for the Battery in question, and have this day received an…

Scan119 Letter from Peto & Radford confirming receipt of order No. 58848 for a 40/50-HP car battery.
View original record COPY OF LETTER. ----------- FROM PETO & RADFORD 50 GROSVENOR GARDENS. LONDON. S. W. 1. Ref. C/O 29. 2nd Sept. 1926. ------------------------------------------------- Messrs. Rolls Royce Ltd., Derby.…

Scan120 EFC to ROY requesting the latest type of Peto & Radford battery.
View original record X4617P To ROY. from EFC. EFC2/T7.9.26. PETO & RADFORD BATTERY. With reference to your ROY/MS5/P3.9.26 with attached letter from Messrs. Peto & Radford of 2.9.26, will you kindly note that we require…

Scan121 Letter from accumulator manufacturers Peto & Radford concerning battery electrolyte levels and a comparison with Exide batteries.
View original record X.4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889 PETO &…

Scan122 Letter discussing the construction of battery cells, specifically regarding single and double ribbed separators.
View original record X4607 P EFC2/T. 9th Sept., 1926 Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. C.R.N.Minchin. Dear Sirs, Answering your letter of the 7th inst. we think your…

Scan123 Letter to Messrs. Peto & Radford concerning the inclusion of battery illustrations in instruction books.
View original record X4617P EFC2/T 15th September, 1926. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N. Minchin. X8762 X4617P Dear Sirs, Answering your letter of the 10th…

Scan124 Letter from Peto & Radford concerning battery cells sent for testing.
View original record X4617P Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan125 Query about the dimensions of a supplied 40/50 battery exceeding the specification figures.
View original record To P.R. X4617P SJC2/T 7.10.26 P.S. X8680 Are you aware that the overall height of the standard 40/50 battery which you are now supplying to us exceeds the figure of 10.075" given in our specification,…

Scan126 Extract of a letter to Peto & Radford regarding a dispute over battery height and a new 40/50 battery unit.
View original record X.4617P. Extract from EFCl/T9.10.26. TO MESSRS. PETO & RADFORD. X4664. With regard to the height of the battery, I shall say no more about this and hope that the matter will die out. I have raised the…

Scan127 The non-interchangeable P & R batteries for the 40/50-HP Chassis due to height discrepancies.
View original record X4617P By. EFC. Wd1/EB13-10-26. RECEIVED OCT 14 1926 40/50-HP. Chassis - P & R Batteries. Upon receipt of By/Cghl/H6-10-26, we wrote Messrs Peto & Radford, asking them to explain how it came about…

Scan128 Letter from a supplier about a mistake in the dimensions of battery cells for 40/50-HP models.
View original record Copy of letter received from:- Messrs.Peto & Radford, 50, Grosvenor Gardans, LONDON.S.W.1. M/5. 11th October 1926. Messrs.Rolls-Royce Ltd., DERBY. Dear Sirs, We are in receipt of yours of the 7th…

Scan129 Confirming differences between P & R and Exide batteries and advising on cell replacement for the 40/50 HP Chassis.
View original record To Wd from EFC. c.c. RV. X4617P EFC2/T15.10.26. 40/50 HP. CHASSIS - P & R BATTERIES. Reference your Wd1/EE13.10.26, we confirm that the height of the cell cases of the P & R battery has always been…

Scan130 Letter from accumulator manufacturer Peto & Radford concerning the bulging of a 20 HP battery case.
View original record 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…

Scan131 Continuation of a letter from Peto & Radford regarding components that may swell slightly.
View original record PETO & RADFORD. CONTINUATION 2. Messrs. Rolls Royce Ltd. 20th October 1926. of them are not fitted in any containing case and it does not matter if they do swell a little. Yours faithfully, PETO &…

Scan132 Dimensional differences and assigning fault between P & R and Exide batteries.
View original record S4617P To EY. from EFC. c. Wd. 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…

Scan133 Discrepancy in battery dimensions from supplier P & R for the 40/50 HP chassis.
View original record X4615P EFC. W.J. Hs BY15/H. 27.10.26 / I STAMP: OCT 27 1926 STAMP: RECEIVED P & R.BATTERIES IN 40/50 HP.CHASSIS. Referring to Wdl/EB.13.10.26. and EFC2/T.15.10.26. I think the position at the moment…

Scan134 Record of routine treatment for a car lighting and starting battery.
View original record X4617 P. ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 1-11-26 Battery under treatment :- P&R RRH-3 Rated capacity:- 75 amperes.hours. Received charged or uncharged :- Charged. X.4617…

Scan135 Log sheet detailing a battery's second charge, density readings, weight, and cell densities.
View original record -2- Contd. (6) Second charge :- Amperes. from to hours amp.hrs. Total (7) Emptying and refilling. or adjusting densities and level. OK. (7a) Density readings for battery received charged. (1) 1275 (4)…

Scan136 Log sheet recording data from multiple battery charging cycles.
View original record -3- Date. (13) Third charge equivalent to average current of 6.0 amperes for 18.0 hours. i.e. ampere-hours = 108.0 (Date: 3-11-26 to 4-11-26) (14) Cell densities. (1) 1275 (4) 1275 (2) 1275 (5) 1275…

Scan137 20 HP Lorraine Dietrich and a suggested improvement for Peto & Radford accumulators.
View original record X4617P To BJ. from R. c. Hs. R2/M5.11.26. 20 HP. LORRAINE DIETRICH. Many thanks for your remarks regarding my notes on the Lorraine-Dietrich. I telephoned to Mr. Minchin and he has now sent his copy…

Scan138 Letter from accumulator manufacturer Peto & Radford regarding modifying the electrolyte level in a battery.
View original record 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…

Scan139 Letter to Peto & Radford concerning battery electrolyte depth, blueprint specifications, and a dynamo output curve.
View original record X46171 EFC2/T. 24th November, 1926. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. For the attention of Mr. G.R.N. Minchin. Dear Sirs, We thank you for your letter ref. M/5 of the 18th…

Scan140 Letter from Peto & Radford concerning a meeting with Mr. Royce about a Lucas machine, a new battery indicator concept, and vehicle battery requirements.
View original record X4617P PETO & RADFORD, 50, GROSVENOR GARDENS, LONDON, S.W.1. M/5. E. Fowler Clark, Messrs. Rolls-Royce Ltd., Derby. 29th November, 1926. Dear Fowler Clark, X8791 I saw Mr. Royce and I mentioned the…

Scan141 Instructions and results for testing the recharging potential difference of a P&R RR11 battery.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X. 4617P. ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.P.E. Order No.: JC68 Customer's No.: X4617P Recharging PD of Standard P&R RR11 Battery Standard P&R RR11-3…

Scan142 The charging potential difference of the latest Peto & Radford battery.
View original record To R. from EFC. c. BJ. E. c. Wor. Ds. c. Ry. EP. c. PN. x467P EFCl/T1.2.27. CHARGING P.D. OF LATEST P & R BATTERY. Y664 Ref. of previous report concerning charging P.D's at various rates of current -…

Scan143 Continuation page of a document detailing electrical charge characteristics, with mention of an attached print.
View original record -2- Contd. of charge to this characteristic would be 4 amperes at a terminal P.D. of 16 volts. EFC. 1 print attached.

Scan144 Graph showing sustained potential difference (P.D.) during battery charging at various currents.
View original record VOLTS. SUSTAINED P.D ON A STANDARD P&R R.R11-3 BATTERY CHARGING AT VARIOUS CURRENTS. AMPERES.

Scan145 Instruction sheet detailing the results of a re-test on a battery after a full charge.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X.4617.P. ROLLS-ROYCE LTD. INSTRUCTIONS. To: C.T.B. Order No.: JC93. Customer's No.: X.4617.P. 10-8-27 T9 Re Test on P&R RR11-3 Battery (132) This battery…

Scan146 Internal order request for 6 Central Stay Bolts with Nipples for a Peto & Radford battery box.
View original record X4617P To Roy. from EFC. EFCL/T26.4.28. Will you please order :- 6 Central Stay Bolts with Nipples suitable for the Peto & Radford 40/50 H.P. battery box. EFC. O/N.54700. Recd.

Scan147 Extract from a letter discussing the impressive condition of a battery after two years and over 20,000 miles of use.
View original record X4614 P. Extract from Mr. Minchin's letter of 15.5.28. X.8660. X.4617P. With regard to the battery which did over two years' work and something over 20,000 miles, I saw this opened up yesterday and…

Scan148 Extract detailing modifications to three battery cells for testing against acid leakage.
View original record X.4617P. Extract from M/5 from Messrs. P & R. X.4617S. 26th July, 1928. "Mr. Preston wishes you to know that we are making up three cells as follows :- 1. Standard R.R.11. - wood and ebonite…

Scan149 Letter from accumulator manufacturers Peto & Radford regarding a report on plate performance and overcoming short circuits.
View original record X4617 P Works. Dagenham Dock. Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889. PETO &…

Scan150 Report from Peto & Radford detailing tests on experimental cells and proposed modifications.
View original record PETO & RADFORD. CONTINUATION COPY OF REPORT RECEIVED FROM WORKS Further to our letter of the 25th ult., and the three experimental cells referred to therein, we have completed our tests on the…

Scan151 Letter to Peto & Radford concerning a red stain observed on new wood and ebonite separators in FA.11 cells during charging.
View original record X4617P 24th August, 1928. EFC4/T. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, R.R. Batteries. We thank you for your letter M/A238 of the 23rd. inst. and we are in full…

Scan152 Confirming the return of a battery temporarily fitted to the 10-EX vehicle.
View original record X4617P To Mx. from EFC. EFC2/T25.8.28. We herewith return to you the battery which you temporarily had fitted to 10-EX during the holidays. EFC.

Scan153 Low and high rate discharge tests performed on a battery.
View original record RR 238 (150 BKS.) (DD 431-B 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: G.S.h. Date: 2-11-1925 Order No. JC 140 Customer's No. X 4617P Re Tests on PcRRR11-3 Battery (182) This battery is now 2…

Scan154 Instructions regarding a faulty battery on a footboard and required repairs.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X4617 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.7.E. 28-11-1928 Order No. IC146. Customer's No. X4617. Re SEX Battery on Footboard. You will remember the battery…

Scan155 Graphical chart recording of an electrical test, possibly a battery discharge test, with calculated results.
View original record 21-12-25 175 P&R RRII-2 103 lbs 75 a.h. Average amperes = 6.49 Hours = 8.75 Ampere hours = 56.8 1552 1.80w REGd TRADE MARK 'MEGGER'

Scan156 Chart recording of an electrical discharge test with calculated results.
View original record 8-2-26 175 P&R RR11-2 75 a.h. 103 lbs. Average amperes = 6.47 Hours = 10.1 Ampere hours = 65.4 634 1.80v Discharged against any charge Standing amperes = 6.0 Hours = 0.6 Ampere hours = 3.6 REGD. TRADE…

Scan157 Chart recording of an electrical test, showing amperage over time.
View original record 47 11-7-24 147 P&R RRII/1 103 lbs 80 a.h. P Average amperes = 6.6 Hours = 8.0 Ampere hours = 52.8 .513 1.80w BRITISH MADE - MEGGER EVERSHED & VIGNOLES LTD. CHISWICK. LONDON W.

Scan158 Chart recording of an electrical test showing amperage over time, possibly for a battery.
View original record 49 17-7-24 147 P&R RRII/1 103 lbs. 80 a.h. Average amperes = 6.63 Hours = 8.0 Ampere hours = 53.0 -5/2 1.80w MARK MEGGER

Scan159 Requesting correction for an improperly supported footboard on car 8-EX causing battery deterioration.
View original record RHC. from EFC. copy Hs/AJL. x4617 p EFC2/T30.11.28. RE 8-EX. The footboard on 8-EX which carries the battery appears not to be properly supported and firm. Batteries carried on this car suffer…

Scan160 Electrical experimental record sheet for a P&R 2-6 RR 11-4 battery.
View original record X4617P. ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617P P&R 2-6 RR 11-4 Battey (191) on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total…

Scan161 Test results for a 3-year-old P&R RR11-3 battery detailing its low and high-rate discharge performance.
View original record E.J.C. J.D.30. X4617 P. 30-9-29. X4617P. Re Tests on P&R RR11-3 Battery (1&2) This battery is now 3 years old & has been on our bench life test 34 months & has also ran 3,977 miles on the road. On Low…

Scan162 Letter from Pritchett & Gold discussing the results of intensive life tests on various batteries.
View original record X4617P. DIRECTORS. SIR ARCHIBALD G. GOLD. WILLIAM PETO. F.C. GRAHAM MENZIES. C.R.D. PRITCHETT. G.R.N. MINCHIN. T.W. PRITCHETT. Telephone No RAINHAM 34. Telegrams "PRITCHETT, DAGENHAM" CODES USED:…

Scan163 Letter to E. Fowler Clark, Esq. regarding the dispatch of batteries.
View original record - 2 - E. Fowler Clark, Esq. 28/10/29. quantities on the Continent. With regard to your batteries, I am afraid that these were sent off last Thursday, so that I was too late to stop them. Yours…

Scan164 Letter to Peto & Radford Ltd. acknowledging their correspondence about batteries and arranging delivery of a packing case.
View original record X4617P. EFCL/AD. 1st November, 1929. Messrs. Peto & Radford Ltd. 50, Grosvenor Gardens, London, S.W.1. Dear Mr. Pritchett, I thank you for yours CGFP/4. of Oct. 28th together with enclosed curves.…

Scan165 Test results for a PoRRII-3 battery, detailing its performance after 43 months of bench life testing.
View original record 6.7.6 X4617P. 8-7-30 JD 88. X4617P Tests on PoRRII-3 Battery (182) This battery has now run 3977 miles, has been on our Bench Life Test 43 months & is 3 yrs 9 months old. On Low Rate Discharge 88.1…

Scan166 Electrical experimental record sheet for battery testing.
View original record X4617P ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 4617P P4R2-6RR11-1 Battery (157) Late on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. |…

Scan167 Chart recording from an electrical test showing amperes over time.
View original record 3-11-26 182 PaRRRII-3 97 lbs 75 a.h. Average amperes = 6.2 Hours = 11.7 Ampere hours = 72.6 .75 1.80w REG. TRADE MARK "MEGGER"

Scan168 Chart recording from a 'Megger' recorder showing an electrical test, possibly a battery discharge, with handwritten calculations.
View original record 10-11-26 182 P&R RRII-3 97 lbs 75 a.h. Average amperes - 6.21a Hours - 10.6 Ampere hours - 66.0 680 1.80w TRADE MARK "MEGGER" RECORDER

Scan169 Graph chart recording the results of a battery charge and discharge test.
View original record 6-7-27 182 P&R RR11-3 75 a.h. 97 lbs. Charged at a constant current of .6 amperes for 16 hours. Average amperes = 6.4 Hours = 13.2 Ampere hours = 84.5 .871 1.80 w TRADE MARK KENT GEORGE

Scan170 Chart recording a battery charge and discharge test with performance data.
View original record 8-7-27 182 P&R RR11-3 75 a.h. 97 lbs Charged to modified characteristic of V = 16 - .15A for 10 hours. Average amperes = 6.39 Hours = 12.9 Ampere hours = 82.4 .850 1.80v

Scan171 Chart recorder graph showing the results of an electrical component test.
View original record 11-7-27 182 P&R RRII-3 75 a.h. 97 lbs. charged to modified characteristic of V = 10 - .15A for 10 hours. Average amperes = 6.4 Hours = 13.0 Ampere hours = 83.2 .859 1.80ω

Scan172 Graphed record of a battery performance test, showing discharge characteristics.
View original record 13-7-27 182 P&R RR11-3 75 a.h. 97 lbs. charged to modified characteristic of V=1.6 - 6.5A for 19 hours. Average amperes = 6.41 Hours = 13.1 Ampere Hours = 87.0 .866 1.80w

Scan173 Chart recording of an electrical component test, detailing charge and discharge characteristics.
View original record 16-7-27 182 P&R RR11-3 75 a.h. 97 lbs. charged at a constant current of 6 amperes for 16 hours. Average amperes = 6.41 Hours = 13.1 Ampere hours = 84.0 -.866 1.80w

Scan174 Graph chart documenting an electrical test with performance data and calculations.
View original record 1-11-28 182 P&R RRII-3 75 c.h. 97 LBS Average amperes = 6.35 Hours = 14.0 Ampere hours = 88.9 .917 1.80w

Scan175 Graphical log from an electrical test showing ampere discharge over time.
View original record 27-9-29 182 P&R RRII-3 97lbs. 75a.h. Average amperes = 6.35 Hours = 13.5 Ampere hours = 85.7 .885 1.80w

Scan176 Chart recorder graph showing results from a battery discharge test.
View original record 5-7-30 182 P+R RRII-3 75 a.h. 87 lbs. Average amperes = 6.43 Hours = 13.7 Ampere Hours = 88.1 .008 1.80w TRADE MARK

Scan177 Electrical experimental record sheet for a P4RRII-3 battery, tracking tests and mileage.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS X. & No:- 4617P P4RRII-3 Battery (182) | Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total…

Scan178 Electrical experimental record sheet for a battery, tracking tests, dates, and mileage.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. XNO: 4617P Page 2 P&RRR11-3 Battery (182) | Date on. | Location | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total…

Scan179 Routine treatment of a car lighting and starting battery.
View original record X 4617.S ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 22-6-25 Battery under treatment :- S.4. (157) Rated capacity :- 80 ampere hours. Received charged or uncharged :- Charged. X.…

Scan180 Battery test report detailing charge cycles, density readings, weight, and ampere-hours.
View original record -2- contd. Date. (6) Second charge :- Amperes. from __ to __ hours Amp.hrs. Total ______ (7) Emptying and refilling, or adjusting densities and levels. (7a) Density readings for battery received…

Scan181 Battery charging tests, detailing charge cycles, cell densities, and temperatures.
View original record -3- (13) Third charge equivalent to average current of 6.0 amperes for 16.5 hours. i.e. ampere-hours = 99.0 (14) Cell densities. (1) 1280 (4) 1250 (2) 1250 (5) 1280 (3) 1280 (6) 1250 (15) Initial…

Scan182 Form for recording the routine treatment of car lighting and starting batteries.
View original record X. 4617 S ROUTINE TREATMENT OF CAR LIGHTING & STARTING BATTERIES. Date:- 22-6-25 Battery under treatment :- S1. (154) Rated capacity :- 80 ampere hours. Received charged or uncharged :- charged X.4617…

Scan183 Test report detailing battery charge levels, density readings, and weight measurements.
View original record contd. Date. -2- (6) Second charge :- Amperes. from to hours Amp.hrs. Total (7) Emptying and refilling, or adjusting densities and levels. (7a) Density readings for battery received charged. (1) 1280…

Scan184 Log of battery charging and performance tests, detailing current, ampere-hours, cell densities, and temperature.
View original record -3- Date. (13) Third charge equivalent to average current of 6.0 amperes for 17.0 hours. i.e. ampere-hours = 102 30-6-25 to 1-7-25. (14) Cell densities. (1) 1280 (4) 1250 (2) 1250 (5) 1280 (3) 1280…

Scan185 Battery test chart comparing the voltage of R&R cells to Exide cells during discharge.
View original record 154 S1 Battery 102 lbs 80 a.h. The voltage of the R&R cells were much lower than the Exide cells whilst standing discharged. Average amperes = 6.35 Hours = 9.25 Ampere hours = 58.8 576. 1.80v REGd.…

Scan186 Test chart graphing the performance and detailing the statistics of an S1 battery.
View original record 6-7-26 154 SI S1 Battery 102 lbs 80 a.h. Average amperes = 6.48 Hours = 9.0 Ampere hours = 58.3 .571 1.80w RECD TRADE MARK T.M.E.C.C.L.

Scan187 Battery discharge test chart for a 'Sandwich battery S2 -E'.
View original record 12-8-25 X4617 155 Sandwich battery S2 -E 103 lbs 80 a.h. REGD TRADE MARK 'MEGGER' Ampere hours = 6.42n Hours = 10.33 Ampere hours = 66.3. -646. 1.80w

Scan188 Instructions detailing the results of bench tests on an S2 Sandwich battery.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X.4617.S 108681 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To B.F.B. Order No. Customer's No. X4617 Re JB115. Re Tests on S2 Sandwich Battery. This battery was…

Scan189 Instructions regarding the voltage discharge rates of P&R and Gould battery cells.
View original record RR 300 (20 Bks.) (SK 354 5-12-22 MP 264049) 108 ROLLS-ROYCE LIMITED. INSTRUCTIONS. II To Order No. Customer's No. Re: JB115. It was noticed on the high rate discharge, when discharged down to about 80…

Scan190 Requesting an order for various battery cells and containing boxes for experiments.
View original record X4617S To Wd. from EFC. EFC5/T16.11.25. X.4617. RE 40/50 BATTERIES. For further sandwich battery experiments of Oldham and Fuller cells with present standard Exide and P & R cells, we require three…

Scan191 Requesting an order for two different types of battery containing cases for testing purposes.
View original record X4617S To Wd. from EFC. EFC5/T19.11.25. RE 40/50 BATTERIES. Further to our EFC6/T16.11.25, will you kindly order up two further battery containing cases, as follows :- 1 standard Exide six-cell…

Scan192 Diagram illustrating various configurations for experimental sandwich batteries.
View original record X.4607S EXPERIMENTAL SANDWICH BATTERIES. - + SX [P&R O] [E< std] [E<] [P&R] [E<] [E< std O] SY [E< O] [P&R] [E< std] [Fuller] [P&R] [Oldham O] SZ [F O] [O] [F] [E< std] [O] [P&R O] SJ [F O] [O] [F]…

Scan193 Instructions for tests on a 'Sandwich' battery composed of various standard cell types.
View original record RR. 300 (20 Bks.) (SK 354 5-12-22 MP 264049) X 467S 108706 ROLLS-ROYCE LIMITED. INSTRUCTIONS. To: C.F.B. Date: 7-12-1925 Order No.: Customer's No.: Re: J.B.135. Re Tests on Sandwich Battery SY This…

Scan194 High-rate discharge test and comparison of various battery types.
View original record ROLLS-ROYCE LIMITED. INSTRUCTIONS. Re: J B 85. After this a High Rate Discharge through an invariable external resistance 100W was taken. The initial amperes were 103. Time to 100 amperes = 4.5 min "…

Scan195 The routine treatment of a car lighting and starting battery.
View original record X. 4617 S. ROUTINE TREATMENT OF CAR LIGITING & STARTING BATTERIES. Date:- 22-3-26 Battery under treatment :- Sandwich SV Rated capacity:- 75 amperes.hours. Received charged or uncharged :- Charged.…

Scan196 Report page detailing battery charging, density readings, and weight measurements.
View original record -2- Contd. Date. (6) Second charge :- Amperes. from __ to __ hours amp.hrs. Total (7) Emptying and refilling, or adjusting densities and levels. OK. (7a) Density readings for battery received charged.…

Scan197 Log of battery charge and discharge tests, recording current, duration, cell densities, and temperatures.
View original record -3- (13) Third charge equivalent to average current of 8.0 amperes for 15.0 hours. i.e. ampere-hours = 120 (14) Cell densities. (1) 1260 (4) 1280 (2) 1280 (5) 1260 (3) 1280 (6) 1280 -P-1.70 volts…

Scan198 Chart recording from a Megger instrument showing the results of a battery discharge test.
View original record 9 7 SV 8 9 10 11 12 23-3-26 177 Sandwich SV 103 lbs 75 a.h. REGD TRADE MARK 'MEGGER' Average amperes = 6.25 Hours = 6.55 Ampere hours = 41.1 .400 1.80w

Scan199 Graph showing the results of an electrical battery discharge test.
View original record 6 7 SV 8 S.V. 9 1-4-26 10 11 31-3-26 177 Sandwich SV 103 lbs 75 ah REGD TRADE MARK "MEGGER" Average amperes = 6.39 Hours = 6.40 Ampere hours = 40.8 .396 1.80w

Scan200 Re-test report on a Sandwich SX battery from chassis 98NK, detailing its performance under low and high rate discharge tests.
View original record RR 238 (180 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.B. Order No.: JC18 Customer's No.: X4617.S. Re Test on Sandwich SX Battery. This battery was taken off chassis 98NK…

Scan201 Instructions and results from a test on battery cell discharge and capacity.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. II 19 To Order No. JC18 Customer's No. The cell P.D.s. discharging at approx 90 amperes were - P&R C.E. P&R C.E. + 1.20 1.70 1.70 1.05 1.70 1.70 All cells showed…

Scan202 Graph plotting performance data with calculations after the subject stood for 14 days.
View original record 6 7 SU 8 9 10 8-4-26 176 SU 104 lbs 75 a.h. REGD. TRADE MARK GECER After standing for 14 days. Average amperes = 6.21 Hours = 5.25 Ampere hours = 32.6 .314. 1.80w

Scan203 Graph chart detailing the results of what appears to be a battery discharge test.
View original record 6 7 SU 8 X4617S 9 10 11 12 12-4-26 176 SU 104 lbs 75 a.h. REGD. TRADE MARK 'MEGGER' Immediately after charge. Average amperes = 6.21 Hours = 6.5 Ampere hours = 40.0 .384. 1.80w

Scan204 Table detailing the configuration of experimental 40/50 sandwich batteries.
View original record X 46175 12.4.26. EXPERIMENTAL 40/50 SANDWICH BATTERIES. No. Label. Case. BATTERY - + 154. S1. P Exide P&R Exide P&R Exide P&R 155. S2. E. P&R Exide P&R Exide P&R Exide 156. S3. P. P&R Exide P&R Exide…

Scan205 Leakage test results for an SU Battery.
View original record RR 238 (150 BKS.) (DB 461-B-12-24) MP 306975 X. 4617 S. ROLLS-ROYCE, LTD. INSTRUCTIONS. To C.F.C. Order No. JB19 Customer's No. X.4617S. Leakage Test on SU Battery This battery was fully charged &…

Scan206 Extract from a letter concerning the premature failure of battery cells after 16,000 miles in an experimental car.
View original record X46178 Extract from letter ref. M/5. 15th April 1926 from Messrs. Peto & Radford. ------- X.4617P. "Commander Briggs tells me that in a composite battery which he had on his experimental car in France…

Scan207 Requesting the return of an experimental sandwich battery from chassis 11-EX for analysis.
View original record W/S. CWB. from EFC. X4617 S. EFCl/T24.4.26. Experimental Chassis 11-EX. X4617 There was on this chassis an experimental sandwich battery of different cells. From reports now received it is understood…

Scan208 The condition of a battery from Experimental Chassis No. 11-EX.
View original record S/W. Hs. Copy to:- ETC. X4617 S CWB1/GM/28-4-26. Experimental Chassis No. 11-EX. The original battery supplied with the above chassis from W. is still in use. It has been taken off the car only for…

Scan209 Examination report on the condition of battery number 170 after removal from chassis 11EX.
View original record RR 238 (150 BKS.) (SH57 29.6.20.) MP 224355 X4617 S ROLLS-ROYCE LTD. INSTRUCTIONS. To E. Y. B 11 - 5 to 26 Order No. WB 85 Customer's No. X SY. Battery NO 170 off 11 EX This battery consists of…

Scan210 Instruction sheet detailing the inspection and reconditioning of various battery cells.
View original record RR 238(150 BKS.) [SH57. 29-8-20.] MP 224358 ROLLS-ROYCE LTD. INSTRUCTIONS. To _________ 19__ Order No. _________ Customer's No. _________ 1 P+R Both cells had cracked badly where sealed at the top. 2…

Scan211 Re-testing an SY Battery after it had completed 9012 miles.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 308978 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: E.A.G. Order No.: JC 30. Customer's No.: X4617S Re tests on SY Battery This battery had completed 9012 miles when taken…

Scan212 High-rate discharge battery test comparing different cell types.
View original record RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II To:___________________ 19_______ Order No. J.C.30 Customer's No.____________ weakness on the cadmium. After a further…

Scan213 Graph chart recording from a Megger electrical test showing amperes over time.
View original record 19-7-26 154 S1. 75 a.h. 10/b. EVERSHED'S TRADE MARK "MEGGER" Average amperes = 6.25 Hours = 10.3 Ampere hours = 64.5 .640 1.80v X

Scan214 Chassis 12-EX after 6000 miles, detailing battery and ammeter performance.
View original record X4617S Extract from GWH1/RP19.8.26. REPORT ON CHASSIS 12-EX. EAC.8 AFTER 6000 MILES. Battery. X.4617S. Battery fitted with half Exide and half P & R cells. The battery is still in good condition. The…

Scan215 The electrical fittings, battery, and ammeter of chassis 12-EX. EAC.8 after a 9000-mile test.
View original record X46175 Extract from GWH2/RP23.8.26. REPORT ON CHASSIS 12-EX. EAC.8 AFTER 9000 MILES Electrical Fittings. X.8780. X.4105. Distribution board and cutout D box modified with C type contacts, rigid…

Scan216 Chart recording from an electrical test, showing a plotted graph and handwritten calculations.
View original record 5 6 S2 7 8 9 10 11 12 1 2 3 17-9-26 155 S2 1/2 103 lbs. 75 a.h. REGO. TRADE MARK "MEGGER" Ampere hours = 58.6 Hours = 9.5 Average amperes = 6.16 570 1.80w

Scan217 Instructions and results for a re-test on an S2 battery taken from chassis 9PH.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E & C. Date: 22-7-1926 Reference Number: X4617S Order No.: 5644 Customer's No.: x4617S Re Test on S2 battery (155) This…

Scan218 The bench test results of a high-rate discharge test on an S1 battery.
View original record T.I RR 23B (150 BKS.) (DB 461-8-12 24) MP 306975 X4617S ROLLS-ROYCE, LTD. INSTRUCTIONS. To: C.E.L. Date: 15-10-1926 Order No. JC45 Customer's No. X4617S Re Test on S1 battery (154) This battery was…

Scan219 Bench test results for an SJ Battery (172) removed from vehicle 9EX.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. To: B.T.L. Order No.: IC49 Customer's No.: X4617S Re tests on SJ Battery (172) This Battery was removed from 9EX for bench tests, & on a low rate discharge being taken…

Scan220 Instruction sheet with a handwritten report on a battery performance test.
View original record RR 236 (150 BKS.) (DS 431-8 12 24) MP J06975 ROLLS-ROYCE LTD. INSTRUCTIONS. II To Order No. JC49 Customer's No. All cells went down equally & shewed negative weakness on the Cadmium. The tests on this…

Scan221 The re-testing of an S4 battery after completing significant mileage.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X46175 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.B. Order No.: JC53 Customer's No.: X46175 Re-Tests on S4 Battery (15V) This battery has now completed 21,995…

Scan222 High-rate discharge test of a battery, noting cadmium weakness.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. II 19 To Order No. T.C.53. Customer's No. weakness was shown on the Cadmium. After a good charge a high rate discharge was…

Scan223 Instruction sheet detailing an experiment on battery charging characteristics.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. Y467S To: E.7.G. Date: 3-1-1927 Order No.: JC 61 Re Experiment on Battery Charging to a characteristic V=17-25A. Further to…

Scan224 Instruction sheet detailing battery charge and discharge test results, noting capacity in ampere-hours.
View original record RR 238 (180 BKS.) (DS 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II 19 To Order No. JC 61 Customer's No. sustained PD was 151. It was then again discharged or 58.5 ampere hours were…

Scan225 Instructions regarding a faulty SV battery with a shorted and leaking Oldham cell that needs removal for investigation.
View original record RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 X46175 ROLLS-ROYCE, LTD. INSTRUCTIONS. To E.J.B. Order No. TC 60 Customer's No. 31-12-1926 Re SV Battery (177) This battery has one Oldham cell shorted…

Scan226 Battery test detailing corrosion, a broken vent, and low capacity after road use.
View original record RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E&B Order No.: SC 62 Customer's No.: X4617S Report on SZ (171) Battery from 44PLT This battery was taken from the above…

Scan227 High-rate discharge battery test, noting the poor performance of Oldham & Fuller cells.
View original record RR 236 (150 BKS.) (D9 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. I To. ____ 19__ Order No. IC 62. Customer's No. After a full charge the battery was given a high rate discharge through a…

Scan228 Instruction sheet detailing re-tests on a 5V battery following a cell failure.
View original record RR 238 (150 BKS.) (DB 461-8-12 24) MP 306975 X4617S ROLLS-ROYCE LTD. INSTRUCTIONS. 20-1-1927 To: CLG. Order No.: Jeble. Customer's No.: X4617S Re tests on 5V Battery (173) This battery was removed…

Scan229 Instruction sheet noting poor results from two Oldham cells due to poor capacity during a cadmium test.
View original record RR 239 (150 BKS.) (DB 451-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II. 19 To Order No. TC 66 Customer's No. the cadmium. The poor results obtained are due to the poor capacity of the two…

Scan230 Instructions and results from tests performed on an SU Battery (176).
View original record R.R 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.E.C. Order No. I.C.70. Customer's No. 4617 S. Re Tests on SU Battery (176) This battery was given a low rate…

Scan231 The bench testing of an S2 battery (155) removed from chassis 8EX.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.7.6. Order No.: J.C.74. Customer's No.: X4617S. Re Tests on S2 Battery (155). This battery was removed from chassis 8EX for bench tests to be taken after having…

Scan232 Instruction sheet detailing the results of re-tests on an SX battery after road and bench trials.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (DB 451-8-12-24) MP 306975 To: E.F.C. Order No.: I.C.75. Customer's No.: X46175. Re-tests on SX battery (159) This battery has now completed 7,855…

Scan233 Graph record of a battery being charged at a continuous current.
View original record 5-1-27 154/ S1 X4617 S1 Battery charged at a continuous current of 6 amperes. Average amperes = 6.07 Hours = 9.0 Ampere hours = 54.7 REGD TRADE MARK "MEGGER" .542 1.80w.

Scan234 Chart detailing the characteristic curve of an S1 battery during charging.
View original record 1-1-27 154 S1 battery charged to characteristic V=17 - .25A 2 Average amperes = 6.16 Hours = 9.5 Ampere hours = 58.5 .580 1.80w REG'D TRADE MARK "MECCERT"

Scan235 Performance graph chart from an S1 battery test.
View original record 5-1-27 154 S1 Battery charged to characteristic V = 17.25A Average amperes = 6.20 Hours = 9.6 Ampere hours = 59.5 TRADE MARK "MEGGER" .589 1.80W 3/1

Scan236 Test log on graph paper recording amperage, hours, and weight.
View original record SV 7 17-1-27 177 SV 75ah 103 lbs Average amperes = 6.30 Hours = 4.2 Ampere hours = 26.4 256 1.80w

Scan237 Battery discharge test result chart showing performance over time.
View original record X46175 2-2-27 170 SU 75 a.h. 103 lbs. Average amperes = 6.15 Hours = 4.9 Ampere hours = 37.8 .36) 1.80w

Scan238 Graph chart recording amperage over time with handwritten calculations and notes.
View original record S2 15-2-27 155 S2 75 a.h. 101 Lbs. Average amperes = 6.24 Hours = 10.25 Ampere hours = 64.0 .634 1.80w After 13377 miles EVERETT EDGCUMBE & Co Ltd LONDON & HENDON

Scan239 The performance and discharge curves of Exide & P & R batteries for the 40/50 HP chassis after extensive road and bench testing.
View original record To R. from EFC. c. RJ. PN. E. c. Da. Wor. EP. Cc. By. Roy. Wd. 40/50 HP. CHASSIS. EXIDE & P & R BATTERIES. We are issuing low and high rate discharge curves of present standard batteries, after…

Scan240 Report comparing the performance of a standard 12-volt battery against various alternatives and noting a future report on 20 HP batteries.
View original record -2- Contd. CERTIFICATE OF INSPECTION BY A.I.D. SPARES 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…

Scan241 The bench tests of an S2 battery after removal from chassis 8-EX.
View original record 1 Copy to Mr H.S. V.D. 2 Copies to Mr FW 1 Copy to Mr ECK EFC. JC. 74. COPY. RE TESTS ON S2 BATTERY (155). This battery was removed from chassis 8-EX for bench tests to be taken after having run 13377…

Scan242 Test report on an SX Battery (159) detailing road mileage and bench test discharge results.
View original record CERTIFICATE NO. EFC. COPY 24.2.27. JC.75. CERTIFICATE OF INSPECTION BY A.I.D. ROLLS-ROYCE ENGINES AND SPARES RE TESTS ON SX BATTERY (159) This battery has now completed 8231 miles on the road. On…

Scan243 Performance graph detailing average amperes, hours, and ampere-hours after a mileage test.
View original record 15 - 2 - 27 155 S2 75 A. HRS. 101 LBS AVERAGE AMPERES = 6.24 HOURS - 10.25 AMPERE HOURS - 64.0 .634 1.80 W AFTER 13377 MILES

Scan244 Blueprint graph showing electrical performance test data including amperage, hours, weight, and mileage.
View original record 21 - 2 - 27 159 SX 75 A. HRS. 103 Lbs AVERAGE AMPERES = 6.34 HOURS = 11.0 AMPERE HOURS = 69.7 .675 180 w. AFTER 8231 MILES

Scan245 Graph showing continuous high rate discharge curves for 40-50 HP chassis batteries.
View original record 40-50 H.P CHASSIS BATTERIES CONTINUOUS HIGH RATE DISCHARGE CURVES THROUGH INVARIABLE EXTERNAL RESISTANCE OF .100 OHM. BATTERIES- 155, 159 AMPERES OR TEN TIMES TERMINAL VOLTS TIME (MINUTES) S.2 101 LBS…

Scan246 Bench tests performed on an SY Battery, detailing low and high rate discharge results.
View original record RR 239 (150 BKS.) (DB 461-8-12-24) MP 306975 X4617S ROLLS-ROYCE LTD. INSTRUCTIONS. To: E & C. Order No.: JC.76. Customer's No.: X4617S Re tests on SY Battery (170) This battery was taken from the M.S.…

Scan247 Requesting the temporary removal of the Sandwich Battery S3 from chassis 10-EX for laboratory tests.
View original record To RHC. from EFC. X467S EFC1/T30.4.27. SANDWICH BATTERY S3 ON CHASSIS 10-EX. As we understand this chassis is to be in the shop during next week, we should like to have the battery temporarily removed…

Scan248 Chart recording of a battery discharge test showing a steady current over time.
View original record 5 6 SJ 7 8 X46975 9 10 11 12 9-11-26 172 SJ 103 lbs 75 ah. Average amperes = 6.02 Hours = 6.25 Ampere hours = 37.6 .365 1.80w. PECCA TRADE MARK 'MEGGER'

Scan249 Experimental record sheet tracking the mileage and testing of an SJ.(172) battery from 1925 to 1927.
View original record X4617S ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617S SJ.(172) Battery. Date on. | location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total miles…

Scan250 Electrical experimental record sheet logging a battery test with mileage.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS X. & No: - 66175 SJ(172) Battery Page 2 Date on. Location. Date off. REMARKS. Miles reading start. Miles reading finish. Miles covered. Total miles. 15-4-27 12EX…

Scan251 Chart recording from an electrical test showing amperage over time, with calculated results.
View original record 6-5-27, 156, S3, 75a.h., 103 lbs., Average amperes = 6.31, Hours = 9.2, Ampere hours = 58.0, .563, 1.80w., TRADE MARK 'MEGGER'

Scan252 The testing of an S.3. Battery, number 156, removed from vehicle 10EX.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X46175 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E & Co. Order No.: JC 32. Customer's No.: Re Tests on S.3. Battery 156 This battery was removed from 10EX after…

Scan253 Graph chart recording data from a battery discharge test.
View original record 2-6-27 154 S1 75 a.h. 103 lbs. Average amperes = 6.32 Hours = 9.5 Ampere Hours = 60.0 .582 1.80w.

Scan254 Instruction sheet detailing a bench test on a battery.
View original record RR 236 (150 BKS.) (DB 431-8 12 24) MP 306975 X46175 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.H.C. Order No. JC 87 Re Test on S1 Battery (154). This battery was removed from 35EX for bench test after having…

Scan255 Instructions and results for a re-test on an S1 battery after it has run 12,956 miles.
View original record RR 238 (150 BKS.) (DD 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. x4617 S. To E.T.L. 6-9-27 Order No. J.C.94. Customer's No. x 4617 S. Re Test on S1 Battery (154) This battery has now run…

Scan256 Results of low and high rate discharge tests on a Sandwich S4 battery.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 Y46175 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.F.C. Order No. IC 96. Customer's No. X46175. 3-10-1927 Re Tests on Sandwich S4 Battery (15Y) This battery has…

Scan257 Instruction sheet noting cadmium 'readways' (readings) on charge.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP J06975 ROLLS-ROYCE LTD. INSTRUCTIONS. II To Order No. 5C96 Customer's No. 19 The cadmium readways on charge are as follows. Exide +2.45 -.10 P&R 2.40 -.40 Signed…

Scan258 Letter from Peto & Radford regarding modifications to batteries and their expected lifespan.
View original record X.4617.D. PETO & RADFORD, 50 GROSVENOR GARDENS, LONDON, S.W.1. M/5. 17th October, 1927. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, In reply to yours of the 4th inst., EFCl/T re modifications in the…

Scan259 Acquisition of 6-volt battery boxes to reconfigure 12-volt units for comparative cell tests on experimental cars.
View original record To EY. from EFC. c. EY/HEB. X4617S EFC2/T1.3.28. TWO-UNIT BATTERIES. X7735 Now that we shall be running experimental cars mostly with two unit rear of frame battery boxes and batteries, we shall have…

Scan260 Instruction sheet detailing the test results for a failed 5Z battery and its subsequent repair.
View original record RR 236 (150 BKS.) (DB 431-8 12 24) MP 306975 X46175 ROLLS-ROYCE, LTD. INSTRUCTIONS. To E7L Order No. S.P.A.2. Customer's No. 3-3-28 Test on 5Z Battery (171) The two Oldham cells in this battery have…

Scan261 Performance test of different types of battery cells.
View original record RR 238 (150 BKS.) (DD 431-8 12 24) MP 306975 ROLLS-ROYCE, LTD. INSTRUCTIONS. To E.F.b. (2) Order No. S.P. A2. Customer's No. Initial Amperes = 99.5 Time to 90 " = 7.5 mins " " 80 " = 8.4 " All cells…

Scan262 Results of bench tests on SU & SV batteries, detailing low and high rate discharge performance.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: C.C.C. Order No. J.C.106. Customer's No. X 46175 Re Tests on SU & SV Batteries (176 & 177) The above two batteries were…

Scan263 Instruction sheet detailing test results for cells, recording amperage drops over time and noting the performance of Oldham cells.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II 19 To J.C.106. Order No. Customer's No. S.V. Initial amperes = 100.5 amperes. Time to 100 " = 1.6 mins " " 90 " = 7.8 " "…

Scan264 Instruction sheet detailing the results of low and high rate discharge tests on an S2 Battery.
View original record R.R. 258 (150 BKS.) (DB 431-8-12-24) MP 306975 X. 46175 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: C.E.C. Order No.: JC III Customer's No.: Re Tests on S2 Battery (155) On Low Rate discharge through a…

Scan265 Test and usage log for an SY Battery (170), tracking its location, remarks, and mileage over several years.
View original record X4617S ELECTRICAL DEPARTMENT. TESTED PARTS. X. No:- 4617S SY Battery (170) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles.…

Scan266 Letter to Peto & Radford regarding faulty screw threads on vent plugs for 40/50 HP car batteries.
View original record X46175 c. Roy. c. EY c. Mailing. EFC5/T. 5th July, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, LONDON, S.W.1. Dear Sirs, P & R. Batteries for 40/50, R.R. CARS. We are writing to you on two…

Scan267 The failure of P & R cells in 40/50 type Sandwich Batteries and 20 HP batteries.
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…

Scan268 Page 3 of a letter discussing the condition and history of failed battery cells, including a 20 HP battery.
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…

Scan269 Graph showing the results of a battery discharge test.
View original record 7-6-28 176 SU 75 a.h. 104 lbs. Average amperes = 6.24 Hours = 3.7 Ampere hours = 23.1 .222 1.80w

Scan270 The failure of P & R battery cells, detailing the cause of the shorting and suggesting a design improvement.
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…

Scan271 The failure of cell No. 6 in a P & R TBD7-10 Battery (158) 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…

Scan272 Letter from Peto & Radford concerning test batteries, plate clearance, and vent plugs.
View original record x46178 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. (5 LINES PRIVATE BRANCH EXCHANGE). TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan273 Letter from accumulator manufacturers Peto & Radford arranging a visit to discuss cells.
View original record X 46175 E7C Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators Established 1889 PETO &…

Scan274 Letter to Messrs. Peto & Radford arranging a visit for Mr. Preston to inspect opened cells.
View original record X46173 EFC2/T. 14th July, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, For the attention of Mr. G.R.N.Minchin. We are in receipt of yours M/5. of the 12th instant…

Scan275 Letter from Peto & Radford confirming a visit from Mr. Preston the following day.
View original record X46175. Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES. PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators. Established 1889 PETO &…

Scan276 Telegram confirmation arranging for Mr. Preston to visit the Experimental Department.
View original record THE "OVERALL" TELEGRAM BOOK. TELEGRAM CONFIRMATION. 19 We have pleasure in handing you below Duplicate of Telegram sent to you this day. TO{ ROYCAR, DERBY. Date 18th July, 1928. Our Mr. Preston will…

Scan277 Returning failed battery plates and surplus material to the supplier, Peto & Radford.
View original record To Roy. from EFC. c. Despatch Stores. X46175 EFC6/T19.7.28. We are sending into the Stores a set of sulphated plates from one of their batteries which has failed. Will you kindly instruct for these to…

Scan278 Letter to Messrs. Peto & Radford regarding faulty cells and the return of materials for credit.
View original record X.46175 c. Mailing c. Roy. EFC4/T. 19th July, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, Further to ours of the 5th inst. under cover of which we sent copy of our…

Scan279 Page 2 of a letter regarding an enquiry for undelivered wooden plate type separators.
View original record -2- Contd. We have made enquiries in our Stores with regard to the wooden plate type separators mentioned in your letter ref.JW/5. of the 18th inst. and find that these have not been received by us…

Scan280 Investigation into the failure of a P & R cell in an SS battery after two years of service.
View original record EFC. JC.114. RE FAILURE OF P & R CELL IN SS. BATTERY (180) The above cell failed after only two years' service. Mr. Preston from Messrs. P & R was here and witnessed the opening up of this cell. All…

Scan281 The failure of a P & R cell in an S4 battery after extended service and testing.
View original record EFC. JC.115. 19.7.28. FAILURE OF P & R CELL IN S4 BATTERY (157) No.6 cell in this battery has failed after 3 years 1 month service. It has run 31,051 miles on the road and has been on our bench life…

Scan282 Letter from Peto & Radford concerning issues and the supply of accumulator cells.
View original record X4617S 2 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS 'CONCENTRATION, SOWEST, LONDON.' Manufacturers of P & R Accumulators. Established 1889 PETO &…

Scan283 Letter from Peto & Radford detailing modifications to battery separators and bus bars.
View original record PETO & RADFORD. CONTINUATION 2. Messrs. Rolls Royce Ltd., 26th July 1928. 2. Standard R.R.11 - wood and ebonite separators extended ¼" above plates and hold-downs reduced ¼". 3. Bus Bar on Standard…

Scan284 Battery discharge performance test chart showing a voltage curve over time.
View original record 5 6 7 8 9 10 11 8-6-28 177 SV 75 a.h. 103 lbs. 5 4 3 2 1 0 Average amperes = 6.48 Hours = 5.9 Ampere hours = 38.2 .371 1.80v

Scan285 Graphical chart recording the results of a battery discharge test.
View original record Top line: 25-6-28 155 S2 75 a.h. 103 lbs Central data block: Average amperes = 6.06 Hours = 10.0 Ampere hours = 60.6 Other numbers on chart: -.589, 1.80v Faint text on right: RECORD MADE BY EVERETT,…

Scan286 Chart recording of an electrical test, possibly a battery discharge, with handwritten calculations.
View original record 16-8-28 156 S3 75 a.h. 103LBS. Average amperes = 6.32 Hours = 9.5 Ampere hours = 56.9 .552. 1.80w REGD. TRADE MARK. "MEGGER"

Scan287 Battery failure on the 10-EX Blue Sports Car and a request for a test battery to be returned.
View original record G.J X46178 Hs. Hote. [crossed out] H.E. Platford [signature] Hs. to from Mx. Mx7/T13.8.28. 10-EX - Blue Sports Car The Battery on this car failed during the time Hm. and I were using it, and I…

Scan288 The failure of a P & R cell in an SS battery.
View original record X46175. EFC. JC. 147. 17.8.28. RE FAILURE OF P & R CELLS IN SSx BATTERY (15g%) No.4. cell has failed in the above battery after only running 13,787 miles in 2 years 7 months, and 6 months on our bench…

Scan289 Analysis of a Fuller cell battery failure after 10,000 miles and 2 years of testing.
View original record RR 236 (150 BKS.) (DB 431-6 12 24) MP 306975 X46175 ROLLS-ROYCE, LTD. INSTRUCTIONS. To: G.F.G. Order No.: JE119 Customer's No.: X46175 Date: 17-8-1928 Re Failure of Fuller cell in SZ Battery(17) No 1…

Scan290 Electrical experimental record sheet for a SZ (171) battery test.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617 SZ (171) battery | Date on | Location | Date off | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles |…

Scan291 Electrical experimental record sheet for battery SZ(171), page 2.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No:- 4617 SZ(171) Battery Page 2 Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered. | Total miles.…

Scan292 Instructions regarding the failure of a P&R cell in an S3 battery after nearly 15,000 miles.
View original record RR 238 (150 BKS.) (DD 431-8 12 24) MP 306975 X4698 ROLLS-ROYCE LTD. INSTRUCTIONS. To E.T.C. Order No. J.C.118. Customer's No. Re Failure of P&R cell in S3 Battery (56) No1 cell failed in the above…

Scan293 Replacing an experimental battery on the 10-EX car.
View original record Y7607S To RHC. from EFC. c. Hs/AJL. EFC5/T18.8.28. BATTERY FOR 10-EX. S 3. Our own experimental battery for 10-EX is now ready to be replaced on that car, releasing the Test Dept. battery which can…

Scan294 Letter to The Chloride Elec. Storage Co. Ltd. regarding premature rotting of Exide battery cases and placing an order for replacements.
View original record X46175 c. Ey. c. Roy. c. Meiling. EFC2/T. 18th August, 1928. Messrs. The Chloride Elec. Storage Co.Ltd., Clifton Junction, Nr. Manchester. For the attention of Mr. E.C.McKinnon: Dear Sirs, You will…

Scan295 Letter to Messrs. Peto & Radford concerning P & R cell failures and enclosing a report on the matter.
View original record 146175 EFCL/T. 18th August, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, We duly received yours of the 26th ult., with reference to P & R. cell failures which we…

Scan296 Letter from The Chloride Electrical Storage Company Ltd. arranging an inspection of material.
View original record X46178? ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED TELEPHONES:- PENDLETON 481 (6 LINES) TELEGRAMS:- CHLORIDIC, PENDLEBURY. CODES:- BENTLEYS,…

Scan297 Test results for a battery after 30,000 miles, detailing low and high rate discharge performance.
View original record R.R. 238 (150 BKS.) (DB 431-8 12 24) MP 306975 X461SS ROLLS-ROYCE, LTD. INSTRUCTIONS. To: C.T.C. Order No. J.C.122. Customer's No. X461SS Re Tests on S3 Battery (156) This battery has now run nearly…

Scan298 Instruction sheet detailing low and high rate discharge tests on an SX battery that has run 13,787 miles.
View original record R.R. 236 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.W.G. Order No. I.C.121. Customer's No. x4617S. Re Tests on SX Battery (159) This battery has now run 13,787 miles on…

Scan299 Graphical chart recording an electrical test, displaying amperage over time.
View original record 4-9-28 176-7 SUGSV 75a.l. A-9-28/1 (struck through) Average amperes = 6.32 Hours - 10.2 Ampere hours .64.5 1.80w.

Scan300 Tests conducted on SU and SV batteries, detailing cell configuration and discharge results.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X46178 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.T.E. Order No.: J.C.126. Customer's No.: 6-9-1928 Re Tests on SU & SV Batteries (176-7) The Std cells from…

Scan301 Instructions and results for a high-rate discharge test on battery cells through a constant external resistance.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 II 19 To E.T.G. Order No. TC126 Customer's No. On High Rate Discharge through a constant external resistance of .100w.…

Scan302 Instruction sheet detailing the failure analysis of a P&R battery cell.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: C.E.B. Order No. SC129 Customer's No. X4617S Re Failure of P&R cell in S4 Battery (15) One P&R cell has failed in this…

Scan303 Electrical experimental record sheet for a P&R & Exide Sandwich battery.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No: - 4617 . P&R & Exide Sandwich battery SU (157) + P Exide box. Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. |…

Scan304 Electrical experimental record sheet for a P & R & Cside Sandwich Battery.
View original record Page 2. ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No: - 4617 P & R & Cside Sandwich Battery sc(157) on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles…

Scan305 Investigation into the failure of a P&R battery cell due to the stretching of positive plates.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. To: G.F.G. Order No.: IC130. Customer's No.: X 4617S. Re Failure of P&R cell in SX Battery (159) One P&R cell has failed in this battery (cell no 4) after having run…

Scan306 Letter to Peto & Radford concerning P & R cell failures in sandwich batteries.
View original record Y46175 EFCl/T. 5th October, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, Further P & R. cell failures have occurred on our sandwich batteries, and attached please…

Scan307 The failure of a P & R cell in an S4 battery (157) during a bench life test.
View original record COPY. EFC. JC.129. 3.10.28. RE FAILURE OF P & R CELL IN S4 BATTERY (157) One P & R cell has failed in this battery after being on our bench life test for 22 months and run 31,000 miles on the road.…

Scan308 The failure of a P & R cell in an SX battery after 13,787 miles.
View original record COPY. EFC. JC.130. 3.10.28. RE FAILURE OF P & R CELL IN SX BATTERY (159) One P & R cell has failed in this battery (cell No.4) after having run 13,787 miles and been on our bench life test 9 months.…

Scan309 Letter from Peto & Radford concerning modifications to future Sandwich batteries based on recent tests.
View original record G.J. X46175 Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 5 LINES PRIVATE BRANCH EXCHANGE. TELEGRAMS CONCENTRATION, SOWEST, LONDON. Manufacturers of P&R Accumulators Established 1889. PETO &…

Scan310 Letter to Messrs. Peto & Radford regarding reporting failures of Sandwich Batteries.
View original record X4675 EFC3/T. 10th October, 1928. Messrs. Peto & Radford, 50, Grosvenor Gardens, London, S.W.1. Dear Sirs, Re Sandwich Batteries. We thank you for your letter M/5. of the 9th inst. It would now appear…

Scan311 Instruction sheet regarding the failure and replacement of a battery cell.
View original record RR 238 (150 BKS.) (DB 461-8-12-24) MP 306975 X4617S ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.T.C. 19-10-1928 Order No.: J.C.136. Customer's No.: X.4617S. Re. Failure of P&R cell in S1 Battery (154) No 2…

Scan312 Graph chart showing the results of an electrical test, likely a battery discharge curve, with handwritten calculations.
View original record Top Header: 25-10-28, 154, S1, 75 a.h., 103 lbs. Calculations: Average amperes = 6.25, Hours = 8.0, Ampere hours = 50.0 Bottom Annotations: .485, 1.80w Vertical Watermark: RECORDING CHART. TRADE MARK.…

Scan313 Test report on an S1 battery after extended bench testing and road use.
View original record RR 236 (150 BKS.) (DB 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.F.L. Order No. JC.139. Customer's No. X 4617 S Re Tests on S1 Battery (154) This battery has been on our bench b/f…

Scan314 Instructions regarding the failure of a P&R battery cell due to sediment accumulation.
View original record RR 23B (150 BKS.) (DD 431-8 12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. X4617S To: E.J.B. Order No.: JC142 Customer's No.: X 4617 S. 12-11-28 Re Failure of P&R in 3X Battery (159) A P&R cell (no4)…

Scan315 Instruction sheet detailing the failure of a P&R S2 battery cell after a bench life test.
View original record RR 238 (150 BKS.) (DB 431-8 12 24) MP 306975 X46178 ROLLS-ROYCE LTD. INSTRUCTIONS. To: C.J.C. Order No.: I.C. 141. Customer's No.: X46178 Re Failure of P&R S2 Battery. (155). No 1 cell (P&R) has…

Scan316 Letter to a supplier discussing battery cell failures and test results.
View original record X46175 EPC7/T. 1st January, 1929. The Chloride Elec. Co.Ltd., Clifton Junction, Nr. Manchester. X46622 Dear Sirs, Re Special Exide Battery with alternate cells with triangular grid bars with their…

Scan317 Letter to The C.E.S. Co. about the performance of Exide type 40/50 batteries in tests and on customer cars.
View original record The C.E.S. Co. ------------ -2- Contd. In the meanwhile you will be interested to know that further to ours EFC2/T. of August 8th last, it is still the case that no actual failures of any of the Exide…

Scan318 Experimental record chart for a PaR & Goude Sandwich Battery, detailing dates, locations, tests, and mileage.
View original record ELECTRICAL EXPERIMENTAL RECORD CHARTS. X4617S X. No:- 4617 PaR & Goude Sandwich Battery S2 (155) E+ Guide box. | Date on. | Location. | Date off | REMARKS. | Miles Reading Start. | Miles Reading…

Scan319 Electrical experimental record sheet for a Sandwich Battery S2 (155) E+ Exide box.
View original record II ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617S Sandwich Battery S2 (155) E+ Exide box Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles…

Scan320 Electrical experimental record sheet tracking the testing and usage of a Sandwich Battery.
View original record III ELECTRICAL EXPERIMENTAL RECORD SHEETS X.&No: - 46175 Sandwich Battery S2/155) E+ Page 3. Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered.…

Scan321 Failed battery cell on car 10-EX and a request to access the battery box.
View original record X46175 To RHC. from EFC. EFC1/T10.1.29. BATTERY ON 10-EX. A cell has failed in this battery and we wish to change it. We should be pleased if you could arrange to have the battery box let down so as…

Scan322 Letter to Peto & Radford regarding failures of P & R. cells in sandwich batteries, referencing attached reports.
View original record V4617S EFC2/T. 17th January, 1929. Messrs. Peto & Radford, 50, Grosvenor Gardens, LONDON, S.W.1. Dear Sirs, Further to our EFC1/T of Oct. 5th last, we now quote for your information two further…

Scan323 The failure of two P & R battery cells, detailing mileage, age, and condition upon dismantling.
View original record EFC. JC.148. 16.1.29 FAILURE OF CELL IN S1 BATTERY (154) A P & R cell has failed in this battery after having run 18,840 miles and has been on our bench life test 21 months. The age of this cell is 3…

Scan324 Letter from accumulator manufacturers Peto & Radford acknowledging receipt of a letter with reports.
View original record X46178. 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…

Scan325 Letter to Messrs. Peto & Radford concerning the cracking and leakage of Dagenite battery cells.
View original record X46175 26th. Feb. 1929. EFC1/LG. Messrs. Peto & Radford, 50, Grosvenor Gardens, S.W.1. Dear Sirs, RE. CRACKING OF DAGENITE CELLS. With further reference to the 'sandwich' batteries which we have been…

Scan326 Letter from accumulator manufacturer Peto & Radford regarding cracked Dagenite cells.
View original record X46175 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…

Scan327 Instruction sheet detailing the cause of a P&R battery cell failure after extensive road and bench testing.
View original record ROLLS-ROYCE LTD. INSTRUCTIONS. To: E.T.C. Order No. IC.156. Customer's No. X4617S. Re Failure of P&R cell from S1 Battery This cell has covered 9012 miles on the road & has been on our bench life test…

Scan328 Instruction sheet detailing an inspection and condition of positive plates.
View original record RR 238 (150 BKS.) IDB 461-8-12 24) MP 306975 ROLLS-ROYCE LTD. INSTRUCTIONS. II To 19 Order No. IC.156 Customer's No. The positive plates were very weak but had held the paste very well & the periphery…

Scan329 Graphical chart recording the performance test of a Sandwich Battery.
View original record 7 SY 8 27-11-25 Sandwich Battery SY (170) goal 100 a.h. Average amperes = 6.39 Hours = 9.25 Ampere hours = 59.0 .590 1.800 REG. TRADE MARK "MEGGER"

Scan330 Graph chart displaying test results with handwritten annotations.
View original record SY 1-6-26 170 SY 103 lbs 75 e.h. Average amperes = 6.26 Hours = 9.25 Ampere hours = 58.0 564 1.80w REGD TRADE MARK T M & G CERT

Scan331 Chart recording the results of an electrical test, likely a battery discharge, over an 8-hour period.
View original record Handwritten Text: SY 17-3-27 170 SY 75 a.h. 103 lbs Average amperes = 6.51 Hours = 8.0 Ampere hours = 52.0 .505 1.80w Printed Text: Top axis: 5, 6, 7, 8, 9, 10, 11, 12, 1 Vertical axis: 0, 1, 2, 3, 4,…

Scan332 Battery discharge test chart showing average amperes, hours, and total ampere-hours.
View original record END OF CHART APPROACH X4617S 7-1-26 171 SZ 75ah. 101 lbs. Average amperes = 6.15 Hours = 5.9 Ampere hours = 36.3 .360 1.80w REGD TRADE MARK 'MEGGER'

Scan333 Chart recording of an electrical test, showing amperage over time with calculated values.
View original record 7 8 9 10 11 12 5-3-28 171 SZ 103LBS 75 AH Average Amperes = 6.15 Hours = 4.5 Ampere hours = 27.6 .268 281-180w 5 4 3 2 1 0

Scan334 Chart recording of a battery discharge test comparing P&R and Exide cells.
View original record 7 S4 8 30-6-25 157 S4 Battery 102 lbs 80 a.h. The voltage of the P&R cells were much lower than the Exide cells whilst standing discharged. REGd. TRADE MARK "MEGGER" Average amperes = 6.5 Hours -…

Scan335 Battery discharge test graph comparing P&R cells with Exide cells.
View original record 7 S4 8 7-7-25 157 S4 Battery 102 Cells. 80 A.h. The voltage of the P&R cells were much lower than the Exide cells whilst standing discharged. Average amperes: 6.46 Hours = 9.58 Ampere hours = 61.8…

Scan336 Chart recording from a Megger instrument showing the results of an electrical test.
View original record S4 7 6 7 8 9 10 11 12 1 2 3 5 4 3 2 17-11-26 157 S4. 75 a.h. 100 lbs Average amperes = 6.07 Hours = 9.0 Ampere hours = 54.6 .546 1.80w REG'D TRADE MARK 'MEGGER'

Scan337 Performance graph with handwritten test result calculations.
View original record 20-9-27 157 S.A. 75 a.h. 100 lbs Average amperes = 6.22 Hours = 8.75 Ampere hours = 54.4 .544 1.80w. EVERETT EDGCUMBE LONDON

Scan338 The failure of a P&R cell in an SX battery after testing.
View original record X46175. E.Y.C. J.D.8. 20-6-29 X46175 Re Failure of P&R cell in SX Battery (159) No 1 cell has failed in SX battery after having ran 13,787 miles & been on our bench life test 16 months. The negative…

Scan339 The life and performance tests of an SX Battery (159).
View original record X46175. E.Y.C. J.D.14. 11-7-29 X46175. Re Tests on SX Battery (159) This battery has now run 13,787 miles & has been on our bench life test 13 months. On Low Rate Discharge through a constant external…

Scan340 Battery cell's mileage and bench life test duration.
View original record 2 K JD14. bars facing inwards. No 4 cell was originally in S4 Battery & has ran 31,051 miles & has been on our bench life test 29 months. g.f.

Scan341 Low and high rate discharge tests and life tests performed on SU and SV batteries.
View original record L.F.G. J.D.18. X4617S. 22-7-29 X4617S. Re Tests on SU & SV Batteries (178-7). On Low Rate Discharge through a constant external resistance of 1.80w these batteries gave 34.8 ampere hours. All cells…

Scan342 Chart recording an electrical test measuring amperes over time.
View original record 19-7-29 176-7 SU SV. 103lbs 75 a.h. Average amperes .6.32 Hours .5.5 Amperes hours .34.8. .338. 1.80w 5 6 7 8 9 10 11 0 1 2 3 4 5

Scan343 Electrical experimental record sheet for a 12V Reboudé Sandwirl battery.
View original record X46175 1. ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 46175 12V Reboudé Sandwirl battery S3 (156) + E 12V R Box. Date on | Location | Date off | REMARKS. | Miles reading Start | Miles reading…

Scan344 Electrical experimental record sheet for a P & R & Exide Sandwich Battery test.
View original record Page 2. ELECTRICAL EXPERIMENTAL RECORD SHEETS X. &No:- 4617 S P&R & Exide Sandwich Battery S3 (156) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles…

Scan345 Log sheet tracking the usage and failure of a P&R+Exide Sandwich Battery.
View original record 3. ELECTRICAL TROUBLE SHEETS XMO 46175 P&R+Exide Sandwich Battery S3 (156) Date on. | Location. | Date off. | REMARKS. | Miles reading start. | Miles reading finish. | Miles covered | Total miles.…

Scan346 Failure analysis report on an Exide battery cell after a bench life test.
View original record E.F.B. J.D.21. X46175. 13-8-29 X46175. (154) Re Failure of Exide cell in S1 Batt No 6 cell has failed in this battery after having been on our Bench Life test 29 months, & ran 13,336 miles. Failure…

Scan347 The failure analysis of a P&R battery cell following extensive road and bench testing.
View original record E.F.G. X4617S JD27. X4617S. Re Failure of P&R cell in 53 Battery (156) No 3 cell has failed in this battery after having run 27,117 miles on the road, & has been on our bench life test 22 months. On…

Scan348 Electrical experimental record sheet for a P+R+ Exide Sandwich Battery and P+R Box.
View original record X46178 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:-4617 P+R+ Exide Sandwich Battery S1 (154) + P+R Box Date on. | Location | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. |…

Scan349 Electrical experiment record sheet for a P&R & C Exide Sandwich Battery S1(154), page 2.
View original record ELECTRICAL EXPERIMENT RECORD SHEETS. X. No: -4617 P&R & C Exide Sandwich Battery S1(154) Page 2. Date on | Location | Date off | REMARKS | Miles reading start. | Miles reading finish. | Miles covered.…

Scan350 Electrical experimental record sheet for battery S1 (154), page 3.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X No 4617 S S1/Battery (154) Page 3. Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered. | Total miles.…

Scan351 The failure analysis of cell No. 4 in an SX Exide battery after a life test.
View original record E.J.C. J.D.60 X.46175. 28-2-30. X46175 Failure of cell in SX Battery (Exide) No 4 cell has failed in the above battery & was originally in S4 battery. It has now ran 31,051 miles & has been on our…

Scan352 The failure of slotted ebonite separators and a proposed superior circular hole perforated design.
View original record 2 J.D.60. type. The slots had been opened by pressure of the positive grid bars these being arched & distorted. Mr McKinnon saw this cell & he suggested the ebonite separators should have a frame all…

Scan353 Electrical experimental record sheet for an S.V. Battery (177) detailing tests and outcomes from 1926 to 1930.
View original record X46175 ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617 S.V. Battery (177) Date on. | Location. | Date off. | REMARKS. | Miles Reading Start. | Miles Reading Finish. | Miles covered. | Total Miles.…

Scan354 Electrical experimental record sheet for an SU Battery (176), page 2.
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. XNO 46175 SU Battery (176) Page 2 Date on. | Location. | Date off. | REMARKS. | Miles reading Start. | Miles reading Finish. | Miles covered | Total miles.…

Scan355 Experimental record sheet detailing the testing and usage of an SV Battery (176).
View original record ELECTRICAL EXPERIMENTAL RECORD SHEETS. X. No:- 4617 S SV Battery (176) Date on. | Location. | Date off. | REMARKS. | Miles reading Start | Miles reading Finish | Miles covered | Total Miles --- | ---…

Scan356 Failure of a P&R cell in an SV Battery during a bench life test.
View original record X4617S E.T.L. J.D.66. 27-3-30 X4617S Failure of P&R cell in SV Battery No 2 cell has failed in this battery. It has never been on the road & has spent the whole of its life (4 yrs) on our bench life…

Scan357 The failure of a cell in an SV battery, detailing its service history and the condition of its components.
View original record X. 46175 E.J.C. J.D. 74. 15-4-30 X4617S. Failure of cell in SV Battery (177). No. 3 cell on Exide has failed in this battery whilst working as a spare cell. It was originally in 84 battery &…

Scan358 Note on a failure caused by stretching positive plates and shorting on negative straps.
View original record 2 J.D.74. Failure was due to the old complaint, that of the stretching of the positive plates & shorting on the negative straps.

Scan359 Test results for an SX Battery (157), detailing bench life, low-rate, and high-rate discharge performance.
View original record E.L.B. J.D.75. X.46175 24-4-30 X46175 Tests on SX Battery (157) This battery has been on our bench life test for 26 months & has run 13,787 miles. On Low Rate Discharge 35.3 ampere hours were…

Scan360 Failure report on an SX Battery where the positive terminal post has pulled out.
View original record E.J.C. J.D.76. X 46175 29-4-30. X46175. SX Battery, (159) The positive brass terminal post of no 6 cell (Std. Exide) has pulled out. The lead has not effectively entered the holes in the post which…

Scan361 The condition of cell components after a 26-month bench life test.
View original record II J.D.76. but the periphery of a few plates were broken. The plates had grown a fair amount, but not sufficient to cause a short. There was no buckling of the plates. The wood & ebonite separators…

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