From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Letter from Peto & Radford suggesting amendments to a battery instructions pamphlet.
| Identifier | ExFiles\Box 139\3\ scan0207 | |
| Date | 14th November 1938 | |
| TELEPHONE | RAINHAM 34. TELEGRAMS | (ESSEX) LONDON OFFICE. 50 GROSVENOR GARDENS, S.W.1 Manufacturers of Accumulators for over 50 years. PETO & RADFORD Proprietors - Pritchett & Gold and E.P.S. Company Ltd. WORKS DAGENHAM DOCK ESSEX. YOUR REF: Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}2/MH{M. Huckerby} OUR REF: ESC/MH{M. Huckerby} 14th November 1938. Messrs. Rolls Royce Limited, D E R B Y. Dear Sirs, Further to our letter of the 8th instant, we are now in a position to give you our comments on the proposed alterations to your Battery Instructions pamphlet. We can agree to the whole of the wording with the exception of the following:- 1. The paragraph which commences at the foot of Page 1 should read as follows:- "The level of the acid solution should be adjusted periodically by removing the vent plug in the centre of each cell lid{A. J. Lidsey} and adding distilled water to each cell until the level of the solution is approximately 3/8" above the tops of the separators. This process is known as topping-up." 2. On Page 3 we suggest that a figure of 70º F.{Mr Friese} should be given instead of 60º F.{Mr Friese} for the temperature of the sulphuric acid solution. 3. In the column headed "Fully charged specific gravity", we suggest that the figures should be altered as follows:- Temperate climates 1.270/1.285 instead of 1.280 Tropical " 1.200/1.215 " " 1.210 4. In the column headed "Fully discharged specific gravity" we suggest that the figures should be altered as follows:- Temperate climates 1.110(approx.) instead of 1.150 | ||