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 accumulator manufacturer Peto & Radford proposing modifications to the design of battery grids and plates to reduce charging voltage.
| Identifier | ExFiles\Box 168b\3\ img286 | |
| Date | 3rd June 1930 | |
| X7536R 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 Proprietors - Pritchett & Gold and E.P.S. Company Ltd. 50 GROSVENOR GARDENS, LONDON, S.W.1. DIRECTORS: SIR ARCHIBALD C. GOLD F.C. GRAHAM MENZIES G.R.N. MINCHIN WILLIAM PETO C.R.D. PRITCHETT T.W. PRITCHETT YOUR REF. _______ OUR REF. M/S. 3rd June 1930. Messrs. Rolls Royce Ltd., DERBY. For the attention of Mr. Fowler Clark. Dear Sirs, We have been making some experiments in charging voltages and we think that we can reduce these somewhat by alterations in design and our idea is that it would be a good thing to do so. By modifying the design of the grid and the surface of lead exposed, we think we can make a slightly better plate and reduce the charging voltage on a 12-volt battery by about half a volt. Do you agree that it would be a good thing for us to get on with this? Yours faithfully, PETO & RADFORD. GR{George Ratcliffe} Minchin | ||