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 P&R Accumulators discussing ebonite separator samples and comparing them to an Exide equivalent.
| Identifier | ExFiles\Box 54\5\ Scan012 | |
| Date | 4th May 1925 | |
| X 4655 D Works, Dagenham Dock, Essex TELEPHONE VICTORIA 3667. 4-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 C. GRAHAM MENZIES R. {Sir Henry Royce} N. MINCHIN WILLIAM PETO C.R.D. PRITCHETT T.W. PRITCHETT. YOUR REF _________ OUR REF M {Mr Moon / Mr Moore} /5. 4th May 1925. Messrs. Rolls Royce Ltd., DERBY. Dear Sirs, We thank you for yours of the 2nd inst., EFC {E. Fowler Clarke - Electrical Engineer} 1/T, and for enclosing the samples of the ebonite separators. We are inclined to agree with you that '6 m {Mr Moon / Mr Moore} /m will probably be all right and that the test which these samples represent was very strenuous and that a fairer condition of the separators will be found in the battery that we are to open which has been actually in use on a car. After examining that we can probably give a definite opinion. The Exide separator is very interesting and appears to be very nicely made. Whether or not it has a bigger percentage opening we cannot say but we do not think that that is the point which concerns us so much as there seems to be a large margin of performance in high rate discharge with the present battery, and what is more important is the life of the separator and we are inclined to think that there would be less than the type we use because the small strips may be eaten through at the ends as there is very little to hold them, and then the whole piece would fall out. Yours faithfully, PETO & RADFORD, G.R.N. Minchin | ||