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 concerning the bulging of a 20 HP battery case.
| Identifier | ExFiles\Box 54\1\ Scan130 | |
| Date | 20th October 1926 | |
| 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. {Mr Friese} C. GRAHAM MENZIES O. {Mr Oldham} R. {Sir Henry Royce} N. MINCHIN WILLIAM PETO C. R. {Sir Henry Royce} D. {John DeLooze - Company Secretary} PRITCHETT T. W. PRITCHETT YOUR REF. OUR REF. M {Mr Moon / Mr Moore} /5 20th October 1926. Messrs. Rolls Royce Ltd., DERBY. For the attention of Mr. Fowler Clark. Dear Sirs, In reply to yours of the 18th inst., we are interested to hear that the 20 H.P. battery in the six compartment moulded cell case, having both ebonite and wood separation throughout, is still in good working order. This must have done rather well. With regard to the box bulging, probably the battery is getting fairly old and the plates are starting to swell, as is the case with all batteries in their last stages. It is very difficult to prevent this happening, the only way it can be done is to allow a great deal of space for acid and separation in the cell and to have the sections a very easy fit, but with the very restricted dimensions you have got for your batteries this is not possible in your case. You will probably notice that wood case batteries bulge to a certain extent, though in the case of your 40/50 type you have done something to stop this with the steel spokes and this offers a greater resistance than any moulded box can do. In the box under consideration the arrangement of the cells is not so good for resisting bulging as with the ordinary lay out, because the long side of the cell (where the swelling occurs) is on the out side unsupported side of the box. Most of these moulded boxes swell a little in use but a great majority Handwritten notes: X4617P X4600 X.4414P | ||