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 concerning battery filling issues and vent thread problems.
| Identifier | ExFiles\Box 70\3\ scan0052 | |
| Date | 18th October 1926 | |
| x87836. 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.I. DIRECTORS: SIR ARCHIBALD G.{Mr Griffiths - Chief Accountant / Mr Gnapp} GOLD F.C.GRAHAM MENZIES G.R.N. MINCHIN WILLIAM PETO C.R.D. PRITCHETT T.W. PRITCHETT, YOUR REF OUR REF M/5. 18th October 1926. Messrs. Rolls Royce Ltd., DERBY. For the attention of Mr. Fowler Clark. Dear Sirs, We have your letter of the 15th inst. which we have discussed with our Works and are sorry to hear the trouble that your customer has had. In doing what he did do he has disregarded the instructions and any battery of whatever make if filled up to a point where the bottom of the vent barrel is submerged will syphon out the electrolyte and make a hopeless mess all over the battery and will be aggravated the moment the charging current is put on. To enable the battery to be filled a bit higher, we are sinking the barrel of the vent more into the main body which gives another 3/8" clearance above the electrolyte. We have not yet got any in porcelain but we enclose herewith one made in Dagenite, which will show you what we mean. With regard to the vents being very slack in the threads and almost stripped, you will notice that the thread is exceedingly coarse and the making of a manufacturing error would have to be enormous for the vent to be capable of pulling out of the thread and we have had no case at all of this except where there has been some sort of explosion or very great pressure, which very likely has happened in this case, splitting the lid{A. J. Lidsey} and opening the threads. We are manufacturing and supplying upwards of a quarter of a million of these lids per annum. They are a very great improvement on the old type and we must have supplied some thousands | ||