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 Chloride Electrical Storage Co. Ltd. discussing the composition of Tungstone accumulator grids and plates.
| Identifier | ExFiles\Box 35\4\ scan 193 | |
| Date | 20th September 1926 | |
| X3830 ALL COMMUNICATIONS TO BE ADDRESSED TO THE COMPANY THE Chloride ELECTRICAL STORAGE COMPANY LIMITED. LONDON OFFICE, 137, VICTORIA STREET, S.W.1. CLIFTON JUNCTION. NR MANCHESTER. TELEPHONES - PENDLETON 481 (3 LINES) TELEGRAMS - CHLORIDIC, PENDLEBURY. CODES:- BENTLEYS, LIEBERS, A1 AND A.B.C. (4TH & 5TH EDITIONS.) OUR REFERENCE ECM/EH. 20th September 1926. E.Fowler Clark, Esq., Messrs.Rolls-Royce Ltd., Derby. Dear Mr.Clark, Tungstone Accumulator. I am in receipt of your letter reference EFC1/T of the 18th instant. The first page of your letter entirely meets the point when you say you have understood that the outer window frame grids are made of antimonial lead, and that the lattice work grids are made of pure lead. I think the Tungstone Battery Company definitely distinguish between the lattice work grid and the outer frame. You have cited two batteries using pure paste, hence the query what is it that other accumulator makers do which the Tungstone Company does not, or vice versa. As I mentioned in my last letter, our test of Tungstone plate grids (and frames) shews that they are antimonial lead. As you apparently have some of their positive plates, by paring the grid you will see for yourself whether the metal is pure lead or an alloy. I have carried out various tests on Tungstone cells personally which confirm your own results. Yours very truly, E C Mekinnon [Sticker] Exide Week Sept 20th - 25th Order your supplies from us now | ||