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).
Report suggesting improvements to battery design, comparing P & R and Exide types, specifically regarding plates and separators.
Identifier | ExFiles\Box 168b\3\ img024 | |
Date | 20th December 1929 guessed | |
-4- the better battery as far as appearances go, but the P & R has two advantages over the Exide in the type of grid and design of cell cover, which I think are distinctly better. There are two things with regard to the P & R which I think should make some improvement. (1) The positive plates would be, we think, better if thickened up a little bit, even if at the expense of the negatives. (2) The ebonite separators should be thickened up a little if only to .45 or .50 mm. They should also be larger and be of the same size as the wood so as to project over the plates to the same extent. At present they are on the small side and do not even come to the edge of the plates, and if any buckling occurred (which at present, I may say, is almost unknown) they would not prevent a short circuit because there would be only the wood to pinch through to make contact. I suggest these improvements provided they do not upset the characteristic of the cell such as charging resistance etc. and so worsen its general good performance. I also suggest that the Exide Co. make their plates a little less wide for the same reason that the P & R plates are better in this respect. EFC/GJ. | ||