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).
Discussion about the forming process of battery plates and failures experienced with standard cells.
| Identifier | WestWitteringFiles\E\September1920\ Scan35 | |
| Date | 6th September 1920 | |
| Contd. -3- EFC2/T6.9.20. Planté manner, but we were told that all the forming processes were carried out without reversal, this being possible on account of using some special mixture of other solution in the electrolyte. The grids for the negative plates of the "Chloride" cells are cast with lead under pressure, but the grids for the "Exide" cells are cast in gas-heated metal moulds with a gravity head only. We had a fair amount of discussion with Mr. McKinnon regarding the failures we have recently experienced on the standard cells, and as to by what means these could be overcome. It seemed to us, as already stated, that these could largely be prevented by making a more robust plate at the expense of course of some increase in weight, and, with the present dimensions, some slight reduction in capacity. The cases of failure we have had have been referred to by Mr. Hives in his Hs{Lord Ernest Hives - Chair}1/LG2.9.20. We can only call to mind one case of a failure of internal connection, but we have had a number of cases of the wood separators failing by the plates squeezing their way through the wood, and not in every case, as it might at first sight appear, being due to the separators not being sufficiently large to extend beyond the plates. In their XC type of cell similar to those being supplied for "Ford" cars at present, they had made modifications to overcome these defects and they have designs by which these modifications would be incorporated as soon as possible in further batteries they supply to us. One of these modifications N'B' 5397 (100 L) (2'C' G'B' 18-3-20) C 5812 Contd. | ||