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).
Extract discussing the high capacity and space efficiency of U.S.A. Bosch battery ignition condensers.
| Identifier | ExFiles\Box 61b\4\ scan0069 | |
| Date | 27th September 1921 | |
| R.R. 235a (100 T) (S.H. 798. 16-12-20) G 2947 X.4275. Extract from EFC2/T27.9.21. X.2512- CONDENSERS FOR BATTERY IGNITION. X.4275. The U.S.A. Bosch battery ignition condensers already reported in our EFC2/T5.9.21 which had a capacity of .5 mf. seems to have a remarkably high capacity per cu.in. We have not got one of these condensers out of its box, but we estimate the effective volume to be 1 cu.in. so that the capacity per unit volume is .5 mf. or equal to our ideal value for the mica condenser. It is very doubtful if we should be able to obtain ourselves anything like this space efficiency without considerable experience in making paper condensers. [Watermark: DICKINSON BOND] | ||