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).
Design options for a lighting battery ignition system for a marine engine.
| Identifier | ExFiles\Box 61\2\ scan0063 | |
| Date | 23th January 1913 | |
| R.R. 935A (1000) (PP351. 2.1.13) G 4088 COPY. X.3374 January 23rd., 1913. X.3374 X 562 Lighting Battery Ignition. 1. Dynamo is intended to be combined and driven with fan (see ample room in 4" engine (marine) ). 2. Can lighting be done with equal success with 4 volts - I think not. 3. Let Ellis try a coil with fine primary wire and small well-annulated condenser; Twice no. 8 times. 1/4 sectional area. 1/4 no. of plates on condenser. suitable for 8 volts. 4. Try to purchase a coil for 8 volts. X245 5. Failing 3 & 4 use my idea of ratchet switch and 3 wires instead of two from battery, every time the cells are switched on for charging the ignition is changed to the other pair of cells or modification of this may be possible and my other extra wire needed from cells. F.H.R. (the latter portion of this memo, i.e. the last line and a half is very difficult to read). H.B. [Watermark text: JOHN BOND 1804 MADE AT CROXLEY] | ||