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).
Sketch of a spigot for an American Bosch battery ignition on a 40/50 chassis throttle governor casing.
| Identifier | ExFiles\Box 61b\4\ scan0041 | |
| Date | 23th June 1921 | |
| SPIGOT FOR AMERICAN BOSCH BATTERY IGNITION ON 40/50 CHASSIS THROTTLE GOVERNOR CASING. i.e. increased length perhaps with bronze or steel surface obtained by pressing on piece of steel tube. R.{Sir Henry Royce} 23/6/21. SKETCH FOR MEMO R2 | G21621 CDE 23/6/21 | ||