Sketch of a spigot for an American Bosch battery ignition throttle governor casing on a 40/50 chassis.
| Identifier | WestWitteringFiles\G\June1921\ Scan43 | |
| 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 CPE 23/6/21 | ||
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).