Continued note on the main throttle valve, identifying it as a patentable feature for safety reasons.
| Identifier | ExFiles\Box 61b\4\ scan0088 | |
| Date | 20th September 1923 guessed | |
| contd:- -3- main throttle valve. We think this is a patentable feature as it is manifestly valuable for safety. R. {Sir Henry Royce} [Watermark: MADE AT CROXLEY] | ||
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).