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).
Hand-drawn sketch with typed annotations of a pawl and ratchet mechanism.
| Identifier | WestWitteringFiles\J\April1923\ Scan15 | |
| Date | 30th April 1923 guessed | |
| I left the pawls to West WitteringHenry Royce's home town, But cannot help sending you this. 60° fairly exactly. About .3 or .4 About .1 or .125 3 pairs exactly diametrically oppo-site - i.e. 6 ratchets have teeth divisible by 2 but not by 6. Pin driven in pawl tightly, not to carry load but to prevent movement shewn. Scale about 5/4. .3 or .4 wide. | ||