Hand-drawn diagram of a toggle hand brake mechanism.
| Identifier | ExFiles\Box 1\4\ B001_X 100a-page075 | |
| Date | 26th November 1932 guessed | |
| TOGGLE HAND BRAKE Collapsed | ||
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).