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).
Schematic diagram showing the motion of levers when the brake pedal is depressed.
| Identifier | ExFiles\Box 73\1\ scan0183 | |
| Date | 19th June 1924 guessed | |
| Solid Shaft to Replace Dogs. Stationary irection of motion of levers when brake pedal is depressed indicated by arrows. J.H.Harvey | ||