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).
Page 2 of a document describing a spring-loaded pinion engagement mechanism.
| Identifier | ExFiles\Box 56\4\ Scan086 | |
| Date | 24th June 1927 guessed | |
| -2- initially lightly engaged, then its engagement is supplemented by spring N4, and finally supplemented by the screw and nut effect of torque and thread. The end of the casing G1 is turned in at G2 and internally serrated to fit the pinion teeth. The pinion has an annular ring secured to it at one end which is pressed by a light spring M.{Mr Moon / Mr Moore} If the teeth fail to engage on axial movement, this spring is compressed, the pinion partially sliding into the casing G1, until sufficient torque is transmitted to it to cause it to snap into engagement. | ||