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).
Request to build a test Foot Switch with a stronger spring and new toggle arm to achieve a better snap action.
| Identifier | ExFiles\Box 168a\2\ img217 | |
| Date | 8th April 1936 | |
| PHO. c. Hs{Lord Ernest Hives - Chair}/Wst. WST BY/RDL/W.8.4.36. 86133. ALL CHASSIS. R.R.Foot Switch, R.R.Sch.920. In order to obtain a better snap action, would you please have one Foot Switch to L.O.P. DB.{Donald Bastow - Suspensions}1121, built up with the following new parts incorporated :- DB.{Donald Bastow - Suspensions}1208. Toggle Arm. 2 off. DB.{Donald Bastow - Suspensions}1209. Spring for Toggle Arm. 1 off. It has been found on production that some of the toggle springs are a little bit doubtful in their action, and we should like to know the result of a stronger spring. Blue prints of these parts, together with a print of R.R.Scheme 920 are attached hereto. BY/RDL | ||