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).
Mr. Royce's preferred method for a lock on the 20 HP chassis spare wheel bolt.
| Identifier | ExFiles\Box 103\5\ scan0044 | |
| Date | 4th September 1924 | |
| X.4085. To HS.{Lord Ernest Hives - Chair} from DA.{Bernard Day - Chassis Design} DA{Bernard Day - Chassis Design}2/M4.9.24. 20 HP. CHASSIS. LOCK OF SPARE WHEEL BOLT. X.4085. Referring to the standardisation sheet which has recently been sent round, I believe Mr. Royce is not sure that the method indicated is the best way to do this job. A way which he would favour would be using a special padlock through the existing hole in the end of the pin which was of a kind which would spring to shut, but not locked, for ordinary occasions, and then would enable you to lock it if you wanted to. The great majority of locks are of course made on this principle, but we do not know of any actual padlocks. Could you investigate whether there is such a thing? The idea is that a driver would not want to take out his key every time, or to be baulked by finding he had left it behind, but there would be some people who would want to lock their spare wheel. DA.{Bernard Day - Chassis Design} | ||