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).
The sourcing and potential defects of push-pull switches.
| Identifier | ExFiles\Box 168a\1\ img067 | |
| Date | 15th January 1927 | |
| Rm{William Robotham - Chief Engineer}/Wst. at W. 6135 Hn.{F. C. Honeyman - Retail orders}4/MK.15.1.27. Push-Pull Switches. Your Ref: Rm{William Robotham - Chief Engineer}/Wst.18/AP.14.1.27. We buy push-pull switches for such things as wipers, fog lamps, auxiliary dash lamps etc. and supply them to the coach-builders for fitting when the body is built to our own order. The switches are made up by a firm known as the Motor Roof Lamp Co. to a specification supplied to us by E.{Mr Elliott - Chief Engineer}, and we cannot trace having previously had a complaint. It may be that the switches which have given trouble were not made for us by the Motor Roof Lamp Co. but were bought by the coach-builders concerned from other sources. Can you send us the defective switches, please, for identification? Hn.{F. C. Honeyman - Retail orders} ✓ | ||