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).
Instruction for an experiment on a 20 HP chassis switchbox to reduce the burning of contact points.
| Identifier | ExFiles\Box 56\4\ Scan133 | |
| Date | 21th December 1927 | |
| X5730 To RHC.{R. H. Coverley - Production Engineer} from EFC. EFC2/T21.12.27. 20 HP. CHASSIS SWITCHBOX WITH SPECIAL CONTACT MAKERS TO D.51622. Referring to the instruction BY/RD4/ML7.12.27, This is an experiment on the reduction of the burning of the switch contact points, and when you have made up such a switchbox, would you please have this handed to us for test in our laboratory previous to our giving you an instruction for it to be put on one of the cars. EFC. | ||