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).
Requesting new keyways be slotted in two mushroom type rotors to suit a standard contact breaker.
| Identifier | ExFiles\Box 32\5\ Scan070 | |
| Date | 12th December 1927 | |
| x7600 X6096 To RHC.{R. H. Coverley - Production Engineer} from EFC. EFC2/T12.12.27. Will you please have new keyways slotted in the two mushroom type rotors handed to you herewith, to suit the standard contact breaker. These were originally cut for use with off-set levers. Also please fit rotor fingers to complete. EFC. | ||