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).
Confirming an urgent request for differentially coiled valve springs made from carbon wire.
| Identifier | ExFiles\Box 158\4\ scan0118 | |
| Date | 28th January 1937 | |
| 1360 By.{R.W. Bailey - Chief Engineer} from Rm.{William Robotham - Chief Engineer} Rm{William Robotham - Chief Engineer}19/R.28.1.37. VALVE SPRING. This is to confirm that we are urgently awaiting differentially coiled valve springs made in carbon wire at R.R. We shall be glad to know whether you can give us some date as to when you expect to be able to supply these. Rm.{William Robotham - Chief Engineer} | ||