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).
Drawing LeC.4113 for a weight-reduced inlet and exhaust valve for Spectre Valves.
| Identifier | ExFiles\Box 96\2\ scan0013 | |
| Date | 24th September 1934 | |
| LR.{Mr Ellor} SMITH 4694 354 To BY.{R.W. Bailey - Chief Engineer} from E/JNR.{Charles L. Jenner} E/JNR.{Charles L. Jenner}3/HP.24.9.34. c. Hs{Lord Ernest Hives - Chair}/Rm.{William Robotham - Chief Engineer} RHC.{R. H. Coverley - Production Engineer} re SpectreCodename for Phantom III Valves. We send you herewith drawing:- LeC.4113 showing the inlet and exhaust valve reduced in weight. These should be ordered up experimentally as required. E/JNR.{Charles L. Jenner} | ||