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).
Exploded diagram of a valve spring, damper, cotters, and retaining plate assembly.
| Identifier | ExFiles\Box 126\1\ scan0078 | |
| Date | 24th January 1938 guessed | |
| Exs. 401. A SIMILAR DAMPER HAS BEEN DESIGNED FOR WRAITH III. SEE S.C.D. 230 EXS. 3/2 EXS. 3/3 VALVE SPRING DAMPER. VALVE SPRING, SPRING DAMPER COTTERS & SPRING RETAINING PLATE THE SAME FOR EXHAUST & INLET. | ||