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).
Blueprint for a tool used to fit valve springs, also showing a tool for pushing a locking ring into position.
| Identifier | ExFiles\Box 131\4\ scan0278 | |
| Date | 8th June 1937 guessed | |
| TOOL FOR FITTING VALVE SPRINGS. 3 1/2 6" 3/8 5/8" 2 3/4 CYLINDER HEAD 1 1/2" 5/8 A 3 3/8" 7/8 DIA QUICK THREAD APPROX 4 THREADS PER INCH. 7" 5/8 SQUARE TOOL FOR PUSHING LOCKING RING INTO POSN SECTION FOR LOCATING VALVE SPRINGS. 5/8" A | ||