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).
Diagram for a plate designed to hold a valve open, which is anchored to a rocker arm shaft.
| Identifier | ExFiles\Box 174\2\ img225 | |
| Date | 3rd November 1927 guessed | |
| PLATE TO PREVENT [illegible] HOLDING VALVE OPEN [illegible] ANCHORED TO EXSISTING ROCKER ARM SHAFT 1/8 FLAT STEEL STOCK | ||