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).
Cross-sectional diagram of a cam-operated lever and piston assembly.
| Identifier | ExFiles\Box 152\1\ scan0377 | |
| Date | 5th February 1937 guessed | |
| CAM. TO OPERATE ONLY WHEN., LEVER IS GOING DOWN FROM, NORMAL POSITION., 11/64" DIA, .005 CLEARANCE., .020 CLEARANCE ON DIA, PRESSURE IN THIS DIRECTION., WHEN ARM IS COMING UP, FROM BOTTOM RE COMPRESSION, STROKE., 3 31/32, ARMSTRONG, ARMSTRONGS PATENTS Co. LTD BEVERLEY | ||