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).
With sketches discussing design options for a piston assembly in hydraulic shock dampers.
| Identifier | ExFiles\Box 56\1\ Scan108 | |
| Date | 4th April 1931 | |
| DA {Bernard Day - Chassis Design} /HDY {William Hardy} } FROM R. {Sir Henry Royce} HS {Lord Ernest Hives - Chair} /RM. {William Robotham - Chief Engineer} } (At Le CanadelHenry Royce's French residence.) Y 235. R1/M14.4.31. C. to - SG. {Arthur F. Sidgreaves - MD} WOR. {Arthur Wormald - General Works Manager} C. to - E. {Mr Elliott - Chief Engineer} BY. {R.W. Bailey - Chief Engineer} HYDRAULIC SHOCK DAMPERS. My work on these gets crowded out. I am arranging that the piston should be held together with long screws with cheese heads for the spring, thus : [Diagram 1] Labels: Spring washer Lock nut. Tapped in Conical. Or perhaps piston 1/4 dia here. fairly close fit. Spring space [Diagram 2] Labels: 1 B.A. all the way. Plain parallel screw would do if we could rely on it stopping the right distance or - [Diagram 3] Labels: 1/4 1 or 2 B.A. They are all secured by the same kind of check nut and spring washer. Naturally the parallel one is cheap and quite good except for stopping correctly. The bore for the head might be larger than for spring so that when screwed as far as possible the end would not be too far through the nut. R. {Sir Henry Royce} | ||