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).
Split piston design, its advantages, and arrangements for patenting related schemes.
| Identifier | ExFiles\Box 41\4\ Scan002 | |
| Date | 17th October 1919 | |
| contd. -2- R2/G17.10.19. pushed on to a final trial of the simplest form that will function correctly. When you were last here, I regret that owing to Mr. Nadin's anxiety to get to London we could not delay him with our problems therefore, the split piston as arranged by Mr. Hives was not discussed, and I had not then received his very favourable report. I was not much in favour of the split pistons for obvious reasons, such as life, and in Mr. Hives' case it appears to cut off heat conductivity and aluminium is such poor stuff to trust to for elasticity. I think, however, this scheme is better than most split pistons, as it embodies the rigid side for the power stroke, as suggested by me, and provides a very simple means of providing the flexible pads and permitting the collapse of the piston in the case of it being under certain conditions too tight. Undoubtedly we ought to patent the various schemes here pointed out, and I will get Mr. Elliott to send some sketches with this letter so that Mr. Claremont Haynes can proceed in the matter. R.{Sir Henry Royce} Arrange for one patent for Mr. Hives and the company. Also one for the pad operated by steel spring, oil ram separately or together with intermittent opening, or back pressure valve. Any combination of these in name of F.H.R and company. R.{Sir Henry Royce} see original for sketches. | ||