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).
Manufacturing of pistons using two perforated scraper rings and Mr. Hall's alloy.
| Identifier | ExFiles\Box 181\M11\ img168 | |
| Date | 3rd April 1919 | |
| To BY.{R.W. Bailey - Chief Engineer} from R.{Sir Henry Royce} PISTONS-CONTD. R3/G3/4/19. the oil working up to use two scraper rings with perforations, and the upper rings well away from the top of the piston. All this, I understand, has been arranged for, and is in order, and that we can go ahead and manufacture as fast as we like, preferably making the pistons by die castings in Mr. Hall's alloy. R.{Sir Henry Royce} | ||