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).
Two annotated design proposals for a propeller shaft assembly, focusing on oil retention and structural integrity.
| Identifier | WestWitteringFiles\R\January1928-March1928\ 36 | |
| Date | 30th January 1928 guessed | |
| (2) Top Diagram: Pins should have maximum area. Gland or felt. Control lengthened by bearing surface here. Serrations that can be broached and hardened. Propeller. Oil retainer. I think this flange could be avoided by good taper press fit, & pinned with or without sweating. Oil grooves. The extra parts are caused by casehardening, broaching, oil retaining, & brazing. Below I shew a design which can be broached and casehardened, and is oil retaining without extra parts. If sleeve made larger it could be brazed if desired, providing brazing does not damage metal of either parts, but it could be tried, sweated, or tightly put together as shewn. The idea is 2 stiff tight rings joined by half flexibility, cross-pinned. Bottom Diagram: Split, bolted together, and sweat joint to ensure oil-tightness. Packing. Tin face and fit tinfoil liner so as to be self sweating when heated to melting point of solder. For Enots. Half the rigidity. Lubricating tube to near centre nut. Half the rigidity. Full rigidity of tube. 4 | ||