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).
Letter to Hepworth & Grandage Ltd. regarding a synopsis on piston rings.
| Identifier | ExFiles\Box 148\3\ scan0390 | |
| Date | 12th September 1938 | |
| 1256 Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}6/MH.{M. Huckerby} Mr.G.Hepworth, Messrs.Hepworth & Grandage Ltd., St.John's Works, Bradford. Experimental Dept. 12th. September 1938. Dear Sir, We thank you for the synopsis on piston rings which contains some useful data. Actually, however, we find that a lot of the theories on rings etc. do not work out to plan in practice and results obtained are most contradictory. Yours faithfully, for ROLLS-ROYCE LTD. | ||