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).
Patent application for a protuberance on a piston.
| Identifier | ExFiles\Box 147\2\ scan0143 | |
| Date | 15th December 1939 | |
| To NW{N. Walker - Patents} - Patents Dept. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}5/JH.15.12.39. Protuberance on Piston. Appln. No.37227/38. With reference to your memo. NW.{N. Walker - Patents}3/VL.{V. Lewis / Mr Valentine}14.12.39. We agree that there is no reason why the ignition plug should not be shown in the position as denoted by Fig.3. in the specification. It would seem however taat in view of claim 3 (which covers the arrangement regardless of plug position) that we are still allowed to put the spark plug anywhere we like, which is useful to note for future development in this combustion chamber. Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation} | ||