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).
Replacement of a broken valve holder and a modified replenishing valve.
| Identifier | ExFiles\Box 109\4\ scan0181 | |
| Date | 4th August 1939 | |
| 666a. Rm{William Robotham - Chief Engineer}/IMW.{Ivan M. Waller - Head of Chateauroux} from Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} Rm{William Robotham - Chief Engineer}/AFM{Anthony F. Martindale}3/R.4.8.39. Herewith a new valve holder to replace the broken one. We enclose also a replenishing valve with the leak hole moved from the aluminium rivet to a groove across the seat. With the leak in this position the dirt does not affect the orifice. We imagine a good deal of your trouble is due to a change of leak rather than a change of valve load. Rm{William Robotham - Chief Engineer}/AFM.{Anthony F. Martindale} | ||