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).
Manufacture of a water-excluding bronze diaphragm for a Servo gearbox, suggesting a two-part, dip-soldered construction.
| Identifier | ExFiles\Box 152\2\ scan0265 | |
| Date | 4th November 1940 | |
| 1294 To Rm{William Robotham - Chief Engineer}/Rigby. from Ev.{Ivan Evernden - coachwork} c. to Rm.{William Robotham - Chief Engineer} c. to Ev{Ivan Evernden - coachwork}/Tln. Servo Ev.{Ivan Evernden - coachwork}5 JH.4.11.40. re Water Exclusion from Servo. We thank you for your visit with the samples of the improved water seal. We confirm that before we alter the designs of the Servo for the Senior or Junior Gearbox, you will give us dimensions of the deeper corrugationson the bronze diaphragm. Also you will go into the question of the manufacture of this diaphragm as a spinning, and as a pressing. Should difficulty be experienced in producing this corrugation, we suggest that you investigate the manufacture and test a diaphragm made in two portions by pressing for preference and dip soldered together thus :- Dip SOLDER Rm{William Robotham - Chief Engineer} Ev.{Ivan Evernden - coachwork} | ||