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).
Secret memorandum regarding a simplified elevating mounting for a 40 m.m. B.D. Gun.
| Identifier | ExFiles\Box 175\3\ img051 | |
| Date | 6th August 1940 | |
| SECRET. To Rm.{William Robotham - Chief Engineer} c. to Rm{William Robotham - Chief Engineer}/HH. c. to Ve. c. to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} c. to Blackstone. Ev.{Ivan Evernden - coachwork}9/JH.6.8.40. re Simplified Elevating Mounting 40 m.m. B.D. Gun. We have issued in a separate memo. Q.PL.106. which is a project for the simplified elevating mounting of the Oerlikon type. At the same time we have considered turning the large nut of the mounting by means of a horizontal capstan wheel instead of the bevel wheel and pinion. On Q.PL.109 (original to Rm{William Robotham - Chief Engineer}/HH's. copy) we illustrate the proposal with the gun team in action. If we ever go to a screw-jack mounting. we are inclined to favour this simple method of operation. No details are required of the scheme Q.PL.109 which is sent to you for issuing and filing. Ev.{Ivan Evernden - coachwork} Original to Rm{William Robotham - Chief Engineer}/HH. Prints to Rm{William Robotham - Chief Engineer}/FJH.{Fred J. Hardy - Chief Dev. Engineer} Ve. Rm{William Robotham - Chief Engineer}/HH. Ev.{Ivan Evernden - coachwork} & Blackstone. | ||