Design of the aiming handle for the 40mm Naval Gun type BD.
| Identifier | ExFiles\Box 175\3\ img068 | |
| Date | 10th August 1940 | |
| SECRET. To Rm. {William Robotham - Chief Engineer} cr {Mr Cra’ster / Mr Chichester} to Ve. cr {Mr Cra’ster / Mr Chichester} to Rm {William Robotham - Chief Engineer} /FJH. {Fred J. Hardy - Chief Dev. Engineer} cr {Mr Cra’ster / Mr Chichester} to Rm {William Robotham - Chief Engineer} /HH. cr {Mr Cra’ster / Mr Chichester} to Rm {William Robotham - Chief Engineer} /CTS. {C. Trot Salt - Carburation} (For Blk). re 40 m.m. Naval Gun type BD. {Mr Berend} On WPL.119 (original attached to Rm {William Robotham - Chief Engineer} /HH's.copy of this memo.) we shew the fixing for the aiming handle. We have retained the same diameter tube as on the experimental gun, as if we use the 1 1/4 diameter tube as on the firing handle, the boss on the cradle becomes so big in diameter that it interferes with the spot facing of the bolt bosses. Should a fatter handle be required we suggest that we should attempt to find a proprietary cycle or motor cycle handle grip. We see no justification in making a special rubber handle for this job at the moment. We should be glad if Rm {William Robotham - Chief Engineer} /FJH. {Fred J. Hardy - Chief Dev. Engineer} could locate for us a suitable handle grip when we will detail the tube to suit. Ev. {Ivan Evernden - coachwork} Original to Rm {William Robotham - Chief Engineer} /HH. Print 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. | ||
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).