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).
Modifications to sight bracket positions for an Aluminium cradle on a BD type Naval Gun.
| Identifier | ExFiles\Box 175\3\ img098 | |
| Date | 22th August 1940 | |
| 3 To Ve/Robinson. cr{Mr Cra???ster / Mr Chichester} to Ve. o.{Mr Oldham} to Rm.{William Robotham - Chief Engineer} cr{Mr Cra???ster / Mr Chichester} to HPS.{Horace Percy Smith - Experimental Factory Mgr} cr{Mr Cra???ster / Mr Chichester} to Rm{William Robotham - Chief Engineer}/HH. Ev.{Ivan Evernden - coachwork}1/JH.22.8.40. re Aluminium cradle type BD.{Mr Berend} Naval Gun. Detail QB.1901. We have now settled the position for the sight brackets for the lst. 25 guns type BD.{Mr Berend} and show on the sketch herewith the position on the cradle for the bolt faces. We have telephoned this information to HPS.{Horace Percy Smith - Experimental Factory Mgr} this morning, so that he might immediately complete modifications to the patterns. In order to deal with any future slight variation to the distance between the sights we suggest that the general thickness of the cradle at the foresight boss should be made to insure a range of + or - .375. Although we have given the information verbally to HPS.{Horace Percy Smith - Experimental Factory Mgr} it will be necessary for you to modify detail QB.1901 as soon as possible and issue to him the alteration prints. We shall be sending you the sight bracket details in a day or so. Details of the actual sights will have to follow as soon as we have final instructions from the Admiralty authorities. Ev.{Ivan Evernden - coachwork} | ||