Proposed modification to the J.3. Gearbox to retain an interlock pin in the 1st and 2nd speed slider.
| Identifier | ExFiles\Box 123\3\ scan0104 | |
| Date | 18th January 1934 | |
| X4704 To BT. {Capt. J. S. Burt - Engineer} from HDY. {William Hardy} c. for. Mr. Hs. {Lord Ernest Hives - Chair} Ea. HHC HDY. {William Hardy} 1/HP.18.1.34. J.3. Gearbox. We send herewith N. Sch.3946 which shows the modifications we propose to retain the interlock pin in the 1st and 2nd speed slider. HDY. {William Hardy} | ||
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).