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).
Instructions for making and modifying Bentley oil pumps.
| Identifier | ExFiles\Box 149\2\ scan0140 | |
| Date | 11th February 1937 | |
| To HPS.{Horace Percy Smith - Experimental Factory Mgr} from Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} 126- Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell}1/AP.11.2.37. BENTLY OIL PUMPS. Will you please make up an oil pump to LeC.4288 (22° angle gears) with the driving gear bush flange (E.60060) machined to .975 -1/2 dia, and the recess for the flange in the case (EB.2131) to be concentric with the bush hole with a diam. of .975 + 1. This to be sent along with the rods and special big end bearings to Rm{William Robotham - Chief Engineer}/GWH.{George W. Hancock - Head Chateauroux} for fitting in 6.B.1V. Will you please replace the 10° angle gears on the pump on 3.B.1V. by 22° gears and at the same time make the flange of the driving bush a fit in the case as detailed above. Rm{William Robotham - Chief Engineer}/Swdl.{Len H. Swindell} | ||