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).
Request to manufacture a set of cones for a Ph.III gearbox with four specific design instructions.
| Identifier | ExFiles\Box 94\1\ scan0272 | |
| Date | 18th December 1935 | |
| To RHC.{R. H. Coverley - Production Engineer} x328 Hs{Lord Ernest Hives - Chair}/Smth.3/KW.18.12.35. Ph.III Gearbox. Will you please make a set of cones for a Ph.III gearbox to the following specification - (1) 8° angle. (2) Lapped surface in outer piece. (3) Inner piece to have fine thread surface and straight slots a la{L. A. Archer} Buick. (4) Stiffen up both inside and outside cones. Make walls of outside cones 50% thicker and stiffen up inside cones as on N.Sch.4661. Hs{Lord Ernest Hives - Chair}/Smth. | ||