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 order six pump spindles of two designs in Firths Nitro Alloy Steel, specifying material properties and hardening requirements.
| Identifier | ExFiles\Box 154a\1\ scan0099 | |
| Date | 7th November 1928 | |
| H9469 c. Hs. {Lord Ernest Hives - Chair} BY2/G.7.11.28. Referring to the two pump spindles, blueprints attached E54690 and E77231, would you kindly order up six of each of these in Firths Nitro Alloy Steel. The material should have a tensile figure equal to that of the stainless steel, from which they are made at the moment. The parts that would have to be hardened are the extreme tips and the parts marked 'P' on E.77231, and the plain maximum diameter short of the keys on E.54690. BY. {R.W. Bailey - Chief Engineer} Bry | ||