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).
The patterns for the Humber Epicyclic Gearbox for the 40/50 and 20/25 models.
| Identifier | ExFiles\Box 136\4\ scan0069 | |
| Date | 13th November 1933 | |
| HS{Lord Ernest Hives - Chair} X2061 To E.{Mr Elliott - Chief Engineer} FROM Sg.{Arthur F. Sidgreaves - MD} Copy to WOP.C.Hs.{Lord Ernest Hives - Chair} BY C.HEY. re Humber Epicyclic Gearbox. Sg{Arthur F. Sidgreaves - MD}13/E13.11.33 I am in receipt of E.6/HP.10.11.33. I shall be glad to know whether the patterns for the gearbox referred to in the first paragraph are for both 40/50 and 20/25. I have noted with interest the other remarks in your memo. and the penultimate paragraph rather bears out what Hs.{Lord Ernest Hives - Chair} said some time ago and to which I referred in my memo. Sg.{Arthur F. Sidgreaves - MD} | ||