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).
Letter to Messrs. Humber Ltd. about a method for correcting gears that jump out on the overrun.
| Identifier | ExFiles\Box 126\2\ scan0084 | |
| Date | 21th January 1939 | |
| 1069 c. HPS.{Horace Percy Smith - Experimental Factory Mgr} Rm{William Robotham - Chief Engineer}/Gry.{Shadwell Grylls}3/MH.{M. Huckerby} 21st. January, 1939. R.C. Hughes, Esq., Messrs. Humber Ltd., COVENTRY. Dear Hughes, When we were in Coventry at your works the other day you told us about your latest wangle to make sure that all gears tended to jump out on the overrun, correcting this by the 4 tooth dodge. You arranged the necessary "bell moulding" in the quenching process. Could you let us know how this is done. We have thought of cutting the teeth at an angle but this is very difficult. Kind regards, Yours sincerely, | ||