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).
Page 2 of a letter detailing technical faults found in a roller component.
| Identifier | ExFiles\Box 153\2\ scan0144 | |
| Date | 25th May 1936 guessed | |
| -2- (3) Soft case hardening. (4) Eccentricity of roller in exceed of 0.001 clock reading on contact faces. (5) Excessive width across A as shown on attached sketch causing contact on incorrect faces and damage to worm. (6) Wide variations of size B on sketch. So far as the functioning of the roller is concerned it is not necessary for the surfaces marked X X to be ground as these do not contact with the worm at any time. Yours faithfully, FOR ROLLS-ROYCE LTD. | ||