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).
Requesting tests to determine the necessity and type (right or left hand) of threads for back nuts on studs.
| Identifier | Morton\M11\ img160 | |
| Date | 1st March 1919 guessed | |
| To BY.{R.W. Bailey - Chief Engineer} from E.{Mr Elliott - Chief Engineer} -2- E4/G17319 Contd. Additionally, there should be a further one between the detachable nut and the stud. After a consideration of the relative weight on, the diameter of, and the probable relative amount of slack in each pair of surfaces it seems more probable than not that the studs as shewn require back nuts with right hand threads. This matter should be investigated as a preliminary on the revolving test to determine whether right and left hand threads are necessary for back nuts and if so, which hand is required. Would Mr. Hives please carry out these tests for the purpose of satisfying the queries raised on drawings LeC.1063, and LeC.1067. E.{Mr Elliott - Chief Engineer} | ||