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).
Mr. Royce's decision on standardizing bolt schemes, specifically using a taper bush.
| Identifier | ExFiles\Box 75\3\ scan0338 | |
| Date | 28th January 1922 guessed | |
| CONTD:- -2- enabling a single bolt to be used. You may very likely find it possible to adapt this to existing side channels. It was not thought that a taper bolt alone could be got a tight fit in the hole from the end to end, hence the use of a taper bush at the nut end. To summarise, Mr. Royce would like the quarter bolt scheme standardised on LeC.1525 with the 5/16" bolt scheme of the same pattern in reserve in case of trouble, and he would like scheme.1524 tested also. E.{Mr Elliott - Chief Engineer} | ||