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).
Continued memorandum detailing specifications for a bolt and a ratchet locking ring.
| Identifier | WestWitteringFiles\F\February1921\ Scan9 | |
| Date | 1st February 1921 | |
| To BA. from E.{Mr Elliott - Chief Engineer} -2- E1/C7/2/21 Contd. This bolt will be put in position before the universal nut is split pinned, and it should have a long head of .375" diameter. Referring to the ratchet locking ring for the oil retainer spring, this should be made without castellations on outside, although shown on Leo.1334, because its function is not to turn. E.{Mr Elliott - Chief Engineer} | ||