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).
Quoting Mr. Royce's questions regarding the design of an annulus gear following recent breakages.
| Identifier | WestWitteringFiles\A\November1917\ Scan3 | |
| Date | 17th November 1917 | |
| EP.{G. Eric Platford - Chief Quality Engineer} from E.{Mr Elliott - Chief Engineer} c. to Ry. c. to H.{Arthur M. Hanbury - Head Complaints} ORIGINAL. E3/W17.11.17. H.{Arthur M. Hanbury - Head Complaints} Re - Broken Epicyclic Gear. X. 2328 X. 1445 With reference to the recent breakages of the annulus gear, would you please note that Mr. Royce asks "Are these annulus gears of the old thin type with timing marks indented on the outside of the rim and the gear separate from the flange which holds it to the crankshaft. Further are we still indenting with timing marks the latest type of annular gear with the thick rim". Would you kindly reply to this? E.{Mr Elliott - Chief Engineer} | ||