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).
Decision not to add vanes to the umbrella rotor for the battery ignition system.
| Identifier | WestWitteringFiles\R\October1927-December1927\ Scan134 | |
| Date | 8th December 1927 | |
| EFC. FROM E.{Mr Elliott - Chief Engineer} C. to BJ. HS.{Lord Ernest Hives - Chair} [text struck through] E1/M8.12.27. ~ 2 X8690 X4041 ORIGINAL [Stamp] re. UMBRELLA ROTOR. BATTERY IGNITION. R.{Sir Henry Royce} has decided not to make any attempt to add vanes to the umbrella rotor, as he thinks its chief purpose is that of a separator. [Stamp: RECEIVED DEC 9 1927 HS{Lord Ernest Hives - Chair}] E.{Mr Elliott - Chief Engineer} [Signature] | ||