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).
Letter from Lodge Plugs Limited regarding the testing of two new types of Aero Plugs.
| Identifier | ExFiles\Box 79\1\ scan0221 | |
| Date | 17th February 1920 guessed | |
| ourselves think such a method of air cooling is of much practical value, but it would be interesting to test the plug out to see whether it has any advantage. We shall be glad to know if you are still interested in plugs for Aero engines. We have now standardized two types of Aero Plugs which we think are a great advance on anything which has been done before, and we should very much like to have your [handwritten insertion: y to him] opinion of these plugs, if you could arrange to carry out an extended test on them. If you are prepared to do this we shall be very glad to know how many plugs of each type you would require for the purpose of a test. Awaiting the favour of your reply, Yours faithfully, LODGE PLUGS LIMITED. [Signature: Bernard Hopps] DIRECTOR. Enc. (4 Special C9) [Stamp] ENCLOSURE No 540 "JUSTSO" | ||