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).
The submission of Sphinx and AC Titan spark plugs for testing.
| Identifier | ExFiles\Box 79\2\ scan0174 | |
| Date | 11th October 1922 | |
| X1026 Hs.{Lord Ernest Hives - Chair} from ROY.{Sir Henry Royce} ROY{Sir Henry Royce}18/MG/11.10.22 The Sphinx Plug Company, who are now associated with the A.C.Company of U.S.A., claim that collaboration with the American Works has made it possible for them to put Plugs on the Market equal, if not better than any other British make, and have sent us :- 6 Plugs type A.C.Titan 6 Plugs type A.C.Sphinx which they are anxious we should test out. ROY.{Sir Henry Royce} Plugs herewith. | ||