Letter regarding the testing of a 'Silca' spark plug and a request for its return.
| Identifier | ExFiles\Box 33\3\ Scan166 | |
| Date | 16th September 1921 | |
| R H 285a (100 T) (S. H. {Arthur M. Hanbury - Head Complaints} 159 11-8-20) G. {Mr Griffiths - Chief Accountant / Mr Gnapp} 2800 COPY. 49, Maresfield Gardens, Hampstead, N.W. Sept.16.21 Claude Johnson Esq. Dear Sir: Many thanks for having tested the 'Silca' plug and for the report. I have shown the report to the parties interested, they state that the plug was one of their earliest hand made plugs, and that the later ones have a central electrode of nickel steel which have been tested by the Napier Coy, and have been quite a success. Faithfully yours, (Sgd) James E.Withers. PS. Will you kindly return the plug - inventor wishes see it. J.E.W. | ||
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).