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 AC-Sphinx Sparking Plug Co. Ltd. regarding an order for 10 mm type Y-4 experimental sparking plugs.
| Identifier | ExFiles\Box 163\5\ img005 | |
| Date | 5th June 1934 | |
| TELEGRAMS: SPHINX, BIRMINGHAM. TELEPHONE: VICTORIA 2742-3-4. PRIVATE BRANCH EXCHANGE. 81812a. THE AC-SPHINX SPARKING PLUG Co. LTD. DIRECTORS: N. F.{Mr Friese} STOCKBRIDGE, W. O.{Mr Oldham} KENNINGTON, C. J.{Mr Johnson W.M.} BARTLETT. BRADFORD STREET, BIRMINGHAM, 12. THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS LTD OUR REF. NFS/NA{Mr Nadin} YOUR REF. Roy{Sir Henry Royce}/GEA. 6/VR.{E. S. Voller - Orders} June 5th 1934. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, We have your letter of the 1st inst., concerning your order No. 64527 covering one 10 mm. type Y-4 sparking plug. Without realising that your order was of an unusual or experimental nature, it was mistakenly referred to our regular Shipping Department, who being unfamiliar with the type of plug you have specified, wrote you accordingly on the 30th ultimo. The situation with regard to these 10 mm. plugs is that we discussed their construction in detail with the Engineering Department of our American factory during the writer's visit there last February, and brought back here at that time a number of preliminary samples. We are sending one of these to you for your inspection and shall be glad if you will accept same with our compliments. Actually the enclosed sample is the construction that in production will be known as type Y-6, whereas you are specifical enquiring for type Y-4. The only difference in these two types is that the insulator nose on the Y-4 is slightly shorter than that on Y-6, and we believe also that the length of the plug shoulder, i.e. from the hexagon to the gasket, is also slightly shorter, although we are not quite certain on the latter point. The situation in America is that the AC factory over there will shortly be in active production with a range of these 10 mm. plugs, and as the need for a small plug of this kind arises over here we shall similarly put the plug into production for manufacturing completely at this factory. If there is any other way in which we can help you or co-operate with you in the use of plugs of this or any other size, we place our services entirely at your disposal. Yours faithfully, THE AC-SPHINX SPARKING PLUG. CO. LTD. N.F. STOCKBRIDGE. MAKERS OF AC SPARKING PLUGS - AC AIR CLEANERS - AC PETROL PUMPS - AC PETROL GAUGES - AC OIL FILTERS - AC OIL GAUGES | ||