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 manufacturing difficulties with Sinterkorund plugs for a Bentley.
| Identifier | ExFiles\Box 163\5\ img035 | |
| Date | 12th June 1936 | |
| TELEGRAMS: SPHINX, DUNSTABLE 46011. TELEPHONE: DUNSTABLE 360 PRIVATE BRANCH EXCHANGE. 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. DUNSTABLE BEDFORDSHIRE THE SOCIETY OF MOTOR MANUFACTURERS & TRADERS OUR REF. NFS/GEB. YOUR REF. Hs{Lord Ernest Hives - Chair}/Wst.6/JH. 12th June, 1936. Messrs. Rolls-Royce Limited, Derby. For the Attention of Mr. H.{Arthur M. Hanbury - Head Complaints} E.{Mr Elliott - Chief Engineer} West. Dear Mr. West, You will remember that vide item (4) of my letter of May 29th we are making up for you two sets (fourteen plugs) of 14 mm. sinterkorund plugs for test on your Bentley job. In my letter I mentioned my understanding that the plain portion of the body under the hexagon on these plugs was to be not less than 11/16". In laying out this plug we find that we have considerable difficulty in getting this length of body. I shall be glad if you will let me know whether it will be permissible for us to reduce this figure to 7/16". This will enable us to give you a better plug and we trust that the pocketing of the body on the engine itself will permit of this reduction. Yours faithfully, N.F. STOCKBRIDGE, Managing Director. P.S. Since writing the above, I have received your letter of the 11th instant enclosing blueprints of your existing standard Instruments. Many thanks for these details, which will give us all the information we require to make up a set of Instruments for test. N.F.S. MAKERS OF AC SPARKING PLUGS - AC AIR CLEANERS - AC PETROL PUMPS - AC PETROL GAUGES - AC OIL FILTERS - AC OIL GAUGES | ||