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 a supplier regarding a new Tungsten Contact for Magneto Work, including a specimen.
| Identifier | ExFiles\Box 35\6\ scan 024 | |
| Date | 16th February 1931 | |
| CONTRACTORS TO THE BRITISH & FOREIGN GOVERNMENTS. Sales subject to strikes, accidents, or causes beyond our control. Quotations subject to change without notice. TRADE MARK LION BRAND FOUNDED 1869 by GEO. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} BLACKWELL. Geo. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} Blackwell Sons & Co Ltd METALLURGISTS, MERCHANTS & MANUFACTURERS. ALLOYS & METALS FERRO-CHROMIUM, MOLYBDENUM, TUNGSTEN, TITANIUM, BORON, VANADIUM, URANIUM, ALUMINIUM. FERRO-SILICON, SILICO-MANGANESE, MANGANESE, ANTHONY COPPER-SILICON. STEREO LINO & MONO METALS. S.A.M. ALLOY THE PREMIER DEOXIDISER. "MATCHLESS" FIRE BRICKS IN CHROME, MAGNESITE, BAUXITE &C. RADIO-ACTIVE ORES, RADIUM, URANIUM ORES AND SALTS. WORKS: ALLOY - GARSTON DOCKS. MINERAL & FIREBRICK WORKS & KILNS. MINERAL MILLS CEFN RFD. BARYTES & SPAR MILLS-GRINDLEFORD. FINE GRINDING & MINERAL WORKS-MORSALL DALE LONDON OFFICE: 10, EASTCHEAP, E.C. MINERAL ORES CHROME ORE, MOLYBDENITE, WOLFRAM SCHEELITE, TITANIC, VANADIUM, URANIUM, THORIUM. BARYTES IRON ORE ZINC. BAUXITE, MAGNESITE, PLUMBAGO. NICKEL, COBALT, ANTIMONY. FLUOR SPAR, FELDSPAR. TALC PENCILS, SLICES. CABLES: BLACKWELL, LIVERPOOL. TELEPHONES 952 AND 959 CENTRAL. GARSTON 50. LONDON 3568 AVENUE. CODES: A.B.C. 4TH & 5TH EDITIONS. MOREING & NEAL, LIEBERS. WESTERN UNION. E.R.BROOMHALL. BLACKWELLS 3 & 4 LETTER CODE. ETABLISSEMENTS METALLURGIQUES. GEO. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} BLACKWELL FILS ET CIE. SOC. ANON. 18 RUE LAFFITTE, PARIS. ALLOYS WORKS ROCHEFORT-SUR-MAYENNE. The Albany, Liverpool. ENG. P.O Box 22. ALL REPLIES TO BE ADDRESSED TO THE FIRM AND NOT TO INDIVIDUALS. February 16, 1931. Ref. H.A.B. 17. Messrs. Rolls-Royce Ltd., Derby. Dear Sirs, We had some correspondence with you on the subject of Special Contacts; in fact, we had some made up for you. We have now a new Tungsten Contact which is giving very excellent results for Magneto Work. This metal gives only very slight oxidation, and very slight wear, and by a new welding process the inconvenience of the tips becoming detached from the screws is avoided. If this matter is of interest to you, we could probably arrange to have the contacts made up for you. We send you herewith a specimen screw Contact which you may care to try. Yours faithfully. GEO. G.{Mr Griffiths - Chief Accountant / Mr Gnapp} BLACKWELL, SONS & CO, LTD A W Blackwell DIRECTOR. Handwritten: X. 2894 | ||