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 S. Smith & Sons regarding the performance and supply of thermostat units.
| Identifier | ExFiles\Box 156\2\ scan0005 | |
| Date | 6th January 1938 | |
| 105 (1328) CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING THE ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1896 TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. CABLES: SPEEDOFAC, LONDON. CODES: MARCONI, COMMERCIAL, BENTLEY'S. S.Smith & Sons (Motor Accessories) Ltd CRICKLEWOOD WORKS LONDON, N.W. 2 BRANCHES AT PARIS MILAN SYDNEY WELLINGTON AGENCIES AND SERVICE STATIONS THROUGHOUT THE BRITISH EMPIRE AND IN ALL THE PRINCIPAL COUNTRIES SHOWROOMS & DEPOTS 179-185 GT PORTLAND ST LONDON. W.1 26-33, COX ST LIVERY ST BIRMINGHAM 14A JACKSONS ROW DEANSGATE MANCHESTER 21, DRURY STREET GLASGOW DUBLIN & BELFAST Please quote our reference: S.10 Your Ref: Rm{William Robotham - Chief Engineer}/Std.6/AP. 6th January, 1938. Messrs. Rolls Royce Ltd., DERBY. Dear Sirs, For the attention of Mr. Steadman Replying to your letter of the 3rd inst. we are pleased to hear that the Thermostat Unit Code X.30065 has proved satisfactory, but that you would like a further sample Thermostat having a starting temperature of 83°C. We have made up such a unit, and although it is possible we may be able to improve on the figures given below it is, nevertheless, the best we can do in the time available without making further experiments. The Thermostat we are sending you under separate cover starts to open at 83°C. and is full open with 5/16" lift at 98°C. An alteration in the valve seating will not effect the price other than a few pence; the present valve aperture diameter is 1.5/16" and we find that the rough casting is such that we could reduce to 1¼". The valve diameter should, if possible, remain as standard to avoid interfering with production. This Thermostat which we are sending you, being an experimental Thermostat, is known as Code EX.X.10225, and if put into production will have the Code X.30065/5. Yours faithfully, p.p. S. SMITH & SONS (MOTOR ACCESSORIES) LIMITED. THERMOSTATIC CONTROL DEPARTMENT. WP To avoid delay all envelopes should be addressed to the firm. | ||