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 concerning the specifications and testing of a thermostat.
| Identifier | ExFiles\Box 156\2\ scan0010 | |
| Date | 14th January 1938 | |
| 105 1328. ENGINEERING & ALLIED EMPLOYERS NATIONAL FEDERATION 1896 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING 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.{Capt. P. R. Strong} LONDON, W.1. 26-33, COX ST LIVERY ST.{Capt. P. R. Strong} 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.9/JH. 14th January 1938. Messrs. Rolls-Royce Ltd., DERBY. Dear Sirs, For the attention of Mr. C.S. Steadman. The writer regrets the delay in answering the query raised in your letter of the 8th inst., but has only just returned from the Midlands. The Thermostat you require is nearly completed and we hope to despatch same tomorrow. With regard to the last paragraph of your letter it is possible for us to get the range you require, namely, 10°C./11°C. but we would not say that this is always easy without making a modification to the bellows housing, which, unfortunately, would be a departure from standard and increase the cost. We have been endeavouring to get a satisfactory job using a standard product, which we believe is also your wish. The test on the Thermostat which we have nearly completed shows that the valve cracking open at 79°C. is full open with 5/16" lift at 93°C. which is a 14° range, and quite frankly whilst we agree that 10°C./11°C. is better, 14°C./15°C. is quite good. We are nevertheless continuing to experiment but trust that the sample we are sending tomorrow will enable you to conduct your test. Yours faithfully, p.p. S. SMITH & SONS (MOTOR ACCESSORIES) LIMITED. THERMOSTATIC CONTROL DEPARTMENT. To avoid delay all envelopes should be addressed to the firm. | ||