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 an instrument company discussing the feasibility of a vapour tension thermostat and proposing an alternative design.
| Identifier | ExFiles\Box 77\4\ scan0256 | |
| Date | 28th July 1922 | |
| N4240 TELEGRAMS: INSTRUMENT, CAMBRIDGE. CODES: A.B.C. (5TH AND 6TH EDITIONS); WESTERN UNION; BENTLEY'S. TELEPHONE: CAMBRIDGE No. 615. THE CAMBRIDGE AND PAUL INSTRUMENT COMPANY, LIMITED, INCORPORATING THE CAMBRIDGE SCIENTIFIC INSTRUMENT CO., LTD., CAMBRIDGE. AND ROBT. W. PAUL, LONDON. REGD. TRADE MARK. HEAD OFFICE AND SHOWROOMS: 45, GROSVENOR PLACE, LONDON, S.W.1. WORKS: LONDON AND CAMBRIDGE. YOUR REF ROY{Sir Henry Royce}/Msl/FJ27722. CAMBRIDGE, ENGLAND. IN REPLY PLEASE QUOTE WGC/MW 28th July 1922. Messrs. Rolls-Royce Ltd., Nightingale Road, Derby. Dear Sirs, Radiator Thermostats. We thank you for your enquiry of the 27th instant. We fear that we could not give serious consideration to the manufacture of a vapour tension thermostat on the lines of the blue print submitted. We believe that it would be possible to design a very much more robust instrument for this purpose on the differential expansion principle. If you would like us to look more closely into this we should be obliged if you will send us drawings showing what room is available in the position in which you would wish such a thermostat to be fixed. We would, of course, prefer a considerable length, such a length as corresponds to the full width of the radiator, if possible. Yours faithfully, For THE CAMBRIDGE AND PAUL INSTRUMENT CO. LTD. W.G. Collins Director & Works Manager. | ||