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 despatch and specifications of a thermostat.
| Identifier | ExFiles\Box 39\4\ Scan197 | |
| Date | 17th November 1930 | |
| X3499. TELEPHONE: EAST 0149. S. SMITH & SONS (MOTOR ACCESSORIES) LTD., BIRMINGHAM WORKS. HEAD OFFICE: CRICKLEWOOD WORKS, LONDON, N.W.2. Reply to:- 173-177, CLIFTON ROAD, ASTON, BIRMINGHAM. OUR REF. FGE/ELG. YOURS HS{Lord Ernest Hives - Chair}/RM{William Robotham - Chief Engineer}2/AD. 17th Nov., 1930. [STAMP: RECEIVED 18 NOV 1930] Messrs. Rolls Royce Ltd., Nightingale Rd., Derby. Dear Sirs, For the attention of Mr. Robotham. With further reference to Thermostat to Arrangement Drawing No.E.80893, we are despatching under separate cover one of these instruments, arranged with a filling which gives the result shewn in the accompanying graph. We think that this fulfils the requirements expressed in your letter of the 10th instant. If any variation is required please let us know; in the meantime, we are proceeding with the bulk pending the settlement of this detail. In connection with the filling of these instruments, it would be as well to allow a tolerance of 5% in terms of the thrust developed at any given temperature; this is to take care of the differences in the natural spring of the bellows, and the amount of pressure necessary to overcome this spring. Yours faithfully, p.p. S. Smith & Sons (Motor Accessories) Ltd. F S Effad Midland Engineer. PS. We should be glad if you will address any remarks affecting the technical features to the above address. Encl: Graph R.V.60. | ||