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 clarifying the operating specifications for a Smithermet stem.
| Identifier | ExFiles\Box 39\4\ Scan232 | |
| Date | 11th February 1931 guessed | |
| S. SMITH & SONS (MOTOR ACCESSORIES),LTD., Cricklewood Works, LONDON, N.W.2. Continuation No. 2. spring of the bellows, and partly because of the increase in the volume of the gas; according to the sort of spirit used there will be a difference of 3 to 4 degrees at each end of the stroke. We, therefore, read your drawing as follows, (as it applies to E.80893 instruments):- "The Smithermet stem should start to move when a temperature of 74/76 degrees centigrade is reached, and should sustain a load of 25 1/2 / 29 1/2 lbs at 90 degrees centigrade just before resting on the inner stop." Yours faithfully, p.p. S. Smith & Sons (Motor Accessories) Ltd. F.S. Elford Midland Engineer. RECEIVED | ||