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).
The design and implementation of foot warmers for American practice.
| Identifier | ExFiles\Box 137\1\ scan0007 | |
| Date | 28th January 1920 guessed | |
| X, 3506. A.G.Elliott Extract from E1/G30119. (10) FOOT WARMERS For American practice, it was considered necessary to make some provision for foot warmers in the rear part of the body Mr. Royce approved of the suggestion to leave a union of about .625" diameter on the exhaust pipe for this purpose. Mr. Olley will make enquiries as to what foot warmers are obtainable, and get particulars of their design. It was pointed out that the foot warmer may have to stand about 100 lbs. explosion pressure from the exhaust if the connecting pipe is large enough and short enough to transmit flame. The exhaust heated foot warmers unless properly fitted may become hot enough to destroy the boots or clothes of the passengers. Alternative water heated systems, and a system whereby the exhaust heated a small reservoir of water, were suggested. * Mr. Royce would like Mr. Hives to experiment with exhaust gas and water heated foot warmers. The front seat footboards were considered to be suffic-iently heated by the warm air from the engine, particularly on cars fitted with radiator shutters, which would still keep cosily warm in cold weather, by reason of the radiator shutters being closed. * What was to become the universally preferred system pioneered successfully by Clayton Dewandre | ||