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 a supplier regarding thermostat characteristics, the composition of 'Alumbro', and a quotation for car heater motors.
| Identifier | ExFiles\Box 156\2\ scan0054 | |
| Date | 1st April 1938 | |
| 1328 Telephone: SUNBURY-ON-THAMES 456 (6 LINES) Telegrams & Cables: THERMOSTAT, SUNBURY-ON-THAMES. Code: BENTLEY'S THE BRITISH THERMOSTAT CO., LTD. Makers of Scientific Instruments. DIRECTORS: COL. N. HUDSON. J.{Mr Johnson W.M.} E.{Mr Elliott - Chief Engineer} SHERLOCK } MANAGING. W. F.{Mr Friese} F.{Mr Friese} MARTIN-HURST L. S. SWINNERTON DYER. F.{Mr Friese} G.{Mr Griffiths - Chief Accountant / Mr Gnapp} POPLETT. TEDDINGTON WORKS. Windmill Road, Sunbury-on-Thames, Middlesex. Your Ref: Rm{William Robotham - Chief Engineer}/Std.11/AP: WMH/GN: April 1st, 1938. Messrs. Rolls-Royce Ltd. DERBY. Dear Sirs, We thank you for your letter of March 30th. The first thermostat which we have made up with "Alumbro" bellows had the following temperature characteristics - Opening Temperature........75°C. Fully Open...............90°C. The composition of "Alumbro" is stated by I.C.I. to be as follows:- 76% Copper. 22% Zinc. 2% Aluminium. We are concerned to hear of the trouble which you have had with the motor rheostats, and when we have had an opportunity of examining these we will take whatever steps are necessary to ensure that the trouble does not recur. We have pleasure in quoting for the car heater motor of which you have had a sample as follows:- With plain bearings, in lots of 1000........ 14/- each. " ball " " " " 1000........ 17/- " | ||