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 The British Thermostat Co., Ltd. regarding the suitability of diaphragm type bellows versus spun bellows for a thermostat.
| Identifier | ExFiles\Box 156\2\ scan0161 | |
| Date | 28th November 1938 | |
| 1328 Telephone: SUNBURY-ON-THAMES 456 (6 LINES) Telegrams & Cables: THERMOSTAT, SUNBURY-ON-THAMES. Code: BENTLEY'S [Logo: FBI] FEDERATION OF BRITISH INDUSTRIES INCORPORATED BY ROYAL CHARTER [Logo: JB] REGISTERED TRADE MARK [Logo: NUM] MEMBERS OF THE NATIONAL UNION OF MANUFACTURERS 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. Our Ref. WL/OH. Your Ref. Rm{William Robotham - Chief Engineer}/Std.7/MH.{M. Huckerby} 28th November 1938. Rolls-Royce, Ltd., Derby. [Signature: W. A.{Mr Adams} Robotham] Dear Sirs, We thank you for your letter of the 24th instant. We confirm that we do not consider the diaphragm type of bellows more satisfactory than the spun bellows in view of the number of solder joints involved, and we do not think the difference in cost warrants experiments with a thermostat fitted with these bellows. Yours faithfully, THE BRITISH THERMOSTAT CO.,LTD., [Signature] W. Lund. | ||