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 responding to tests on an experimental Carburetter Temperature Control Unit.
| Identifier | ExFiles\Box 123\1\ scan0120 | |
| Date | 6th September 1938 | |
| 109 1038 ENGINEERING AND ALLIED EMPLOYERS' NATIONAL FEDERATION 1926 CONTRACTORS TO ADMIRALTY, WAR OFFICE & AIR MINISTRY BY APPOINTMENT TO HIS MAJESTY THE KING TELEPHONE: GLADSTONE 3333 (20 LINES) TELEGRAMS: SPEEDOFAC, PHONE, LONDON. S.Smith & Sons (Motor Accessories) Ltd CABLES: SPEEDOFAC, LONDON. CODES: MARCONI, COMMERCIAL, BENTLEY'S. CRICKLEWOOD WORKS LONDON, N.W.2 BRANCHES AT PARIS MILAN SYDNEY WELLINGTON AGENCIES AND SERVICE STATIONS THROUGHOUT THE BRITISH EMPIRE AND IN ALL THE PRINCIPAL COUNTRIES SHOWROOMS & DEPOTS AT 179-185 GT PORTLAND ST LONDON, W.I. 26-33, COX ST LIVERY ST BIRMINGHAM 14a JACKSONS ROW DEANSGATE MANCHESTER 21, DRURY STREET GLASGOW DUBLIN & BELFAST Please quote our reference: S.10 Your ref:- Rm{William Robotham - Chief Engineer}/CTS.{C. Trot Salt - Carburation}4/MH.{M. Huckerby} 6th September 1938. (Dic.5/9/38) Messrs. Rolls-Royce Limited, DERBY. Dear Sirs, For the attention of Mr. C.T. Salt. With reference to your letter of the 31st ult. in which you refer to tests you have made on our experimental Carburetter Temperature Control Unit, it is a little difficult for us to lay down any laws governing this device without knowing the conditions under which you are operating. It is important, however, to bear in mind that this device is not designed to provide anything different from other heating methods. In other words, all it does is to provide quickly and maintain under all circumstances, whatever heat conditions the designer of the engine requires. If by means of hot spot, under bonnet air heat, conducted heat etc. it is hoped that the mixture reach the combustion chamber at 60°C. then you can do exactly the same thing with this device. The only difference is that the device will do it accurately and at all time, Summer and Winter, and do it very quickly, whereas by other methods our view is you cannot do these things at all. Everyone must agree that you cannot do it accurately Summer and Winter. We are wondering whether you have really got a properly insulated pipe, as we generally find that there is a tendency on the part of manufacturers not to wish to do away with the hot spot, whereas it will be obvious to you that this unit could dispense with this method, which has become generally accepted in the motor trade. To avoid delay all envelopes should be addressed to the firm. contd: | ||