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).
Page two of a letter discussing an automatic shutter and comparing a new device to a known choke or strangler.
| Identifier | ExFiles\Box 142\3\ scan0158 | |
| Date | 12th March 1937 guessed | |
| - 2 - can be built in by which the shutter is automatically closed or opened after or before the key operating the electric equipment of the engine is taken off or inserted respectively. The difference between the known shoke or strangler and the new device is that the former does not shut off the atmosphere definitely but only limits the amount of air which can be sucked in. A further difference is that the shoke or strangler leaves the air-intake open when the engine is standing idle. I shall be glad to answer you any other special question which may be helpful and I am quite prepared to assist you to find the best suitable design for your car types. Looking forward to the favour of your answer, I am Yours faithfully Z. M.{Mr Moon / Mr Moore} Ralt | ||