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).
Patent specification for improvements to carburettors for internal combustion motors or engines.
| Identifier | ExFiles\Box 1\7\ B001_X15 20 46 50 59-page288 | |
| Date | 17th September 1918 | |
| Godward Carburettor No 4 119,063 PATENT SPECIFICATION Application Date, Aug. 17, 1917. No. 11,839/17. Complete Accepted, Sept. 17, 1918. COMPLETE SPECIFICATION. Improvements in or relating to Carburettors for Internal Combustion Motors or Engines. We, ALFRED JAMES JUNG, Engineer, of 7A, Princes Street, Westminster, London, W., and THE GODWARD CARBURETTOR CO. (LONDON) LIMITED, of 53, Victoria Street, Westminster, London, S.W., do hereby declare the nature of this invention and in what manner the same is to be performed, to be particularly described and ascertained in and by the following statement:— This invention relates to carburettors for internal combustion engines or motors, and refers to carburettors such as described in the Specification of British Letters Patent No. 102,043 in which the air and liquid fuel pass into or enter an expansion chamber that is usually lined with absorbent material and expands towards the induction pipe from the inlet for fuel mixture. In such carburettors the air which enters through a single opening has been controlled hitherto automatically by the suction of the engine acting on a coil-spring valve situated in the air inlet, and the spring has been so arranged that either no air passes into the apparatus unless and until the convolutions of the spring have been separated by the suction of the engine or a free air passage has been left through or around the spring to allow a small quantity of air to pass without expanding the spring. The chief object of the present invention is to render the air control more positive and direct and to place the supply of air directly under the control of the driver. In accordance with this invention there is provided in the air inlet, a throttle, lift or other appropriate type of mechanical valve which is adapted to be operated through suitable mechanism by the driver to close or vary the air supply inlet and this air inlet valve controlling mechanism is connected in a known manner with the usual throttle operating mechanism so that these valves may be operated simultaneously or by providing adjustable lever or similar connections to provide for the air inlet being varied directly proportionate to the extent of the throttle opening. Referring to the accompanying drawings:— Fig. 1, is a front elevation of a carburettor embodying the present invention. Fig. 2, is a side elevation of Fig. 1. Fig. 3, an elevation viewed at right angles to Fig. 2 and Fig. 4 is a top plan view. A is the mechanically operated valve in the air inlet B. C is the expansion chamber, D the ordinary throttle, and E the fuel or petrol inlet leading to the nozzle F.{Mr Friese} The expansion chamber C comprises an inner member or tube c and an outer tubular member c¹ the bell c², being situated between the members c, c¹. [Price 6d.] | ||