GB190618580A - Improvements relating to Carburetters for Internal Combustion Engines. - Google Patents

Abstract

18,580. Parnacott, A. E., and Morgan & Co. Aug. 18. Gas or explosivevapour engines, carburetting in. In a carburettor of the type described in Specification No. 14,397, A.D. 1905, the needle valves controlling the fuel and water supplies are closed by gravity and raised by a lever worked by the suction-operated sleeve which controls the air inlet ports. Fig. 3 is a vertical section showing the sleeve a‹ in the closed position, cutting off the admission of air through the slots d<1>, which are inclined as described in the Specification. Thesleeve supports one end of a lever a<2> which works a a rocking piece c<7>, Fig. 4, pivoted, as shown, and d carrying adjustable sliders c<6>. to which are pivoted pins c<4> the upper ends of which raise the needle valves. The separate valves are thus independently adjustable. The sleeve a<0> is carried upon a spring a<6> which yields in the event of a back-fire. The inner and outer vessels e, e<1> are also connected by a sinuous spring ring e<5>, the exhaust gases being admitted to the outer vessel through a valve f<3> controlled by a bell f acting as a float when liquid fuel collects in the bottom of the vessel e. Light oil may be used at starting, and when the apparatus is used on a motor road vehicle, the fuel tank is placed in front of the carburettor, so that the pressure of oil at the inlet is greater in ascending than in descending an incline. The mixture may be diluted with air, to the extent of admitting air alone to the cylinder, by operating a ring d<4> covering a ring of ports, as shown. A throttle valve is placed in the outlet pipe B. The needle valves are preferably constructed of nickel, and the seating is formed as shown to prevent the necessity of regrinding.