Patents Completed.
Page 22
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More Carburetter Improvements. Piston-rod Packing.
Copies of complete specifications of the patents published on this page can be obtained from the Sales Branch, Patent Office, Holborn, W.C., at the cost of sixpence for each specification.
C. ROWN and Bow N and BARLOW , LTD., No. 8460, dated 3rd April, 1914.—In this carburetter the air inlet passage is arranged horizontally and the jet opens upwards into it on its underside. The jet is formed with a projecting lip to cause the air to take up the fuel more readily. The throttle is ar
ranged to close towards the lower side of the air inlet so that with any opening of the throttle the air is drawn down over the jet, but the jet is spaced sufficiently far from the throttle to prevent it giving too rich a mixture when the throttle is nearly closed.
A pilot jet which is quite independent of the main jet opens into the passage in the throttle, so that it can be operative when the throttle is closed, but this pilot jet is arranged to be closed when the throttle is open.
ALBION MOTOR CAR Co., LTD., and T. B. MURRAY, No. 21,764, dated 30th October, 1914.—When an engine is running light at a high speed, as when running downhill, with the throttle valve partially closed, misfiring is apt to occur owing to the weakness of the mixture. According to this invention, a governor-control is fitted which on reaching a pre-determined maximum speed, operates to close the throttle-valve and cut out the carburetter independently of the hand-control. The throttle-valve spindle carries three arms. One is connected to the hand control through a lost-motion device, the second is connected to the governor through a spring link, and the third is used to set the minimum opening for the throttle. When the throttle is opened by the hand-control the spring governor link is compressed, but if the speed becomes excessive the governor operates through the spring link and takes up the lost motion in the hand control to close the throttle completely. When, however, the hand control is used to close the throttle the minimum-opening stop operates
T. HILL and H. VIVIAN, No. 8501, dated 3rd April, 1914.— This specification describes a form of packing for piston rods in which the split-ring principle is combined with the labyrinth system. Packing rings are formed with a groove on the side near the shaft and are split, and pressed forward on to the rod by a spring. The pressure on the two sides of the rings is equalized, by providing at intervals a passage from the interior of the ring to the outside of the spring backing. . This backing is formed with a groove which extends nearly all round so that practically equilibrium of pressure is obtained for each ring. The lubrication may be introduced through these pressureequalizing passages.
J. C. Conti:mum, No. 7279, dated 23rd March, 1914.—This carburetter is designed to give a uniform flow of liquid to the jet independently of variations of atmospheric pressure, and also to provide an initial adjustment which will maintain mixtures of a definite strength under varying atmospheric conditions. The accompanying drawing is a diagrammatic representation of a carburetter. The float-feed-chamber is open to the atmosphere, and it supplies the fuel to a central chamber which in turn supplies it to the jet. The supply to the central chamber is controlled by a needle valve which is operated against a spring by the engine suction.
The float-feed-chamber and the inner chamber are both open to atmospheric pressure, so that the rate of flow for any given opening of the needle valve depends solely on the head of liquid and is independent of atmospheric pressure. The jet is so positioned that its nozzle opening is at substantially the same level as the liquid in the float-feed-chamber. A detailed description and drawings of a complete carburetter are given in the specification.