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Patents Completed.

14th October 1915
Page 20
Page 20, 14th October 1915 — Patents Completed.
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Binks Petrol-paraffin Carburetter. Engine Starting Mechanism. Sparking Plug Modifications. Another Carburetter Construction.

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. L. BINKS. No. 23,091, dated 26th November, 1914.— This carburetter is provided with two float chambers, one for petrol and the other for paraffin, with a two-way valve between them so that either oneler the other can be brought.

into use. A main jet and a pilot jet are provided, of which the main jet projects into the induction tube below the butterfly valve, and is provided with a controlling damper, while thc pilot jet opens against the edge of the butterfly valve when the latter is nearly closed. The edge of the butterfly valve opposite the pilot jet is formed scoop-shaped to direct the air past the jet. A cam and lever mechanism connects the butterfly valve and the damper of the main jet, EA that when the valve is nearly shut the main jet is closed and fuel drawn from the pilot jet, but as the valve opens and suction on the pilot jet decreases, the main jet is brought into use through the removal of its damper.

II. C. M. STEVENS and OGSTON MOTOR CO., Tern., No. 18,898 of 1914, dated 21st August, 1914.—A lever or pedal is provided for starting the engine of ,a car through the gearbox, from the driver's seat. On moving the lever to start the engine a toothed sector on the lever is brought into mesh with a bevel wheel carried on the hub of a spur wheel on the secondary shaft of the gearbox. This spur wheel is the one used to drive the secondary shaft, and is always in mesh with a pinion on the driving shaft, so that the motion is transmitted from the bevel wheel to the spur wheel and thence by the driving shaft and engine clutch to the engine. The starting let,er is re.turned by a spring, and this idle return movement is permitted by providing a free-wheel drive between the bevel wheel and spur wheel on the secondary shaft. In running, the sector on the starting lever is out of mesh with the bevel wheel. W. F. GRAFTON and W. D. Csinetny, No. 863, dated 19th January, 1915.—This sparking plug comprises a steel body hollowed out to receive an inner insulator, which supports the central electrode and which is held in place against the force

of explosion by a metal plugging piece screwed into the miter sod of the plug body. On the outer end of the plug is mounted an outer insulator held in place by a milled nut on the central electrode and deeply grooved to reduce electrical leakage. Between the milled ant and the outer insulator is a spring washer to allow for expansion, and in order to clamp the live cable to the plug a cup-shaped washer is provided pressed by a spring on to the milled nut.

J. S. V. litexFono, No. 18,552, dated 11th August, 1914.— The accompanying drawings show in section three views of a carburetter. The jet opens into the choke-tube at its narrowest diameter in the usual way, but the jet itself is surrounded by a tube to which the fuel is admitted at the bottom. This outer tube opens into a chamber surrounding the upper part of the jet, and from this chamber a by-pass passage leads to the engine side of the throttle-valve ; the spindle of the throttle-valve is extended to form a cock controlling the by-pass passage, and the openings in the cock are so arranged that as the throttle-valve is opened, the by-pass is also opened. After the throttle reaches a predetermined position, however, the by-pass is dosed. Auxiliary air inlets may he provided in the side of the choke-tube near the throttle, these inlets being indicated in the sectional elevation. Alternatively another auxiliary air inlet may be conti'olled by a cock mounted on the other end of the throttle-valve spindle in the same manner as the by pass.

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