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Patents Completed.

4th September 1913
Page 50
Page 50, 4th September 1913 — Patents Completed.
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Complete specifications of the following patents will be sent to any address in the United Kingdom by the Sales Branch, Patent Office, Holborn, W.C., upon receipt of eightpence per copy.

Renold Chain Improvement.

C. G. Renold and Hans Renold, Ltd., No. 22,163, dated 30th September, 1912. —According to this invention means are provided for preventing chains of the silent or inverted-tooth type from working off their sprocket wheels sideways.

These mean e consist of a series of discs or washers arranged on link-studs at the middle of the width of the chain. The sprocket wheels are provided with a circumferential groove mid-way of their width, and the discs on the chain run in this groove. It will therefore be seen that the chain is prevented from moving sideways in a very efficient manner, and there is very little friction owing to the rollers being capable of turning on their studs.

An Austin Carburetter with a Needle-controlled Jet.

The Austin Motor Co., Ltd., and H. Austin, No. 23,975, dated 21st October, 1912.—In this carburetter a cylindrical plug is fitted within the carburetter body and is provided with a transverse passage. A cylindrical valve surrounds this plug, fitting closely on one end and round its circumference. A casing surrounds the valve and holds it in place by a small inwardly projecting flange. The jet is disposed in the centre of the cylindrical plug and a needle-valve located above it. This valve is mounted in a sliding piece which is held up by a spring. A cam-profile is provided on the outer cylindrical valve to engage this sliding piece so that, when the valve is

turned in the direction to cut off mixture from the engine, the cam-surface causes the needle-valve to be moved down, so closing or restricting the fuel nozzle. The cam-profile is so shaped as to ensure that the closing of the fuel jet is proportioned to the closing of the valve and always to give the best results in working. The air passages are also arranged with the same object.

Adams Automatic Coupling for Engine Starter.

H. C. M. Stevens and the Adams Manufacturing Co., Ltd., No. 17,289, dated 25th July, 1912.—This invention relates to autornatie couplings or clutches for use especially in driving a dynamo from an internal-combustion engine, the dynamo being adapted to be used as a motor for starting up the engine, the coupling being so designed as to effect this. It is necessary, when the dynamo is running as a motor to start the engine, that there should be a considerable reduction in the speed. The gear, as shown in the accompanying illustration, is provided with a pulley wheel which is

suitably connected to the internal-combustion engine, the flange of the pulley being provided with an extension carrying an internally-toothed ring. It also carries a spring-actuated pawl which engages with a ratchet. wheel on the armature shaft of the dynamo. It will be seen that, when the engine drives the pulley in the direction in which the pawl grips the ratchet wheel, the dynamo is driven directly. The dynamo casing is provided with another ratchet wheel with which engages a pawl attached to the plate carrying planet. pinions. This pawl and ratchet prevent the rotation of the plate when driving in the opposite direction. The pawl is weighted so as to be thrown out of action when not required by centrifugal force. It will be seen that, when the dynamo is connected to a source of electricity to enable it to ran as a motor, it. will drive the sue pinion, which is rigidly connected to its shaft, this sun pinion driving the internally-toothed ring through the medium of the planet gears 'which give a reduction in speed. As the internallytoothed ring is a. rigid part of the pulley, this communicates the motion to the engine for starting purposes. A Handy Garage Trestle.

H. Coleman, No. 20,245, dated 5th September, 1912.—The use of trestles in erecting or repairing a chassis is not always convenient, and the car has always to he jacked up before the trestle can be inserted. The present invention

provides a pedestal which serves the function of both jack and trestle. The frame is provided with two bosses at the top, in one of which a screwed spindle is mounted, and in the other a plain spindle with a locking screw. These two spindles carry a bracket suitably shaped to hold

ehassis-frame. An extra swivel-plate may he provided at one side of the bracket to revent the chassis slipping off. Conveniently, two of these trestles are held together by adjustable tie-rods so that any width of chassis is readily accommodated.

Knight Valve-.Gear.

C. Y. Knight, No. 16,845, dated 19th July, 1912.—This invention relates to high-speed engines of the sleeve-valve type in which the desired motion is given to the valve by two eccentrics or cranks, one of which revolves at crankshaft speed and the other at half-speed. The particular construction described in the specification involves a floating lever which has small connecting rode at each end coupling it to two cranks which are arranged one on each aide of the crankshaft. A single chain drives both auxiliary shafts directly from the main crankshaft, and the valve is coupled to the floating lever by means of pins, the lower half of which is shown in the accompanying drawing.

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Organisations: Patent Office
Locations: Austin

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