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Complete specifications of the following patents wilt be sent to any address in the United Kingdom upon receipt of eightpence per copy at the Sales Branch, Patent Office, Holborn, W.C.
GEARS.—De Dion and Bouton.—No. 15,558/08, dated under Convention 18th January, 1908.—This invention relates to improvements in bevel gearing and provides means whereby all side thrust on one of the gearing wheels is taken by a member that is secured to the other wheel so that the bearing of the latter wheel has no end thrust upon it. This arrangement is particularly ap
plicable to the differential gear on motetvehicles, and it is illustrated as applied thereto. The driving shaft, on which the driving bevel pillion is mounted, extends beyond the pinion and carries on its extended portion a bevelled roller, mounted on ball bearings. The driving bevel meshes, in the usual manner, with the driven bevel wheel, to which is rigidly secured a bevel ring. This bevel ring bears against the bevel roller at a point on the latter which is diagrammatically opposite to the driven bevel wheel. Thus it will be seen that the thrust, due to the meshing of the two bevel wheels, is balanced by the roller on the shaft of the one bevel bearing against the ring that is rigidly secured to the other bevel wheel, and, therefore, there will he no end thrust on the bearing of the latter bevel wheel.
SUSPENSION.—Walton.—No. 25,747, dated 28th November, 1908.—This invention relates to suspension arrangements wherein air tubes are interposed between the frame of the vehicle and the axle, and has for its object the reduction of the size of such telltubes without diminishing their resiliency. The air tubes are disposed between brackets carried by the frame of the vehicle and the axle, and these tubes communicate with an air re servoir. The frame is also connected to the axle by means of a pair of single-leaf spr ngs, and the object of these is the prevention of undue lateral and Jongitudinal movement of the axle relatively to the frame. A pressure gauge and a relief valve are provided on the reservoir, and an air pump, which is driven by the engine, supplies air to the reservoir. The relief valve is so adjusted that it will liberate the air within the reservoir when the pressure becomes excessive due to large vibrations, thus permitting greater deflections of the air tubes; the pressure is re-established by means of the air pump.
STARTING ARRANGEMENT FOR INTERNAL-COMBUSTION ENGINES. —Clement.—No. 188/09, dated under Convention 17th September, 1908.—This invention relates to means for filling the cylinders of an internal.combuatien en gine with an explosive charge when starting up, without having to overcome the resistance due to compression. A compression cock is provided which has, in addition to the usual plug, two springcontrolled ball valves, one of which acts to permit the escape of gas from the cylinder and the other acts to allow air to be drawn into the cylinder. The arrangement is as follows. On starting the Engine the compression cocks are opened; these put the cylinders into communication with the ball valves, air in the cylinder will be free to escape, and air will be permitted to enter the cylinder when the inlet valve is closed. When, however, the inlet valve is open an explosive charge -will be drawn from the induction pipe, owing to its presenting less resistance than the spring-controlled ball valve. When the cylinders are full of explosive mixture the compression taps are closed. It will be understood that during this time the ignition system will be interrupted and, on the compression being closed, it is again brought into operation.
DRIVE FOR FAN AND WATER PUMP.—Clarkson and Another.—No. 15,566, dated 22nd July, 1908.—This mvention relates to an improved means for driving the fan and pump on a motor vehicle from one of the steering wheels. Secured to the hub of one oi the steer ing wheels is a toothed wheel that gears with a pinion, the spindle of which is mounted in ball bearings carried by a bracket that is secured to the vertical shaft about which the steering wheel turns, so that, whatever the position of the steering wheel may he, the pinion will constantly be in mesh with the toothed wheel. The spindle of the pinion is connected, by means of a short shaft and universal joints, with bevel gearing enclosed within a suitable casing' that is supported from the chassis. One end of the driven shaft of the bevel gear carries a sprocket wheel, by means of which the fan is driven, and the other end of this shaft is connected with the water pump ; thus a convenient anct compact arrangement is provided for driving the fan and the water pump from the steering wheel.