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Patents Completed.

14th October 1909
Page 20
Page 20, 14th October 1909 — Patents Completed.
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Complete specifications of the following patents will be sent to any address in the United Kingdom upon receipt of eightpence per copy at the Sale Branch, Patent Office, Holborn, W-C STEERING WHEELS.—Joseph Sankey and Sons, Ltd., and Another.—No. 20,145, dated 25th September 1908.—The object of this invention is to reduce tie: cost of hand wheels and particularly of steering wheels. To this end, the wheel is made in halves, each of which is stamped from sheet metal. 1.he halves are then welded at. their edges by means of the acetylene or the electric-weldinc process.

DOUBLE-ACTING INTERNAL-COMBUSTION ENGINE.— Nicholls.— No. 8,012, dated 3rd April, 1909.—This invention relates to four-cycle internalcombustion engines of the double-acting type, and has for its object to construct an engine of this type which is compact in form and as light as possible. A vertical cylinder is provided with a combustion chamber at each end. the lower cembustion chamber having a stuffing box for the piston rod. The piston rod extends through and is scared to a hol

low piston and terminates in a slide in which is mounted a sliding block that accommodates the crankpin. The inlet valves are arranged at one side of the cylinder in a vertical tubular passage which communicates with the carburetter, and the exhaust valves are arranged at the opposite side of the cylinder. The exhaust valves are operated by an arm

which has an enlarged portion against which the sterns of the exhaust valves hear. This arm is operated by means of a suitable rod which carries an anti-friction roller engaging a cam carried by a shaft that is suitably geared to the crankshaft.

DETACHABLE WHEEL.—Pugh.-No. 9,033, 1909, dated 1st July, 1908.— The permanent hub is cup-shaped and suitably formed to embrace the outer races of the ball hearings, the innerrace rings of which are carried by the axle. The hub of the detachable wheel is also suitably shaped, so as to slide over the permanent hub. A locking ring is provided which screws on to the end of the permanent hub, and has a flange that abuts against the inturned edges of the hub of the detachable wheel. The hub of the detachable wheel is also provided with a flanged ring which is made rigid by passing the spokes of the wheel through the latter. The flange of this ring is interposed between the flange of the locking ring and a nut or ring that is screwed on to an external screwthreaded portion of the locking ring. Thus it will be seen that the locking ring may be removed without detaching it from 'the hub of the detachable wheel. Any convenient spring pawl may be used to hold the locking ring in position.

MOTOR-DRIVEN PLOUGH.—Darby. —No. 24.820, dated 18th November, 1908.—This invention relates to motordriven, agricultural machines, and it has for its object to construct such a machine so that nearly all of the power produced by the motor will be used in cultivating the land. A frame carrying the motor is provided with front driving-and-steering wheels and a single rear wheel, arranged on the centre line of the veld ele. At the rear of the vehicle, a Vshaped frame is supported, and on this are mounted endless chains which carry pleughs or other tools. These chains run on sprocket wheels that are so inclined that, as the tools leave the ground, they are held clear and are thus prevented from dropping dirt on to the chains. The sprocket wheels are driven by the motor throngh suitable gear. The frame is provided with adjustable shoes, by means of which the depth of the work can be regulated.

AN. IMPROVED BALL BEARING-The Deutsche Waffenund Munitionsfabriken.—No. 16,066, dated 6th August, 1908.—This ball bearing comprises an inner-bearing ring, a cage carrying the balls and a stationary outer-bearing ring. The outer ring, however, does not form a complete ring but is cup-shaped. The race groove of this cup-shaped outer ring is concentric with half the circumference of the race groove of the inner ring ; it then passes off tangentially, thus ensur ing the ball entering the race groove without shock. If desired the inner ring can be split to facilitate the fitting of the bearing.

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