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Patents Completed.

15th August 1912, Page 22
15th August 1912
Page 22
Page 22, 15th August 1912 — Patents Completed.
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Keywords : Clutch, Drive Shaft

A Steady Indicator.

C. Eugene van Auken, No. 27,383, dated 6th December, 1911.—This invention provides a sight tube in which the indicator finger is not affected by oscilla

tion or the jolting of the vehicle carrying the tank or container to which the sight tube is connected. The invention may be used in connection with petrol tanks on motorvans as shown in one of the figures of the drawing. The tank is provided with a helical tube situated in approximately the centre of the tank, and this helical tube is connected by a -conduit hidden by the framework of the van to the sight tube which is carried as usual on the dashboard. This conduit is normally filled with air, but the sight tube is provided with some suitable -liquid which is moved up and down in the sight tube by the air in the conduit. As shown in the drawings, the sight tube is provided with an extension which reaches nearly to the bottom of a reservoir containing the indicating liquid. The conduit opens above the surface of this indicating liquid, and thus, as the petrol in the tank falls, the pressure of air in the conduit also falls, and thereby lowers the level of the indicating liquid in the sight tube. It will be seen that tipping of the container or of the sight glass will have practically no effect on the indication given.

A New Resilient Tire.

J. Bartlett and A. E. Collett, No. 20,730, dated 19th September, 1911.— This resilient tire is provided in Its interior with a series of metal tubes which may be arranged to give in section an .arch-shaped contour as shown in the figure. Inside the group of metal tubes

is a central passage extending around the tire which may be inflated with air or provided with an inner tube in the usual manner. An Outside Searing.

W. J. and A. McBain, No. 16,348, dated 15th July, 1911.—According to this invention the crank-shaft bearings on an engine are arranged externally to the crankcase; the figure shows the invention as it is applied to a two-cylinder engine. The bearing is situated between the two crankcases. At the places where the crankshaft passes through the walls of the crankcases, the shaft is slotted or provided with two collars between which enters a flexible washer. This washer protects the bearing on the shaft from the pressure existing inside the crank case, so that the lubrication of the bearing is not in any way interfered with by such pressure. At the same time the bearing is readily accessible for inspection.

A Constant-mesh Speed Gear.

E. S. Bond, No. 15,911, dated 10th July, 1911.—This invention relates to a change-speed gear in which the position of the gearwheels is not altered. The operating levers controlled by the driver are connected to two sleeves. These are fitted with balls, which, together with flutes in members carried by the shaft, constitute clutches. In the position shown

in the drawing, a direct drive is obtained. A sleeve at the right-hand side of the figure, which is keyed to the driving shaft, is coupled through the ball clutches to a member keyed to the driven shaft. To obtain the other speeds, and also the reverse, the gearwheels on the layshaft are employed, various sleeves on the mainshaft being coupled up by the sliding clutch-members.

A Sell-starting Apparatus.

'Unterberg and Helmle, No. 2864/1912, dated under the International Convention, 17th July, 1911.—According to this invention, a spring is utilized to start up the armature shaft for producing an igniting spark in the cylinder under compression, when it is desired to start a car. The spring is carried between two clutch members, and is wound up when

the speed of the engine falls below predetermined figure. The spring thus wound up, is released by a controlling cord pulled by the driver, and it imparts a preliminary rotation to the armature shaft. When the engine is running at normal speed the ball shown in the figure will, by centrifugal force, be at the extremity of the slot in the right-hand clutch-member. When the speed of the engine falls, however, the ball will move inwards, and, by engaging with a projection from the stationary casing, prevent further rotation of the right-hand clutch-member. The left-hand clutchmember will, however, by reason of inertia, continue to oscillate slightly until a spring pin carried by it slips into a slot in the right-hand clutch-member. This continued rotation of the left-hand clutch-member winds up the spring, and by reason of the engagement of the spring-pin in the slot aforesaid, the spring will be kept wound up until released by the driver's controlling cord. When the two clutch-members have been coupled together by the spring-pin, the recess in the left-hand clutch-member shown at the top of the figure, will be opposite the ball, which will then pass into this recess and unlock the righthand clutch-member from the projection of the easing.

A Vulcanizer Press.

E. C. R. Marks (Toledo Computing Scale Co.), No. 15,650, dated 5th July, 1911.—This specification describes a press for vulcanizers, particularly such as is used for putting patches on tires. The pressure plates are carried by rods mounted in a pivoted framework so that they may be adjusted at an angle.

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