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Patents Completed.

31st August 1911, Page 18
31st August 1911
Page 18
Page 18, 31st August 1911 — 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.

BACK AXLE.—Jaubert and Ravel.— No. 2,905 of 1911, dated under Convention 5th February, 1910.—In this specification there is described a method of mounting a back axle so as to transmit the thrust of the driving wheels to the chassis and yet leave the axle free under the action uf the springs. A double thrust bearing is provided at the rear end of the cardan shaft, and this is arranged in the casing surrounding the differential. A similar bearing is provided, on the other side of the cardan joint, which transmits the thrust from the shaft entering the gearbox to the chassis. The torque of the back axle is compensated by the cardan shaft and a tube, the end of which is provided with a suitable bearing for the shaft.

SPEED GEAR.—Daimler (Unterttirkheim)—No. 15,989 of 1911, dated under Convention 12th July, 1910.—A changespeed gearbox is described and illustrated in this specification. The driving shaft on the left-hand side has fast on its em] a gear-wheel. Inside this wheel are provided bearings for a spindle carrying a number of slidably mounted gearwheels and also a pinion attached to the spindle.

A second spindle is provided in line with the driven shaft and this has fast on its end a gear-wheel meshing with the pinion, and forming a bearing for the second spindle. The highest speed is obtained by clutching the first spindle direct to the driving shaft and thereby transmitting the drive through the pinion on to the driven shaft. Other speeds are obtained by driving the second spindle by the fast gear-wheel and driving the first spindle by the required combination of gear-wheels from the second spindle.

DETACHABLE WHEEL.—Lanclester.—No. 18,630, dated 8th August, 1910. —This invention relates to detachable wheels of the kind in which the complete wheel with its hub and contained bearing forms a detachable unit. The construction employed contains at once the essential bearing and keying elements, so as to enable the wheel to be either a driving or a steering wheel. The elements are so arranged that they will either engage or remain idle according to the manner in which the wheel is applied. The drawings reproduced show the wheel applied in the one case to the driving axle and in the other ease to the steering axle of a vehicle. The hub contains two ball bearings, and these are referred to as the inner and outer bearings re

spectively. The inner bearing is of larger diameter than the other bearing, and in the space between the two bearings keyways are cut, or other provision Is made, to convey the torque from the driving axle to the hub body. The difference between the diameter at the keyways and the bored diameter of the hub is less than that between the bores of the inner and outer bearings, so that the keys or other castellations with which the

driving axle is fmnished, can pass freely through the inner bearing when the wheel is being placed in position. The steering axle is not fitted with keys but is turned smaller than the bore in the hub, so that when the wheel is fitted to the steering axle there is no driving connection. When the wheel is fitted to the driving axle, the inner bearing takes its seat on the end of the axle frame, a turned snout being provided, and thus it forms a main axle bearing ; the outer end of the axle is turned with a clearance and the wheel is centred on the keystayed portion, so that the outer bearine is inoperative. The selective method of fixing the wheel, i.e., so that the parts can automatically perform the required functions according as the wheel may be applied to the driving or steering axle. consists in the use of special securing nuts for the steering and driving axles. these nuts having, if desired, different diameters and pitches to ensure the correct one's being used.

RATCHET TOOL FOR USE AS A SPANNER, A DRILL OR A LIFTING JA CK.—Adams.—No. 18,329, dated 3rd Auguste 1910.—This specification describes a ratchet head which may be adapted to operate with a spanner, drill, or a lifting jack. The fittings are so contrived that one handle operates them all, this handle having a head in which is carried a toothed wheel. This toothed wheel is revolved in either one direction or he other within the head by means of two spring-operated pawls. one on each side of the wheel, and either one or the other being used as required.

The centre of the revolving portion is preferably made with a square tapered slot in one side, and therein the square

head of any tool may he fitted. In the other side there is formed a socket of hexagonal or other form which can be used as a box spanner for nuts and which may receive suitable fitments to enable the tool to operate either with a drill or a lifting jack.

CARBURETTER.—De Veulle.—No. 21,900, dated 21st September, 1910.— This invention relates to carburetters of the kind in which a large variation of mixture can be obtained by the operation of a single controlling device. In the construction described and illustrated in this specification, a hollow chamber is arranged transversely to the induction pipe and in the lower part of this chamber a number of fuel jets is arranged. The sides of these jets are bevelled and two slides are provided, which can be

raised or lowered in the chamber. That one illustrated on the right is arranged on the engine side of the jet and constitutes the throttle. When it is in its lowest position, it is close to or rests on the jets and closes the passage to the engine. The other slide, which controls the air inlet to the induction pipe, has suitable ports provided in it to direct the flow of air. It is stated that frequent regulation of this slide is found to be unnecessary. A feature of this carburetter is that, when the throttle valve is nearly closed, the gas. is small in quantity but very rich owing ta the rapid flow of the air across the jet. In another form of construction, the actual holes of the jets are relatively large, a suitable constriction of predetermined size being introduced in the channel from the float chamber to the earburetting chamber.

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Organisations: Patent Office
Locations: Unterttirkheim

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