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Steering Three-wheelers

10th May 1932, Page 60
10th May 1932
Page 60
Page 60, 10th May 1932 — Steering Three-wheelers
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A Re'sume' of Recently Published Patent Specifications

THE names of Karrier Motors, Ltd., IL P. Clayton, R. Dean-Averns, and P. Meek appear in patent No. 369,597, -which relates to a form of steering head for vehicles of the three-wheeled class. As will. be seen from the drawing, the head is mounted above the wheel, and spreads out into a fork on each side. Each fork is spanned by a spring lying parallel to the wheel, to the centre of which is attached the non-revolving axle.

The springs are mounted on eyes at the forward ends and pass between rollers at the rear ends. Motion from the steering wheel is transmitted by bevel gear and pinion.

A Self-adjusting Clearance Brake Device.

APPEARING in patent No. 359,068, which relates to a simple device automatically to adjust the amount of clearsnce in brakes when in the " off " position., are the names of Lockheed ,Hydraulic Brake Co., Ltd., of Leamington Spa, and G. Van Vestraut. The device appears to be particularly applicable ts hydraulic brakes.

Spring pressure being used to release the brake, it is necessary that some stop should be employed to regulate the distame to which the brake shoes can recede from their drums, so to any convenient part of the brake mechanism a rod is hinged which can slide within a, tube at the end of which is a slotted eye, the distance shown at A being the amount of clearance permitted, and always maintained.

It will be seen that the rod is provided with rings of a buttress type into which a block (B) is forced by a spring, or, as an alternative, the eye may not be slotted, but q space (C) may be provided which is equal to the desired clearance, the block (B) and its rod being able to move to that extent for clearance. Should the brake facings wear and the " on " position be altered, the rod can slip a tooth and readjust itself automatically for clearance.

Automatically Braking Uncoupled Trailers,

PATENT No. 369,702, by W. Cadney, No. 1 Stores Depot, Royal Air Force, Kidbrooke, relates to an arrangement whereby the brakes of a trailer become automatically applied when the drawbar is disconnected from the tractor and is allowed to swing downwards.

' The drawing shows the drawbar in the disconnected position, 1 representing the frame of the tractor in dotted lines, and 5 the drawbar which is mounted on the hinge (6) of the turntable (2), also shown in dotted lines. The parts connected with the present invention are shown in full lines, 3 being a lever, fulcrummed at 4 to brackets mounted under the turntable, and extending to the king-pin (9), which, when the weight of the drawbar rests on the end of the lever 3, is raised, and through the medium of the bell crank (11) applies the brake of the trailer.

An adjusting screw is shown at 7, so that the position of the drawbar when up can allow the brakes to be free.

The same device is also applicable to Ackerman steering gear. The use of such a device should entirely prevent accidents from a trailer breaking loose.

An Induction Pipe Governor.

THE names of Vauxhall Motors, Ltd., and H. Drew appear in patent No. 868,548, which relates to a governor that is controlled by the suction in the inlet pipe.

The specification points out that it is known practice in new engines to fit a washer at some part of the inlet pipe, to contract the passage so that, until the engine has been driven for a certain number of miles it cannot develop its full speed, but after the engine has been run in sufficiently, can be removed.

The present invention is considered an improvement on this, as it does not offer any obstruction to the passage of gases at low speeds. The device consists of a stem with a valve like head which normally drops below a washer inserted in the pipe, but when the speed of the gases rises above a pre-determined point, closes and slows the engine.

Tags

Organisations: Royal Air Force
People: G. Van Vestraut

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