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An Independent-suspension System by Austin

10th August 1945, Page 36
10th August 1945
Page 36
Page 36, 10th August 1945 — An Independent-suspension System by Austin
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Keywords : Gear, Suspension

ATENT No. 569,492 comes from J. Haefeli and the Austin Motor Co., Ltd., both of Longbridge Works, Birmingham, and gives details of an independent-suspension system. The chief feature of the scheme is its geometry, which permits the rise and fall of the wheel without change of angle.

The drawing shows the outline of a front-wheel suspension system, accord

ing to the invention. The resilient members are a pair of torsion rods (1 and 2), which are pivoted in frame brackets, and each carries a link (8). The two links meet on the ends cf a short lever (4), which is made in one piece with the stub axle. It _veill be seen that, whilst the axle can rise and fall freely, it is confined to movement in one plane. The torsion rods are not a necessary part of the scheme; a coil spring, located between frame and stub axle, may be used instead. If used for a rear suspension, lever 4 would he rigidly attached to the back-axle casing.

LIGHT-ALLOY SUB-FRAME FOR TIPPING BODIES

THE stresses involved in tipping a heavy load call for sturdy, steel longitudinals and cross-members, all of which subtract considerably from the

pay-load. To improve matters in this respect is the object of a light, yet 'strong, construction shown in patent No. 569,378, by V. Bourne-Vanneck, 25, Primrose Hill Road, London, N.W.3. This inventor descr'bes a subframe built from lightalloy sections welded into a one-piece structure.

The longitudinals comprise a large tube (1) and an outer pair of smaller ones (2). The tubes all pass through a series of channel section cross-. members (3) and, when all joints are welded,._ the assembly is converted into trussed-beam unit. The outer tubes are arranged to come over the mainframe members, so that pivot-plates (9) can be

conveniently located. If necessary, a thickened pressure-plate can be provided at the point where the ram force is applied. The patent also covers the use of the scheme for the main frame of a vehicle. • AN INFINITELY VARIABLE GEARBOX

INFINITELY variable-geats can usually be classified into certain types, and one shown in patent No. 569,369 comes in the class which converts rotary motion into oscillating motion and back again, after the ratio ....variation has taken place. The inventor is G. Dessonaz, 1, Rue Gachoud, Fribourg, Switzerland.

The drawing shows the basic mechanism upon which the gear works; a central driving shaft is provided with a hub (1) which drives, via a compression strut (2) and a jamming-roller free-wheel, the outer drum, In the left-hand drawing, the hub is centrally located and drives the drum at its own speed.

T a hub, however, is displaceable from the centre, as shown in the right-hand view, by means of a lever (3), and when this occurs, it drives the outer drum at a varying speed, faster and slower alternately. For approximately one-sixth of a circle, the drum is rapidly driven, and by making a group of six units in parallel, -this high speed becomes the output speed, the free-wheels working during the individual low-speed periods.

The unit is thus a speed' increasing gear, and can give an output Of approximately one-and-a-half times the input speed. The complete gearbox contains a duplicate group, so that an overall increase of up to 2i to 1 can be obtained. THERE are many purposes for which • J. a quickly detachable nut is useful, particularly when a long thread has to be frequently traversed. For use in this respect, a slide-or-screw nut is shown in patent No. 569,359, by E. Walker and H. Elsden, 4. Spa Road, Gloucester.

Referring to the drawing, the nut is provided with the usual tapped hole, hut cutting across it, at an angle, is a plain clearance hole (1). The nut can be slid on in the angular position; and,

when rocked to the vertical, the threads are brought into engagement, after which it can be tightened in the usual way. An annular recess (2) permits clearance around the intersection point of the two bores.

SMALL-CRYSTAL STRUCTURE BEARING ALLOY

WHEN viewed under a microscope, VY most bearing alloys are seen to consist of a soft network, or matrix as it is called, in which are embedded crystals of the harder metal used in the alloy. According to patent No. 569,349, the smaller these crystal: are, the better the bearing. • The patentee, E. Feuer, 9, Vicarage Gate, London, W.8, states that a fine

grain can be produced in any of the usual lead bearine° alloys by the addition ofa small amount of sodium to the melt. A typical alloy mentioned contains the following ingredients:— Tin 10, antimony 9.5, copper 1.8, arsenic 1.2, cadmium 1.7, sodium.01 and a balance of lead up to. 100 parts. The inventor . states that experiments have been carded out, both with and without the sodium, and the results were in favour of the addition.


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