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A SIMPLE AND EFFECTIVE TIP GEAR.

29th April 1924, Page 20
29th April 1924
Page 20
Page 21
Page 20, 29th April 1924 — A SIMPLE AND EFFECTIVE TIP GEAR.
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A New Mechanism which will Tip in all Three Directions, Trunnion-mounted Bevel Gearing Giving a Universal Action.

Ax'W side and end-tipping mechanism, which first saw the. light at the Roads and Transport Exhibition last autumn, is now available fee supply by the patentees and manufaeturers, F. Walters and Cu., of Albert Street, Rugby. As it is considered suitable for application to railway coal-trucks and to psesent advantages that would justify its use in that special connection, it. is correctly describer', as a " four-way" tipping mechanism, The body of a mechanical road traasport wagon or trailer rests by means of rocker brackets, upon four rockers secured to the frame of the chassis. The brackets are clamped down by pins, which are arranged to be held in position by hinged arms and springs. When any adjoining two of these pins are withdrawn, the wagon can be tipped to the opposite side or end, as required.

Novelty lies in the design of the tipping gear, which is so devised that it can rock in any direction, and will function correctly and properly in any position within its limits. This gear is of the screw-jack type, and a metal casing is arranged Antirely to enclose the screw and the gear and to protect them trurl dust andEmnd: For small load-I, hand-operating mechanism is provided, Lint, where the load ,s to be moved are heavy, there can be fitted a coupling to he engine with an automatic knock-out gear Our illustration'shows -the hand. opeicted type. From the plan and end, elevation it will ho seen that the jackscrew ends in a yoke, which is swivelled' a cross-member of the body frame. it is mad 'e teleseopic, the large. screw

engaging a nut firmly bolted to a bevel pinion, which turns on a ball-thrust bearing on the footstep of the gear. This footstep has a carrier shaft on,each side, carried in a square frame or cradle, and mounted upon one of the shafts is the crown wheel, which engages with the nut ! bevel pinion referred to,. and also with the driving' bevel pinion. The interaction of these three bevel wheels obviously permits the nut bevel pinion and the screw partially to rotate about the centre of the crown bevel, and the latter in its cradle to rotate about t Ii e centre of the driving bevel, thus giving the universal motion which will allow the load to be tipped in any direction.

The driving 'bevel is rotated by means of the hand 'mechanism, c o nC'ssisting of a cross'shaft with a worm and worm wheel. The rotation of the nut in one direction raises the load, and in the other lowers the body to a position of rest, -and, as the_weight rests upon a massive thrust ball bearing, two men can tin a six-ton load in three minutes without strain. The angle of tip. is approximately 45 degrees, and where the size of the wagon body permits, a plain screw is employed instead of one that telescopes. '

In order to throw the load clear of the wheels of the vehicle, the side boards are hinged at the bottom. and are limited in the extent of their 'opening by chains, which, in the case of large wagons, are led over pulleys and clown to drams mounted at each end of a spindle carried along the underside of the body. By means of a crank, the chains are let. out and both ends of the board lowered simultaneously, until the board stands at right angles to its former position. The load is thus caused to fall quite clear of the wheel-line. In the case of smaller wagons, the chains arc fastened at their ends, and are not wound on drums.

The gear is being made in three strengths—to deal with 30-cwt. loads, with three tons and with six tons. The 30-cwt. model is suitable for one-ton Fords and other vehicles, and is supplied complete with frame, rocking points and brackets for £55, including mounting. The wagon, gear and cab are supplied complete and ready to go on a Ford one-ton chassis for £70. • The parts are supplied ready for fitting, each partbeing numbered, and, for replacement purposes, interchangeability has been carefully studied. It is claimed that the complete unit can b9 assembled in about 12 minutes. When desired, vehicles can be equipped with the gear at the makers' Rugby works,

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