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AUXILIARY BRAKES FOR FORD VEHICLES.

6th March 1923, Page 11
6th March 1923
Page 11
Page 12
Page 11, 6th March 1923 — AUXILIARY BRAKES FOR FORD VEHICLES.
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Details of the Worthmore and Miller Safety Devices

MANY epithets live been hurled at the hand brakes of the Ford van and ton truck. The makers have apparently intended that these should be used as emergency brakes only, and if used as service brakes they soon require adjustment, relining or the provision of new shoes. Many users, however, neglect these precautions, with the result that, of the many thousands of Ford vehicles in service, occasionally the hand brake is almost wholly ineffective.

This is a very unsatisfactory; state of affairs. Admittedly on the Ford vehicle the reverse gear can be used as a brake, in addition to the ordinary brake On the transmission, but it would certainly be preferable if another powerful brake were available. Particularly is this the case if the vehicle be equipped with a multiple gear, or if it is to be operated in hilly country. It is most disconcerting if it be necessary to stop a vehicle on a hill and it cannot be held by the hand-brake ratchet.

Two interesting types of auxiliary or master brakes have recently been devised, one by the makers *of the Miller gear, whose agents are G.W.I., Ltd., Imperial Works, Shea-kiln Road, Crouch End, London. N.B, and the other by the Worthmore Motor Co., of 34, Victoria Street, London, S.W.1. These brakes differ considerably in their method of application, but both can be, fitted either to the normal vehicle or to one provided with the Worthmore or Miller multiple gears. In the case of the Miller, the tubular torque member is out. at its rear end, and on to it is fastened the front plate of a special spider piece which carries the brake band and which is bolted to the worm 'casing. The brake drum. itself is mounted on the sleeve of the worm at the point where the propeller shaft is attached to the worm shaft. An interesting point is that, the brake parts are the same as those utilized in the Ford trans. mission, and thus spares are available almost, anywhere in the world. The operating lever is carried on the end of a shaft fitted with a face cam. Adjustment is effected by a nut at the end of this shaft, ana a coil spring keeps the ends of the band apart and tho lever in its " off " position when it is not being operated.

A feature of the brake is that the band can be inserted or removed through the gaps in the cover without dismantling any part except the camshaft.

The operating wire can be attached to the side brake lever or the foot brake pedal as desired.

This brake is supplied for the ton truck model only, and its price is £7 7s., plus the cost of fitting, which should not be considerable. If the brake be required in conjunction with the Miller gear, the price is £39. The Miller gear without the brake costa £33.

The Worthmore brake is even more simple, and does not necessitate cutting the torque tube. It can also be utilized on Ford vans or ton trucks. The brake Is known as the Worthmore-Thomas. It is of the simple band type, operating on the external periphery of the standard brake drums, and it is connected to the band-brake operating rod so that it can be used in conjunction with the ordinary hand-brake lever.

It is claimed that the Worthmore. Thomas brake can be used in ordinary 1v4 service apart from emergencies, and that, so used, it will greatly reduce wear on the transmission brake, etc. It actually offers a -friction surface of 3 ft. by 2 ins, to each back wheel in the case of the ton truck model, but perhaps its most important feature is the ease with which it can be fitted. To do this it is necessary to jack up the vehicle and remove the rear wheels, also the ordinary brake shoes. The rear spindle carrying these shoes must be replaced by a longer spindle supplied with the outfit, whilst the top bolt of the torque rod is replaced by the original. rear spindle bolt. The steel brake band is supported by a special bracket held in position by the new spindle and existing bolts, and it can quickly be removed for relining. Adjustment is effected by screwing up the nuts at the top of the bands until the wheels are nearly locked when the hand-brake lever is in the vertical position.

Adjustment for wear in the axle shaft bearings is provided by a slot at the top of each bracket. When wear occurs the band spindles are raised in these slots.

Small angle brackets, one at the rear and the other on the bottom torque rod bolt, are set in line with each steel brake band to allow the small springs to work properly and to keep the band free of the frame.

The price of this brake for the Ford van is £3 3e. per set, and for the Ford truck 24 10s. per set.

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