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Why Not an Anti-reverse Device ?

14th December 1945
Page 20
Page 20, 14th December 1945 — Why Not an Anti-reverse Device ?
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Which of the following most accurately describes the problem?

WE were recently talking to a road-transport engineer who is responsible for one of the biggest fleets in the country, when the question of the braking of the heavier types of machine was raised.

He was not so concerned with the direct efficiency of a braking system, as we were in full agreement that stopping distances, to-day, were reaching the maximum figures possible. What he was concerned about, however, was the inability of a driver to do anything about it if, through missing a gear and not being really snappy with the brakes, 18 or 20 tons of vehicle and load decided to reverse direction.

This led to a suggestion for the fitting of some device which would come automatically into action when the vehicle commenced to roll back' wards. It seems to us to be a point which should receive some attention, although we are well aware that the idea is far from new.

It could be in the form of a large and substan, tial ratchet wheel mounted on a brake drum, the pawl itself falling into position immediately the vehicle commenced to run backwards. This pawl should be so interconnected with the gear lever that when the driver wished to reverse the pawl would be m4ade inoperative. A jamming-roller type .of free wheel-might also meet the requirements, if it could be released an reversing.

We put this forward fot the consideration of vehicle makers, as we feel that such a device would give drivers who operate in hilly dictricts with heavy loads a feeling of greater confidence. A further point is that it would assist the getaway after the driver had occasion to pull up on. a stiff gradient.

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