To Avoid Frozen Screens and Driving Blind
Page 33
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EVERY possible measure to prevent aoeidents on the road and to aid the maintenance during winter and black-out of transport time schedules needs to be adopted. In normal state, the glass of the windscreen absorbs a material proportion of the small aniount of light available at night. When it loses transparency as the result of deposits inside or out, the position is infinitely worse.
One of the most trying conditions with which drivers have to contend is when ice forms on the glass. The wiper blade. skates over it ineffectively whilst inside it reappears almost as quickly as one can rub it off. Thus, devices to obviate this nuisance fill a real want.
The Air-Flow De-Froster, marketed by Clarence R. Foster, Ltd., Cardigan Road, Leeds, 6, is an instrument of this descripion which has just been introduced. Having a bakelite body and rubber, suction cups at its 'ends, it is designed to be attached to •the, glass—on the inside, of
course at the bottom of the screen.
Extending for the length of the de-froster is a nickelchrome spiral heating element. This is shielded laf a metal strip, which prevents heat from being radiated directly on to the glass and promotes an upward current of warm air.
A switch is incotporated and the device is intended to be connected up in the ignition circuit, so that it cannot he Inadvertently left switched on after the engine has been switched off. Two models are made--for 12-volt and 6-volt systems respectively—and the price is one guinea.
Neat and well constructed, the Air-Flow De-Froster is claimed to have a low current consumption, to be highly effective, and to have no deleterious effect upon the screen.