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A Sliding Roof

5th January 1932, Page 49
5th January 1932
Page 49
Page 49, 5th January 1932 — A Sliding Roof
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with special air outlets

CONSEQUENT upon the interest aroused by our centre-pages' article in the issue dated December 22nd, 1931, we have been given details of the special ventilating system which is embodied in the sliding roof for commercial vehicles which is made by Weathershields, Ltd., 48, Moor Street, Birmingham.

• Obviously, the sliding roof in its " open" position provides the means for -ingress'and egress of fresh. air. In wet weather, however, the roof has to be closed and, in these circumstances, with most designs of sliding roof, no egress is ...provided for the foul air at the highest :Debit of the Vehicle or cab.

A particular feature of the Weathershields design, but one which is not apparent to the casual observer, is shown in a sketch reproduced herewith. It will be noticed that there are vent apertures provided in the longitudinal rails of the sliding portion of the roof. These are concealed by reason of their opening into the channels which also form the water gutters. From the interior of the vehicle air passes upwards and over the longitudinal metal rails, then passing through the apertures named into

the gutters, from which, of. course, it has a free exit.

It will be realized that there is no risk of rain entering because, so long as the metal tails are of a suitable height, water cannot pass over them and into the body. The apertures are not visible either to the passengers or to those outside the vehicle, but give a natural outlet to vitiated air.