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BUSES TAKE TO HEATED
Page 64
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SCREENS By Ashley Taylor ELECTRICALLY heated screens for buses and coaches may well prove a major feature at the 1968 Commercial Motor Show. Following the acceptance of the electrically heated screen for some expensive cars, the Triplex Safety Glass Co. Ltd., has introduced heated screens suitable for passenger vehicles (CM, May 5), and some are already in use in the North.
Mr. J. H. Wood, Stalybridge, Hyde, Mossley and Dukinfield Transport Board general manager, told me that screens of this type had been fitted to several single-deckers in its fleet. After a few weeks of winter use they appeared to be successful so far.
The SHMD fleet of 91 buses includes 12 single-deckers, nine of which are suitable for one-man operation. As part of a move towards o.m.o. the undertaking decided to try out the Triplex electrically heated screens. These have been fitted to single-deck open saloons so as to step-up demisting power where the misting trouble is at its greatest. Mr. Wood emphasized that so far as the Board is concerned a longer test will be necessary before the electrically heated screen can be regarded as out of the experimental stage. Drivers were asked for comments and there had been no complaints.
De-icing Other Northern operators who are trying out the screens are particularly interested in their de-icing capabilities, since the action is speedy and, especially after a vehicle has been standing, ducted warmth might be better distributed elsewhere. One driver said the screen had greatly improved comfort and eased working.
Either flat or curved screens are available. They are built up with two layers of glass with the heating wires in the centre. The wiring is different from the form employed in car rear windows. In between the two glass layers are crimped wires coated with a non-reflective preparation, to prevent any interference from outside light.