Changes in Chaseside Six-wheeler
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IN opportune synchrony with the Ford Motor Show at the White City, London, the Chaseside Engineering Co., Ltd., Arterial Road, Enfield, announces modifications in the design of its detachable semi-trailer, produced for converting orthodox four-wheelers into articulated vehicles for 4-ton loads.
One point referred to in the report in our issue dated June 28, made after road testing such a six-wheeler, has been modified; the turntable centre, which was 4 ins, behind the centre line of the driving axle, is now slightly before the axle.
The other alteration affects the brakes of the trailing wheels. These are now of the overrun pattern. The transverse roller beneath the turntable is normally limited in its forward movement by two pivoted levers, fixed by a
spring-loaded book device. Application of the foot brake releases this hook at the same time as the driving-wheel brakes are applied. The roller naturally overruns the levers, which turn a
cross-shaft, this applying the trailingaxle brakes through a flexibly enclosed cable, which passes through the hollow king-pin.
The push-rod from the cross-shaft referred to is detachable at its front end by removing a pin, thus permitting the brake gear easily to be separated when the semi-trailer is being removed from the motive unit.
A pulley is interposed to equalize the brake-application pressure between the two trailing wheels, and separate application of these brakes may be effected by a hand lever mounted at the front end of the trailer.
In regard to the action of detaching the carrier unit, this has now been somewhat simplified by altering the ramps for the roller cross-shaft, which are considerably less steep than the ramps hitherto employed, thus eliminating the tendency to push the motive unit forward just before the front weight of the semi-trailer is taken by the jockey wheels.