Simple Load-clamping Device
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New Semi-trailer from Carrimore
ANEW and inexpensive type of loadclamping mechanism has been fitted to the latest semi-trailer made by Carrimore Six • Wheelers, Ltd., North Finchley, for The Metal Box Co., Ltd. Earlier Carrimore trailers incorporated adjustable roofs, which were wound down on to the load, but the latest system consists of two longitudinal cross members running along the length of the roof. These are lowered by hand and are quite sufficient to hold the load securely during transit.
The mechanism is driven by a detachable handle from • the nearside of the ,unit through bevel gears and allenclosed endless chain running in steel. tubes to screw shafts fitted at the front and rear of the trailer. At the top of the screw shafts are flush-fitting transverse cross members, actuated• by trunnion nuts, to which are attached the clamping bars. The transverse cross members are kept level by twin rollers and provide an adjustment on the clamping bars of I ft. 6 in., the Maximum top position being flush with the roof bearers, Finished in Metal Box standard colours, the body consists of light-alloy panels and wooden roof bearers. The fore and aft bulkheads are lined with light-alloy on the outside and steel sheeting on the inside. During transit, the body is
enclosed by canvas curtaining running on Coburn track and trolleys.
The trailer, which weighs 9 tons, is fitted with hinged steerable jockey wheels and is attached to the Seddon trailer via a Carrimore fifth-wheel coupling. The overall length of the outfit is 35 ft., and the width is 7 ft. 6 in. Other specifications
are: loading height, 4 ft.; laden height, 14 ft. 2 in.; side opening height, 9 ft. 6 in.: inside body length, 26 ft. 6 in.; and trailer wheelbase, 19 ft. 8 in. The unit is fitted with tub 7.50 x 20 12-ply tyres with Girling brakes operated by upright
vacuum. Semi elliptic springs are employed on the trailer axle.