A Large-capacity Machinery Carrier Garner-Carrimore I2-ton Articulated Machine with Detachable
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Rear Axle, which Gives an Uninterrupted Platform Space 14 IL Long SOlVIE months ago, an interesting 9ton semi-trailer, with a novel type of detachable rear axle, was built by Carrimore Six Wheelers, Ltd., North Finchley, London, N.12, for Gaitermoles (Transport), Ltd., and was described in this paper dated May 15 last. It has resulted in a repeat order being placed for a similar but larger vehicle, incorporating several improvements, an illustration of which appears on this page.
Designed to carry 12-ton loads, the new machine has a main platform 18 ft. 8 ins, in length, and *affording a space of 14 ft. between the vertical face of the cranked part and the front of the rear wheels. This is a big advantage from the point of view of easy loading and unloading, and could be accomplished only by employing a very short tractive unit. For this reason a Garner 040 tractor model, which is based on the maker's 6-ton chassis, was chosen, for it has a wheelbase of only 7 ft. 9 ins.
The wheelbase of the semi-trailer is 20 ft. 3 ins, and the complete outht weighs, unladen, 5 tons 11 cwt. It has two trailing wheels, shod with 13.5 by 20 tyres. Almost flat, the rear springs, which are mounted outside the frame, do not protrude above it, in fact the longitudinals are cut away to clear the axle which passes above them. Each spring carries a hinged clip in which the axle is held. This feature we described in our previous report. The lower part of the frame has four 0in, by 3-in, main channels. Cheek plates are fixed only to the outermost of the side members; were the inner longitudinals similarly suspended, the movement of the driving wheels, relative to the trailing unit, would be restricted.
Instead, vertical channels are employed, which allow plenty of room in front, To relieve these of the full stress imposed, the cross-member hung from the outer plates is designed to function as a bridge. It is a built-up girder, and has an effective depth of 13 ins.
The semi-trailer is equipped with Dewandre twin-cylinder vacuum brakes, operating shoes in 18-in, drums on the
trailing wheels. F. and J. vacuumservo brakes are used on the Garner.