GB188308A - Improvements relating to carriages composed of a fore-carriage and a trailer - Google Patents

Abstract

188,308. Schneider et Cie. Oct. 29, 1921, [Convention date]. Couplings for road vehicles.-In an animal- or tractor-drawn road vehicle comprising fore- and rear-carriages connected together to allow relative rotation in any plane, the weight of the forecarriage and draught pole is balanced by an elastic buffer arranged between the forecarriage and a point on the pivotal connection between the fore- and rear-carriages, the buffer acting obliquely with respect to the plane of the forecarriage chassis. As shown in Figs. 3 and 5, the axle B of the forecarriage A carrier a sleeve F formed with upper and lower trunnions E mounted in a bracket G which is pivoted to the chassis C on a longitudinal pivot H. The draught pole D is fixed to the forecarriage A. The buffer consists of a spring I bearing at one end against an abutment J pivoted at j to the lower trunnion E, and at the other end against a washer E on an adjustable sleeve M carried by a rod N ball-jointed at n to the forecarriage A. The washer K slides in a cylindrical guide L and the rod N terminates in a head n<1>. Two such buffers may be arranged symmetrically about the central longitudinal axis of the vehicle; and the buffers, instead of being connected to the chassis beneath the axle B, may be connected thereto above the axle, the spring being arranged in tension. A known method of balancing the weight of the forecarriage A and draught pole D is shown in Fig. 2. The weight of the chassis C, which is connected to the forecarriage by a king-bolt a<2>, tends to keep the forecarriage in such a position that the supports a, a<1> normally bear against the chassis.