Abstract: Agricultural tractor hitches sometimes employ sway blocks fixed to opposite sides of the tractor frame which can co-act slideably with two lower hitch links as these are pivoted by a power lift mechanism. The blocks prevent lateral movement of an implement attached to the lower links when in raised transport position and optionally when in lowered working position. To permit minor adjustment and compensation for wear in the co-action between the blocks and the lower links, pads are secured to the lower links and arranged to co-act slideably with the respective blocks, each pad being tapered lengthwise of its associated link and being adjustable in position lengthwise of its associated link.

Abstract: Tractors often have front ballast weights to counter-balance rear-mounted implements. These weights are usually contiguous parallel cast plates disposed in longitudinal vertical planes. Transversely aligned recesses are often provided in the front edges of the plates to form a towing mouth, and complementary semi-cylindrical grooves in the side faces of the plates form cylindrical holes intersecting the towing mouth, one such hole containing a hitch pin. Side loading is transmitted back to the weakest section of those weights carrying the hitch pin; and the hitch pin is a loose fit in its hole because the latter is formed by cast grooves. To avoid these disadvantages, the grooves are omitted and a clevis fitted partially within the recesses is clamped to the tractor frame by bolts passing through longitudinal holes in the respective weights and has upper and lower jaws with vertically aligned machined holes for the hitch pin.

Abstract: Agricultural tractors having variable-track wheels for working in different conditions, particularly in row-crops, are known. The track-width of their driving wheels has sometimes been made power-adjustable by fixing brackets having respective grooves on the periphery of each hub and releasably clamping the brackets to respective helical rails fixed inside each rim and engaging the grooves. Due to the increasing size and power of tractors, and also to eventual wear of the components, it is difficult to achieve effective clamping. In an attempt to solve the problem, shims have been inserted where necessary between the brackets and the periphery of each hub. It is now proposed to solve the problem more positively by providing at least some of the brackets of each wheel with screws by which the brackets so provided can be adjusted in position radially of the hub before being fixed thereto.