Abstract: Plough apparatus comprising a wheeled support structure (10) that supports a plough beam (20) that is pivotable in a horizontal plane about the center of the support structure between first and second plough beam positions. The plough beam (20) carries a plurality of plough discs (50) or reversible mould boards (100) that are rotatable about a vertical axis between first and second ploughing positions corresponding respectively with the plough beam positions so that the plough apparatus can produce right or left hand furrows as desired.

Abstract: A steerable wheeled assembly for a vehicle such as a harvesting or windrowing machine of the type adapted to be drawn over crop rows in the ground is disclosed. The assembly includes rotatable vertical members and a horizontal axle member which are arranged in a "C" frame supportingly connected to the vehicle and which provides clearance under the axle. Ground engaging wheels rotate on stub axles which pivot in steering movement when the vertical members are rotated. Steering or pivot arms are mounted on each of the vertical members and are connected together by a tie rod. A fluid power actuated cylinder connected to one of the arms is used to pivot the arm and stear the vehicle.