Abstract: A row following drawn implement includes a transversely extended implement frame and an elongated hitch arm having a forward end adapted for connection to a towing vehicle and a rearward end connected to the frame for pivotal movement about an upright pivotal axis adjacent the rearward end of the hitch arm. A power source interconnects the frame and hitch arm for pivoting the hitch arm about its pivot axis. The power source is housed substantially within the confines of the frame to avoid interference with the mounting of tools and other equipment on the frame. A row follower senses transverse movement of the implement relative to a ground row being followed and is operatively associated with the power source to cause corrective steering movement of the implement frame relative to the hitch arm.

Abstract: A row following guidance device connecting the right and left ends of the forward portion of a row crop implement to a tractor will adjust the length of each left and right connection as the tractor deviates laterally from alignment with the crop rows to correctively guide the implement in alignment with the crop rows. A row following wheel signals a steering valve upon any lateral deviation of the implement from crop row alignment, the steering valve correcting the deviation by lengthening one connection between the tractor and the implement and shortening the other. The row following wheel is mounted for movement independent of the implement so that the implement may be raised or lowered without affecting the operation of the wheel.