(under subclass 35) Apparatus in which a driven earth working element which normally travels in a given path or orbit with respect to a frame which supports said element is shiftable at the will of the operator back or forth in the direction in which the frame is moved across the ground to correspondingly shift the path or orbit.
(1) Note. The usual purpose of such shifting is to contact or to avoid contact with certain plants in a row while "chopping" out excess plants.
(2) Note. The shifting motion must be a rectilinear one substantially exactly in or parallel to the line of travel to come under this definition.
