(under subclass 439) Apparatus in which there are means for holding an earth working element in different locations laterally of the line of draft or the propelling means.
(1) Note. Merely varying the limits to which an earth working device may laterally sway is not included. See subclass 450 for such apparatus.
(2) Note. The lateral adjustment may be the result of movement about a vertical or a longitudinal axis with respect to the propelling means.
(3) Note. A lateral movement of the earth working tool which is the result of a turning movement of the propelling tractor is not included. See subclass 450 for such devices.
SEE OR SEARCH THIS CLASS, SUBCLASS:
456, for apparatus liftable on a wheeled frame by means other than a mast-type hitch in which a central group of earth working elements is lifted vertically and side groups are movable inwardly. 459+, for an earth working element lifted vertically on a wheeled frame by means other than a mast-type hitch and by swinging movement about a longitudinal axis.
476+, for an earth working element liftable on a wheeled frame by means other than a mast-type hitch and laterally adjustable.
741+, for a laterally adjustable earth working element.
SEE OR SEARCH CLASS
280, Land Vehicles,
467+, for a vehicle train wherein the interconnected vehicles are laterally or angularly adjustable relative to each other.
