Fully mounted variable width plow

A fully mounted plow system adapted to be mounted on and pulled by a tractor, said system comprising a hitch assembly including link arms adapted to be supported by the tractor at their forward ends such that they are capable of slight pivotal displacement about vertical axes, a forecarriage unit mounted on the rearward ends of said link arms such that a slight pivotal movement about vertical axes are permitted therebetween, an elongated plow beam extending generally in a horizontal plane and inclined to the direction of forward travel, said forecarriage being pivotally attached to said plow beam about a generally vertical axis, a plurality of plow bottom assemblies each including a support bracket, each plow bottom assembly being pivotally attached through said support brackets along said plow beam such that said plow bottom assemblies are equally spaced along said plow beam, an elongated coupling member extending generally parallel to said plow beam and being pivotally connected to each of said support brackets forming a set of interconnected plow bottom assemblies, a coupling member pivotally attached at one end to said forecarriage unit and at its other end to the foremost plow bottom assembly, a double acting hydraulic cylinder anchored at one end to said plow beam and at its other end to said set of interconnected plow bottom assemblies such that actuation of said hydraulic cylinder will result in equal pivotal movement of each plow bottom assembly relative to said plow beam as well as a pivotal movement between said forecarriage unit and said plow beam about their pivotal connection.