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Earth working apparatuses and more specifically a ditcher or slope cutting device adapted to be connected with a conventional three point hitch mounted at the rear of a conventional tractor. The earth working apparatus includes a rigid square or rectangular frame having pairs of pivot lugs spaced la

Earth working apparatuses and more specifically a ditcher or slope cutting device adapted to be connected with a conventional three point hitch mounted at the rear of a conventional tractor. The earth working apparatus includes a rigid square or rectangular frame having pairs of pivot lugs spaced laterally on a front member thereof for pivotal connection to the lower links or arms of a three point hitch and a pair of centrally located upwardly disposed pivot lugs pivotally supporting an upright member having its upper end connected to the upper link or arm of the three point hitch. A hydraulic ram or mechanical structure interconnects the frame at a point spaced rearwardly from the front and an upper end portion of the upwardly extending member in order to adjust the angular relation between the frame and the upwardly extending member and angularly adjust the frame in relation to the three point hitch and in relation to the ground surface. The frame includes one or more ground engaging blades which are supported from the frame for adjustable rotatable or pivotal movement in relation to the frame and ground surface, by a hydraulic ram or mechanical structure, about an axis that is perpendicular to the frame thereby enabling adjustment of the plane of contact with the ground surface to be varied as to its angle of inclination due to the capability of varying the angular relation of the frame to the ground surface and the change in angular disposition of the blade or blades in relation to the frame about an axis perpendicular to the frame.

대표청구항 ▼

A ditcher adapted to be connected to a three point hitch of a tractor by which the ditcher can be towed and adjusted in elevational position, said ditcher including a rigid frame, means at a forward portion of the frame for connection with a three point hitch, an elongated earth working blade positi

A ditcher adapted to be connected to a three point hitch of a tractor by which the ditcher can be towed and adjusted in elevational position, said ditcher including a rigid frame, means at a forward portion of the frame for connection with a three point hitch, an elongated earth working blade positioned below the frame and extending at least partially transversely thereof, means mounting the earth working blade from the frame for pivotal movement in relation to the hitch about a generally vertical axis perpendicular to the frame, means interconnecting the frame and earth working blade to pivot the earth working blade about the generally vertical mounting axis of said earth working blade, said frame having a substantial longitudinal extent, means pivotally supporting a forward portion of the frame from the three point hitch for pivotal movement about a generally horizontal transverse axis, and means interconnecting the three point hitch and the frame at a point rearwardly of the forward portion of the frame to pivot the frame about said transverse axis located at the forward portion of the frame to pivot the frame about said transverse axis independently of said hitch and said means interconnecting the frame and blade for pivoting the blade about the mounting axis of the earth working blade in relation to a ground surface to be engaged by the earth working blade, said means mounting the earth working blade from the frame including an upwardly extending shaft rigid with a midportion of said blade, said frame including a bearing sleeve perpendicular to the frame receiving said shaft, said means interconnecting the frame and the earth working blade including adjustment means connected to said frame and said shaft, said adjustment means connected to said frame and said shaft including a laterally extending arm connected with said shaft and power means connected to said frame add an outer end of said arm for pivoting the blade about a longitudinal axis of said shaft, said frame being substantially square and formed with beams in a single plane, each inside corner of said frame including a bearing sleeve, and a wing blade pivotally supported from a bearing sleeve on the frame for pivotal movement about an axis perpendicular to the plane of the frame, a laterally extending arm connected with the wing blade and linkage means interconnecting the arm on the wing blade and the arm on the elongated blade shaft for pivoting the wing blade simultaneously with the elongated blade.