Abstract: An earth moving machine attachment is disclosed comprising a plurality of disk units mounted to a disk unit mounting beam which is fixed to a beam pushing frame for pivotally coupling to a dozer or tractor C frame. The beam pushing frame is angled obtusely in a clockwise or counterclockwise direction from the direction of push by a pair of reciprocal operating hydraulic cylinders to grade the earth materials to one side or the other of the C frame. The disk unit mounting beam and attached disk units are hingedly connected to a parallel offset shaft of the beam pushing frame for tilting the disk blades to provide restricted floatation on the earth materials. A sliding feature of the hinged connection between the disk unit mounting beam and the beam pushing frame accommodates hydraulic power means of shifting the load relative to the pushing axis of the earth moving machine.

Abstract: A disk grading terrace plow comprising a plurality of disk units mounted below an angled beam frame which is towed at an angle of 40 to 45 degrees to the direction of tow via a tractor connected to an elevated hitch beam mounted to the said angle beam frame in a lateral position which balances draft torques. Alignment of the said disk units, each comprising a disk blade, shank and attachment structure, along the angled beam frame is such that dirt is excavated from a furrow and discharged both vertically and laterally in front of the next sequential rearward disk. The excavated dirt then continues to shift from disk-to-disk in a compound grading manner until all the dirt is shifted around the rearmost disk blade. The depth of cut for the disk grading terrace plow is controlled by adjusting hydraulic cylinders connected to a front and rear gauge wheel, respectively.