Earth moving implement with adjustable wheel assembly

Claim 1

An earth mover adapted to be towed in a forward direction and comprising a bucket having laterally spaced upright side walls and having a scraping blade extending between the lower rear portions of said side walls, means attached to and projecting forwardly from said bucket for connecting the latter to a towing vehicle, a wheel assembly comprising a support and a pair of laterally spaced ground-engaging wheels attached to said support, means mounting said support for up and down pivoting on the rear of said bucket and about a transversely extending axis, a reversible hydraulic actuator connected between said bucket and said support and operable when operated in opposite directions to wing said support and said wheels upwardly and downwardly in unison relative to said bucket and about said axis and thereby effect lowering and raising of said scraper blade with respect to the ground, means mounting one of said wheels for up and down linear movement relative to said support and said other wheel, and a second reversible hydraulic actuator connected between said support and said one wheel and operable when operated in opposite directions to shift said one wheel upwardly and downwardly relative to said support and said other wheel and thereby effect tilting of the bucket about a fore-and-aft extending axis.