Hydraulically actuated hoist for tractors having a conventional three point hitch

Claim 1

A hydraulically actuated hoist adapted for mounting on a farm tractor having a three point hitch, said hoist comprising, in combination, a base of generally inverted T-shaped configuration and including a horizontally extending portion and a vertically extending portion, strut means extending diagonally between said horizontally extending portion and said vertically extending portion of said base, a telescopic boom including a first box beam section having one end portion thereof pivotally connected to said vertically extending portion of said base, a second box beam section telescopically disposed within said first box beam section and having means fixedly mounted at one end thereof for attaching a load thereto, means for locking said first and second box beam sections in any one of a plurality of selected positions relative to each other, a hydraulic piston and cylinder unit having one end portion thereof pivotally connected to said base and the other end portion thereof pivotally connected to said boom, said piston and cylinder unit being operable to raise and lower said boom, a pair of vertically extending support legs fixed to said horizontally extending portion of said base and projecting downwardly therefrom, an elongate support post pivotally connected to the end portion of said second box beam section, ground engageable pad means secured to the free end portions of said legs and post, said post being adapted to overlie said boom and being pivotable to a vertically extending position whereby said post and said legs cooperate to form a tripodal support for said hoist when said hoist is disconnected from said hitch, and means for releasably connecting said base to said three point hitch.