Agricultural folding tool bar

Claim 1

A folding tool bar adapted to support ground working tools and comprising: (a) a normally horizontal, hollow central section; (b) an outer wing section pivotally connected to said central section about an offset axis for movement between a working position in general alignment with said central section and a folded transport position on said central section, said pivotal connection providing a fulcrum for a portion of said movement; (c) a hydraulic cylinder mounted in said central section; (d) a pair of spaced support means substantially spanning the interior of said central section and pivotally connected to the rod end of the cylinder, said connection being sufficiently below the center of said means to effectively increase the lever arm when the wing section is extended; and (e) a pair of links pivotally connected to said rod end by slotted openings, said wing having an ear, said ear being pivotally connected to said links, said links upon cylinder actuation, moving said wing upward until said wing passes inwardly over center of said axis and said links contact said fulcrum and pivot thereabout as the wing moves to the transport position, said support means relieving wing fall and said links slotted connection preventing support means binding in said central section in the movement between working and transport and vice versa.