Compact, triple-hinged agricultural implement tool bar

Abstract From the Canadian patent

A hydraulically actuated, triple-hinged tool bar comprised of four independently positioned sections is disclosed. A first outer section is flexibly coupled to one end of a center section of the tool bar while to the other end thereof is flexibly coupled an intermediate section the, length of which is less than that of the first outer section. A second outer section is flexibly coupled to the outer end of the intermediate section providing a lower profile when all sections of the tool bar are in the retracted or non working, position. Positioning control between the center section and the first outer and intermediate Sections is provided by respective hydraulically-actuated cylinders while …