Hydraulically operated drag device

Claim 1

A HARROW DRAG CART COMPRISING A HITCH FRAME ATTACHABLE TO A TOWING VEHICLE, AN INTERMEDIATE TRANSVERSELY EXTENDING TILLAGE BAR SEGMENT JOURNALED TO SAID HITCH FRAME, RESPECTIVE SIDE TILLAGE BAR SEGMENTS HINGED TO THE ENDS OF SAID INTERMEDIATE SEGMENT, A PLURALITY OF SUBSTANTIALLY COPLANAR HARROW SUPPORTING ARMS RIGIDLY SECURED TO SAID TILLAGE BAR SEGMENTS, A FLUID PRESSURE CYLINDER AND PISTON ASSEMBLY OPERATIVELY CONNECTED BETWEEN SAID HITCH FRAME AND INTERMEDIATE TILLAGE BAR SEGMENT TO ROTATE SAID TILLAGE BAR SEGMENTS BETWEEN AN OPERATING POSITION WHEREIN SAID SUPPORTING ARMS EXTEND SUBSTANTIALLY HORIZONTALLY AND REARWARDLY AND A NON-OPERATING POSITION WHEREIN SAID SUPPORTING ARMS PROJECT UPWARDLY, RESPECTIVE AXLES PIVOTED TO SAID SIDE BAR TILLAGE SEGMENTS, SAID AXLES BEING PIVOTED TO SAID SIDE BAR SEGMENTS ON AXES PARALLEL TO THE AXES OF THE HINGE CONNECTIONS OF SAID SIDE BAR SEGMENTS TO THE INTERMEDIATE TILLAGE BAR SEGMENT, SAID AXES BEING ALL SUBSTANTIALLY VERTICAL WHEN THE TILLAGE BAR SEGMENTS ARE IN SAID NON-OPERATING POSITION AND BEING HORIZONTAL WHEN SAID BAR SEGMENTS ARE IN SAID OPERATING POSITION, RESPECTIVE SUPPORTING WHEELS JOURNALED ON SAID AXLES AND EXTENDING IN LONGITUDINAL ALIGNMENT WITH THE DIRECTION OF TRAVEL OF THE CART AFTER SAID TILLAGE BAR SEGMENTS HAVE BEEN ROTATED TO OPERATING POSITION, SAID SIDE TILLAGE BAR SEGMENTS BEING FOLDABLE REARWARDLY WHEN THE TILLAGE BAR SEGMENTS ARE IN SAID NONOPERATING POSITION, MEANS LIMITING UPWARD ROTATION OF SAID SIDE TILLAGE BAR SEGMENTS RELATIVE TO SAID INTERMEDIATE TILLAGE BAR SEGMENT, RESPECTIVE CONTROL ARMS SECURED TO SAID AXLES, AND LINK MEANS CONNECTING SAID CONTROL ARMS TO SAID INTERMEDIATE TILLAGE BAR SEGMENT AND CONTROLLING THE DIRECTION OF SAID WHEELS SO AS TO MAINTAIN SAID WHEELS PARALLEL AND IN LONGITUDINAL ALIGNMENT WITH THE DIRECTION OF TRAVEL OF THE CART AS SAID SIDE TILLAGE BAR SEGMENTS ARE BEING FOLDED REARWARDLY.