Foldable harrow frame with harrow section elevating means

Claim 1

A TRACTOR ATTACHMENT FOR DRAGGING AND TRANSPORTING HARROW SECTIONS AND THE LIKE, SAID ATTACHMENT INCLUDING A FORE-AND-AFT TONGUE CONNECTIBLE TO A TRACTOR, AN ELONGATE FRAME STRUCTURE EXTENDING TRANSVERSELY OF THE TONGUE AND BEING SWINGABLY CONNECTED THERETO FOR SWINGING MOVEMENT INTO A TRANSPORT POSITION IN GENERALLY LONGITUDINAL RELATION TO THE TONGUE, SAID FRAME STRUCTURE HAVING COUPLING CONNECTIONS THEREON FOR READY CONNECTION TO A PLURALITY OF TRAILING HARROW SECTIONS DISPOSED REARWARDLY OF THE FRAME STRUCTURE AND ARRANGED IN SIDE-BY-SIDE RELATION WITH RESPECT TO EACH OTHER, MEANS FOR INTERLOCKING SAID FRAME STRUCTURE IN TRANSVERSELY EXTENDING RELATION WITH SAID TONGUE, A PAIR OF GROUND-ENGAGING WHEELS ON OPPOSITE SIDES OF SAID TONGUE, LINKAGE MECHANISM INTERCONNECTING SAID TONGUE AND SAID FRAME STRUCTURE AND COOPERATING WITH THE LATTER WHEN SAID INTERLOCKING MEANS IS RELEASED TO CAUSE SWINGING MOVEMENT OF THE FRAME STRUCTURE TO THE TRANSPORT POSITION DURING FORWARD MOVEMENT OF SAID TONGUE, AND ELEVATING MECHANISM MOUNTED ON SAID TONGUE AND FRAME STRUCTURE AND BEING CONNECTIBLE TO TRAILING HARROW SECTIONS AT POINTS REARWARDLY OF THE COUPLING CONNECTIONS BETWEEN TRAILING HARROW SECTIONS AND THE FRAME STRUCTURE, AND BEING OPERATED IN RESPONSE TO SWINGING MOVEMENT OF SAID FRAME STRUCTURE TOWARDS THE TRANSPORT POSITION TO CAUSE UPWARD SWINGING MOVEMENT OF SUCH HARROW SECTIONS ABOUT THEIR RESPECTIVE COUPLING CONNECTIONS WITH THE FRAME STRUCTURE.