Implement attaching hitch mechanism

Claim 1

IN A HITCH MECHANISM FOR SUPPORTABLY AND DETACHABLY FASTENING AN EARTHWORKING IMPLEMENT TO A TRACTOR, THE COMBINATION, COMPRISING: A PAIR OF GENERALLY FOREAND AFT EXTENDING LATERALLY SPACED-APART DRAFT LINKS MOUNTED AT THE FORWARD ENDS THEREOF ON THE TRACTOR FOR LATERAL AND VERTICAL SWINGING; MEANS EXTENDING BETWEEN THE REARWARD ENDS OF SAID DRAFT LINKS AND SELECTIVELY CONNECTIBLE THEREBETWEEN FOR PERMITTING LIMITED LATERAL SWINGING OF SAID DRAFT LINKS OR FOR RESTRAINING THE LATERAL SWINGING THEREOF; A RIGID UPPER LINK MEMBER PIVOTALLY MOUNTED AT A FORWARD END THEREOF ON THE TRACTOR FOR LATERAL AND VERTICAL SWINGING; A PAIR OF INTERMEDIATE LINKS CONNECTED ONE EACH TO A RESPECTIVE REARWARD END PORTION OF SAID DRAFT LINKS AND EXTENDING REARWARDLY THEREFROM; SAID INTERMEDIATE LINKS BEING PIVOTALLY CONNECTED TO THE RESPECTIVE DRAFT LINKS ON A LATERALLY EXTENDING HORIZONTAL AXIS AND BEING ROTATABLE IN VERTICAL PLANES RELATIVE TO THE RESPECTIVE DRAFT LINKS; EACH INTERMEDIATE LINK BEING FASHIONED WITH A PROJECTION EXTENDING OUTWARDLY FROM ONE SIDE THEREOF AND TOWARD ONE ANOTHER, AND HAVING A DOWNWARDLY FACING BUMBER THEREON; EACH SAID DOWNWARDLY FACING BUMPER HAVING FIRST AND SECOND SURFACE PORTIONS IN THE SAME VERTICAL PLANES AS THE RESPECTIVE DRAFT LINKS WITH THE FIRST PORTION BEING ANGULARLY DISPOSED RELATIVE TO THE SECOND PORTION; SAID FIRST AND SECOND SURFACE PORTIONS, UPON ROTATION OF SAID INTERMEDIATE LINKS IN VERTICAL PLANES RELATIVE TO SAID DRAFT LINKS, BEING COOPERATIVELY ENGAGEABLE WITH THE RESPECTIVE DRAFT LINKS FOR LIMITING SAID ROTATIVE MOVEMENT OF SAID INTERMEDIATE LINKS; AND MEANS INCLUDING A YOKE MEMBER INTERCONNECTING THE REARWARD ENDS OF SAID INTERMEDIATE LINKS AND SAID UPPER LINK FOR EFFECTING A COORDINATED MOVEMENT OF THE REARWARD ENDS OF SAID UPPER LINK AND SAID INTERMEDIATE LINKS.