Driver's seats for tractors

Claim 1

IN A TRACTOR HAVING A POWER HITCH FOR CONNECTION OF AN IMPLEMENT TO THE TRACTOR, SAID POWER HITCH INCLUDING HITCH ARMS MOUNTED ON THE TRACTOR OF VERTICAL ADJUSTMENT THEREON BY PIVOTAL MOVEMENT OF SAID ARMS ABOUT AN AXIS EXTENDING TRANSVERSELY OF THE TRACTOR, THE COMBINATION COMPRISING A DRIVER''S SEAT, MEANS MOUNTING SAID SEAT ON THE TRACTOR FOR PIVOTAL MOVEMENT IN RELATION TO THE TRACTOR ABOUT AN AXIS EXTENDING SUBSTANTIALLY IN THE LONGITUDINAL DIRECTION OF THE TRACTOR, A FIRST ELEMENT CONNECTED TO SAID POWER HITCH MOUNTED TO A MOVE PROPORTIONATELY WITH THE POWER HITCH, A SECOND ELEMENT CONNECTED TO THE DRIVER''S SEAT AND SPACED ON ONE SIDE OF THE PIVOT AXIS THEREOF, SAID FIRST ELEMENT LOCATED IN ABUTTING ENGAGEMENT WITH SAID SECOND ELEMENT WHEN SAID HITCH ARMS ARE LOCATED BETWEEN AN INTERMEDIATE POSITION OF PIVOTAL MOVEMENT AND A FULLY PIVOTED MOVEMENT, SAID ELEMENTS MOVABLE WITH RESPECT TO EACH OTHER WHEREBY SAID FIRST ELEMENT IS ENGAGEABLE WITH SAID SECOND ELEMENT AFTER AN INITIAL LOST MOTION WHEN SAID POWER HITCH IS MOVED FROM AN UPPER END POSITION, TO RAISE THE DRIVER''S SEAT ON SAID ONE SIDE OF THE PIVOT AXIS AND THEREBY TO TILT THE DRIVER''S SEAT FROM ITS NORMAL POSITION RELATIVE TO THE TRACTOR ABOUT THE PIVOT AXIS THEREOF IN DEPENDENCE ON THE PROPORTIONALLY TO CONTINUE DOWNWARD MOVEMENT OF THE POWER HITCH BELOW A PREDETERMINED ADJUSTED POSITION.