Walk-over seat for vehicles with means for reversing the inclination of seat cushion

Claim 1

IN A WALK-OVER CHAIR, THE COMBINATION OF (1) A BASE HAVING END BRACKETS EACH OF WHICH HAS AN INNER HORIZONTAL SUPPORTING SURFACE AND A SEAT ENGAGING LUG AT EITHER END; (2) A BACK REST REVERSIBLE RELATIVE TO SAID BASE; (3) SLIDING BLOCKS MOUNTED ON EACH INNER HORIZONTAL SUPPORTING SURFACE OF SAID END BRACKETS AND ADAPTED TO RIDE ON AND MOVE ONLY HORIZONTALLY WITH RESPECT TO THE HORIZONTAL SUPPORTING SURFACES; (4) A SEAT ABOVE SAID SLIDING BLOCKS AND ENGAGED THEREBY FOR HORIZONTAL MOTION THEREWITH BUT WITH RELATIVE VERTICAL MOTION THEREBETWEEN, SAID SEAT HAVING CHOCKS THAT ENGAGE AND RIDE UP ON THE FORWARD SEAT ENGAGING LUGS OF SAID END BRACKETS WHEN SAID SEAT IS MOVING THERE TOWARDS; (5) AND AT EACH END OF SAID BASE A REVERSING AND SUPPORTING LINKAGE HAVING TWO PARALLEL ARMS OF EQUAL LENGTH PIVOTABLY MOUNTED AT ONE END ON SAID END BRACKETS ABOVE SAID INNER HORIZONTAL SUPPORTING SURFACE AND PIVOTALLY ATTACHED AT THE OTHER END THEREFORE TO THE END OF SAID BACK REST BY A SUPPORTING BRACKET, AND A DOWNWARDLY EXTENDING CRANK ARM ATTACHED TO THE LOWER END OF ONE OF SAID TWO PARALLEL ARMS AND ADAPTED TO ROTATE THEREWITH, SAID CRANK ARM ENGAGING SAID SLIDING BLOCK AND CAUSING IT TO MOVE HORIZONTALLY UPON REVERSAL OF SAID BACK REST IN THE OPPOSITE DIRECTION, WHEREBY UPON REVERSAL OF SAID BACK-REST THE INCLINATION OF SAID SEAT IS CHANGED TO A COMFORTABLE SITTING POSITION SLIGHTLY DOWNWARDLY INCLINED TOWARDS SAID BACK REST.