Folding chair construction

Claim 1

IN A FOLDING CHAIR HAVING UPRIGHT FRONT AND REAR LEG FRAMES PIVOTALLY INTERCONNECTED NEAR THEIR UPPER ENDS ON A TRANSVERSE AXIS FOR FORE AND AFT RELATIVE COLLAPSING AND SPREADING MOVEMENT OF THE LOWER PORTIONS OF THE FRAMES, EACH FRAME HAVING A PAIR OF TRANSVERSELY SPACED LEG MEMBERS EXTENDING DOWNWARDLY FROM THE PIVOT AXIS FOR ENGAGEMENT WITH A CHAIR SUPPORTING SURFACE, SAID FRONT FRAME LEGS EXTENDING FORWARDLY IN THEIR DOWNWARD EXTENSION WHEN THE FRAMES ARE SPREAD, A FRONT AND A REAR LINK PIVOTALLY INTERCONNECTED AND RESPECTIVELY HAVING THEIR DISTAL ENDS PIVOTED TO MEDIAL POINTS ON THE FRONT AND REAR LEG FRAMES TO LIMIT SPREADING MOVEMENT THEREOF, SAID LINK INTERPIVOT BEING BREAKABLE UPWARDLY TO ALLOW COLLAPSING MOVEMENT OF THE FRAMES, AND A FLAT SEAT MEMBER DISPOSED HORIZONTALLY BETWEEN THE FRONT LEGS AND OVER THE FRONT LINK WHEN THE FRAMES ARE SPREAD, AND A PARALLEL MOTION LINKAGE INCLUDING SAID FRONT AND REAR LINKS SUPPORTING SAID SEAT FOR MOVEMENT OF THE SEAT UPWARDLY WITH AND PARALLEL TO SAID FRONT LINK AS THE FRAMES ARE COLLAPSED.