Clamping devices for mated flanges

Claim 1

IN A CLAMPING DEVICE FOR TWO PARALLEL MATING FLANGES ONE OF WHICH HAS A BODY PORTION, THE COMBINATION OF A PIVOT BAR MEMBER CARRIED BY SAID BODY PORTION AND EXTENDING OUTWARDLY THEREFROM, AND A SWIVEL CLAMP MEMBER PIVOTALLY CONNECTED TO SAID PIVOT BAR MEMBER; SAID CLAMP MEMBER HAVING A SHANK POSITIONED EXTERIORLY OF SAID FLANGES, TWO SPACED HOLDING ARMS CONNECTED TO SAID SHANK, FORCE-APPLYING MEANS ON ONE OF SAID ARMS FOR OPERATIVE ENGAGEMENT WITH ONE OF SAID FLANGES, AND FLANGEENGAGING MEANS ON THE OTHER OF SAID ARMS FOR OPERATIVE ENGAGEMENT WITH THE OTHER OF SAID FLANGES, SAID ARMS EXTENDING FORWARDLY FROM SAID SHANK AND BEING IN FLANKING RELATION TO SAID FLANGES WHEN SAID CLAMP MEMBER IS IN OPERATIVE CLAMPING POSITION, SAID PIVOT BAR, SAID HOLDING ARMS AND SAID FORCE-APPLYING MEANS BEING CONTAINED WITHIN THE SAME PLANE; AND COACTIVE PIVOTAL MEANS ON SAID PIVOT BAR MEMBER AND THE ADJACENT END OF SAID CLAMP MEMBER AND HAVING AN AXIS EXTENDING LONGITUDINALLY OF SAID SHANK AND DISPOSED EXTERIORLY OF SAID FLANGES, SAID PIVOTAL MEANS COMPRISING A PIVOT PIN ON ONE OF SAID MEMBERS AND AN APERTURED PORTION ON THE OTHER OF SAID MEMBER, SAID PIN BEING IN PIVTOAL AND SLIDABLE ENGAGEMENT WITH SAID APERTURED PORTION, SAID FORCE-APPLYING MEANS AND SAID PIVOTAL MEANS BEING ON OPPOSITE SIDES OF SAID MATING FLANGES, SAID PIN AND APERTURED PORTION BEING SO POSITIONED AND PROPORTIONED AS TO PROVIDE A CLEARANCE SPACE BETWEEN SAID PIVOT BAR MEMBER AND THE SAID ADJACNET END OF SAID CLAMP MEMBER WHEN SAID CLAMP MEMBER IS IN OPERATIVE CLAMPING POSITION, WHEREBY SAID PIVOT BAR MEMBER WILL BE FREE TO MOVE IN THE DIRECTION OF THE EXTENT OF SAID AXIS TOWARD SAID CLAMP MEMBER DURING THE OPERATIVE RELATIVE MOVEMENTS OF SAID FLANGES UPON AN OPERATIVE MANIPULATION OF SAID FORCE-APPLYING MEANS.