Supporting glass sheets

Claim 1

IN TONGS FOR SUPPORTING A GLASS SHEET IN A SUBSTANTIALLY VERTICAL PLANE AND COMPRISING A TONG SUPPORT PIN, A PAIR OF LINKS HAVING AN UPPER AND A LOWER PORTION, EACH LINK BEING PIVOTED AT ITS UPPER PORTION TO SAID TONG SUPPORT PIN, A PAIR OF LINK PINS, A PAIR OF TONG ARMS HAVING AN UPPER PORTION AND A LOWER PORTION, ONE OF SAID LINK PINS PIVOTALLY CONNECTING THE LOWER PORTION OF ONE OF SAID LINK AND THE UPPER PORTION OF ONE OF SAID TONG ARMS, THE OTHER OF SAID LINK PINS PIVOTALLY CONNECTING THE LOWER PORTION OF THE OTHER OF SAID LINKS WITH THE UPPER PORTION OF THE OTHER OF SAID TONG ARM, A COMMON HINGE PIN PIVOTALLY CONNECTING SAID TONG ARMS TOGETHER AT A POINT BELOW SAID LINK PIN CONNECTIONS, AND GLASS SHEET GRIPPING MEANS CARRIED BY EACH OF SAID TONG ARMS BELOW SAID COMMON HINGE PIN IN OPPOSITE RELATION TO ONE ANOTHER FOR ENGAGING THE OPPOSITE SURFACES OF SAID GLASS SHEET NEAR ITS TOP EDGE, THE IMPROVEMENT IN SAID GLASS SHEET GRIPPING MEANS COMPRISING A PAIR OF OPPOSED GLASS ENGAGING MEMBERS HAVING SMOOTH, PERIPHERAL EDGE SURFACES OPPOSING ONE ANOTHER TO ENGAGE THE OPPOSITE SIDES OF A FLAT GLASS SHEET THEREBETWEEN, MEANS PIVOTALLY ATTACHING ONE OF SAID PAIR OF GLASS ENGAGING MEMBERS IN FREELY PIVOTABLE RELATION TO ONE OF SAID TONG ARMS ABOUT A FIRST AXIS SUBSTANTIALLY PARALLEL TO THE SURFACE OF SAID ENGAGED GLASS SHEET, AND MEANS PIVOTALLY ATTACHING THE OTHER OF SAID PAIR OF GLASS ENGAGING MEMBERS IN FREELY PIVOTABLE RELATION TO THE OTHER OF SAID TONG ARMS ABOUT AN ACIS SUBSTANTIALLY PARALLEL TO SAID FIRST AXIS, EACH OF SAID GLASS ENGAGING MEMBERS BEING PIVOTALLY ATTACHED CONCENTRICALLY THEREOF TO SAID PIVOTALLY ATTACHING MEANS.