Panel supporting and lifting device having adjustable walls and gripping jaws

Claim 1

IN A SUPPORTING AND LIFING DEVICE FOR LIFTING AN UPSTANDING STACK OF PANELS OFF THE LOWERMOST PANELS IN THE STACK, THE COMBINATION COMPRISING: A FRAME INCLUDING A SHELF AND A WALL UPSTANDING THEREFROM; AN OPPOSED, SPACED PAIR OF UPWARDLY EXTENDED GUIDE WALLS PENDENTLY SUPPORTED ON SAID UPSTANDING WALL FOR PIVOTAL MOVEMENT TOWARD AND AWAY FROM EACH OTHER, SAID GUIDE WALLS EXTENDING AWAY FROM SAID UPSTANDING WALL ABOVE SAID SHELF FOR LATERALLY SUPPORTING SAID STACK THEREBETWEEN; AT LEAST ONE OUTWARDLY EXTENDING PLATE SUBSTANTIALLY PARALLEL TO SAID UPSTANDING WALL ON EACH OF SAID GUIDE WALLS ADJACENT THE LOWER END THEREOF; A ROTATABLE ECCENTRIC EXTENDING BETWEEN AND ENGAGING SAID UPSTANDING WALL AND SAID PLATES ON EACH OF SAID GUIDE WALLS FOR ADJUSTING THE DISTANCE BETWEEN SAID GUIDE WALLS UPON ROTATION THEREOF; A CAMMING ELEMENT, MEANS MOUNTING SAME ON SAID PLATE FOR MOVEMENT AT LEAST TOWARD AND AWAY FROM SAID STACK, MEANS FOR LIMITING MOVEMENT OF SAID CAMMING ELEMENT AT LEAST TOWARD SAID STACK AND ADJUSTABLE COMPRESSION SPRING MEANS FOR URGING SAID ELEMENT TOWARD SAID STACK;