Stabilizer arm arrangement for a case palletizer

Claim 1

IN APPARATUS FOR PALLETIZING CASES, THE COMBINATION COMPRISING: PLATFORM MEANS DISPOSED HORIZONTALLY FOR RECEIVING A PLURALITY OF VERTICALLY STACKED CASES; FIRST TRANSFER MEANS ALIGNED WHITH SAID PLATFORM MEANS FOR MOVING STACKS OF CASES THEREON IN A SELECTED PATH; UPRIGHT FRAME MEANS MOUNTED FOR RECIPROCABLY SLIDABLE MOVEMENT IN A PATH ACROSS SAID PLATFORM MEANS TRANSVERSE SAID SELECTED PATH AND FOR STATIONARY DISPOSITION ADJACENT ONE SIDE OF SAID PLATFORM MEANS; STRUCTURE MEANS ON SAID FRAME MEANS HAVING HORIZONTALLY SPACED ATTACHMENT SITE; A PAIR OF GRIPPER ARM MEANS MOUNTED RESPECTIVELY AT SAID SITES FOR MOVEMENT TOWARD AND AWAY FROM EACH OTHER FOR GRIP PING AND RELEASING CASES STACKED THEREBETWEEN; DRIVE MEANS FOR REPOSITIONING SAID ARM MEANS BETWEEN A CONVERGED POSITION GRIPPING THE STACKED CASES FOR STABILIZING THE SAME AND A RETRACTED POSITION RELEASING SAID CASES AND FREEING SAID SELECTED PATH FOR TRANSFER OF SUCCEEDING, STACKED CASES ONTO SAID PLATFORM MEANS; AND SECOND TRANSFER MEANS CONTACTING SAID UPRIGHT FRAME MEANS FOR MOVING THE SAME IN SAID TRANSVERSE PATH, SAID DRIVE MEANS OPERATIG TO HOLD SAID ARM MEANS IN CONVERGED POSITION DURING THE FORWARD STROKE OF SAID SECOND TRANSFER MEANS FOR STABILIZING THE GRIPPED CASES AND SAID DRIVE MEANS ACTING TO RETRACT SAID ARM MEANS UPIN INITIATION OF THE RETURN STROKE OF SAID SECOND TRANSFER MEANS FOR RELEASING SAID GRIPPED CASES.