Plastic cutting machine having endless conveying means to carry a die cutting assembly between pressure rollers

Claim 1

IN A MACHINE FOR CUTTING PLASTIC SHEETS, A HORIZONTAL TABLE HAVI NG A PAIR OF HORIZONTALLY SPACED SECTIONS, A FIRST ROTATABLE PRESSURE ROLLER DISPOSED BETWEEN THE SPACED SECTIONS OF THE TABLE FOR MOVEMENT THEREOVER OF AN ASSEMBLY OF DIE CUTTING BLADES AND AT LEAST ONE SHEET TO BE CUT BY THE BLADES, A SECOND ROTATABLE PRESSURE ROLLER, MOVABLE MEANS SUPPORTING SAID SECOND ROLLER ROTATABLY OVER THE FIRST ROLLER IN VERTICALLY SPACED RELATIONSHIP, AND MEANS FOR ADJUSTING SAID SUPPORT MEANS IN ELEVATION TO ADJUST AND SET THE VERTICAL SPACING BETWEEN THE FIRST AND SECOND ROLLERS, MOTOR DRIVE MEANS, AN ENDLESS CHAIN OPERATIVELY CONNECTING SAID MOTOR DRIVE MEANS AND SAID ROLLERS FOR CONTINUOUSLY DRIVING THE ROLLERS, AT IDLER SPROCKET CARRIED BY SAID SUPPORT MEANS AND MOABLE THEREWITH, SAID CHAIN BEING ENTRAINED ON SAID SPROCKET SO THAT THE CHAIN REMAINS OPERATIVELY ENGAGED WITH SAID ROLLERS IN ALL POSITIONS OF ADJUSTMENT OF THE SPACING BETWEEN THE ROLLERS, SAID SECTIONS OF THE TABLE HAVING LONGITUDINALLY EXTENDING SLOTS, ENDLESS BELTS HAVING STRAIGHT COURSES DISPOSED IN SAID SLOTS AND PROJECTING OUTWARDLY THEREOF, AND IDLER ROLLERS CARRYING SAID ENDLESS BELTS, CERTAIN OF SAID IDLER ROLLERS BEING DISPOSED IN ENGAGEMENT WITH THE FIRST PRESSURE ROLLER SO THAT THE ENDLESS BELTS ARE DRIVEN CONTINUOUSLY IN COORDINATION WITH ROTATION OF THE PRESSURE ROLLERS.