Papermaking machine

Claim 1

IN A MACHINE FOR FORMING A PILE OF SHEETS FROM WEB MATERIAL, A ROTATABLE DRUM UPON WHICH LAYERS OF SAID MATERIAL MAY BE WOUND ON ROTATION OF THE DRUM, MEANS FOR DRIVINGLY ROTATING SAID DRUM, A KNIFE MOVABLE RADIALLY OF SAID DRUM WHEN THE DRUM IS STATIONARY FOR SEVERING THE LAYERS OF SAID MATERIAL AS SO WOUND ON THE DRUM TRANSVERSELY OF THE MATERIAL TO FORM A SLAB OF SHEET MATERIAL DISPOSED ABOUT THE DRUM, AN ENDLESS BELT, MEANS FOR MOVABLY HOLDING SAID BELT IN THE FORM OF A LOOP WITH A PART OF SAID LOOP EMBRACING SAID DRUM AND THE SHEET MATERIAL UPON THE DRUM FOR HOLDING THE MATERIAL AFTER SEVERANCE BY SAID KNIFE AS SAID DRUM IS ROTATED BY SAID DRIVING MEANS FOR UNWINDING SAID SLAB THEREFROM SO AS TO FORM A PILE OF SHEETS, SAID BELT HOLDING MEANS INCLUDING A PLURALITY OF ROTATABLE ROLLS, A PAIR OF END ARMS ROTATABLY CARRYING ONE OF SAID ROLLS AND MOUNTED AS LEVERS, A ROTATABLE SHAFT SPACED FROM THE CENTERS OF ROTATION OF SAID END ARMS, AND MEANS DRIVINGLY CONNECTING SAID END ARMS TO THE OPPOSITE ENDS OF SAID ROTATABLE SHAFT SO THAT THE ARMS SWING THROUGH THE SAME ANGLE SIMULTANEOUSLY TO PROVIDE FOR UNIFORM RETRACTION OF THE BELT FROM SAID DRUM AND THE WEB MATERIAL WOUND THEREON SO THAT THE WEB MATERIAL MAY BE WOUND ON THE DRUM WITHOUT CORRESPONDING MOVEMENT OF THE BELT.