Apparatus for rotarily punching webs of paper

Claim 1

A WEB PERFORATING APPARATUS OF THE ROTARY TYPE, COMPRISING IN COMBINATION, A PAIR OF COPLANAR ROTATABLE PERFORATING WHEELS HAVING PERIPHERIES MOVABLE IN CLOSE PROXIMITY TO ACCOMMODATE THEREBETWEEN A CORRESPONDINGLY MOVABLE WEB TO BE PERFORATED, THE AXES OF THE WHEELS LYING IN A COMMON BISECTING PLANE WHICH INCLUDES THE POINT OF CLOSEST PROXIMITY BETWEEN THE WHEEL PERIPHERIES, A SERIES OF DIES CARRIED BY ONE OF THE WHEELS AND FIXED WITH RESPECT TO THE OUTER PERIPHERY OF THE ASSOCIATED WHEEL, SAID DIES EACH HAVING A PLANAR CUTTING EDGE SUBSTANTIALLY PERPENDICULAR TO A RADIUS OF THE ASSOCIATED WHEEL, AND A SERIES OF CO-OPERTING PUNCHES CARRIED BY THE OTHER WHEEL AND BEING IN FIXED RELATIONSHIP TO THE OUTER PERIPHERY OF THE ASSOCIATED WHEEL, THE PUNCHES HAVING CUTTING HEADS EXTENDING OUTWARDLY FROM THE PERIPHERY OF THE WHEEL CARRYING THE PUNCHES, EACH OF SAID DIES HAVING A BORE THEREIN FOR RECEIVING A CO-OPERATING PUNCH, EACH OF SAID HEAD HAVING A PLANAR CUTTING EDGE BEING INCLINED IN THE DIRECTION OF ROTATION OF THE WHEEL AND WITH RESPECT TO A RADIAL LINE OF SAID LAST-MENTIONED WHEEL WHICH