Apparatus for cutting a moving sheet

Claim 1

AN APPARATUS FOR CUTTING A LONGITUDINALLY MOVING SHEET OF THIN MATERIAL, SAID APPARATUS COMPRISING A TUBE EXTENDING GENERALLY TRANSVERSELY ACROSS SAID SHEET AND SPACED THEREFROM, A SLOT IN SAID TUBE AND FACING SAID SHEET, SAID SLOT COEXTENSIVE WITH SAID TUBE AND HAVING A LENGTH GREATER THAN THE WIDTH OF SAID SHEET, A CUTTER HAVING A BODY SLIDABLY RECEIVED WITHIN SAID TUBE AND A CUTTING EDGE PROTRUDING THROUGH SAID SLOT AND POSITIONED GENERALLY PERPENDICULAR TO SAID SHEET, A FLUID CYLINDER PARALLEL TO SAID TUBE AND EXTENDING ALONG ONE SIDE THEREOF, A PISTON RECIPROCALLY RECEIVED WITHIN SAID CYLINDER, A FIRST SHEAVE BETWEEN SAID TUBE AND CYLINDER AT ONE END THEREOF, A SECOND SHEAVE BETWEEN SAID TUBE AND CYLINDER AT THE OTHER END THEREOF, A CABLE-LIKE ELEMENT EXTENDING AROUND EACH OF SAID SHEAVES AND CONNECTING SAID BODY IN SAID TUBE ONTO SAID PISTON IN SAID CYLINDER, A SOURCE OF PRESSURIZED FLUID, A FIRST AND SECOND CONDUIT FOR CONNECTING SAID SOURCE TO SAID CYLINDER AT FIRST AND SECOND SIDES OF SAID PISTON, A FIRST VALVE IN SAID FIRST CONDUIT FOR SELECTIVELY OPENING SAID FIRST CONDUIT FOR ACTUATION OF SAID PISTON AND CUTTER IN UNISON IN A FIRST DIRECTION TO MOVE SAID CUTTING EDGE ACROSS SAID SHEET AT A VELOCITY GREATLY EXCEEDING THE VELOCITY OF SAID MOVING SHEET AND A SECOND VALVE IN SAID SECOND CONDUIT FOR SELECTIVELY OPENING SAID SECOND CONDUIT FOR ACTUATION OF SAID PISTON AND CUTTER IN UNISON IN A SECOND DIRECTION TO MOVE SAID CUTTING EDGE IN A DIRECTION OPPOSITE TO SAID FIRST-MENTIONED CUTTING DIRECTION OF SAID EDGE.

Claim 2

AN APPARATUS FOR CUTTING A LONGITUDINALLY MOVING SHEET OF THIN MATERIAL, SAID APPARATUS COMPRISING A TUBE EXTENDING GENERALLY TRANSVERSELY ACROSS SAID SHEET AND SPACED THEREFROM, A SLOT IN SAID TUBE AND FACING SAID SHEET, SAID SLOT COEXTENSIVE WITH SAID TUBE AND HAVING A LENGTH GREATER THAN THE WIDTH OF SAID SHEET, A CUTTER HAVING A BODY SLIDABLY RECEIVED WITHIN SAID TUBE AND A CUTTING EDGE PROTRUDING THROUGH SAID SLOT AND POSITIONED GENERALLY PERPENDICULAR TO SAID SHEET, A FLUID CYLINDER PARALLEL TO SAID TUBE AND EXTENDING ALONG ONE SIDE THEREOF, A PISTON RECIPROCALLY RECEIVED WITHIN SAID CYLINDER, A FIRST SHEAVE BETWEEN SAID TUBE AND CYLINDER AT ONE END THEREOF, A SECOND SHEAVE BETWEEN SAID TUBE AND CYLINDER AT THE OTHER END THEREOF, A CABLE-LIKE ELEMENT EXTENDING AROUND EACH OF SAID SHEAVES AND CONNECTING SAID BODY IN SAID TUBE ONTO SAID PISTON IN SAID CYLINDER, A SOURCE OF PRESSURIZED FLUID, A FIRST AND SECOND CONDUIT FOR CONNECTING SAID SOURCE TO SAID CYLINDER AT FIRST AND SECOND SIDES OF SAID PISTON, A FIRST VALVE IN SAID FIRST CONDUIT FOR SELECTIVELY OPENING SAID FIRST CONDUIT FOR ACTUATION OF SAID PISTON AND CUTTER IN UNISON IN A FIRST DIRECTION TO MOVE SAID CUTTING EDGE ACROSS SAID SHEET AT A VELOCITY GREATLY EXCEEDING THE VELOCITY OF SAID MOVING SHEET AND A SECOND VALVE IN SAID SECOND CONDUIT FOR SELECTIVELY OPENING SAID SECOND CONDUIT FOR ACTUATION OF SAID PISTON AND CUTTER IN UNISON IN A SECOND DIRECTION TO MOVE SAID CUTTING EDGE IN A DIRECTION OPPOSITE TO SAID FIRST-MENTIONED CUTTING DIRECTION OF SAID EDGE.