Single web sheet cutting mechanism

Claim 1

A HIGH SPEED, SINGLE WEB, SHEET CUTTING AND DELIVERING MECHANISM COMPRISING, IN COMBINATION, CONVEYING MEANS FOR ADVANCING SHEET MATERIAL IN WEB FORM, A ROTARY CUTTER, A COLLECTING DRUM, A COMMON DRIVER FOR THE CUTTER, THE WEB CONVEYING MEANS AND THE COLLECTING DRUM, POWER TRANSMITTING MEANS CONNECTING THE CUTTER AND COLLECTING DRUM FOR OPERATION AT IDENTICAL ROTARY SPEED AND IN FIXED RELATION TO THE COMMON DRIVER, A POSITIVE CHANGE SPEED TRANSMISSION UNIT INTERPOSED BETWEEN THE COMMON DRIVER AND THE WEB CONVEYING MEANS AND SETTABLE TO CONTROL THE LENGTH OF WEB FED DURING A CUTTER CYCLE, THEREBY TO DETERMINE THE LENGTH OF SHEET CUT, AND MEANS FOR ACCELERATING EACH CUT SHEET, REGARDLESS TO ITS LENGTH, FROM THE SPEED OF THE WEB TO THE PERIPHERAL SPEED OF THE COLLECTING DRUM SO THAT THE SUCCESSIVE SHEET DELIVERED TO THE COLLECTING DRUM MAY BE COLLECTED THEREON IN REGISTERING PACKETS, A TRANSFER CONVEYOR MEANS FOR RECEIVING THE SHEET PACKETS FROM THE COLLECTING DRUM, MEANS AUTOMATICALLY EFFECTIVE WHEN THE PRESCRIBED NUMBER OF SHEETS HAS BEEN ACCEPTED FOR ACCUMULATION THE THE COLLECTING DRUM TO BRING ABOUT DELIVERY OF THE RESULTING SHEET PACKET TO THE TRANSFER CONVEYING MEANS, RECEIVING MECHANISM FOR ACCEPTING THE PACKETS FROM THE TRANSFER CONVEYING MEANS AT GREATLY REDUCED SPEED, MEANS DRIVING THE TRANSFER CONVEYING MEANS AT THE PERIPHERAL SPEED TO THE COLLECTING DRUM THROUGHOUT SAID DELIVERY, AND AUTOMATICALLY EFFECTIVE WHEN THE DELIVERY OF A PACKET OF SHEETS TO THE TRANSFER CONVEYING MEANS HAS BEEN COMPLETED, TO SO MODIFY THE TRANSFER CONVEYING MEANS DRIVE THAT THE TRANSFER CONVEYING MEANS IS PUT THROUGH A SLOWDOWN AND RESTORATION CYCLE DURING WHICH THE TRANSFER CONVEYING MEANS ADVANCES THE SHEET PACKET AT HIGH SPEED ONTO THE RECEIVING MECHAINSM AND THEN SLOWS DOWN PROGRESSIVELY AS THE PACKET MOVES ACROSS THE RECEIVING MECHANISM UNTIL THE PACKET OF SHEETS IS DISCHARGED TO SAID RECEIVING MECHANISM AT A RELATIVELY LOW SPEED, THE TRANSFER CONVEYING MEANS DRIVE THEN PROGRESSIVELY RESTORING THE SPEED TO THE TRANSFER CONVEYING MEANS TO THE COLLECTING DRUM SPEED BY A TIME NO LATER THAN THAT AT WHICH THE NEXT ACCUMULATED PACKET OF SHEETS ON THE COLLECTING DRUM BECOMES READY FOR DELIVERY TO THE TRANSFER CONVEYING MEANS.