Web splicing apparatus

Claim 1

A WEB SPLICING APPARATUS FOR SPLICING A WEB FROM A WEB RESERVE ROLL ONTO A MOVING WEB RUNNING FROM A WEB SUPPLY ROLL COMPRISING A MOVABLE SUPPORT FOR ROTATABLY SUPPORTING A WEB SUPPLY ROLL AND A WEB RESERVE ROLL; SUPPORT DRIVING MEANS FOR MOVING SAID SUPPORT; A ROLL ACCELERATING ARM PIVOTALLY SUPPORTED ABOVE THE PATH OF MOVEMENT OF SAID ROLL SUPPORT; A PASTER ARM PIVOTALLY SUPPORTED ABOVE SAID WEB SUPPLY ROLL; A PASTER BRUSH MOUNTED ON SAID PASTER ARM FOR PASTING SAID MOVING WEB RUNNING FROM SAID WEB SUPPLY ROLL ONTO THE WEB OF SAID WEB RESERVE ROLL; A SEVERING KNIFE MOUNTED ON SAID PASTER ARM FOR SEVERING THE WEB FROM SAID WEB SUPPLY ROLL AFTER SAID MOVING WEB HAS BEEN PASTED TO THE WEB OF SAID WEB RESERVE ROLL; PNEUMATIC ROLL BRAKING MEANS FOR MAINTAINING SUBSTANTIALLY CONSTANT TENSION ON SAID MOVING WEB RUNNING FROM SAID WEB SUPPLY ROLL COMPRISING A FLOATING ROLLER CONTACTING SAID MOVING WEB; A TENSION BELT CONTACTING SAID WEB SUPPLY ROLL, A PNEUMATICALLY OPERATED TENSION PISTON FOR CONTROLLING TENSION IN SAID TENSION BELT AND A VARIABLE PRESSURE CONTROL VALVE CONNECTED TO A SOURCE OF PNEUMATIC PRESSURE AND OPERATED BY MOVEMENT OF SAID FLOATING ROLLER FOR CONTROLLING PNEUMATIC PRESSURE EXTERTED ON SAID PISTON; A ROLL ACCELERATING BELT MOUNTED ON SAID ROLL ACCELERATING ARM ADAPTED TO ENGAGE A SUBSTANTIAL PORTION OF THE OUTER PERIPHERY OF SAID RESERVE ROLL; ROLL ACCELERATING BELT DRIVE MEANS FOR DRIVING SAID BELT; PNEUMATIC DRIVE BRAKE MEANS CONNECTED TO SAID ROLL ACCELERATING BELT DRIVE MEANS; SPLICING VALVE MEANS FOR CONNECTING SAID PNEUMATIC DRIVE BRAKE MEANS TO SAID VARIABLE PRESSURE CONTROL VALVE AFTER SAID WEB HAS BEEN SEVERED BY SAID SEVERING KNIFE; SHUTTE VALVE MEANS FOR CONNECTING SAID PNEUMATICALLY OPERATED TENSION PISTON DIRECT TO SAID SOURCE OF PNEUMATIC PRESSURE AFTER SAID WEB HAS BEEN SEVERED BY SAID SEVERING KNIFE; SUPPORT POSITIONING MEANS CONTACTING SAID WEB RESERVE ROLL TO POSITION THE OUTER PERIPHERY OF SAID WEB RESERVE ROLL AT A PREDETERMINED DISTANCE FROM SAID PASTER BRUSH REGARDLESS OF THE DIAMETER OF SAID WEB RESERVE ROLL; AND SEVERING TIMER MEANS RESPONSIVE TO THE SPEED OF THE MOVING WEB CONTROLLING MOVEMENT OF SAID SEVERING KNIFE TO MAINTAIN A CONSTANT LENGTH OF WEB FROM THE POINT THE WEB IS SEVERED TO THE POINT WHERE SAID MOVING WEB RUNNING FROM SAID WEB SUPPLY ROLL IS PASTED TO THE WEB OF SAID WEB RESERVE ROLL.