Apparatus for perforating and bonding moving sheets of material by electrical discharges

Claim 1

APPARATUS ADAPTED TO PERFORATE AND BOND MOVING SHEETS BY SIMULTANEOUS, MULTIPLE ELECTRIC ARC DISCHARGES COMPRISING: (A) A FIXED PLATE ELECTRODE HAVING AN ARCUATE SHAPE; (B) A PLURALITY OF PIN ELECTRODES, EACH HAVING AN INDIVIDUAL IMPEDANCE, CONNECTED IN PARALLEL AND ADAPTED TO ROTATE IN A PATH CONCENTRIC TO AND IN CLOSE PROXIMITY TO SAID FIXED PLATE ELECTRODE; (C) MEANS FOR ADVANCING A SHEET BETWEEN SAID PLATE AND PIN ELECTRODES IN THE DIRECTION OF ROTATION OF AND AT THE SAME VELOCITY AS SAID PIN ELECTRODES; (D) AN A.C. POWER SOURCE OF HIGH VOLTAGE AND ADJUSTABLE FREQUENCY FOR SAID PLATE AND PIN ELECTRODES TO PROVIDE SIMULTANEOUS, MULTIPLE ARC DISCHARGES BETWEEN SAID PLATE AND PIN ELECTRODES; AND (E) MEANS FOR REGULATING AND MAINTAINING THE SIZE OF SAID PERFORATIONS WITHIN PREDETERMINED LIMITS BY CORRESPONDINGLY ALTERING THE FREQUENCY OF SAID POWER SOURCE AS THE VELOCITY OF SAID SHEET AND PIN ELECTRODES IS CHANGED.