Pilot arc starting-arc working systems

Claim 1

IN AN ARC WORKING SYSTEM, AN ARC TORCH COMPRISING A MAIN ELECTRODE AND A GAS NOZZLE INSULATED FROM SAID ELECTRODE, AND MEANS FOR INITIATING A WORKING ARC BETWEEN SAID ELECTRODE AND WORK IN CIRCUIT THEREWITH, COMPRISING MEANS FOR IONIZING GAS IN SAID TORCH BETWEEN SAID NOZZLE AND SAID MAIN ELECTRODE, MEANS FOR SUPPLYING PULSES OF CURRENT TO ENERGIZE A PILOT ARC ACROSS THE SO-IONIZED GAS PATH BETWEEN SAID ELECTRODE AND NOZZLE TO FURTHER IONIZE GAS FLOWING OUT OF SAID NOZZLE AS LONG AS THE ARC TORCH IS SPACED MORE THAN A PREDETERMINED DISTANCE FROM SUCH WORK, AND MEANS ACTING AUTOMATICALLY TO DISCONTINUE SUCH PILOT ARC CURRENT PULSES WHEN THE ARC TORCH IS LOCATED CLOSE ENOUGH TO SUCH WORK TO CAUSE SUCH WORKING ARC TO BE ESTABLISHED BY THE SO-IONIZED GAS FLOWING OUT OF THE NOZZLE, COMPRISING A CAPACITOR ASSOCIATED WITH SAID PILOT ARC CURRENT PULSE SUPPLY, WHEREBY SAID CAPACITOR PRISING A DIRECT CURRENT SUPPLY, WHEREBY SAID CAPACITOR ACTS AS A CONDUCTOR UNTIL THE CAPACITOR IS FULLY CHARGED, WHEREUPON THE PILOT ARC CURRENT CEASES, AND A BLEEDER CONNECTED TO DISCHARGE SAID CAPACITOR.