(under subclass 45) Subject matter having one of the electrodes pivotally mounted in a support.
SEE OR SEARCH THIS CLASS, SUBCLASS:
39, for consumable electrode discharge devices provided with means to either (a) oscillate one of the electrodes across the end of the other electrode, and/or (b) to rotate one of the electrodes about an axis which is either concentric or eccentric with an axis of the electrode.