Electrolytic grinding apparatus

Claim 1

IN ELECTROLYTIC GRINDING APPARATUS, IN COMBINATION A WORK-SUPPORT AND ROTATABLE GRINDING WHEEL MEANS HAVING Q PLURALITY OF CONDUCTIVE PARTS INSULATED FROM EACH OTHER EACH PART HAVING A CONDUCTIVE FACE AND WITH MENS MOUNTING SAID WORK-SUPPORT AND SAID WHEEL MEANS IN COACTING RELATION FOR OPERATIVELY RELATING A WORKPIECE SUPPORTED BY THE WORK-SUPPORT TO THE CONDUCTIVE FACE OF SAID CONDUCTIVE PART, MEANS FOR SUPPLYING LIQUID ELECTROLYTE TO THE INTERFACE BETWEEN THE WORK-PIECE AND SAID CONDUCTIVE FACES FOR ELECTROLYTIC DECOMPOSTION AT THE WORK-PIECE FACE, A SATURABLE-CORE MAGNETIC AMPLIFIER HAVING POWER WINDING MEANS ENERGIZABLE BY ALTERNATING CURRENT AND HAVING RECTIFIER MEANS IN CIRCUIT THEREWITH TO PROVIDE UNIDIRECTIONAL CURRENT AT THE OUTPUT TERMINALS THEREOF AND HAVING ELECTRO-MAGNETIC MEANS FOR CHANGING THE MAGNETIC CORE SATURATION, A SATURABLE-CORE CONTROL MAGNETIC AMPLIFIER HAVING POWER WINDING MEANS ENERGIZABLE BY ALTERNATING CURRENT AND HAVING RECTIFIER MEANS IN CIRCUIT THEREWIHT TO PROVIDE UNIDIRECTIONAL CURRENT FOR ENERGIZING SAID ELECTRO-MAGNETIC MEANS OF SAID FIRST MAGNETIC AMPLIFIER TO CONTROL THE LATER AND HAVING CONTROL WINDING MEANS FOR AFFECTING ITS OWN CORE SATURATION, A PLURALITY OF SUPPLY CIRCUITS, ONE FOR EACH OF SAID INTERFACE EXTENDING FROM SAID OUTPUT TERMINALS BY MEANS CONNECTPIECE AND BY A PLURALITY OF MEANS CONNECTING THE NEGATIVE SIDE THEREOF RESPECTIVELY TO SAID CONDUCTIVE WHEEL FACES AND THEREBY FORMING A PLURALITY OF PARALLEL ELECTROLYTIC DECOMPOSTION CIRCUITS, MEANS COMPRISING A RECTIFIER BRIDGE ENERGIZED BY ALTERNATING CURENT AND PROVIDING AT ITS OUTPUT A SELECTABLE UNIDIRECTIONAL REFERENCE VOLTAGE MEAND DEPENDENT UPON THE VOLTAGE SUPPLIED TO SAID SUPPLY CIRCUITS BY SAID FIRST-MENTIONED MAGNETIC AMPLIFIER AND UPON SAID REFERENCE VOLTAGE FOR ENERGIZING SAID CONTROL