Dynamoelectric machine with liquidcooled excitation supply means

Claim 1

IN A GENERATOR OF THE TYPE HAVING AN EXCITER ALTERNATOR FURNISHING A REGULATED A.C. SUPPLY VOLTAGE FROM A ROTATING EXCITER ARMATURE, THE COMBINATION OF A ROTOR HAVING A GENERATOR FIELD WINDING THEREON, A PAIR OF ELECTRICALLY CONDUCTIVE INSULTED RING MEMBERS MOUNTED TO TURN WITH THE ROTOR SHAFT, SAID RING MEMBERS HAVING ANNULAR PORTIONS RADIALLY SPACED FROM THE ROTOR SHAFT AND DEFINING GAS-TIGHT INTERNAL COOLING PASSAGES, LEAD-IN CONDUCTOR MEANS FORMING A SERIES CONNECTION FROM ONE SAID RING MEMBER THROUGH SAID FIELD WINDING TO THE OTHER SAID WINDINGS, THE LEAD-IN CONDUCTOR MEANS, AND THE RING MEMBER COOLING PASSAGES, A PLURALITY OF RECTIFIER MEANS MOUNTED ON THE RADIALLY INNER SIDE OF SAID COOLED ANNULAR PORTIONS OF THE RING MEMBERS AND ELECTRICALLY CONNECTED THERETO, SAID RECTIFIER MEANS BEING FURNISHED WITH A REGULATED A.C. SUPPLY VOLTAGE, WHEREBY THE RING MEMBERS SERVE BOTH TO COOL AND SUPPORT THE RECTIFIER MEANS WHILE ALSO SERVING AS ELECTRICAL D.C. SUPPLY BUSES FOR THE FIELD WINDINGS.