Electrical transformer construction

Claim 1

ELECTRICAL INDUCTIVE APPARATUS COMPRISING: FIRST, AND SECOND AND THIRD WINDING STRUCTURES DISPOSED IN SPACED, ADJACENT, CONCENTRIC RELATION, RESPECTIVELY; SAID FIRST, AND SECOND AND THIRD WINDING STRUCTURES EACH HAVING A PREDETERMINED NUMBER OF CONDUCTOR TURNS FORMED OF ELECTRICALLY CONDUCTIVE STRIP MATERIAL HAVING PREDETERMINED WIDTH DIMENSIONS; SAID FIRST, SECOND, AND THIRD WINDING STRUCTURES EACH HAVING FIRST AND SECOND COAXIALLY DISPOSED END SURFACES FORMED BY THE EDGES OF SAID ELECTRICALLY CONDUCTIVE STRIP MATERIAL; FIRST AND SECOND SOLID INSULATING MEANS DISPOSED BETWEEN SAID FIRST AND SECOND WINDINGS STRUCTURES, AND BETWEEN SAID SPACE SECOND AND THIRD WINDING STRUCTURES, RESEPECTIVELY; SAID FIRST AND SECOND SOLID INSULATING MEANS HAVING FIRST AND SECOND COAXIALLY DISPOSED END PORTIONS, FIRST AND SECOND CIRCUMFERENTIALLY SPACED END PORTIONS, WHICH FORM DUCTS EXTENDING BETWEEN SAID FIRST AND SECOND COAXIALLY SPACED END PORTIONS, AND INNER AND OUTER MAJOR SURFACES WHICH HAVE AN ELECTRICALLY CONDUCTIVE MEANS DISPOSED THEREON; MEANS ELECTRICALLY CONNECTING THE ELECTRICALLY CONDUCTIVE MEANS ON SAID INNER AND OUTER MAJOR SURFACES TO THE WINDING STRUCTURE IMMEDIATELY ADJACENT THERETO; AND CAST SOLID INSULATING MEANS DISPOSED ABOUT THE FIRST AND SECOND END SURFACES OF AT LEAST SAID SECOND WINDING STRUCTURE, AND IN THE DUCTS FORMED BY THE CIRCUMFERENTIALLY SPACED END PORTIONS OF SAID FIRST AND SECOND SOLID INSULATING MEANS.