Three leg fractional turn transformer with winding leads and insulation between core parts

Claim 1

A TRANSFORMER COMPRISING: A RECTANGULAR MAGNETIC CORE STRUCTURE HAVING A CENTRAL WINDING LEG, END LEGS JOINED TO SAID CENTER LEG, AND SIDE LEGS RESPECTIVELY JOINED TO SAID END LEGS AND SPACED FROM SAID CENTER LEG TO DEFINE COIL-RECEIVING WINDOWS THEREWITH; SAID CORE BEING FORMED OF A TRANSVERSELY STACKED PLURALITY OF RELATIVELY THIN LAMINATIONS OF MAGNETIC MATERIAL IN AT LEAST TWO TRANSVERSELY SPACED GROUPS OF PREDETERMINED RELATIVE TRANSVERSE HEIGHT; INSULATING MEANS RESPECTIVELY SPACING SAID GROUPS AND EACH COMPRISING FIRST INSULATORS RESPECTIVELY IN ALIGNMENT WITH THE LAMINATIONS FORMING SAID SIDE LEGS AND A SECOND INSULATOR IN ALIGNMENT WITH THE LAMINATIONS FORMING SAID CENTER LEG, SAID SECOND INSULATOR HAVING ONE END THEREOF SPACED FROM THE OUTER SIDE OF THE LAMINATIONS FORMING ONE OF SAID END LEGS AND DEFINING A SLOT THEREWITH PARALLEL WITH SAID LAMINATIONS; A FIRST COIL ON SAID CENTER LEG HAVING SIDES EXTENDING THROUGH SAID WINDOWS AND ENDS DISPOSED ON OPPOSITE FACES OF SAID CENTER LEG, SAID FIRST COIL HAVING A PREDETERMINED NUMBER OF FULL TURNS SURROUNDING SAID CENTER LEG; AND A SECOND COIL ON SAID CENTER LEG HAVING SIDES EXTENDING THROUGH SAID WINDOWS AND ENDS DISPOSED ON OPPOSITE FACES OF SAID CENTER LEG, SAI SECOND COIL HAVING A PREDETERMINED NUMBER OF FULL TURNS SURROUNDING SAID CENTER LEG; SAID COILS SUBSTANTIALLY FILLING SAID WINDOWS; SAID SECOND COIL HAVING A LEAD WHICH STARTS ON THE END THEREOF DISPOSED ON ONE FACE OF SAID CENTER LEG AND WHICH EXTENDS INTO ONE OF SAID WINDOWS, UPWARDLY FROM SAID ONE WINDOW THROUGH THE SPACE BETWEEN THE LAMINATIONS OF SAID ONE END LEG DEFINED BY SAID INSULATING MEANS, THROUGH SAID SLOT OVER SAID ONE END OF SAID SECOND INSULATOR, DOWNWARDLY THROUGH THE SPACE BETWEEN THE LAMINATIONS OF SAID ONE END LEG DEFINED BY SAID INSULATING MEANS AND INTO THE OTHER OF SAID WINDOWS, AND OUT OF SAID OTHER WINDOW ON THE SIDE THEREOF ON SAID ONE FACE OF SAID CENTER LEG WHEREBY SAID LEAD OF SAID SECOND WINDING EXTENDS TRANSVERSELY ACROSS THE LAMINATIONS OF SAID ONE END LEG OF ONLY ONE OF SAID GROUPS OF LAMINATIONS THEREBY FORMING A TURN ON SAID SECOND COIL WHICH IS A FRACTION OF A FULL TURN THEREOF IN THE SAME PROPORTION AS THE TRANSVERSE HEIGHT OF SAID ONE GROUP OF LAMINATIONS TO THE TOTAL TRANSVERSE HEIGHT OF ALL OF SAID GROUPS.