Buck boost transformer voltage controller with tap changing transformer system

Claim 1

IN A TAP CHANGING SYSTEM FOR TRANSFORMERS, A FIRST TRANSFORMER WINDING CONNECTED TO A SOURCE OF ALTERNATING POTENTIAL, A SECOND TRANSFORMER WINDING HAVING A PLURALITY OF TAP CONNECTIONS WITH SUBSTANTIALLY THE SAME POTENTIAL DIFFERENCE BETWEN ADJACENT TAP CONNECTIONS, A BRIDGING REACTOR HAVING FIRST AND SECOND COIL SECTIONS, AUTOTRANSFORMER MEANS HAVING A PLURALITY OF TAP CONNECTIONS, A THIRD TRANSFORMER WINDING CONNECTED TO TAP CONNECTIONS OF SAID AUTOTRANSFORMER MEANS, SWITHCING MEANS FOR SELECTIVELY AND SEQUENTIALLY CONNECTING ONE END OF EACH OF SAID FIRST AND SECOND COIL SECTIONS OF SAID BRIDGING REACTOR TO THE SAME OR ADJCENT TAP CONNECTIONS OF SAID SECOND TRANSFORMER WINDING, THE OTHER ENDS OF SAID FIRST AND SECOND COIL SECTIONS OF SAID BRIDGING REACTOR BEING CONNECTED TO TAPS ON SAID AUTOTRANSFORMER MEANS SUCH THAT A POTENTIAL IS APPLIED TO SAID BRIDGING REACTOR THAT IS SUBSTANTIALLY ONE-HALF THE POTENTIAL BETWEEN ADJACENT TAP CONNECTIONS OF SAID SECOND TRANSFORMER WINDING AND OF SUCH POLARITY AS TO LIMIT THE TOTAL POTENTIAL ACROSS SAID BRIDGING REACTOR TO SUBSTANTIALLY ONE-HALF THE POTENTIAL BETWEEN ADJACENT TAP CONNECTIONS OF SAID SECOND TRANSFORMER WINDING, INDEPENDENTLY OF WHETHER SAID SWITCHING MEANS CONNECTS SAID FIRST AND SECOND COIL SECTIONS OF SAID BRIDGING REACTOR TO THE SAME OR ADJACENT TAP CONNECTIONS OF SAID SECOND TRANSFORMER WINDING.