High voltage potential transformer

Claim 1

A POTENTIAL TRANSFORMER COMPRISING A PYRAMIDAL TYPE HIGH VOLTAGE WINDING, A LEAD ELECTRICALLY CONNECTED TO AND EXTENDING OUTWARDLY FROM SAID HIGH VOLTAGE WINDING A FIRST SHIELDING MEMBER FORMED FROM CONDUCTING MATERIAL AND CONNECTED TO SAID LEAD DISPOSED TO SUBSTANTIALLY SURROUND SAID HIGH VOLTAGE WINDING AND SAID LEAD, SOLID INSULATION SUBSTANTIALLY SURROUNDING SAID HIGH VOLTAGE WINDING, LEAD, AND FIRST SHIELDING MEMBER, A SECOND SHIELDING MEMBER FORMED FROM CONDUCTING MATERIAL AND CONNECTED TO GROUND POTENTIAL DISPOSED TO SUBSTANTIALLY SURROUD IN A CLOSE FITTING MANNER AT LEAST THE MAJOR PORTION OF SAID SOLID INSULATION, AND AN INTERMEDIATE SHIELDING MEMBER HAVING LOWER AND UPPER PORTIONS FORMED FROM CONDUCTING MATERIAL DISPOSED TO SURROUND SAID HIGH VOLTAGE WINDING AND AT LEAST A PORTION OF SAID LEAD, RESPECTIVELY, SAID LOWER PORTION OF SAID INTERMEDIATE SHIELDING MEMBER BEING EMBEDDED IN SAID SOLID INSULATION SUBSTANTIALLY HALFWAY BETWEEN SAID FIRST AND SECOND SHIELDING MEMBERS AND INTERPOSING AND DIVIDING SAID HIGH VOLTAGE WINDING INTO TWO SECTIONS, SAID INTERMEDIATE SHIELDING MEMBER BEING ELECTRICALLY CONNECTED TO SAID HIGH VOLTAGE WINDING AT A POINT INTERMEDIATE THE START AND FINISH OF SAID HIGH VOLTAGE WINDING, WITH THE POINT ON SAID HIGH VOLTAGE WINDING BEING SELECTED TO OBTAIN A POTENTIAL WHICH PROVIDES THE MAXIMUM REDUCTION IN POTENTIAL GRADIENT AT SAID FIRST SHIELDING MEMBER, SAID UPPER PORTION OF SAID INTERMEDIATE SHIELDING MEMBER BEING POSITIONED CLOSER TO SAID FIRST SHIELDING MEMBER THAN TO SAID SECOND SHIELDING MEMBER TO PRODUCE A CAPACITANCE RELATIONSHIP BETWEEN SAID SHIELDING MEMBERS THAT WOULD FORCE SAID INTERMEDIATE SHIELDING MEMBER TO ASSUME THE SAME POTENTIAL THAT SAID INTERMEDIATE SHIELDING MEMBER HAS ASSUMED DUE TO ITS BEING CONNECTED TO THE SELECTED POINT OF THE HIGH VOLTAGE WINDING.