Circuit breaker interrupter

Claim 1

AN OIL IMMERSED CIRCUIT BREAKER INTERRUPTER COMPRISING A PLURALITY OF INTERRUPTER PLATES OF INSULATING MATERIAL SUPPORTED IN AN AXIAL SPACED RELATION, EACH OF SAID PLATES HAVING AN OPENING ALIGNED WITH THE OTHER OPENINGS OF OTHER INTERRUPTER PLATES AND DEFINING AN AXIAL PATH FOR RECEIVING A MOVABLE ELECTRODE ASSEMBLY THERETHROUGH, SAID INTERRUPTER PLATES ALSO DEFINING VERTICAL PORTS FOR TRANSMITTING GASES AND OIL THERETHROUGH IN AN UPWARD DIRECTION FROM A LOWER REGION; A STATIONARY CONTACT ASSEMBLY MOUNTED AXIALLY OF SAID PLATES AND HAVING ONE OR MORE CONTACT FINGER MEMBERS DISPOSED ADJACENT SAID AXIAL PATH AND BIASED INWARDLY TO PARTIALLY OBSTRUCT SAID PATH; A MOVABLE ELECTRODE ASSEMBLY SUPPORTED FOR AXIAL MOVEMENT THROUGH SAID OPENINGS IN SAID PLATES, SAID ASSEMBLY INCLUDING AN INSULATING PIN MEMBER MOUNTED AXIALLY AT THE END OF AN ELECTRICALLY CONDUCTIVE ELECTRODE; ONE OF SAID INTERRUPTER PLATES HAVING AN ARC-RESTRICTIVE OPENING APPROXIMATELY EQUAL IN CROSS SECTION BUT SLIGHTLY GREATER AND COMPLEMENTARY TO THE CROSS SECTION OF SAID ELECTRODE, THE ONE INTERRUPTER PLATE BEING DISPOSED INTERMEDIATE INTERRUPTER PLATES HAVING OPENINGS SUBSTANTIALLY GREATER IN CROSS SECTION THAN SAID ELECTRODE AND CAPABLE OF PASSING AND EXTENDING A GASEOUS ARE THERETHROUGH; WHEREBY SAID ELECTRODE