Gas blast circuit breaker with nozzle formed contacts and control for associated gasoutlet valves

Claim 1

IN AN ELECTRICAL CIRCUIT BREAKER OF THE GAS BLAST TYPE, THE COMBINATION COMPRISING A CASING FORMING THEREIN AN INTERRUPTION CHAMBER WHICH IS GAS-PRESSURIZED AND AT A HIGH POTENTIAL, A PAIR OF NOZZLE TYPE CONTACT MEMBERS LOCATED IN SAID INTERRUPTION CHAMBER, A NORMALLY CLOSED OUTLET VALVE INDIVIDUAL TO AND WHICH SERVES WHEN OPENED TO PLACE THE INTERIOR OF EACH SAID NOZZLE CONTACT MEMBER IN COMMUNICATION WITH THE OPEN AIR EXTERIORLY OF SAID CASING, FIRST ACTUATING MEANS AT EARTH POTENTIAL FOR ACTUATING ONE OF SAID CONTACT MEMBERS TO EFFECT ITS DISENGAGEMENT FROM THE OTHER CONTACT MEMBER AND TO SIMULTANEOUSLY OPEN SAID OUTLET VALVE CORRELATED TO SAID ACTUATED CONTACT MEMBER, AND SAID SECOND ACTUATING MEANS FOR OPERATING THE OTHER OUTLET VALVE CORRELATED TO SAID OTHER CONTACT MEMBER TO ITS OPEN POSITION UPON DISENGAGEMENT OF SAID CONTACT MEMBERS, SAID SECOND ACTUATING MEANS INCLUDING A DRIVING MEMBER OF INSULATING MATERIAL AND A MEMBER DRIVEN THEREBY WHOSE MOVEMENT CONTROLS OPENING AND CLOSING OF SAID OTHER OUTLET VALVE, SAID DRIVING AND DRIVEN MEMBERS BEING LOCATED IN SAID INTERRUPTION CHAMBER AND BEING NORMALLY MAINTAINED IN SPACED RELATION TO THEREBY ESTABLISH A GAS-PRESSURIZED INSULATING GAP THEREBETWEEN, AND MEANS CONTROLLING MOVEMENT OF SAID DRIVING MEMBER BY OPERATION OF SAID FIRST ACTUATING MEANS TO EFFECT A BRIEF DRIVING ENGAGEMENT AS BETWEEN SAID DRIVING AND DRIVEN MEMBERS THEREBY TO EFFECT A BRIEF OPENING OF SAID OTHER OUTLET VALVE.