Pushbutton-controlled polyphase overload circuit breaker

Claim 1

A POLYPHASE OVERLOAD CIRCUIT BREAKER COMPRISING A HOUSING, FIRST AND SECOND TERMINAL MEANS IN SAID HOUSING FOR EACH CIRCUIT WITH RESPECTIVE FIRST AND SECOND CONTACTS LOCATED IN SPACED RELATIONSHIP, SAID FIRST TERMINAL MEANS INCLUDING A BIMETALLIC STRIP WHICH IS BENDABLE UPON CHANGES IN CURRENT LOAD, A CONTROL BRIDGE, SPRING MEANS BIASING SAID CONTROL BRIDGE, A CONTACT BRIDGE FOR EACH CIRCUIT CONNECTED TO SAID CONTROL BRIDGE, MEANS INSULATING SAID CONTACT BRIDGES FROM EACH OTHER, SAID CONTACT BRIDGES BEING DISPOSED FOR ENGAGEMENT AND DISENGAGEMENT WITH THE RESPECTIVE FIRST AND SECOND CONTACTS OF RESPECTIVE FIRST AND SECOND TERMINAL MEANS UPON MOVEMENT OF SAID CONTROL BRIDGE FOR COMPLETING AND DISCONNECTING THE RESPECTIVE CIRCUITS, LOCKING MEANS ENGAGEABLE WITH SAID CONTROL BRIDGE FOR SECURING SAID BRIDGE IN AN OPERATIVE POSITION, SAID LOCKING MEANS INCLUDING A PIVOTAL MEMBER DISPOSED ADJACENT ALL OF THE SAID BIMETALLIC ELEMENTS FOR EACH CIRCUIT AND BEING DISPLACEABLE, UPON BENDING OF ANY ONE OF SAID BIMETALLIC ELEMENTS, DUE TO CURRENT OVERLOAD TO RELEASE SAID BRIDGE, SAID SPRING MEANS BIASING SAID BRIDGE CAUSING DISPLACEMENT OF SAID BRIDGE UPON RELEASE THEREOF BY LOCKING MEANS TO MOVE THE CONTACT BRIDGES CARRIED THEREBY OUT OF ENGAGEMENT WITH THE RESPECTIVE FIRST AND SECOND TERMINALS, AND A PUSH BUTTON SLIDABLE IN SAID HOUSING TOWARD AND AWAY FROM SAID CONTROL BRIDGE AND ENGAGEABLE WITH SAID CONTROL BRIDGE TO MOVE SAID CONTROL BRIDGE INTO AN OPERATIVE POSITION AGAINST SAID BIASING MEANS INTO LOCKING ENGAGEMENT WITH SAID LOCKING MEANS.