Electric circuit breaker with cam surfaces and wedging roller

Claim 1

AN ELECTRIC CIRCUIT BREAKER COMPRISING A CASING HAVING A FIXED CONTACT MOUNTED THEREIN, AN ELONGATED CONTACT ARM PIVOTALLY MOUNTED IN SAID CASING FOR MOVEMENT BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS, SAID CONTACT ARM HAVING A FIRST CAM SURFACE AT ONE SIDE THEREOF AND CARRYING REMOTE FROM ITS PIVOT A MOVABLE CONTACT ENGAGEBLE WITH SAID FIXED CONTACT, MEANS BIASING SAID CONTACT ARM TO OPEN CIRCUIT POSITION, A MANUALLY OPERABLE ROTARY HANDLE MEMBER PIVOTALLY MOUNTED IN SAID CASING AND MOVABLE BETWEEN "ON" AND "OFF" POSITIONS, A RELEASABLE CAM MEMBER PIVOTALLY MOUNTED IN SAID CASING COAXIALLY WITH AND CLOSELY ADJACENT SAID PIVOTALLY MOUNTED HANDLE MEMBER, SAID CAM MEMBER BEING MOVABLE BETWEEN A NORMAL LATCHED POSITION AND A RELEASED POSITION, SAID RELEASABLE CAM MEMBER HAVING A SECOND CAM SURFACE ADJACENT SAID CONTACT ARM AND CONVERGING TOWARD SAID FIRST CAM SURFACE WHEN SAID CAM MEMBER IS IN SAID LATCHED POSITION AND SAID ARM IS IN SAID OPEN CIRCUIT POSITION, AN ACTUATING LINK PIVOTALLY AND ECCENTRICALLY MOUNTED ON SAID HANDLE MEMBER AND HAVING AT ITS FREE END A CAM FOLLOWER INTERPOSED BETWEEN SAID CAM SURFACES IN WEDGING RELATION TO MOVE SAID CONTACT ARM TO CIRCUIT CLOSING POSITION AGAINST ITS BIAS WHEN SAID HANDLE MEMBER IS MOVED TO SAID "ON" POSITION, SAID HANDLE MEMBER HAVING A PORTION ENGAGING SAID RELEASABLE CAM MEMBER AND MOVING SAID CAM MEMBER FROM SAID RELEASED TO SAID LATCHED POSITION WHEN SAID HANDLE MEMBER IS MOVED FROM SAID "ON" TO SAID "OFF" POSITION.