Electric circuit breaker having improved operating means

Claim 1

AN ELECTRIC CIRCUIT BREAKER COMPRISING A CASE, A STATIONARY CONTACT IN SAID CASE, A CONTACT ARM CARRIER PIVOTALLY MOUNTED IN SAID CASE, A BRACKET SECURED TO SAID CARRIER, A MOUNTING SCREW ADJUSTABLY MOUNTED IN SAID CARRIER AND BRACKET, SAID MOUNTING SCREW HAVING A ROUNDED HEAD PORTION, AN ELONGATED MOVABLE CONTACT ARM HAVING A PAIR OF STUDS EXTENDING FROM ONE SIDE THEREOF AND SPACED LONGITUDINALLY THEREALONG, EACH OF SAID STUDS HAVING A NUT ADJUSTABLY THREADED ON A FREE END PORTION THEREOF, ONE OF SAID STUDS EXTENDING THROUGH SAID CARRIER AND HAVING A COIL SPRING DISPOSED THEREON BETWEEN ITS ASSOCIATED NUT AND SAID CARRIER, THE OTHER OF SAID STUDS EXTENDING THROUGH SAID BRACKET AND HAVING A COIL SPRING DISPOSED THEREON BETWEEN SAID BRACKET AND THE CONTACT ARM, SAID CONTACT ARM HAVING A PORTION BETWEEN SAID STUDS ON SAID ONE SIDE IN SEATING ENGAGEMENT WITH THE HEAD OF SAID MOUNTING SCREW AND HAVING A MOVABLE CONTACT SECURED TO THE OTHER SIDE THEREOF AND MOVABLE INTO AND OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACT UPON PIVOTAL MOVEMENT OF SAID CARRIER RESPECTIVELY IN OPPOSITE DIRECTIONS.