Electric circuit breaker with overcenter acting type mechanism and contact adjustment

Claim 1

AN ELECTRIC CIRCUIT INTERRUPTER COMPRISING: (A) A SUPPORT, (B) AT LEAST ONE STATIONARY CONTACT, (C) AT LEAST ONE MOVABLE CONTACT ARM PIVOTALLY SUPPORTED ON SAID SUPPORT AND MOVABLE BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS WITH RESPECT TO SAID STATIONARY CONTACT, (D) MEANS FOR OPERATING SAID MOVABLE CONTACT ARM BETWEEN SAID OPEN AND CLOSED CIRCUIT POSITIONS COMPRISING A FIRST LINK PIVOTALLY CONNECTED TO SAID CONTACT ARM, A SECOND LINK PIVOTALLY SUPPORTED ON A BEARING NORMALLY STATIONARY WITH RESPECT TO SAID SUPPORT, SAID FIRST AND SECOND TOGGLE LINKS BEING INTERCONNECTED BY A KNEE TOGGLE PIN, (E) AN OPERATING MEMBER MOVABLY SUPPORTED ON SAID SUPPORT, (F) MEANS FOR OPERATING SAID TOGGLE LINKAGE BETWEEN COLLAPSED AND STRAIGTHENED CONDITIONS TO MOVE SAID CONTACT ARM BETWEEN SAID OPEN AND CLOSED CIRCUIT POSITIONS RESPECTIVELY COMPRISING OVERCENTER SPRING MEANS ACTING BETWEEN SAID OPERATING MEMBER AND SAID TOGGLE KNEE PIN, AND (G) MEANS SUPPORTING SAID STATIONARY CONTACT ON SAID SUPPORT COMPRISING AN ELONGATED CONTACT STRAP, (H) MEANS ATTACHE ONE END OF SAID CONTACT SUPPORTING STRAP TO SAID SUPPORT MEMBER WHILE ALLOWING LIMITED RELATIVE PIVOTAL MOVEMENT THEREBETWEEN, SAID STATIONARY CONTACT BEING MOUNTED ADJACENT THE OPPOSITE END OF SAID STRAP, (I) MEANS ATTACHING SAID OPPOSITE END OF SAID STRAP TO SAID SUPPORT COMPRISING AT LEAST ONE SET SCREW THREADEDLY ENGAGED IN SAID SUPPORTING STRAP AND INCLUDING AN END PORTION BEARING AGAINST SAID SUPPORT MEMBER WHEREBY TO ADJUSTABLY SPACE SAID SECOND END FROM SAID SUPPORT MEMBER AND TO DIRECTLY TRANSMIT FORCE EXERTED ON SAID RELATIVELY MOVABLE STATIONARY CONTACT ON SAID SUPPORT MEMBER, (J) AND SEPARAT SCREW THREADED ATTACHING MEANS ATTACHING SAID SECOND END OF SAID CONTACT STRAP TO SAID CONTACT SUPPORTING MEMBER ADJACENT SAID SET SCREW.