Electric circuit breaker with toggle positioning means

Claim 1

AN ELECTRIC CIRCUIT BREAKER COMPRISING: (A) AN INSULATING CASING, (B) AT LEAST ONE STATIONARY CONTACT MOUNTED IN SAID INSULATING CASING, (C) AN ELONGATED MOVABLE CONTACT ARM PIVOTALLY SUPPORTED IN SAID INSULATING CASING AND CARRYING A MOVABLE CONTACT MEMBER MOVABLE BY SAID CONTACT ARM INTO AND OUT OF ENGAGEMENT WITH SAID STATIONARY CONTACT, (D) OPERATING MEANS IN SAID CASING FOR OPERATING SAID CONTACT ARM BETWEEN OPEN AND CLOSED CIRCUIT POSITIONS COMPRISING A MECHANISM FRAME FIXEDLY MOUNTED IN SAID CASING AND A RELEASABLE CRADLE MEMBER PIVOTALLY MOUNTED ON SAID FRAME, (E) A PAIR OF TOGGLE LINKS INTERCONNECTING SAID CRADLE MEMBER AND SAID MOVABLE CONTACT ARM, SAID TOGGLE LINKS COMPRISING A PAIR OF UPPER TOGGLE LINKS AND A PAIR OF LOWER TOGGLE LINKS INTERCONNECTED BY A KNEE PIN, (F) A MANUALLY OPERABLE HANDLE MEMBER SUPPORTED IN SAID CASING, (G) A TENSION SPRING INTERCONNECTING SAID HANDLE MEMBER AND SAID KNEE PIN OF SAID TOGGLE LINKAGE, (H) RECIPROCAL MOVEMENT OF SAID HANDLE MEMBER CAUSING COLLAPSING AND STRAIGHTENING MOVEMENT OF SAID TOGGLE LINKAGE, (I) SAID UPPER TOGGLE LINKS HAVING A PORTION ENGAGING SAID FRAME AND RESTRAINING SAID TOGGLE LINKS IN A PARTIALLY COLLAPSED CONDITION FOLLOWING RELEASE OF SAID RELEASABLE CRADLE MEMBER.