Operating mechanism for enclosed circuit interrupter

Claim 1

IN COMBINATION, AN ENCLOSURE COMPRISING A CABINET THE FRONT OF WHICH IS DEFINED AS HAVING A TOP A BOTTOM AND TWO SIDES, A FIXED FRONT PORTION AT ONE SIDE OF THE FRONT OF SAID CABINET, AN OPERABLE COVER POSITIONED AT THE FRONT OF SAID CABINET, A CIRCUIT INTERRUPTER MOUNTED INSIDE OF SAID ENCLOSURE AND HAVING AN OPERATING MEMBER OPERABLE TO OPEN AND CLOSE SAID INTERRUPTER, AN EXTERNAL OPERATING HANDLE EXTENDING FROM SAID FIXED FRONT PORTION, MEANS OPERATIVELY CONNECTING SAID EXTERNAL OPERATING HANDLE TO SAID OPERATING MEMBER IN SUCH A MANNER THAT SAID OPERATIVE CONNECTION IS MAINTAINED REGARDLESS OF THE POSITION OF SAID COVER, A COVER LATCHING MECHANISM COMPRISING MANUALLY OPERABLE CAM MEANS OPERABLE FROM OUTSIDE OF SAID ENCLOSURE AND BEING OPERABLE FROM AN UNLATCHING POSITION TO A LATCHING POSITION TO CAM SAID COVER TO A FULLY CLOSED LATCHED POSITION, INTERLOCKING MEANS OPERATING TO PREVENT CLOSING OF SAID CIRCUIT INTERRUPTER WHEN SAID CIRCUIT INTERRUPTER IS OPEN AND SAID MANUALLY OPERABLE CAM MEANS IS MOVED FROM SAID LATCHING POSITION TO SAID UNLATCHING POSITION TO PERMIT OPENING OF SAID COVER, SAID INTERLOCKING MEANS ENGAGING SAID MANUALLY OPERABLE CAM MEANS TO PREVENT OPENING OF SAID COVER WHEN SAID COVER IS IN SAID FULLY CLOSED LATCHED POSITION AND SAID MANUALLY OPERABLE CAM MEANS IS IN SAID LATCHING POSITION, MEANS OPERABLE FROM OUTSIDE OF SAID ENCLOSURE WHEN SAID MANUALLY OPERABLE CAM MEANS IS IN SAID LATCHING POSITION AND SAID COVER IS IN SAID FULLY CLOSED POSITION TO DEFEAT SAID INTERLOCKING MEANS TO PERMIT OPENING OF SAID COVER.