Operating mechanism for enclosed circuit interrupters

Claim 1

IN A COMBINATION, A CIRCUIT INTERRUPTER HAVING A MOVABLE OPERATING MEMBER FOR OPENING AND CLOSING THE INTERRUPTER, AN ENCLOSURE IN WHICH THE INTERRUPTER IS MOUNTED SAID CLOSURE HAVING AN OPENABLE TOP COVER WITH A CATCH THEREON AND SIDE WALLS, MEANS DISPOSED IN SAID ENCLOSURE FOR ACTUATING SAID OPERATING MEMBER TO OPEN AND CLOSE SAID INTERRUPTER, AN EXTERNAL OPERATING MEMBER ROTATABLY MOUNTED ON ONE OF SAID SIDE WALLS AND CONNECTED TO SAID ACTUATING MEANS, AN INTERLOCKING MEMBER SLIDABLY SUPPORTED ADJACENT TO ONE END THEREOF ON SAID ONE OF SAID SIDE WALLS ADJACENT TO THE CATCH, MEANS DISPOSED ON SAID ONE OF SAID WALLS FOR BIASING A PORTION OF THE INTERLOCKING MEMBER ADJACENT THE OTEHR END OF THE INTERLOCKING MEMBER UPWARDLY TO BEAR AGAINST SAID COVER WHEN SAID COVE IS CLOSED, SAID EXTERNAL OPERATING MEMBER HAVING A PORTION EXTENDING THROUGH THE SIDE WALL TO DRIVE SAID INTERLOCKING MEMBER GENERALLY PARALLEL TO SAID COVER INTO ENGAGEMENT WITH SAID CATCH ON THE COVER TO PREVENT OPENING OF THE COVER WHEN THE INTERRUPTER IS CLOSED, AND A PROJECTING MEMBER DISPOSED ON SAID ONE OF SAID WALLS TO BE ENGAGED BY A PORTION OF SAID INTERLOCKING MEMBER ADJACENT SAID OTHER END OF SAID INTERLOCKING MEMBER WHEN THE COVER IS OPENED TO PERMIT UPWARD MOVEMENT OF SAID OTHER END OF SAID INTERLOCKING MEMBER TO THEREBY PREVENT SLIDING MOVEMENT OF SAID INTERLOCKING MEMBER AND THE LOCKING OF SAID INTERRUPTER.