Electrical fuse-disconnect switch boxes

Claim 1

AN ELECTRICAL FUSE-DISCONNECT BOX COMPRISING: (A) A SWITCH BOX HAVING A POWER-RECEIVING END, WHICH IS ADAPTED TO RECEIVE AN INCOMING ELECTRICAL POWER LINE; (B) INSULATEDLY-MOUNTED MEANS IN THE BOX FOR TRANSMITTING INCOMING ELECTRICAL POWER (1) FROM A POWER-RECEIVING TERMINAL ADJACENT SAID POWER-RECEIVING END TO ONE SWITCH CONTACT, (A) WHICH HAS AN OUTER SIDE CORRESPONDING TO SAID POWER-RECEIVING END OF THE BOX AND AN OPPOSITE INNER SIDE, AND (2) FROM ANOTHER SWITCH CONTACT THROUGH A SAFETY FUSE TO A POWER-RECEIVING END OF THE BOX AND (C) A SWITCH BLADE ASSEMBLY HAVING (1) A SWITCH BLADE FOR CLOSING AND OPENING AN ELECTRICAL CONNECTION BETWEEN SAID SWITCH CONTACTS, AND (2) A SHAFT FOR OPERATING SAID SWITCH BLADE; (D) MEANS FOR SELECTIVELY MOUNTING SAID BOX (1) IN ONE INSTALLATION, UPRIGHT UPON A WALL WITH ITS POWER-RECEIVING END UPPERMOST, AND (2) IN ANOTHER INSTALLATION, UPSIDE DOWN UPON A WALL WITH ITS POWER-RECEIVING END LOWERMOST; AND (E) MEANS FOR REMOVABLY MOUNTING SAID SWITCH BLADE ASSEMBLY SELECTIVELY UPON SAID BOX FOR UPWARD SWITCH-CLOSING AND DOWNWARD SWITCH-OPENING MOVEMENTS, (1) IN ONE POSITION, WHEN THE BOX IS UPRIGHT, WITH SAID OPERATING SHAFT LOCATED BELOW THE INNER SIDE OF SAID ONE CONTACT, AND (2) IN ANOTHER POSITION, WHEN THE BOX IS UPSIDE DOWN, WITH SAID OPERATING SHAFT LOCATED BELOW SAID OUTER SIDE OF SAID ONE CONTACT.