Refractory roof and method

Claim 1

A REFRACTORY FURNACE ROOF HAVING A PLURALITY OF BASIC REFRACTORY BRICK ARRANGED SIDE BY SIDE, HAVING A HOT END AND A COLD END AND INCLUDING BRICK HAVING HANGER ATTACHMENTS AT THE COLD ENDS, FERROUS METAL CORSET PLATES IN SETS EXTENDING TRANSVERSELY OF THE ROOF, EACH SET INCLUDING CORSET PLATES IN PROLONGATION OF ONE ANOTHER, IN CONTACT WITH AND TERMINATING AT THE COLD ENDS OF THE BRICK AND EXTENDING ABOVE THE COLD ENDS OF THE BRICK GENERALLY AT RIGHT ANGLES THERETO, THE CORSET PLATES HAVING A HEIGHT AT RIGHT ANGLES TO THE COLD ENDS AT LEAST SIX TIMES THEIR THICKNESS, FERROUS METAL SUPPORTING STRUCTURE INCLUDING LONGITUDINAL HOLD-DOWN BEAMS ABOVE THE COLD ENDS OF THE BRICK, FASTENINGS FROM THE ENDS OF THE CORSET PLATES TO THE BEAMS TO SUPPORT THE CORSET PLATES, AND HANGERS FROM THE CORSET PLATES TO THE HANGER ATTACHMENTS, IN WHICH THE CORSET PLATES AT THEIR OPPOSED ENDS AND REMOTE FROM THE COLD ENDS OF THE BRICK HAVE RECESSES, AND THE BEAMS EXTEND THROUGH THE RECESSES ENGAGING THE BOTTOMS THEREOF AND ARE THEREBY SPACED FROM THE COLD ENDS OF THE BRICK.