Wind-box
The encircling belt of a cupola which incloses all the tuyeres. See CUPOLA.
Wind-furnaces are air-furnaces which, instead of being urged by a blast-machine, blower, or fan, depend on a natural draft, which is usually induced by connecting the flue with a long chimney, as in brass and reverberatory furnaces. See BRASS-FURNACE; REVERBERATORY FURNACE.