Melting-furnace
The cupola and reverberatory are the iron-foundry melting-furnaces; the crucible air-furnace, forced-draught, and reverberatory are the brass-founders' and steel-melters.' A reverberatory furnace is employed by glass-makers for calcining the materials, and crucible or "glass furnaces" to melt the glass. The application of the Siemens regenerative process is becoming general for all these purposes, excepting for iron-foundries, and a considerable saving in fuel is effected wherever this system obtains. See FURNACES.