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ducing ores or melting metals, for warming a house, for baking pottery, etc.; as, an iron furnace; a hot-air furnace; a glass furnace; a boiler furnace, etc.

A kind of furnace used in refining, to separate the metal from cinders and other foreign matter. Chambers.

A furnace or oven for fritting materials for glass making.

A reverberatory furnace with a circular revolving hearth, -- used in making steel.

A digesting furnace, formerly used by alchemists. It was so constructed as to maintain uniform and durable heat. Chambers.

all cistern at the back of a stove, or a group of pipes set in the fire box of a stove or furnace, through which water circulates and is heated.

To heat in a furnace and form into balls for rolling.

A furnace or stove in which the fuel is contained in a hopper or chamber, and is fed to the fire as the lower stratum is consumed.

na. It is largely used in the preparation of aluminium and alumina, and for the lining of furnaces which are exposed to intense heat.

etc. Hence: The continuous blowing to which one charge of ore or metal is subjected in a furnace; as, to melt so many tons of iron at a blast.

A mass of wrought iron from the Catalan forge or from the puddling furnace, deprived of its dross, and shaped usually in the form of an oblong block by shingling.

A furnace and forge in which wrought iron in the form of blooms is made directly from the ore, or (more rarely) from cast iron.

ucing an artificial blast or current of air by pressure, as for increasing the draft of a furnace, ventilating a building or shaft, cleansing gram, etc.

The round hole in the furnace of a glass manufactory through which the fused glass is taken out. Craig.

One of the sloping sides of the lower part of a blast furnace; also, one of the hollow iron or brick sides of the bed of a puddling or boiling furnace.

The front of a furnace.

ck called a clamp. The Assyrians appear to have made much less use of bricks baked in the furnace than the Babylonians. Layard.

A kiln, or furnace, in which bricks are baked or burnt; or a pile of green bricks, laid loose, with arches underneath to receive the wood or fuel for burning them.

A low wall or vertical partition in the fire chamber of a furnace, for deflecting flame, etc.; -- usually called a bridge wall. Aqueduct bridge. See Aqueduct. -- Asses' bridge, Bascule bridge, Bateau bridge. See under Ass, Bascule, Bateau. -- Bridge of a steamer (Naut.), a narrow platform across the deck, above the r…

A refractory material used as a furnace lining, obtained by calcining the cinder or slag from the puddling furnace of a rolling mill.