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Nose hammer (Mach.), a frontal hammer. -- Nose hole (Glass Making), a small opening in a furnace, before which a globe of crown glass is held and kept soft at the beginning of the flattening process. -- Nose key (Carp.), a fox wedge. -- Nose leaf (Zoöl.), a thin, broad, membranous fold of skin on the nose of many sp…

end. -- Open flank (Fort.), the part of the flank covered by the orillon. -- Open-front furnace (Metal.), a blast furnace having a forehearth. -- Open harmony (Mus.), harmony the tones of which are widely dispersed, or separated by wide intervals. -- Open hawse (Naut.), a hawse in which the cables are parallel or s…

Metal; as, the liquid ore. [R.] Milton. Ore hearth, a low furnace in which rich lead ore is reduced; -- also called Scotch hearth. Raymond.

e or more mines, or the quantity of material produced by, or turned out from, one or more furnaces or mills, in a given time.

e under Masked. -- Pig bed (Founding), the bed of sand in which the iron from a smelting furnace is cast into pigs. -- Pig iron, cast iron in pigs, or oblong blocks or bars, as it comes from the smelting furnace. See Pig, 4. -- Pig yoke (Naut.), a nickname for a quadrant or sextant. -- A pig in a poke (that is, bag…

ither as a pistol or a carbine. -- Pistol pipe (Metal.), a pipe in which the blast for a furnace is heated, resembling a pistol in form. -- Pistol shot. (a) The discharge of a pistol. (b) The distance to which a pistol can propel a ball.

A furnace for producing combustible gas which is used for fuel.

The lump of pasty wrought iron as taken from the puddling furnace to be hammered or rolled.

t iron or steel by subjecting it to intense heat and frequent stirring in a reverberatory furnace in the presence of oxidizing substances, by which it is freed from a portion of its carbon and other impurities. Puddling furnace, a reverberatory furnace in which cast iron is converted into wrought iron or into steel by…

he pulse; to raise the voice; to raise the spirits or the courage; to raise the heat of a furnace.

e raw material of the shoe industry. -- Raw pig, cast iron as it comes from the smelting furnace.

a & n. from Reduce. Reducing furnace (Metal.), a furnace for reducing ores. -- Reducing pipe fitting, a pipe fitting, as a coupling, an elbow, a tee, etc., for connecting a large pipe with a smaller one. -- Reducing valve, a device for automatically maintaining a diminished pressure of steam, air, gas, etc., in a pip…

A furnace in which cast iron is refined by the action of a blast on the molten metal.

generation; tending to regenerate; as, regenerative influences. H. Bushnell. Regenerative furnace (Metal.), a furnace having a regenerator in which gas used for fuel, and air for supporting combustion, are heated; a Siemens furnace.

A device used in connection with hot-air engines, gas-burning furnaces, etc., in which the incoming air or gas is heated by being brought into contact with masses of iron, brick, etc., which have been previously heated by the outgoing, or escaping, hot air or gas.

A lid, stopper, or sliding plate, in a furnace, stove, etc., for regulating the admission of air to the fuel; also, an arrangement containing dampers or shutters, as in the floor or wall of a room or passage, or in a chimney, for admitting or excluding heated air, or for regulating ventilation.

To send or force back; to repel from side to side; as, flame is reverberated in a furnace.

rays from a mirror; the reverberation of voices; the reverberation of heat or flame in a furnace.

Producing reverberation; acting by reverberation; reverberative. Reverberatory furnace. See the Note under Furnace.

A revolving reverberatory furnace.