FURNACE n. 2 definitions
closed place in which heat is produced by the combustion of fuel, as for reducing 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.
FUSIBLE a.
CapabIe of being melted or liquefied. Fusible metal, any alloy of different metals capable of being easily fused, especially an alloy of five parts of bismuth, three of lead, and two of tin, which melts at a temperature below that of boiling water. Ure. -- Fusible plug (Steam Boiler), a piece of easily fusible alloy,…
GRAIN n.
adise, the seeds of a species of amomum. -- grain tin, crystalline tin ore metallic tin smelted with charcoal. -- Grain weevil (Zoöl.), a small red weevil (Sitophilus granarius), which destroys stored wheat and othar grain, by eating out the interior. -- Grain worm (Zoöl.), the larva of the grain moth. See grain mot…
GUM n.
actaceæ, etc.), and affording passage for gum. -- Gum pot, a varnish maker's utensil for melting gum and mixing other ingredients. -- Gum resin, the milky juice of a plant solidified by exposure to air; one of certain inspissated saps, mixtures of, or having properties of, gum and resin; a resin containing more or le…
HEARTH n.
The floor of a furnace, on which the material to be heated lies, or the lowest part of a melting furnace, into which the melted material settles. Hearth ends (Metal.), fragments of lead ore ejected from the furnace by the blast. -- Hearth money, Hearth penny Etym: [AS. heoredhpening], a tax formerly laid in England on…