. Appleton's dictionary of machines, mechanics, engine-work, and engineering. hearth, a, of the furnace, reaching to the fire-bridge, b, their mouth extending to c. The muffles areclosed by a clay slab at the mouth, in which there are two openings, one at the bottom for the charge anddischarge of the ore, and one at the top for inserting an iron pipe which is to conduct the vapors of thedistilled zinc to the condensing vessel. The vapors of zinc are conducted into cold water, in which itcondenses and forms grains ; these are afterwards remelted in an iron pot. One reverberatory containsfive mu
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. hearth, a, of the furnace, reaching to the fire-bridge, b, their mouth extending to c. The muffles areclosed by a clay slab at the mouth, in which there are two openings, one at the bottom for the charge anddischarge of the ore, and one at the top for inserting an iron pipe which is to conduct the vapors of thedistilled zinc to the condensing vessel. The vapors of zinc are conducted into cold water, in which itcondenses and forms grains ; these are afterwards remelted in an iron pot. One reverberatory containsfive muffles, and a double furnace ten. To produce one ton of metal, 10, and from that to 12, tons ofbituminous coal are consumed, and one muffle will last for making nearly one ton and a half of zinc. Zinc is a useful metal, if it can be obtained at reasonable prices; it is indispensable in the chemicallaboratory, and is very useful in architecture for roofing and for ornaments. Its most important appli-cation is, however, in combination with copper, as brass, of which a great v
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
