Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ties, Cumberland, Susquehanna, Schuyl-kill, and Juniata valleys, Pennsylva-nia. Used for best flange Anthracite pig blooms, 850 to 851per ton of 2,240 lbs. Made from an-thracite pig in bloomary fire. Fuel generally charcoal, although coke is sometimes used. Made throughout Pennsylvania. _ Used forflange boiler-plate, the writers informant says, if the conscience of the user will permit. Theyare not as reliable in quality as No. 6. At the time the above quotations were g
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . ties, Cumberland, Susquehanna, Schuyl-kill, and Juniata valleys, Pennsylva-nia. Used for best flange Anthracite pig blooms, 850 to 851per ton of 2,240 lbs. Made from an-thracite pig in bloomary fire. Fuel generally charcoal, although coke is sometimes used. Made throughout Pennsylvania. _ Used forflange boiler-plate, the writers informant says, if the conscience of the user will permit. Theyare not as reliable in quality as No. 6. At the time the above quotations were given, forge pig was IRON-MAKING PROCESSES—PUDDLING. 183. quoted in Philadelphia at $ to , and ordinary wrought-iron bars (made in the puddlingfurnace) at from § to § per ton of 2,240 lbs. The high prices obtained for the charcoalblooms are evidence of their superior quality. The Refinery or Run-out Fire.—This may be considered as an auxiliary to either the finery or thepuddling furnace. Its object is the partial purification of the pig iron preparatory to its more com-plete purification in other furnaces. It is now but little used in the United States, but is still usedto some extent in Europe. The refinery is illustrated in Figs. 2439, 2440, and 2441, taken fromPercys Metallurgy. It consists essentially of a rectangular hearth with two or more (often three)water-tuyeres on each side, inclining downward. The sides and back are formed of hollow ironcastings called water-blocks, through which water is kept flowing, the front of a solid cast-iron platecontaining a tap-hole, and the bottom of sand resting on a solid pla
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
