Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . e of about 800° is obtained, and the condition of the furnace iscompletely under the control of the puddler, who by arranging the blast-valves obtains either anoxidizing or reducing flame, as the condition of the iron may require. The puddling basin rests on abrick pillar 1 ft. 4 in. from the ground. On this is set a wrought-iron circular open dish, with sidesabout 4 in. deep. Within this dish 8 or more friction-balls, 5 in. in diameter, are placed at equal dis-tances from each other.
Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts . e of about 800° is obtained, and the condition of the furnace iscompletely under the control of the puddler, who by arranging the blast-valves obtains either anoxidizing or reducing flame, as the condition of the iron may require. The puddling basin rests on abrick pillar 1 ft. 4 in. from the ground. On this is set a wrought-iron circular open dish, with sidesabout 4 in. deep. Within this dish 8 or more friction-balls, 5 in. in diameter, are placed at equal dis-tances from each other. On these spheres two cast-iron semicircular plates are laid; on these plates IRON-WORKING MACHINERY. 195 again four side or segment plates are bolted together externally by means of wrought-iron pins, form-ing a complete circle. Upon these are placed, loosely, the shelf or table plates which, resting uponbrackets fixed to the rail buckstaves, support the walls of the furnace. The dish below being keptfull of water, the evaporation produced from the heat above cools the bottom and sides, and conse- quently the fettling. By the absence of inequalities and corners, its shapedoes away with the difficulty usually attending the working of a mechanicalrabble, at the same time effecting a considerable saving in fettling. Thepuddling machine is fixed over the furnace, and rests on four old rails,which serve as buckstaves on each side of the doors. It is driven by a small double-actingengine, to which it is attached, and the movement is precisely similar to that of the puddler, the rab-bles on either side of the furnace being easily changed during the heat. The arms are connectedby means of spring driving-rods, which protect the machine from any strain that may be caused bythe rabbles. The furnace is worked in the following way: The preparatory chamber, besides heating the pigs,serves as a neck to the furnace, as soon as the iron is melted. The rabbles, which are so set thatthey
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Keywords: ., bookauthorbenjaminpark18491922, bookcentury1800, bookdecade1880
