nd the one opposite, being made it sinks into the tub, is met by the by the Scaife Foundry and Machine upward current of the water; the good coal being lighter in weight Company, Ltd., of Pittsburgh. In this case the body of the washer is than the impurities, is forced upwards, a rigid, almost… … THE SCAIFE COAL WASHER. TROUGH LOWERED. direction of arrows turned downward, side is strengthened somewhat to facili- and ^are collected in the chamber J. tate the discharge of impurities. Inside it has a series of fixed dams or partitions, When this is filled, the upper valve H which can be…
Engineering
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