Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 353
1424. HOPPER AND BELL, for a blast or other furnace, for feeding coal andore. The hopper is filled with a charge,when the bell is quickly lowered and thecharge drops into the furnace. 1425. BESSEMER STEEL CONVERTER.—^ A large crucible on trunnions, through which air isblown to passages in the…
Mechanical movements
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