Appleton's dictionary of machines, mechanics, engine-work, and engineering (1869)
New York, Appleton · leaf 125
t.In this way, plate after plate, weighing from 25 to 50 lbs. each, is formed in intervals of hardly a minute.Only gray iron, from fusible materials, will chill in this way. The plates thus made are roasted, i. c,exposed for 10 or 12 hours to a red-heat, either in an appropriate oven or in an open…
Mechanical engineering
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