s object is to enable the teacher so to arrange passes into the slag, and in this manner the metal is revolve by turning the gears, G and G2, by means of the the clock as to indicate, by the stroke of a hammer upon purified. It is generally held that molten iron cannot lever, L, which works with a… … The patent for this invention was granted to Thomas ble, every machine-shop in our country may easily man- The engraving represents a perspective view of this in- R. Hopkins, of Petersburg, Va., August 23, 1859. ufacture its own steel. vention. The wheel, A, is so connected with the clock- IMPROVED…
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