the “ bi- The object in the present invention is to force the air into ter, and b the strong riveted iron shell or vessel on the inside tricyle” to secure immunity from overturning by broadening the converters under pressure, and thereby to secure a greater of the mouth of which the iron hoop, ¢,… … der “high pressure,” as de- ly divided between the wheels scribed in our account of —and it is easy to conceive Mr. Bessemer’s new melting furnaces, which appeared on the ordinary way. The purer qualities of pig iron are ad- of circumstances, in which only two of the wheels, or pages 187 and 197…
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