THE ADVOCATE OF INDUSTRY, AND JOURNAL OF SCIENTIFIC, MECHANICAL AND OTHER IMPROVEMENTS. [NUMBER 39. NEW-YORK JUNE 10, 1854. VOLUME IX.] by spoiling the article being operated upon. PATENT CAST-IRON CAR WHEEL. It also relates to securing the cutter in the SCIENTIFIC AMERICAN, … it also consists in so arranging friction rollers tion of cast-iron railroad car wheels, having tmuous around the rim and the hub, and tend cific Island, have not yet reached their destina- that they will take off the friction from the bar their two sides united at the tread and hub to make the…
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