1 8 7 2. Gearing Shafting. $10 from 50 cts. JACK. VOSITORY No. 743 Broadway New York. OTIS EROS. & CO. All Lhrl Simple Durable and Economical SCIENTIFIC AMERICAN MENTS MACHINES TOOLS AND PROCESSES., 1872-04-06


1 8 7 2. Gearing Shafting. $10 from 50 cts. JACK. VOSITORY No. 743 Broadway New York. OTIS EROS. & CO. All Lhrl Simple Durable and Economical SCIENTIFIC AMERICAN MENTS MACHINES TOOLS AND PROCESSES., 1872-04-06


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