ng. The plates are oil, and subjected to a heat sufficient to oxidize the iron, say then sheared, and the rough edges taken off. The iron of longitudinal eye tapered toward the ends, as is also the end 420°, for a light yellowish color, and higher for darker tints. of the forward prong. The trace… … such a degree as to the cause them to stick so fast together cross strands to form steps. At every eight feet is placed a LINDSAY'S TRACE FASTENER. as to prevent their separation when cold. rigid step, consisting of a steel bar, in order to keep the They next pass singly through cold rolls, three,…
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