and the thread-cut-ting dies are in engagement with its outer surface, thecylinder is driven by the gear, iV, and the elongatedpinion whose shaft is seen at H. By its engagementwith the feed-block, J, the cylinder is compelled to re-cede, thereby shifting the die-carrier and causing thedies to move… … THE JEBAULD FOBTABLE THBEADING-HACHINE. connections. The jaws, K, are self-centering de-vices, since they hold the pipes rigidly in a proper,centered position. A PIPE line, 143 miles long, has been built to carryCaspian petroleum to the Black Sea. The railroad wasinadequate to handle the oil, and…
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