Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics (1892)
Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 142
r its entire face. The cutter-bar is revolvedby an endless curved-link steel chain from the driving-shaft, and simultaneously advanced bythe above mechanism into the coal or other material, to be undercut to the desired depth.The feed is thrown on and off l)y means of a lever. The cut under the… … FiQ- 4.—JelTiey coal-iiiiiiing inacbine.
Mechanical engineering
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