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 734
aterial to be bored ; and the feed movement may be in-stantly reversed at pleasure. Vhannelimj-machine Bits.—All percussive channelingmachines cariy a gang of cutters bolted together, and inevery case the bits or points are chisel-shaped, some of themhaving straight edses and others diagonal ones.… … Fig. 13.—Diamond gadding machine. 706 QUARRYING MACHINERY. by replacing only one bar in the gang. A 3-(lrill gang is used with the bar channeler, andsometimes with the track channelers in sandstone, or very soft material. The 5-drill gangis used with track channelers. The bits of the gang for…
Mechanical engineering
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