Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . BaUtwin^s Direct-Artins Mining-tficomotive. MINING-MACHINE. 1449 MINING-PUMP. anthracite or bituminous ooal or coke. It will passcurves of twenty-live tVet radius, and haul on a leveltrack in good eouditiou three hundred and forty tonsof cars and load. Mming-ma-clime. An apparatus providedwith picks or cutters to cut giooves in rock or coal, af-ter which the mat
Knight's American mechanical dictionary : a description of tools, instruments, machines, processes and engineering, history of inventions, general technological vocabulary ; and digest of mechanical appliances in science and the arts . BaUtwin^s Direct-Artins Mining-tficomotive. MINING-MACHINE. 1449 MINING-PUMP. anthracite or bituminous ooal or coke. It will passcurves of twenty-live tVet radius, and haul on a leveltrack in good eouditiou three hundred and forty tonsof cars and load. Mming-ma-clime. An apparatus providedwith picks or cutters to cut giooves in rock or coal, af-ter which the material is to be pried out or detachedby wedges, as in coal-mining and working ijuarries. In Fig. 3173, the engine moves on a track parallelwith the breast of coal or stone, and a forward ad-justment ismade after eachtraversing chisels areworked alter-nately by theirrespective en-gines, theirstocks being connected to a \valking-beam, and have weighted pis-tons sleeved upon them. The steam is changed asthe piston passes a certain point, and is the meansof working the valve. The walking-beam actuates Fig. 3173. Fig.
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