. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ned rock drill,quarry bar, and chan-neling machine, andwill do both drillingand channeling. As achanneler it does notcut by putting in holesand broaching the par-titions between them,but makes a continuouschannel, moving in thedirection of the cutwhile striking, this movement being automatic; but instead of movingbars. The chisels or cutters are of the regular f>attern with the diagonal bit, and the speed of the
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . ned rock drill,quarry bar, and chan-neling machine, andwill do both drillingand channeling. As achanneler it does notcut by putting in holesand broaching the par-titions between them,but makes a continuouschannel, moving in thedirection of the cutwhile striking, this movement being automatic; but instead of movingbars. The chisels or cutters are of the regular f>attern with the diagonal bit, and the speed of the machine is equalto the piston speed ofa regular rock drill ofthe same size whenused to put in a hole;hence its great cut-ting capacity. Thecutters are directlyunder the center ofthe piston-rod, and areseparated fi-om thepiston by a dowelshank of less diameterthan the piston-rod,which prevents break-age of the piston-rod. The machine putsin a round hole at eachend of the bar, thusforming the limits ofthe channel to be this is done, by avery simple and quickchange, the channelingbits are attached and are reciprocated automatically between these holes. The importance. bar channeler. Vertical. on a track it moves iipon parallel
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
