. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . make up the length of the spoke, each headhaviiiAhiTM cutters of :5-in. face lappimx over each other so as to form a continuous cuttingede over the entire length of the cylinder. Tiiere is a table in two parts, gibbed and sliilmgoiahe frame in an-iilar ways, being moved to and from the cutters tn-eitlier a hand or a footlever. The upper part of this table supports the turning centers, and is pivoted to the lowerhalf
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . make up the length of the spoke, each headhaviiiAhiTM cutters of :5-in. face lappimx over each other so as to form a continuous cuttingede over the entire length of the cylinder. Tiiere is a table in two parts, gibbed and sliilmgoiahe frame in an-iilar ways, being moved to and from the cutters tn-eitlier a hand or a footlever. The upper part of this table supports the turning centers, and is pivoted to the lowerhalf near the tail center by a steel pivot, in one of .several lioles in the table, on which itvibrates for oval turning. At the opposite end of the head-center spindle is a cast-iron camof the shape that it is desirerl to turn, this cam riding against an uprigiit shoe extending upfrom the lower taljle, and held snug against the shoe by a coiled spring. ^^ hen the table is LATHES, WOOD-WORKING. 471 moved toward the cylinder to where the turning is begun, an automatic feed slowly rotatesthe object to be shaped, and the cam rotating against the shoe oscillates the table in a path. Fig. 3.—Spoke and handle lathe. corresponding with the shape of the cam. When the pivot is placed directly opposite thetail center the machine will turn the woi-k round at the tail end, gradually changing in sec-tion toward the other end, where it will correspond with the shape of the cam. For long,oval, or irregular turning, where both ends must correspond in section with the cam, thevibrating part of the table is locked fast with the lower part, and the cam rotates against a shoe fastened to the frame, thusvibrating both tables alike ateach end. The diameter of turn-ing is regulated by screws. Thetail-center can be adjusted atany desired distance from thespur center for short or longturning, or at right angles forstraight or taper turning. Theswinging cutter-head is made toadvance and retreat from thewo
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
