. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . engages with a large gear on each sj>in-dle. By this means the four rods carrying f lie two cutter .>ieclionsare revolved from each end, thus avoiding the torsional strain whichwould result if driven from one end only. 1lie pair of rods foreach section, after piissing through one of the spindles, terminatesin semi-eylindrical l)locks. From each of these l)locks a stud ex-tends, on which is journaled a roll, en
. Modern mechanism, exhibiting the latest progress in machines, motors, and the transmission of power, being a supplementary volume to Appletons' cyclopaedia of applied mechanics . engages with a large gear on each sj>in-dle. By this means the four rods carrying f lie two cutter .>ieclionsare revolved from each end, thus avoiding the torsional strain whichwould result if driven from one end only. 1lie pair of rods foreach section, after piissing through one of the spindles, terminatesin semi-eylindrical l)locks. From each of these l)locks a stud ex-tends, on which is journaled a roll, engaging witli a cam attachedrigidly to the head. This cam is shown in Fig. 10, tlie workingportions lieing made in the form of a .screw-lliread. wliich, if ex-tendr-d all the way around, would have a lead e(iual to the thicknessor pitch of tlie culter. ,\s each seel ion of the eiitters eni:;ii;-es withthe wheel hut three fourths of a revolution, the t hread port ion of thecam which carries the cutters forward extends only three fourtiis ofits circumference, leaving the oilier one fourth for the reverse curvescutters back to their startmg-point. Provision is made for adjustii. Fig. 10.—Cam. of the cam to bring the one section of the cut- GLASS-MAKING. 597
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Keywords: ., bookcentury1800, bookdecade189, booksubjectmechanicalengineering
