. Appleton's dictionary of machines, mechanics, engine-work, and engineering. handle E is allowed to recede and ren-ders the motion in both directions regular and smooth. As the bolt K descends it is brought into con-tact with the pins gg, which are made fast to the jaws and forces them open. In using this machine, when the handle E has been moved back, and the sliding-bolt and arbor havedescended, a blank, which has been notched, is fed in through the countersunk opening in the plate J,so as to enter between the jaws. The handle E is then drawn forward, which closes said jaws andbrings the he
. Appleton's dictionary of machines, mechanics, engine-work, and engineering. handle E is allowed to recede and ren-ders the motion in both directions regular and smooth. As the bolt K descends it is brought into con-tact with the pins gg, which are made fast to the jaws and forces them open. In using this machine, when the handle E has been moved back, and the sliding-bolt and arbor havedescended, a blank, which has been notched, is fed in through the countersunk opening in the plate J,so as to enter between the jaws. The handle E is then drawn forward, which closes said jaws andbrings the head up against the cutting edge of the tool G, by which the removal of the bar is instan-taneously effected, the edge of the tool projecting a little within the countersink. In removing thehandle back the blank is liberated and falls out, and another is fed in. SCREW-CUTTING MACHINE. This is an invention of Peter H. Watson, Esq., of Rockford,Illinois, for cutting serews. Fig. 3250 is a perspective view of the machine, as arranged for cutting a male screw upon a rod Fig. 3251 is a view of the face of the bevelled cog-wheel, carrying the dies, cutter and rest, <fec. Fig. is a vertical transverse section of the carriage and jaws for holding the material to beoperated on. Fig. 3253 is a plan of the cutter. Fig. 3254 is a plan of the tap in the act of cutting the thread in a nut. The nature of this improvement consists in combining and arranging in a suitable frame certainknown mechanical principles in such a way as to form a new and useful machine, which will enable themechanic to make screws and nuts with greater dispatch and correctness than by the modes nowin use. 3252. 3254.
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Keywords: ., bookcentury1800, booksubjectmechanicalengineering, bookyear1861
