Section 24.—CUTTING TOOLS.
Besides the ordinary cutting tools in use in the workshop, such as the chisel, gouge, plane, saw, drawknife, scissors, shears, scythe, and others, and which do not properly belong to machine devices, there are others, some of them mere modifications of the ordinary tools that are sometimes needed in the design of machines, and are illustrated here.
Other appliances are—Shears: see the ordinary shearing machines, bookbinder’s shears, [No. 462], and other modifications. In some the shears are hinged at one end, in others the movable blade moves either with equal or unequal motion at either end by cam or crank motion (see [462].)
[454]. Pipe cutter, with V-edged cutting roller. Sometimes 3 cutting rollers are used. See [No. 466].
[455]. Cutting discs, used for paper, sheet metal, &c.
[456]. Slitting discs, for cutting sheets into strips.
[457]. Revolving cutter head, for moulding, tenoning, and numerous wood working uses.
[458]. Hollow revolving cutter head, for rounding wood rods, broom handles, &c. See also [No. 488].
[459]. Reaping machine cutters. A series of scissor-shaped knives, one set fixed and the other reciprocating.
[460]. Wire cutter discs, one fixed, the other attached to the hand lever, and having corresponding holes of various sizes in both discs.
[461]. Chaff machine, with revolving shear blades.
[462]. Guillotine shears.
[463]. Milling cutters.
[464]. Tubular machine cutter for wood working; easily sharpened, and can be revolved to present fresh cutting edges to the work.
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[465]. Fret saw or jigger.
[466]. Three-cutter tube shears, with worm gear motion.