Section 28.—CHUCKS, GRIPS, AND HOLDERS.

Common devices for gripping articles comprise the ordinary vice, tongs, pincers, pliers, joiners’ handscrew, cramp bench screw, parallel vice, instantaneous grip vice, &c.

[488]. Hollow chuck, with radial knives, for rounding wood rods. See also [No. 458].

[489]. Barber’s patent grip for shanks of drills, brace bits, &c., having square taper shanks.

[490]. Collar grip and bolt, or set screw.

[491]. Cone and screw lever grip, with two or more jaws; with two jaws only it serves as a small vice.

[492]. Taper grip for vices.

[493]. Tool box, for lathes, planing machines, &c., with central revolving tool post and set screw.