[503]. Lathe carrier, for round rods, spindles, &c.
[504]. Bench cramp; employed to hold down to the bench work operated upon; the bench has a series of holes bored in it to receive the vertical leg of the cramp.
[505]. Grip tongs, used for draw benches, &c., the bite of the jaws increasing with the strain on the chain.
[506]. Split cone expanding chuck for rods, &c.; the centre cone is split into three or four parts, and the screwed ring or collet contracts the split cone upon any cylindrical article inserted in the central aperture.
[507]. Le Count’s patent expanding mandril, with cone and three sliding feathers which are fitted into dovetail grooves in the conical mandril. The travel of the feathers being limited, they are provided with steps to take various sizes of holes.
[508]. Bell chuck and set screws for lathes.
[509]. Three jaw grip, or stay bearing, used as a steady for long shafts or spindles.
[510]. Pipe tongs, self gripping; there are several modifications in use.
[511]. Paper grip, used for holding sheets of paper; released by striking a stop A at any point in the travel of the machine.
