288

Class 6 . — MANUFACTURING MACHINES AND TOOLS.

North Areas A. B. 10 to 31 ; C. D. E. 1 to 10, & 19 to 33 ; G. H. 25, 26.

[Uniter

geared headstocks, with conical steel mandril and hear-ings. Slide-rest, with quick hand traverse, two com-pound top rests, one on each side of the lathe centres,with independent adjustments, two extra slides, withright and left screw for working the top rests simulta-neously. Guide screw, disengaging nut, and 23 changewheels for screw cutting; two-face plates, Clement’sdriver, drill, and bell chucks.

[The duplex principle consists in the employment of acutting tool at the back of the lathe opposite to the toolin front, and in inverted positions to each other. Thetransverse forces are thus balanced, the work producedis more correct, and is accomplished in less time thanby the ordinary lathe.]

Patent self-acting compound duplex lathe, with fourcutting tools, for sliding, screwing, and surfacing.

[The arrangement of this lathe is similar to the fore-going, except that this has a duplicate independent seriesof self-acting motions and tools, which may either be

worked separately or simultaneously. The bed is ofgreat length, in one casting, and may be used for twodistinct lathes, by employing an extra set of headstocks.The lathe, though suited for general work, is intendedmore particularly for sliding long shafting, and for cuttingscrews. In sliding a shaft, the two series of tools com-mence in the middle of its length, and proceed in a direc-tion right and left. There is, consequently, a balance offorce longitudinally, as well as transversely.]

Patent self-acting duplex railway-wheel turning-lathe,fig. 3, including two sets of double-geared headstocks andface plates, driven independently, to prevent tortion of theaxle; four compound slide rests, with separate self-actingmotions to each, and swivel plates.

[Four cutting tools are employed, two acting uponopposite sides of each wheel. Both wheels are turned atonce upon their axle, and the slide rests are readilyremoveable in order to get the wheels into and out of thelathe.]

Fig. 3.

it'I II nilIIII

Whitworth’s Patent Self-acting Duplex Railway Wheel Turning Lathe.

Patent self-acting planing machine, with reversing tool,to plane both ways; grooved table, with screw traverse,by which the driving is removed from the middle to theend of the bed. Self-acting motions, for horizontal, ver-tical, and angular planing.

Self-acting planing machine, to plane one way, withquick return motion. (Fig. 4.)

The arrangement of this is similar to the foregoing,except that this has a quick return motion applied to thescrew, and has a fixed tool instead of a reversing tool.The tool-holder is fitted with a segment wheel and worm,for shaping internal curves, and has a self-relievingmotion. It is self-acting in all cuts.

Patent self-acting crank planing machine, uniform incutting, with a quick return motion. The tool-holder isfitted with segment wheel and worm, and has a self-relieving motion as in the last machine. The generalarrangement of parts, such as the bed, table, uprights,and cross-slide, is the same. The motion from the crankis imparted to the table by means of a grooved lever, inwhich the crank pin slides, a connecting rod beingattached to the top end of this lever and to the table.The connecting rod consequently vibrates through a verysmall arc, and enables the ordinary V slides to be used inthe bed and table.

Patent self-acting universal shaping and planing ma-chine, fig. 5, with adjustable crank, acting uniformly incutting, with a quick return motion; with bed grooved on

the front side, two tables for fixing the work, moveablevertically and longitudinally; horizontal slide movinfcthe full length of bed, for planing flat work; transverse

Whitworth’s Self-acting Planing Machine.