197

which are four standards for bearings

for two shafts. The pulley, clutch, and

small driving-gear require no

explanation. The wire is clamped

between two jaws H H, [Fig. 1], the

upper one of which is raised or

lowered by the handle and two gears

A A turning right and left screws. The

mandrel or forming-spindle X is of

tool steel finished to fit easily within

the sleeve A, which in turn is fitted

and keyed to turn with the slide, back

and forth within the main spindle V

by a key at D. A handle at Z fastened

to the forming-mandrel by the set-

screw W keeps the mandrel

stationary, by a round-headed pin entering

the back at Y, while the sleeve with the main spindle rotates and twists the wire. This

pin is located in the bracket T, with a spring at the back at S and a handle at R to allow

of its being forced back when the mandrel-lever is to be turned.

When the machine is in use the work is located and clamped between the two jaws H H,

with the pointed end lying in the

slots L and M of the sleeve K and

the spindle V respectively, and

the handle of the forming-

mandrel located and held by the

pin T, [Fig. 1]. The clutch-lever is

then pulled back and the spindle

V and the sleeve K rotate while

the forming-mandrel remains

stationary, thus twisting the wire

around the mandrel to the shape

shown in the half-tone. The

clutch-lever is then pulled out

and the machine is stopped

when Z is released and turned

toward the left, thus drawing out

the sleeve and mandrel, leaving

the finished corkscrew so that it

can be removed by loosening or raising the upper jaw H. The mandrel and sleeve are

then slid back in position, another piece of wire is located, and the operations are

repeated.

Figure 2

Figure 3