Fig. 3075.
A plan view of the machine is shown in [Fig. 3074], and a view showing the shape of the dies is given in [Fig. 3075].
Fig. 3076.
The surface h forms the frog. To give the required concavity to the toe and sides of the shoe, the surface i is made convex, and tapered or inclined towards h. The tread e is deepest at the heel on both sides, and highest at the toe. It is obvious that by suitably shaping the surfaces h, i, and e, any required form may be given to the shoe. [Fig. 3076] represents a shoe creased, punched, and bent ready to be passed to the machine.
Fig. 3077.
[Fig. 3077] represents a circular saw for cutting off hot iron; a is the frame of the machine, the arm b pivoted at c carrying the saw d; f is a spring bolted to the frame and serving to hold the saw in the position shown. The work e is gripped by the lever l, which is pushed over by hand. The lever l is adjusted to suit different sizes of work by the screw g, which raises or lowers the piece h, to which l is pivoted. The saw is brought into contact with the work, and fed to it by applying the foot to the lever or arm b at i, the screw j being made to contact with the foot of the machine by the time the saw has passed through the work, thus preventing the saw from moving too far forward after passing through the work.