US252281A - Machine for cutting shank-stiffeners for boots and shoes - Google Patents

Description

I ('No Model.)

C. B. WEBB.

MAGHINHPOR CUTTING SHANK STIFFENERS FOR BOOTS AND SHOES. N0.'Z5 2,281. Patented Jan. 10,1882.

ings for a shaft,

UNITED STATES PATENT OFFICE.

CHARLES E. WEBB, OF PHILADELPHIA, PENNSYLVANIA.

MACHINE FOR CUTTING SHANK-STIFFENERS FOR BOOTS AND SHOES.

SPECIFICATION forming part of Letters Patent No. 252,281, dated January 10, 1882. Application filed November 28, 1881. (No model.)

To all whom it may concern:

Be it known that I, CHARLES E. WEBB, a citizen of the United States, residing in Philadelphia, Pennsylvania, have invented a Machine for Cutting Shank-Stiifcners for Boots and Shoes, of which the following is aspecification.

The object of my invention is to rapidly and accurately cut from pieces of leather beveled strips available for use as shank-stifieners for boots and shoes; and this object I attain in the manner which I will now proceed to describe, reference. being had to the accompanying drawings, in which- Figure 1 is a front view of a machine for carrying out my invention; Fig. 2, a section on the line 1 2; Fig. 3, a perspective view of the cutting-knife, and Fig. 4 a diagram illustrating the operation of the machine.

A is the frame of the machine, having bear- B, which carries a fluted or serrated feed-roll, D, and is furnished with two spur-wheels, a and b, the former gearing into a pinion, 07, on the short driving-shaft E, and the spur-wheel b gearing into a pinion, e, on a shaft, F, which is adapted to bearings in a sliding frame, G, and carries a feed-roll, J, also serrated. The frame G is acted upon by a spring, f,which tends to force the said frame upward, but permits it to yield to accommodate difi'erent thicknesses of leather introduced between the rolls D and J, the frame being guided in its movements by rods 11, adapted to openings in a projection, m, of the frame A, and provided with nuts 12, which by contact with said projection limit the upward movement of the frame G and its roll J.

M is the cutting-knife, the front or cutting edge of which is beveled on the under side, the continuity of the beveled edgew being interrupted by the formation at the center of the knife ofa gouge, y, beveled in theopposite direction from the edge w. When the upper edge of the knife is directly in line with the lower edge of the feed-roll D and a piece of leather is forced against the knife by the feedrolls, the gouge y will out from the upper surface of said piece of leather a strip of a shape corresponding with thatof said gouge, the portions of the piece of leather on each side of the gouge being deflected downward by the beveled edge a: of the knife, as shown in the diagram, Fig. .4.

It isimportant that the upper edge of the knife M should be in line with the lower edge of the upper feed-roll; otherwise there will be on each side of the out strip a fin of leather, which must be afterward removed. I therefore attach the knife M to a frame, N, which is secured to a bar, P, at the back of the machine, so as to be capable of vertical adjustment in respect to said bar. The knife itself is adjustable from and toward the rolls, the bolts whereby the knife is secured to the frame N being adapted to longitudinal slots in said knife.

By the above-described machine I am enabled to cut with great rapidity from waste pieces or scraps of leather strips suitable for the shank-stiiieners of boots and shoes, said strips being much more accurate than those out by hand in the usual way.

Any desired shape may be imparted to the gouge y, and, if desired, said gouge may form partof a and removable from or adjustable in respect to the same. The making of the knife in one piece is, however, .preferret I claim as my invention- 1. The within-described knife for cutting shank-stiffeners, said knife having a beveled front edge, 00, the continuity of which is interrupted by the gouge y, beveled in the opposite direction, as set forth.

2. A knife for cutting shank-stiifen ers, said knife having a cutting-edge, part of which is beveled on one side a d the remaining part made in the shape of a gouge and beveled on the opposite side,'the whole being madein one piece, as set forth.

3. The combination of the knife M, having the beveled edge as, and gouge 3 with the feedrolls D and J, as set forth.

4. The combination of the feed-rolls D and J, the knife M, having a beveled edge, w, and gouge y, and the knife-carrier N, vertically adjustable on the frame of the machine, as set forth.

In testimony whereofl have signed my name to this specification in the presence of two subscribing witnesses.

CHAS. B. WVEBB Witnesses GEo. A. SMITH, HARRY SMITH.

strip separate from the rest of the knife

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