US314898A

US314898A - Sole-edge-trimming tool

Info

Publication number: US314898A
Authority: US
Publication date: 1885-03-31
Anticipated expiration: 1902-03-31

Description

(N0 MOdeL) G. W, WILSON.

SOLE EDGE TRIMMING TOOL.

No. 314,898; Patented Mar. 31, 1885.

Witnesses Inventor J m Um Attomgy I UNITED STATES PA ENT O FICE.

CHARLES 7. WILSON, OF LYNN, MASSACHUSETTS.

SOLE-EDGE-TR IMMING TOOL.

SPECIFICATION forming part of Letters Patent No. 314,898, dated Mai-ch 31, 1885.

Application filed September 20, 1884. (No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES W. WILsoN, of Lynn, in the county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Sole-Edge-Trimming Tools, of which the following, taken in connection with the accompanying drawings, is a specification.

This invention relates to tools for trimming boot and shoe sole edges, and has for its object to furnish a tool for this purpose that will possess great durability, out instead of scraping the leather, permit being easily and readily repaired, and perform the work of trimming and randing the sole at one operation.

The invention consists in the combination of devices hereinafter fully described, and s pecifically claimed.

In the accompanying drawings, Figure l is a side elevation of my improved cutter or trimming-tool. Fig. 2 is an edge view of the same. Fig. 3 is the reverse of Fig. 1. Fig. 4 is a side elevation of the cutter-head without the knives. Fig. 5 is an edge view of the same. Fig. 6 shows in perspective one of the cutters detached. Fig. 7 is a sectional view. It shows one cutter in position and aportion of the cutter-head and upper guard to fully illustrate the relative position of these parts. Fig. 8 is a perspective of one of the cutters detached.

The cutter-head is composed of a central hub, A, and a series of radial arms, a. (See Fig. 4.) Said arms are each provided with a vertical slot, 6, to receive the shank of the cutter, as in Fig. 7, and a clamping-screw, f, to hold the cutter in place. Said cutters are formed in one entire circle or wheel, and then out into small sections and clamped to the cutter-head, as stated. The radial arms aare backed off at the heel, so as to drop the heel of one cutter slightly below the cutting-edge or toe of the next, the object being to avoid the necessity of backing off the heel of the cutters. It is in this respect, partly, that my trimming-tool differs from those where the radial arms constitute the cutters. cases the cutters, being a part of the arms, must be backed off at the heel, and when this part of the tool comes to need repair the whole tool must be thrown away; but in my tool the In such wear comes upon the knife, leaving the end of the arm always the same, and when the cutter or knife gets worn it may be taken off and a new one put'on. In this way the tool may be wholly duplicated, if need be, on its working-edge, and the operation of backing off being first performed on the arms a is ever afterward avoided until anew central hub is needed. By this method of arranging the cutters I am enabled to adjust the position of the knives or cutters relatively to each other, so as to compensate for wear-that is, the cutter may be set farther outward on the arm to compensate for surface-wear, and it may be set forward to compensate for wear by grinding its cutting-edge. In this way new cutters may be put in and the old ones made to line with them, and thus insure the smooth working of the tool.

In the drawings, Fig. 8 shows a perspective view of one of the cutters. By reference thereto it will beobserved that the corner is ground off to a bevel. This is done to facilitate the operation of randing.

In Fig. 7, where the cutter is shown in position, it will be observed that this edge of the cutter bears against the plate 0, which plate C is a guard to prevent the upper of the shoe from being out, and the corner of the cutter, being cut away, forms a throat opening into the throat between the cutters and out through a hole in the guard G, as fully represented in Fig. 7. It is out through this opening or throat that the rand-chip passes, and thus the tool at this point is left free to cut and will not choke up. Constructed as described, the tool may be attached to the revolving shaft of any common trimming-machine and used in the usual and customary manner.

What I claim, and desire to secure by Letters Patent, is-

1. In a sole-edgetrimming tool, in combination, a series of independent cutters and a central hub provided with radial arms having each a vertical slot, said arms being backed off, as described, and the cutters having shanks adapted to the vertical slots, substantially as described.

2. In a sole-edge-trimming tool, the combination, with the upper guard 0, having discharge-openings, of the cutter-knife having its corner next the plate 0 beveled off, whereby screw f, all substantially as set forth. a throat is formed between the same to allow Signed at Lynn, Massachusetts, in presence escape for the rand-chip, substantially as deof two witnesses. 5 scribed.

CHARLES W. WILSON. 3. The combination of the central hub, A,

the radial arms a, having vertical slots e, the cutter-knives n, having shanks fitting between the walls of the vertical slots 6, and'the clamp- Witnesses:

PAUL E. CQLLINs, O. B. TUTTLE.