US38496A - Improvement in machinery for cutting soles of boots and shoes - Google Patents

Description

UNITED STATES PATENT OFFICE.

JAMES W. MALOY, OF CHARLESTOWN, MASSACHUSETTS.

IMPROVEMENT lN MACHINERY FOR CUTTING SOLES OF BOOTS AND SHOES.

Specification forming part of Letters Patent No. 38,496, dated May 12, 1863.

{'0 all whom it may concern:

Be it known that I, JAMES W. MALOY, of Charlestown, in the county of Middlesex and State of Massachusetts, have invented certain new and useful Improvements in Machines for Cutting Soles for Boots and Shoes; and I do hereby declare that the following, taken in connection with the drawings which accompany and form part of this specication, is a description of my invention sufficient to anable those skilled in the art to practice it.

This invention consists in the employment of a rocking frame having two gage-bars, which, in connection with the movements of a reciprocating bed carrying two sets of cutters, serve as rests or stop-bars for the edge of the leather; also, in the employment of a yielding plate and a clearer, as will be hereinafter set forth, and in the method of imparting a reciprocating motion to the knife-bed.

Figure 1 of the drawings represents a vertical cross-section of my machine, and Fig. 2 a top view of the cutter bed or plate.

A denotes the frame-work of the machine; B, the platen or follower, which works vertically in parallel ways C of the frame A, and has a reciprocating motion given to it by means of connecting-rods D, operated upon by crank-pins a, projecting from crank wheels or disks E, fixed on the opposite ends of a horizontal rotating shaft, F. This shaft F carries a bevel-pinion, G, which works a bevehwheel, I-I, fixed on a vertical rotary shaft, I. At the top of this shaft I is acrank, K, whose crankpin b works in a cam-slot, c, formed in the under side of a horizontal bed or frame, L, which carries the cutters or knives. This bed Lrests and slides upon parallel ways or guides M on the frame-work A, and has a reciprocating horizontal movement imparted to it by means of the crank-pin b and cam-slot c. This bed carries two knives or cutters, d d', fixed in a removable plate, N, and the reciprocating movement is given to the bed so that each knife in turn shall be brought under the platen B. As the platen descends, it cuts a sole upon one of the cutters, and as it next ascends the other cutter will be brought under it to be operated upon in its next descent.

O is a rocker-frame, consisting of two restbars, s s, connected at their opposite ends by two cross-bars, t t, which rock on pivots u u, fixed in bearings t n.

The leather to be operated upon is fed into the machine over a yielding' plate, P, which rests upon springs g g, and so that the plane of its upper surface is just above the plane of the knife-edges, or in such a mannerv that if the piece of leather is pushed in over the adjacent cutter d, (when the platen is not in contact therewith,) the plate P will keep the leather from resting upon or sliding against the edges of said knife.

The operation of the machine is as follows: We will suppose the knife d adjacent to the plate P to be under the platen or follower B, (said follower being at its highest position, as seen in Fig. 1,) and the leather to be fed into the machine with its forward edge resting against the stop-bar s of the rocker-frame O, as shown by the red line in Fig. l, which may denote theleather. Rotation being now given to the shaft F, the platen B will descend, and duringsuch descentthecutter-frameLremains stationary. As the platen comes in contact with the leather, one edge of it forces down the yielding plate P so as to permit the leather to be pressed against and cut by the knife d. The opposite edge of the platen at the same time strikes against the stop-bar s, against which the leather was pressed, and tips it down against the surface of the bed L. This, as will be readily understood, tips up the opposite stop-bar s', the vtwo bars s s being now in the position shown by the dotted lines in Fig. 1. During these operations the knife-\1 frame L has remained at rest, but as the platen rises (by the continuance of lthe rotary inotion of the shaft L) the cam-pin b, working in the cam c, will cause the knife-plate L to move over its ways M, so that at the end of said rise and preparatory to its next descent the other knife, d, will be brought directly under the platen and be held there during the next descent of the platen. Meantime the leather, after having the sole cut from it, as mentioned above, will be fed in by hand, when its progress will be stopped by the stop-bar s (which has been tilted up for this purpose) and held in position for the next operation of the knife d, and during this feeding in the leather will be kept from rubbing over the edges of the knife d by the position of the yielding bar P, which, after the pressure of the platen is removed, assumes its first position. As the platen next descends it presses the leather against the knife d', (causing another sole to be cut,) and in its descent it strikes against the stop bar s and tilts up the bar s to the position seen in the drawings, and so that the leather in being fixed for the next operation of the knife will have its edge held in position against the side of the bar s. The edges of the stop-bars against which the leather is held not only prevent the leather from being pushed through the machine, but are placed in such relative position to the adjacent sides of the knives or cutters as to prevent all waste of material. The rotary movements of the shaft L continuing the above operation, will be repeated.

I am aware that a yielding table or plate for supporting the leather is not new, as such is found in the patent of J. S. Shattuck, No. 24,141 5 `but the yielding plate of his machine is on both sides ofthe operating-knife, and has to be raised up in order to allow his knives, arranged in a segmental knife-bed, to come into position to operate, while in mymachine the plate is made yielding merely for the purpose of keeping the leather as it is fed over the adjacent knife from scraping over the edges thereof, and for this purpose is placed in close juxtaposition to one side of said knife, as seen in the drawings. The soles as they are cnt out of the leather fall through the knives and upon a shelf, n, of the frame A, in the under surface of which shelf the cam-siot c is formed. To clear them from the machine a clearer or rod, p, extends out from the frame A, and in such manner that at each backward movement of the frame or bed L the soles will be pushed off of the shelf n, falling therefrom into any proper receptacle.

I would remark that instead of giving to i i. whole operating together and upon the leather to be cut, as above described.

2. The yielding plate P, when used with a horizontal knifebed, L, and for the purpose of keeping the leather from contact with the edges of one knife, d, as it is fed into the machine over to the other knife, d.

3. The stationary clearer p, when operating in conjunction with the reciprocating horizontal movements of the knife-bed, as described.

4. Giving to the knife-bed its reciprocating and intermittent motions by means of the cam c, pin b, and crank K.

Executed this 10th day of March, A. D. 1863.

JAMES W. MALOY.

Witnesses:

J. B. Gaosnv, FRANcrs GoULD.

Images