USRE3987E - Leather - Google Patents

Description

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CHARLES E. DAVIS, THOMAS OOREY, SAMUEL BOYD, AND ROGER BOYD', OE MARLROROUGH, MASSACHUSETTS, ASSIeNEEs OE eADER s. STEARNS.y

Letters Patent No. 58,315, lated September 25, 1866; yrez'ssuecNo. 3,987, dated May 2li', 187

The Schedule referred to'in these Letters Patent and making part of the same.

To all whom it may concern:

Be it known that GADEB SrSTEARNs, of Marlborongh, in the county of Middlesex and State` of Massachusetts, did invent an Improved Machine for Gutting Leather', Ste., of which the following is a full, clear, and exact description, reference being had to the accompanying drawings making part' of this specifcation, in which- Figure 1 is a perspective view of his improved machine -for cutting leather. 4

Figure 2 is a side elevation of thesame.

Figure 3 is a section through the die and its shaft, on the line y y of g.2.' f

Machines have beenconsirncted for the purpose of cutting ont soles of boots and shoes, and other arti` cles, in which the diewas attached to the end of a vertical shaft, Working up and down instationary This necessitated the cutting of the leather into long strips, which were moved along under the die; but with this method -a considerable waste of leather was occasioned, as the die was always brought down vertically in the saineplace, and could not be moved so as to cnt in the exact spot required, and, on this account, the ordinary hand-die, which is struck with a mallet, is generally preferred.

This invention has for its object to overcome this objection, and consists ina movable or sliding` frame, in combination with a presser-block, or equivalent device, by which the cutting-die is made to out the leather, on any portion of the table, withoutnnnecessary waste, the leather being spread out upon the table, and not cut into strips, as heretofore.

To enable others vskilled in the art .to understand vand use this invention, the manner in which it is carried out cwill now be described.

A is the bed of the machine, from which rise lthe standards B C, the former of which supports the frame D.

E is a block, which is grooved on each side, and fitted to slide back and forth in the frame D, and to this block is secured a shaft, F, to which is attached, so that it will swing `freely in any direction, the frame G.

This frame is jointed in the center at a, and its outer end is bifnrcated, forming bearings l) for a vertical hollow shaft, H, which slides up and down, and is provided with a collar, c, between which and the lower bearing b it is surrounded by a spirai. spring, d, by which it is retained in the position seen in figs. 1A and 2, the collar c serving as a'stop.

4 I is a. collar, which is so attached to tlielower end of the hollow shaft H lthat it will swivel around freely thereon, and to this -coll'ar I issecnred, by means of a set-screw, e, the cutting-out die K, the spindle f of which passes up into the -hollow shaft H; and on top of this spindle f rests a rod, y, of'

such a diameter that it will slide freely 4within the hollow'shaft. The die can thus be revolved around freely in any direction, as required.

' The manner in which the die K is brought down onto the leather or other material which is placed upou the table L will now be described.

M is a presser-block, the surface of which nearly corresponds to that of the table L, and from the ends ot' this block project the guides h, which slide up and table, the area ofthe under surface of the presserblock beingnsuch that it will strike the rod g whenever the whole of the die is over the table L.

It will be seen that the pressure of the' rod g is exerted directly over the center of the die, thus avoiding all liability vof straining the swiveling collar I.

The length of the rod g may be varied to correspond to the length of the spindle of the die einployed, and thus insure theidie heilig brought down suiiiciently to cnt 'through the material on the table L.

When the presser-block M is raised, the spring cl draws up the die K, and retains it above the leather,

.so .that the operator, by taking hold of the swinging frame G, can move the Vdie at pleasure over any portion of the leather, and bring it down into the exact position required to cut without unnecessary waste.

Instead of `the swivcliug-die being attached to a swinging frame, it may be` secured to a frame so ar'- ranged as'to "slide in different directions to bring the die over any portion of the table required, without departing from the spirit of this invention, and, instead of hanging the die to a movable frame, it may, if preferred, be detached therefrom, the die being taken up in the hand and placed upon that portion of the leather' which it is desired to cut, and the movable frame then brought down upon it to force it through the leather.

In the machine above described the die K is'for cutting out the soles of boots and shoes, but dies of other forms, for cutting out various articles, may be used insteadf,

It will be seen that, with the above-described machine, the leather or other material cam be out as economica-ily a-slwith a hand-die, while the operation can be performed much more rapidly, thus efec-ting a. great saving of time, stock, :md labor.

Claims'. That we claim as the iivetion of the said OALEB S. STEARNgnnd .desire to secure by Letters Patent,

A movable or sliding frame, iu combination with a. presser-b1ook, M, or equivalent device, by which lthe cutting-die in a. leathereeuttng machine is made to out the leather, substantially as set forth.

Alsojthe hollow shaft H'with'its swiveiiug collar I, the die K7V and the rod g, in combination with vthe movable nrm G, substantially its and for the purpose described. Y

VVitnesS our hands this 2d dany of Maty, A. D. 1870.

CHARLES F. DAVIS. THOMAS OOREY.

. SAMUEL BOYD. ROGER BOYD.

Witnesses:

P, E. TEsoHEMAm-me N. W. STEARNS.

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