US339990A - Half to alice l - Google Patents

Description

(No Model.) 2 Sheets-Sheei: 1. 9 J. A. JOSSELYN.

SCRAP LEATHER SPLITTING MACHINE.

Patented Apr. 13,, 1886.

- j) In cferz'z oz N. PEIERS. HMO-Lithographer. Wnllflngton. D. (L

(No Model.) 2 Sheets-Sheet 2. J. A. JOSSELYN.

SURA'P LEATHER SPLITTING MAGHINE. No. 339,990. Patented Apr. 13, 1886.

N PETERS, PIIaIbI-ilhngmphan Wlshington. D. C.

Nrren JOHN A. JOSSELYN, OF BROOKFIELD, MASSACHUSETTS, ASSIGNOR OF ONE- HALF TO ALICE L. TWICHELL, OF SAME PLACE.

SCRAP=LEATHER-SPLITTING MACHINE.

erzcrrzcairrom forming part of Letters Patent No. 339,990, dated April 13, 1886.

Application filed December 14, 1885.

T all whom, it may concern.-

Be it known that 1, JOHN A. JossELYN, of the town of Brookfield, county of \Vorcester, and Commonwealth of Massachusetts, have invented certain new and useful Improvements in Scrap-Leather-Splitting Machines; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being had to the accompanying drawings and letters of reference marked thereon, forming a part of this specification, and in which- Figure 1 represents a top or plan view of so much of a scrap-leathersplitting machine as is necessary to illustrate my present invention.

Fig. 2 represents a vertical section on line a a, Fig. 1, looking in the direction of arrow at. Fig. 3 represents a section on line b, Fig. 1,

looking in the direction of arrow a. Fig. 4 represents asection of certain portions on the irregular line 0, Fig. 1, looking in the direction of arrow 0, Fig. 1, as will be hereinafter more fully described. Fig. 5 representsaperspective view of the stationary leather-open ing guide and its supporting-arm. Fig. 6 represents an end view of the leather-opening guide, looking in the direction indicated by the arrow, Fig. 5. Figs. 7, 8, 9, 10, and 11 represent, upon a reduced scale, different views ot'a piece of scrap-leather as it appears before and after it has been split, as will be hereinafter more fully described.

To enable those skilled in the art to which my invention belongs to make and use the same, I will proceedto describe it more in detail; butas my present invention consists in improvements in the scrap-leather splitting machine patented by Geo. L. Tyler, March 5, 1881. No. 242,079, February 7, 1882, No. 253,449, and June 2, 1885, No. 319,357, it will only be necessary to show and describe such portions of the machine as are immediately connected with or relate to my said improvements, the general construction and operation of the said Tyler machine being well known,

as shown and described in said Tyler patents,

to which reference is hereby made.

In the drawings, A represents the bed upon which the splitting-knife 13 rests, and which knife has its rear corners, B, cutout, as fully indicated in Fig. 1 of the drawings. This knife is held in place by adjusting-bolts B". In this instance two are used in the back and one at the outer end. Two of these bolts B Serial X0. 185,554. (No model.)

pass through the long arm C of the knifesupport C, while the other bolt screws against the outer notched end,B,of the splitting-knife, thereby keeping it close up against the inner edge of the leather-openingguide.

The knife-support C is screwed or fastened by screws A to the top of the knife-bed A. To keep the knife firmly against the bed A, with its back resting against the adjustingbolts, an upright screw, D, passes down through a suitable block attached to the frame of the machine, having a hole and screw- 6-; thread cut therein to fit the screw-thread on the screw spindle D, which latter is provided with a hand-wheel, D, by which it can be screwed up or down to fasten or release the splitting-knife B, which knife, when desired, can be turned over, thereby reversing its notched ends B, for the purpose of utilizing the cutting-edge of each end, the scraps of leather to be split being generally less than half the length of the knife. nut may also beemployed on screw-spindle D for holding it more securely in position. If preferred, the long arm C may extend up to and against the inner edge of the flaring part J of guide I.

E represents a piece of leather as it appears when fed into the machine to be split, and in this instance two sets of feed-rolls are employed forward of the knife, one set being marked F F and the next set G G, and the 8 surfaces of these feed-rolls are provided with longitudinal grooves or flutes d, and all of said flutes are slightly out of line with the axes of said rolls, so that the ends (I of the flutes d next to the seam-guide H will be a little back of the center of the rolls when the opposite ends of said flutes have passed the center of said rolls, and by which construction the edge of the strip or piece of leather being split will always be pressed against the seam-guide H as it is fed through to the knife, thereby insuring not only its seam edge H being trimmed even and true by the edgingknife H but the split in the leather always at a certain distance from the evened edge H, whereby a perfect seam is secured when the piece of leather has been split and flattened out for further use, as will be hereinafter more fully explained.

Asthemachineiscommonlyeonstructedthe {o5 feed-r0ll F turns in fixed bearings, while the A set or lock 7 I bearings, to enable it to yield to compensate u are fed forward over the inclined sides of said the feedrolls G G, the nearly-separated sides feed-roll F,which has abearing only at its end farthest from the seam-guide H, is fitted to swing up to allow of pieces of leather of different thicknesses to pass through said rolls, while the bearings of feed-rolls G G are supported in swing or-"sheafl bearings, which bearings are pressed or drawn together by equal s i|-iiig-pi-esstii-e, and when they open each roll is the same distance from the edge of knife B; consequently the pieces of leather will always be properly centered when they strike the cutting-edge of the splitting-knife B, and knife-edge e is set so as to stand just back of a vertical line passing through the centers of the feed-rolls G G.

As the cutting-edge e of knife B is beveled off equally on both sides, the split portions of the leather are gradually opened as they pass over the knife, so that when they reach the endf of the stationary leather-opening guide I, which is the same or about the same width of the back f of the notched end B of knife B, they readily pass on each side thereof and are caught by the set of burr feed-rolls J J,and

guide, one on each side of the guide, until reaching the wide and flaring end J of said guide,where they are caught by vertical fluted feed-rolls K K, and in passing between said rolls are tiat tened out, forming a piece ofleather twice as broad as it was when passing through of said strip of leather being held together by a narrow uncut portion. g, as indicated in dotted lines, Fig. 8, and full lines, Figs. 9 and 11.

It will be seen that splitting-knife B is supported and held in such manner that the end over which the split scrap-pieces of leather pass is smooth, and consequently the paths of the split sides or wings 11) E are unobstructed by nuts or bolt-heads.

In practice feed-roll K is fitted in yielding for the unevenness of the strips of leather operated upon, while feed-roll K turns infixed bearings. Such bearings and the bearings of the feed-rolls F F and G G form no part of my invention,'and, being well known in said Tyler machine, are not shown in the drawings. I

Thebearings of feed-rolls G G are so adjusted that when in their normal positions,before the pieces of leather are fed in, the surfaces will stand close to the cutting-edge of the knife, and the bearings J" J of the burr feed-rolls J J are also arranged so that when they rest upon the beveled edges h h in the notches h It in the edges of the seam-guide H the surfaces of said rolls will be nearly in contact with the beveled surfaces of the leather-opening guide I, as indicated in Fig. 4 of the drawings. Supportingarm 1 fits into a slot in the bed A, and it is furthermore secured byscrew I, passing through hole 1 into bed A, the screwhead being flush with top of arm 1.

As the pieces of leather when they are split are wet and in quite a pliable condition, they are. liable, more particularly short pieces, to

clog or bunch up in passing over the wide or flaring end J, thereby often rendering it necessary to stop and take the machine to pieces, in order to free all the rolls from the accumulation of clogging pieces of leatherfed into the machine before the trouble was discovered. To obviate this I make the end H of the seam-guide H in curved or bentform, as fully indicated in Fig. 1 of the drawings, and by reference to which it will be noticed that said end H of the seam guide H is bent out from the stationary leather-opening guide I and toward the upright flattening-rollK, and

by which construction the wings or sides-of leather are allowed toslip oil, or a little away from guide I, after passing the burr feed-rolls J J. whereby the friction on the flaring side of guide I is lessened, and the leather moves along until, coming in contact with the fluted surfaces of the upright rolls K K, it is caught and carried through between them and flattened out to form a piece of, leather, such as is shown in Figs. 10 and 11, the latter represen'ting a cross-section on line d 'd,-Fig. 10, looking in the direction of arrow d.

Fig. 8 represents the form of the strip of leather shown in Fig. 7 after it has been fed through thesplitting-machine and then folded up. The uncut portion 9. which forms the seam or union between the wings E E, is rep resented by dotted lines, Fig. 8.

In Fig. 9 the wings E E are shown opened or spread partially out to show the folding edge H in its doubled position, and in order to have these split pieces work up well and give satisfaction alike to manufact-u rer, wearer,

even and true by the edging-knife H, whichisvarranged to stand in an inclined position against the beveled end of the seam-guide H, as fully indicated in Figs. 1 and 2 of thedrawings, the lower end of said knife being shown broken off in Fig. 2. It is held in place by a set-screw passing through its slotted support in the usual manner. The strip I must also be split'even and with a narrow and uniform uncut portion, 9, since if the edge H is not even and true it will not double back uniformly, which is essential to make good work, andif the narrow part g is not of uniform width the same unfavorable result is produced, while if the part g is cut entirely through a portion of the way the strip is rendered comparatively worthless, as the wing.

partsE Eseparate when used in making boot and shoe heels, slip-soles, and inner soles, for which they are especially adapted when prop= erly split, as can be done by my said inven-' tion, since as a result of the angular flutes d on the feedrolls F F and G G the strips Eof leather are constantly pressed up against the seam-guide H, thereby 'in'suring, as before stated, the proper trimming off of the uneven part at to leave the true edge H, and which even surface H being pressed by the eudwiae to: a and dealers, the edge H must be trimmed ofl:

cassao 3 action of flutes d up against the inner side of the seam-guide H, the strip of leather is fed to the edge e of knife B in such a manner that the cut is made the entire length ata uniform distance from the trimmed edge H, such distance being determined by the distance the,

end of knife B is set from the side of seamgnide H, and the distance can be very nicely adjusted by means of the adjusting-bolts B and upright bolt D, and after being once adjusted the knife can be taken out, sharpened, and replaced very quickly, and that, too,without further end adjustment, thus enabling an operator to do a large amount of work and of the best quality. Those skilled in the art to which my invention belongs will readily appreciate the practical value of this part of my invention, by which the strip of leather can be split, leaving only a narrow and uniform uncut part, g, the entire length of the back to form the seam, and which result can only be obtained by such a construction of the machine as to keep the strip up close to the seamguide H, however uneven or bunehy it may be, since if the leather twists laterally as it is fed to the knife the corner of the latter will cut through the back and greatly injure the work, if it does not spoil it.

Feed rolls have heretofore been made slightly conical, with a view of accomplishing a like effect; but such construction tailed to produce the results sought, especially when bunches were found on the flesh side of the leather scraps.

In Fig.4the burr feed roils and their bearings are shown in full lines, (not in section,) while the seam-guide H is shown in cross-section, and from which illustration that part of my invention relating to this particular part of the tnachine will be readily understood.

The spindles M, to which the burr feed-rolls J J are fastened, turn in square pipe or hollow bearings J J which in. turn rest in the square notches h it, one in the upper and one in the lower edge of the seanrguide H, and

the bottoms of both of these notches are beveled off, as seen at n n, to leave sharp edges h h, so that the bearings J J when in their normal positions, as shown in Fig. 4, rest or are pressed against the sharp edges h it.

As before stated, in the use of the machine there is liability of shreds of the leather working in between the bottoms of the bearings of the rolls J J and the bottoms of the notches in the seam-guide H, and to such an extent as to seriously impair the working of the machine, requiring oftentimes the stopping of said machine and the removal of the rolls J J and their bearings in order to reach and remove the obstructions, and this difficulty led to the invention and construction of the combination just described, whereby every time the bearings of said rolls are allowed to spring back to their normal positions they cttt up or separate any foreign matter lodged on the sharp edges h h, which is then worked off by the action of the machine; but in case, by the constant use of the machine, the bearings do not Spring together often or hard enough, the attendant stops the machine and pulls the burr feed-rolls apart, and then allows them to spring back, and which operation, repeated a few times, suffices to cut and separate the lodged material, which is then Worked off by the ordinary action of the machine.

From the foregoing description it will be seen that my improvements in machines for splitting and opening pieces of leather to be afterward cut up and used in making boot and shoe heels, slip and inner soles, are well adapted to give it additional merit and usefulness in utilizing the waste pieces of leather, thereby greatly contributing to the lessening of thecost of boots and shoes, especially those worn by the laboring classes.

It will be understood that the respective sets of feed-rolls are properly geared together, and therefore have positive motions when the machine is in operation.

As before stated, my present invention is an improvement upon the Tyler tnachine, and I therefore hereby disclaim all that is shown, described, and claimed in said Tyler patents of March 5, 1881, No. 242.079, February 7, 1882, No. 253,449, and June 2, 1885, N0. 319.357.

Having described my improvements in scrapleathensplitting machines, what I claim therein as new and of my invention, and desire to secure by Letters Patent, is

l. The (:OI'llbiliittiOi], with the splitting-knife B, feed-rolls F F, stationary leather-opening guide I, and flattening-rolls K K, of the seam and edge guide H, having its rear end curved out from the stationary leather-opening guide 1 toward the outer flattening-roll, substantially as and for the purposes set forth.

2. The combination, with the bearings J J of the burr feedrolls JJ, of thedouble notched and beveled seam-guide H, substantially as and for the purposes set forth.

3. The combination, with the bed-plate A and splittingknife B, of the back and end knife-support, 0, provided with knife-adjusting bolts and upright holding bolt or screw D, substantially as and for the purposes set forth.

4. The combinatiomwith the seam-guide H and leather splitting knife B, of the feedr0lls G G, provided with angular flutes d", made substantially as described, so that as the feedrolls revolve to feed the scraps of leather through to the splittiugknife the ends of the flutes next to said seam-guide H will be a little back of the centers of said rolls-G G when their opposite ends have passed the centers thereof. substantially as and for the purposes set forth.

JOHN A. JOSSELYN.

\Vitnesscs:

Tnos. H. DODGE, HENRY L. MILLER.

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