US353235A

US353235A - Leather-splitting machine

Info

Publication number: US353235A
Authority: US
Publication date: 1886-11-23
Anticipated expiration: 1903-11-23

Description

(No Model.)

A. F. STOWE.

LEATHER SPLITTING MACHINE.

Patented Nov. 23, 1886.

[NT/ENTUFF MTNEESEE 4 N PEYERS. Pholo-Lunngnnher. Washingion. n.c.

UNITED STATES PATENT OFFICE.

AARON F. STOWVE, OF WORCESTER, MASSACHUSETTS.

LEATHER-SPLITTING MACHINE.

SPECIFICATION forming, part of Letters Patent No. 353,235, dated November 23, 1886.

Application filed August 25, 1886. Serial No. 211,794. (No model.)

To all whom it may concern.-

Be it known that I, AARON F. Srown, a citizen of the United States, residing at \Vorcester, in' the county of WVorcester and State of Massachusetts, have invented certain new and useful Improvements in Leather-Splitting Machines, of which the following, together with the accompanying drawings, is a specification sufficiently full, clear, and exact to enable persons skilled in the artto which this invention appertains to make and use the same.

The object of my present invention is to pro- Vide, in a leathersplittingmachine, means for trimming off or removing from the surface of the fluted feed-roll any adhering stock or sub stance that would be liable to pass around with the roll and interfere with the proper action of the machine; also, to providea clearing-blade to work in conjunction with the surface of the presser or feed roll for trimming off adhering stock, and supporting devices therefor that will confine and maintain saidblade in proper relation to the roll-surface at all times, regardless of the springing action or movement of the roll to and from the gage-roll and split tingknife to accommodate different thicknesses and irregularities of stock ;,.also, to pro vide, in combination with the feed-roll of a splitting-machine, a clearing blade or trimmer with blade-supporting devic s having facilities for the adjustment of said blade to or from the roll-surface; also, to provide, in connection with the feed-roll in a sp1itting-machine,a cutter or clearing mechanism having facilities for the adjustment of the blade-supporting brackets, or to vary the angularity of the clearingblade in relation to the plane of thesplittingknife or rolls.

Another object of my invention is to provide means for the more accurate and desirable support and guidance of the presserroll journal-boxes in the supporting-frame.

These objects I attain by mechanism the nature and operation of which is illustrated in the drawings and explained in the following description, the subject-matter claimed being hereinafter definitely specified.

In the drawings, Figure 1 is a vertical sectional view of a leather-splitting machine illustrating my invention. Fig. 2 is a sectional rear view showing one end of the rolls, clearing-blade, journal .-'boX, and blade-adjusting manner, or substantially as heretofore employedv by me.

.0 indicates the splitting-knife, and D the fluted presser or yielding feed-roll. The roll D is supported in movable journal-boxes E, that work up and down inguideways on the main frame, and which are maintained for pressing the roll D upward against the gageroll B by means of knucklejoint levers G, and an adjustable spring mechanism, G, substantially such as described in my former Letters 7 5 .Patent, No. 346,389, to which reference may be had for a more full understanding of these pressure devices. The boxes E are provided at their sides with trunnions 6, whereby the box is retained in proper relation to the frame, while it is allowed to rock.

In my present improvement the guideway in the frame is made somewhat wider than the trunnions e, and is planed out so as to .leave a small angle or shoulder, as at a a, ex- 8 tending up and down the guideway. The trunnions are turned off round, and are located centrally upon the sides of the box, and

an oblong slide-plate, E having a circular opening, 6, is placed upon each of the truno nions and fitted into the shoulder or angle grooves a a, to take the bearing and wear of the moving parts. This particular and improved construction of the trunnion-slide and its guideway is a feature of my present inven- 5 tion. The slide-plate E between the trunnion and frame, gives greater accuracy in action, and is more durable than where the trunnion-surface rests against the guidingsur-fa'ce of the frame.

F indicates an auxiliary cutting. or clearing blade disposed at the back of the feedroll D, and supported at its ends in connection with the journal-box E, or by an annular bearing IOO that works upon and maintains its position in concentric relation with the axis of the roll, so that the cutter-blade and roll will remain at the same adjustment relatively to each other, regardless of the upward and downward motion of the boxes. The clearing-blade F is preferably disposed with its edge f close to the surface of the roll D at about one-quarter part (more or less) of the circle back from the posit-ion of the splitting-knife, and said clearing-blade acts to shave offor remove any stock or substance that adheres to the surface of the .roll D, so that pieces of leather cannot wind onto said roll or pass around and be caught beneath the stock which is being fed into the machine. The clearingblade could, if desired, be located below or in front of the roll D, for performing in equivalent manner the operation of clearing the face of the roll; but I prefer the construction specified.

The present illustrated manner of connecting the blade with the roll end and journalbox is as follows, viz: An inwardly and downwardly extending tongue, E is formed on or rigidly fixed to the box IE, and a ring-piece or annular bearer, I, is arranged on the neck of the roll D adjacent to thejournals. Said rings are furnished with lugs or projecting parts, as 43 andj, one of which lugs is'confined to the tongue E by a screw or bolt, J, that passes through an opening in the lug j and screws into the tongue, while the other projection, '5,

. serves as a hinge or pivoting-ear for the bladesupporting arm or bracket K, arranged as shown. Said brackets are provided with seating-surfaces, to which the clearing-blade is secured by bolts m, and with side projections, 7c, in which are arranged set-screws a, that turn up against the back or lower edge of the blade, while the lower end of said bracket is confined by means of adjusting-nutsl Z upon a bolt, L, the head of which is pivoted or connected with the lower part of the tongue. (See Fig. 3.) The parts being thus arranged, the lower end of the bracket K can be adj usted and set at a greater or less outward degree from the tongue E", so as to vary the angle of the blade in relation to the vertical, or

plane of the rolls B D and splitting-knife 0,

while the blade can be moved up .or down by the set-screws n, thus giving to its cuttingedge f a very accurate adjustment in relation to the surface of the roll D.

The rings Iare made of slightly larger diameter than the fluted portion of the roll, and serve as gages at the ends of the roll against which the edge of the blade strikes, and thus avoids the liability of setting the cutting-edge of the blade against the fluted surface of the roll, this difference of diameter being just sufficient to allow the edge of the blade to barely clear the roll-surface. As the ends of the blade are attached to bearers I, that are mounted upon the roll-necks and concentric with the axis of the roll, the blade follows the movement of the roll in its springing action to accommodate variation in thickness of stock, but maintains its accuracy of adjustment upon the roll-surface, so that its successful working is at all times insured.

The cutter-supportil'ig bracket K can, if desired, be pivoted upon or attached to the jour nal-boX E, the end of said box being extended or made to take the place of the ring-bearing I, the action being equivalent, so far as the support and maintenance of the cutting-blade are concerned. I prefer, however, to employ the ring or bearing I, as shown, owing to its practical facility of construction and as it avoids annoyance in putting the machine together, and also is not subject to strain or derangement by the roll taking angular position in the frame when uneven stock is run through the machine.

In the operation of the machine the sharp ened edgef of the auxiliary blade shears oif or removes anystock that may adhere to the surface or flutings of the roll D, the blade cut ting off such portions as will not become forced from the flutings in advance of the blade, so that the roll presents an even or unobstructed surfacewhen it meets the stock which is passinginto the machine between the rolls B and D.

I am aware that scrapers have heretofore been used for clearing the surface of a presser or feed roll, and I do not therefore wish to be understood as herein claiming a scraper for such purpose, broadly.

lVhat I claim as of my invention, and desire to secure by Letters Patent, is

1. In a leather-splitting machine, the combination, with the feeding-rolls and splittingknife, of an auxiliary blade the edge of which is disposed in conjunction with the surface of the fluted presser-roll, supported on bearings that embrace the ends of said fluted roll or the roll-journals, whereby the relative adjust ment of the blade to the roll-surface is maintained regardless of the movement of the presser-roll in relation to the gage-roll and IOO splitting-knife, substantially as and for the purpose set forth.

2. The combination, with the rolls B and D and splitting-blade C, of a clearing-blade having its edge disposed adjacent to the fluted surface of the feed-roll D, and a support for said blade suspended from bearings mounted upon or coincident with the axis of said feedroll, substantially for the purpose set forth.

3. The combination, with the feed-rolls and splitting-blade in a leather-splitting machine, of an auxiliary cutting or clearing blade, F, an adjustable blade-supporting bracket sus-' pended from a hearing or ring surrounding and concentric with the roll-axis, and adjusting devices for regulating the position of said clearing-blade in relation to the roll-surface, substantially as set forth.

4. The combination of the roll D, the bearing-boX E, having a tongue or projection, as E, the hinged bracketor arm K, the clearingblade F, secured to said bracket, and the adjusting-screw L, having set nuts Z Z, substan tially as and for the purpose set forth.

5. The collars or bearing-rings I, having lugs i, the brackets K, hinged thereto, the clearing-blade F, attached to said brackets, with the clamping and adjusting screws on and n, in combination with the roll D and journalbearings, substantially as and for the purposes set forth.

6. In a leather-splitting machine, the combination, with the roll D and adjustable clearing-blade F, of collars or supporting-rings, as I, of slightly greater diameter than the roll, substantially as and for the purpose set forth.

7. The combination, substantially as de scribed, of the gage-roll B, splitting-knife O, feed-roll D, journal-boxes E, spring-actuated knuckle-joint arnls G, clearing-blade F, adjustable supporting-brackets K, bearing-rings opening fitting over said trunnionsand their" outer edges fitting to and embraced by angular grooves a in the guidingwvay of the frame, substantially as shown and described.

W'itness my hand this 20th day of August, A. D. 1886.

AARON F. STOWE.

Vitnesscs:

CHAS. H. BURLEIGH, ELLA P. BLENUS.