US1621577A - Leather-working machine - Google Patents

Description

March 22 1927' w. F. BLANEY LEATHER WORKING MACHINE Filed Sept. 12, 1923 2 Sheets-Sheet 1 1,621,577 March 22 1927. F. BLANEY EEEEEEEEEEEEEEEEEEE NE Patented Mar. 22, 1927,

'mr'eo STATES ,aigsu PATENT orrlcs.

WILLIAM I. BilANEY, OI NEWARK, NEW-JERSEY, ASSIGNOB TO THE TURNER TAN- NIH G MACHINERY COMPANY, 01' PEABODY, MASSACHUSETTS, A CORPORATION OI nm'rmwonxmo meme.

Application filed September 12, 1923. -s m1 No. eeaaia.

This invention relates to machines for treating hides, skins and leather of that class in which a bed roll is employed to support the work While a bladed cylinder or 6 roll operates upon the work supported by the bed roll.

In shaving machines, asheretofore constructed, the cutting cylinder has ordinarily been of such a dimension as to present an 10 effective cutting surface approximately twelve inches, in length, although more recently larger cylinders have been employed with an effective cutting surface of about two feet in length. In operating with either machine, it is necessary for the operator to shave a portion of' a skin andto shift the skin repeatedly irt bothlateral and longitudinal directions'to operate upon ad acent portions, the whole operation of shaving a 30 skin requiring the greatest skill in order to obtain uniformity throughout all portions of the shaved skin and to avoid the presence.

of ridges or scores or other lines of demarcation between ad acent areas successively operated upon. Moreover, the shaving of perforated portions of the skin and of the of the invention to secure uniformity. and

a high grade of excellence in the product of the machine, even in operations upon rather medium gr'ades of skins and hides such as those having perforated portions. 1

'With the aboveand other objects and in accordance with important. features I 7 of the invention means is provided inde eg pendent of the feed. rolls and of the shaving cylinder for spreading and smoothing portions of the skin or hide before it is operated uponby the shaving cylinder so that eventually all portions of the skin or hide are 7 the inview.

carried in extended condition to the cylin der without any folds or wrinkles which would interfere with perfect cutting by the cylinder blades in the shaving operations.

Preferably, and as shown, the spreadingmeans comprises'a spreading roll or cylinder in co-operation with-a. surface upon which the hide or skin is extended through the operation of the rotating spreading roll. In the illustrative construction the spreader surface is provided by a bed plate which is yieldingl'y mounted so as to accommodate itself automatically to variations in the thickness of the hide or skin being operated upon. Conveniently, the bed plate is mount,- ed upon the same support wh1ch' carries the supporting feed rollover which the skin is folded approximately midway of its length in position for the beginning of operations, and by this support the bed plate is movedinto-co-operative relation with respect to the spreader roll. Because of the effectiveness of the illustrated machine and particularly of the spreading means, it isv possible .to operate upon the full width of a skin at one time. Hence approximately one half of the skin may be shaved by the illustrated machine at one operation, and the remainder similarly treated at a succeeding operation. There is thus accomplished in two operations an amount of work which) has heretofore required much laborious effort and many operations with a shifting of the skin between each operation.

Other features of\the invention and novel combinations of parts will be described the detailed specification and pointed out in the appended claims. In the drawin Fig. 1 is an end view of amachine 's o w ng one embodiment of the invention; I V Fig. 2 is a front v ew of one end portionof themachine shown in Fig.1; N Fig. 3 is a sectional view m a direction sfrom front to rear of the machine showing arts in workingposition; and 1 F1g.' 4 is a view similar to Fig. 3 with the su porting, roll in work receiving position.

n the drawings the machine is shown as.

provided with relatively heavy end frames 6 which carry bearings for the 'various rolls and cylinders which constitute the work operating parts of the machine. The work mayconsist of hides, kips, skins or pieces 65 unshav'edpart suspended over the feed roll of leather of various origins, and nolimita-- tion is to be inferred because of the use of the word skins in referring to the work.

Supported in the upper portionsof the end frames is a feed roll 8, sometimes called a pinch. roll, carried by blocks 10 slidably mounted in guideways 12, a spring 14 being provided for pressing each block 10 yieldmgly in a downward direction to hold the feed roll 8 yieldingly against a co-operating feed roll 16. Preferably, the latter feed roll is mounted in bearings at the upper ends of arms 18. pivoted at 20 in the end frames 6. When the machine is at rest the arms '18 support the feed roll 16 in the position shown in Fig.4, that is, spaced from the feed roll 8 so thatthe work may be readily a from the shaft 36 is yieldingly applied to the arms 18.. When the bell crank 22 is moved to the position shown inFig. 1 the arm 18 is rocked to carry the feed roll 16 into position beneath the upper feed roll -8 whereby the skin inposition on the lower feed roll is firmly enga ed so that it will be fed upon rotation of t e feed'rolls. .Preferably the supporting feed roll 16 has a rubber ortion 38 to support and feed the work.

ounted in the end frame 6 to the rear and below the upper feed roll 8 is a cylinder 40 having cuttingblades 42 arranged helically on its surface according to the usual construction in which the blades extend inopposite directions from the longitudinal center of the cylinder. These blades have the sharpened edges usual in cylinders utilized for fieshing or shaving operations on skins or hides. When the feed roll 16 is moved into operative'position, indicated in Figs. 1 and 3, the skin is pressed against the surface of the cylinder 40 by the rubbercovered feed roll 16 and subjected to a shaving operation at the same time that it is being fed by the rolls 8 and 16. In the illustrative construction the feed rolls 8 and 16 turn in the directions indicated by the arrows in Fig. 3 to feed the work out of the machine during the operation of the shaving cylinder 40. Hence, only that part of the skin below the point of contact with the cylinder 40 at the time that the machine is started in operation isoperated upon while the feed roll 16 is maintained in operative position. The machine must then be stopped with the feedmoll 16 the open position of Fig. 4, and the work reintroduced with the 16 below the level of a lane passing throu h the axes of the feed r0 1 16 and the'cylin er proper operation of the cutting means.

extended so as toinsure In the skin in extended condition. Not only '40. Upon starting the machine again the p the illustrative construction the means for spreading the skin being operated upon comprlses a cylinder 50 having blades 52 arranged helically on the surface of the c linder. the edges of the blades being dul or somewhat rounded, retainin however, sufficient edge to engage t e skin for a spreading and more or less stretching operation in order that the skin may be properly extended for the operation of the cutting cylinder. It will be understood that the helically arranged blades 52 extend in opposite directions from" the lengthwise center of the cylinder so as to spread the skin laterally.

Means is provided for driving the cylinder;

50, the said means com trated construction, a

engage a pulley 56 on the end of the shaft of the cylinder 50, the opposite end of-the rising in the. illuselt 54 arranged to" belt passing around a pulley 58 on a counter shaft 60 driven through atrain of gears including gear 62 on the shaft 36. For cooperation with the spreading cylinder '50 there is provided in the illustrated machine, a bed plate which extends longitudinally of the cylinder 50 and is pivotally supported '-by arms or'e'xtensions 72 (Fig. 2) having pivotal connection with the shaft or trunnion portions of the feed roll 16. As shown, the bed plate 70 is concaved transversely (Fig.

3) so that a curved surface of considerable extent is provided for effective, co-operation with the periphery of the spreading cylinder 50 in spreading operations upon the skin. Preferably, the bed plate 7 O is backed by spring means which will enable the bed plate to adjust itself automatically to varia- I tions in the thickness of the skins or hides being operated upon. In the construction shown the supporting arms 18 are each provided with a projection 7 6 having a stud 01' boss to seat one end of a spring '78, the

other end of which engages with a corre sponding projection or boss on the rear surface or the bed .plate 70. In a projecting rib or flange onthe arm 72- isa perfora-. tion which is interiorly screw-threaded to.

receive aset screw or bolt 82 which carries a lock nut 84 so that'the screw or bolt may.

be properly adjusted to secure proper tension of the spring 78, the end of the bolt or screw being normally in contact with a stop or abutment 86 fixedly secured to or integral with the corresponding arm It. will be understood that by adjusting the screws or bolts 82 thesprings .7 8 may be placed under any desired amount of tension so that there will be an initial tension in. the springs, one at each end of the bed plate, tending to holdlthe bed plate 70 with suflicient resistance against the spreading roll 50' to insure proper -co-operation between these parts in s reading operations on theskin .or hide. rom the foregoing descrip tion 'it will be clear that the'hed plate 70' moves with the feed roll 16 when the supporting. arms 18 move to open position, which occurs when the machine comes to rest after each operation in accordance with the usual and Well known mode of operation of this type of machine.

In operating with the machine,,a skin or hide is thrown over the lower feed roll 16' and over the bed plate 70 while the arms 18 are in the open position shown in Fig. 4,

the skin being folded over the roll 16 along a line corresponding,approximately to a central fold in the skinor hide. understood that allof the rolls and cylinders may be of a length to accommodate and operate upon the largest skins or hides when fully spread out. gUpon starting the machine the arms 18 are at once operated to move the feed roll 16 and thebed, plate 70 intothe closed position shown in Figs. 1 and 3 where they are held while all of the rolls are rotated to feed and to operate on the skin or hide. In the construction shown the feed rolls 8 and 16 rotate in the 'direction of the arrows to feed the skin or hide .out of the machine and as the skin moves alongv under the action of the feed rollers the cylinders 40 and perform their operations of spreadin and shaving the skin orhide, the ,spreading o eration taking place in such relation to t 1e operation of the cylinder 40 that the skin is properly spread for the operation of the cutting cyl-" inder 40. When the skin has been completely fed from the machine the latteris stopped by releasing the usual treadle, whereupon the supporting arms 18 move to the 0 en position of Fig; 4 so that the skin -may we reintroduced into the machine with the unshaved part thrown overthe feed roll 18 and the-bed plate in position for operation by the cutting cylinder 40, care l;e-

ing taken that the unshaved portion of the skin or hide is positioned below a line joining the centers of the feed roll 16 and the cutting cylinder 40., This second operation of the machine completes the shaving or fleshing of the .skin or hide. observed that-thesharing of the skin or It will be It i will be hide by thismachine calls for little in the way- .0 expert knowledge, such as is absolutely necessary in shaving operations where the regular commercial machines are employed. Furthermore, the labor of the operator is reduced simply to the introduction and removal of the work, whereas in theconnnercial operations, as practised today,-

the operatormust hold the skins and exercise very considerable tension on the skins while they are being shaved. By means of applicants invention there is secured uniformity in the thickness of the shaved skins or hides and also a greatly increased output.

It is to be understood that the spread- --mg meansherein disclosed is not limitedin Its applicatlon to shaving machines but may be applied to machines for fleshing,

unhairing, scrubbing, brushing, cleaning,

setting, pulling-out, and other analogous uses. 1

Having thus described my invention, what I claim as new and desire to'secure by Letters Patent of the United States is 1. In a machine of the character described, a work operating member, feed rolls for feeding the work, means comprising a rotary member for spreading and smoothing the work for the operation of said operating member, and a-member movable to press the tion for the operation of said member, said means comprising a spreading. roll in cooperation with a member over which the vwork is spread by the spreading roll.

4. In a machine of the character described a cutting cylinder, upper and lower feed rolls for feeding the skin or hide past the cutting cylinder, means for supporting the lower feed roll so that it may be moved from work receiving to work presenting position, a bed plate carried by .the supportmg means and having a curved supporting surface upon whiclrthe skin or hide may be spread, and a spreader roll arranged for co-operation with the bed plate to spread the skin oivhide for the operation thereon of the cutting roll or cylindelx.

5. In a machine of the character described. a cutting cylinder, feed rolls for feeding the work past the cutting cylinder, a spreading roll, and a member arranged for co-operation with the spreading roll to spread the work in extended condition priorto .the

operation ,thereon of the'cutting cylinder.

' support and movable into co-operative relation with the spreader roll to effect spreading of'the work.

7. In a machine of the character described, means for operating on work, feed rolls for feeding the work past said means, a spreader roll locatedto operate on the work to spread the same in extended'conditiom-a member having a surface for co-operation with the.

spreader'roll, and a support for said member movable to carry it from 'work' receiving position to work presenting posit on W1threspect to the spreader roll.

8; In a machine of the character described,- means for operating on work, feed rolls for moving the work past said means and for I supporting the work during the operation of said means,-a spreaderroll, and a member having a curved surface for co-operation with the spreader roll, said member and spreader roll being relatively-movable in a direction toward and from each other so that the work maybe introducedwhile they are in opened position and subsequently oper-' ated upon to spread the same when they are brought into co-operative relation.

In a machine of the character described, a cutting cylinder, feed rolls for' feeding the work and for supporting it for theactiorr of the cutting cylinder, and means comprising a spreading roll stationary-in space and rotatable with the feed rolls and in a direction opposite to that of the feed offlthe work for spreading the work prior to the operation ofthe cutting cylinder. r I 10.) In a machine of the character' described, a cutting cylinder, feed rolls for feeding the work and for supporting it for i the action of the cutting cylinder, and spreading means comprising a rotatable member and a bed plate having a surface of substantial extent over whichthe work is moved by the feed rolls while being "spread in extended relation before it passes to the I feed rolls and into the field of operation of the cutting cylinder.-

11. In' a machlneof the character. de-

- scribed, a cutting cylinder, feed rolls for feeding the work and for supporting it for the action of the cutting cylinder, and

spreading means for spreading the skirnin extended relation prior to'the operation of the cutting cylinder, said means comprising a bladed cylinder in co-ope'ration with a bed curvedsupporting surface upon which the skin or hide may be moved by the feed rolls to be spread in extended condition, and a spreader roll arranged for co-operation with .the bed plate to spread the skin or hide for the operation thereon of the cutting roll or cylinder.

13.'In a machine of the character 'described, a cutting cylinder, feed rolls for feeding the work past the cutting cylinder, a spreading roll, a bed plate arranged for coo-operation with the spreading roll, and means for yieldingly backing the bed plate. so that the spreading means accommodates itself automatically to variations in. the thickness of the work. a 4

14. In a machine for shaving hides, skins, leather or other similar pieces of work, a cutting cylinder, up er and lower feed rolls for feeding the wor past the cutting cylinder, a spreading cylinder located. at one side of the cuttin' cylinder, a support for the lower feed rol movable to open position so that the work may be placed overthe lower a feed roll, and a bed late carried by the said support and mova 1e therewith into co- .operativerelatioh with the spreader roll. 1

15. In a'machinefor shaving hides, skins, leatherg or-other similar pieces of work, a cuttingcylinder, feed rolls for feeding the work past the cutting cylinder, a spreader roll located to .operate on the work to spread the same in extended-condition, a bed plate havingl a curved surface for co-operation witht bed plate movable to carry it from work 'receivin position to work presenting position wit respect to the spreader roll. i 16. Ina machine for shaving hides, skins, leather or othersimilar pieces of\ wot'k,:.a cutting cylinder, feed rolls for moving the work past the cutting cylinder and for supe spreader roll, and a support for the.

porting the work during the operation of the 7 cutting cylinder, a spreader roll,,and a bed plate having a curved surface for co-operation with the spreader roll, said bed pl-ate and spreader roll being relatively movable in a direction toward and from .each other In testimony whereof I have signed my ILLIAM name to this specification.

v Y W E. BI iANEY.

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