US1842534A - Cheeking machine - Google Patents

Description

Jan. 26, 1932. A. c. BRILL 1,842,534

CHEEKING' MACHINE Filed Jan. 7. 1928 Fig. 3

INVENTOR Patented Jan. 26, 1932 UNITED STATES PATENT OFFICE AUGUlsT C. BRILL, OF OBERURSEL, NEAR FRANICEORTON-THE-1VIAIN, GERMANY, AS-

SIGNOR TO THE TURNEH TANNING MACHINERY COMPANY, 01" PORTLAND, MAINE,

A GORPORATBTUN F MAINE CHE'EKIITG MACHINE Application filed January 7, 1928, Serial No.

This invention relates to cutting machines and is illustrated as embodied in a checking machine for reducing the thickness of portions oi hides and skins over certain areas as, for example, the head and neck portions of calf skins, although in various respects the invention is not limited to machines for per- ;t'orn'iing such operations.

Checking machines have customarily been provided with cutters movable in a direction transverse of that of the feeding movement of the work to produce a drawing out, with bed rolls to support the work during the operation of the cutters, and with presser members for holding the work against the bed rolls. While these machines operate efficient: ly when the cutters are kept in sharpened con dition and the work is properly conditioned before being presented to the machines, it has been found that as the cutter becomes dull or if the work is too hard, the work has a troublesome tendency to move sidewise with the cutter.

It is accordingly an object of this invention to provide improved means for insuring that he work will not follow the cutter during reciprocations of the latter transverse to the direction of feeding movement of the work, even if the cutter be allowed to become somewhat dull, or if the work due to improper conditioning thereof should present hard spots to the cutter.

This object is conveniently accomplished, in the illustrated machine by providing means for pressing the pieces of work against a work support wherein the pressing means comprises a presser member having on its work engaging face one or more sharp edges provided by grooves or ribs extending substant-ially at a right angle to the path of movement of the cutter. As illustrated, a plurality oi presser plates are arranged in side by side relationship and each is provided with a concave surface to co-operate with a bed roll throughout the whole work supporting length of the latter, the concave surface of each presser plate having a plurality of grooves all parallel and extending in directions at right angles to the path of movement of a reciprocatory cutter, the grooves of all of the presser 245,222, and in Germany January 11, 1927.

plates combined, being so numerous as to engage with such a multiplicity of closely spaced portions of the work throughout the whole width thereof as to hold every portion thereof against lateral movement during the reciprocatory drawing out of the cutter.

These and other features of the invention and novel combinations of parts will now be described in detail and pointed out in the ap' pended claims.

In the drawings,

Fig. 1 is a rear elevational view of a cheek ing machine showing one embodiment of the invention Fig. 2 is a View of the essential elements of the machine taken along the line II-II in Fig. 1;

Fig. 3 is a view of the work engaging face of one of the presser members; and v Fig. 4: is a vertical, transverse section of the presser member shown in Fig. 3.

In the illustrated checking machine a piece of work such as a hide or skin is supported for the operation of a cutter 8 by means of a bed roll 10. For co-operation with the bed roll in feeding the work to the cutter there is provided a feed roll 12, the latter being preferably covered with a tightly fitted rubber sleeve 13 for frictionally and yieldingly engaging the work. In order that a piece of work may be readily introduced into the feedmg means comprising the two rolls and 12, the roll 10 is mounted rotatably in the upper ends of two arms 14, each arm being pivoted at 16 to a frame member 18 and having at its lower end a pivot pin 20 for connection with an operating pitman (not shown). lVhen the pitman is reciprocated the arms 14 are rocked about the pivot 16 to move the bed roll 10 first to work receiving position away from the cutter 8 and feed roll 12. Upon movement of the arms 14 in the opposite direction, the bed roll 10 is moved into co-operative relation with respect to the feed roll 12 and presents a portion of the work 22 to the cutter 8, as most clearly disclosed in Fig. 2 of the drawings. As soon as the bed roll 10 reaches work presenting position with respect to the cutter 8 it begins to rotate in the direction of the arrow (Fig. 2),

work presenting position with respect to the.

cutter 8 the latter beginsto reciprocate, lengthwise of the bed roll and parallel to the axis of the work supporting surface thereof, so as to cut through the piece-of---work-- with a drawing out designed to secure more.

uniform and effective cutting of the work thanis, ordinarily accomplished by. a stationary knife. The. cutter 8 is mounted upon a .reciprocable bar 38 adapted to slide. in guideways. provided by suitably shaped recesses in the standards or frame members 18. While any suitable arrangement may be providedfor reciprocating the bar 88, that shown comprises a pitman 40 pivoted at 42 to the ban38 and itsother end pivoted eccentrically J to a wheel 44 secured upon a shaft l6 arranged to be driven from any suitable source of power.

In orderto prevent the piece of work from following the reciprocations of the cutter,

. thereare provided presser members each mounted. upon itsown individual holder 52,

the lower ends of the holders 52 beingsecured to a bar 54 which extends from the. frame member or standard 18 atone end of themachineto the corresponding frame member or standard 18 at the other end, ofthema- V chine. It will be observed upon inspection i dojnot project above the-surface 56, it is clear that the ribs with sharp edges 57 may of Figs. 2 and 4, that each pressermember 50has a concave surface 56 forengagingthe work so as to press the latter into close contact with the correspondingly convexly shaped surfaceof the bed roll 10. Furthermore the concave surface-56 is provided with a number 7 of-grooves 58-parallel toeach other andfparg-allelalso to the direction of feeding move-- mentof the work the pur-poseof the grooves being; to guide'the workiin thefeeding direction and to maintain it against lateral movement which might otherwise take place byreason of friction between the cutter and the work as the former reciprocates transversely of the path of'the work during, cutting operations. grooves 58 have rather sharp edges 57 so as to engage the work more effectively than would otherwise be the case. Aswill be observed from.-an inspection of Fig.4 the spacedpar? allel grooves 58 provide ribs'59 parallel-withthe grooves. Although the ribs thus formed be regarded as the guiding; means. From another viewpoint the grooves serve as. the, guiding-means sinjcethe substanceof the hide;- or'skin will engage therem due tothe pres.--

Preferably and as shownfthe.

of Fig. 3, that each presser member 50 is provided with many closely spaced grooves each having two sharp edges 5.7 ,Sincethepresser members extend in side-by-side' relationship clear across the length of the work-supporting surface of the bed roll 10, the sharp edges 57 are; so .numerousias to. engage .Wltl1:SUGh-:a.. multitude. of closely. spaced. po'rtionsof. the piece of work-throughout thewholewidth of the latter as to hold every portion of the work against lateral movement due to a tendency to, follow the reciprocatory cutter during the operations of the latter. Uponinspection of Fig. 2 it willbe observed that. theupperzends of the presser membersv 50. extend. closelyftoand slightly overlap the plane ofthe cutting. edge of the cutter 8 soas to. guidethework and control it while thevery endportion. of. the latter isbeing operated on, thus finsuring. a. clean .cut to the very end of the piece of: work. l

In operatingv with the .machine illustrated in thedrawings, the operator will'jintroduce a piece of .work,over the bed 1 011 10 while thelatter is in. work receiving position, that is, to the leftof the position .of the bed roll :in: Fig.2. For. the proper operationof the ma; chine .it is necessary that. the head and; neck. portionsof .thehide or. skinv be ,thrown over. the bed, roll .10 -sothat. upon ;v movement .of; the-latter-to workptesenting position with? respect to the-cutter 8, these portions-of the; hidesor skinQwill be located. below the cutter. '10s IVhen, the bed roll. 10 movestowork present; ingpositionthe knife8 begins toreciprocate and the feed rolls 10 and 12 begin to rotate: sothat'the cutter willoperate ,toqsplita :por tion 60 from the-head .and neck portions of the hide -or skin thereby rreducingthese. por tions :to substantially. the thickness of the. body-portionof thehide or skin. To accom-: plishthis, it is obvious that the cutter 8 and bed rolllOshould be relatively. adjustable. by. means ,not. shown' ,so v .that ;in their; work. operating positions the cutterwill removean. excessth-ickness 3' ust sufli'cient to even the head and neck portions. with the .rest of the .hide: orskin. While thefeed, rolls. l0iand 12, rotate. tofeed thetwork past the cutter,v the members 50serve as pressing and guidingmembersfor. the work andparticularly. as means. for pre-. venting-theworkffrom following the recipro w cations of the cutter.

Having described my-invention; whatl claim as new and desire to. secuieby Letters Patent of the -United States is v 1. Inea cutting machine,.a workysupport, meansfor. feeding piece .of-.;work. .over the. 125 work. support aj cutter-, movableein -.a direction; transverserof the .path. pfthe. ,worlnfor operating onr the; workwhile it .is. backed by theworksupport, andimeansi for pressi-ngithe-r work against the-Work: support E prevent-late L eral movement of the work during movement of the cutter in a direction transverse of the moving work, said means comprising a memher having a pin 'ality of sharp edges extending in a direction at a right angle to the cutter.

. right angle to the path of movement of the cutter.

3. In a cutting machine, a work support, means for feeding a piece of work over the work support, a movable cutter for operating on the work while it is backed by the work support, and a plurality of members each having a plurality of grooves extending all in the same direction at a right angle to the cutter to prevent movement of the work in a direction transverse of its feeding movement,

i. In a checking machine, a work support for supporting a piece of work while it is ruulergoing cutting operations, means cooperating with the work support to feed the piece of work, a cutter movable in a drawing cut in a direction lengthwise of the work support to split a piece of work while it is backed by the support, and means comprising a plurality of presser members for press ing the work upon the work support, each presser member having a plurality of sharp edges extending in a direction at a right angle to the cutter to prevent lateral movement of the work while the cutter is moving in a direction lengthwise of the bed roll.

5. In a checking machine, a bed roll for supporting a piece of work while it is undergoing cutting operations, means co-operating with the bed roll to feed the piece of work, a cutter movable in a direction lengthwise of the bed roll and laterally of a piece of work on the bed roll to split the work while it is backed by the bed roll, and a plurality of presser members for co-operation with the bed roll to guide the work, each presser member having a groove extending in a direction substantially at a right angle to the path of movement of the cutter and operative to prevent movement of the work with the cutter as the latter moves laterally of the work.

6. In a checking machine having a bed roll for supporting a piece of work during cutting operations, a roll for co-operating with the bed roll in feeding the work and a reciprocable cutter movable in a path parallel to the axis of the supporting surface of the bed roll, means for pressing the work against the bed roll and operative to prevent the work from following the cutter during reciprocation "7 thereof, said means comprising a presser member having a plurality of ribs extending in a direction at a right angle to the path of the cutter.

7 In a checking machine, a bed roll for supporting a piece of work during cutting operations, a roll for cooperating with the bed rollin feeding the work, a reciprocable cutter movable in a path parallel to the axis of the supporting surface of the bed roll, and a plurality of members for pressing the work against the bed roll, said members op erating to guide thework and having grooves which are parallel with each other throughout the whole of the work-supporting length of the bed roll and extend in a direction substantially at a right angle to the path of the cutter.

8. In a checking machine, a bed roll for supporting a piece of work during cutting operations, a roll for cooperating with the bed roll in feeding the work, a reciproeable cutter movable in a path parallel to the axis of the supporting surface of the bed roll, andv a plurality of members for pressing the work agalnst the bed roll, each presser member having its work engaging face provided with i a sharp-edged groove extending substantially at a right angle to the path of reciprocation of the cutter.

9. A checking machine having, in combination, a support for a hide or skin, a member for engaging a hide or skin on the support to effect a feeding movement of the hide or skin, a cutter operable transversely of the direction of feeding movement of the hide or skin and constructed and arranged to split portions from the hide or skin, means for operating the cutter, and means for pressing the hide or skin against the support, said means comprising a plurality of presser members extending across the length of the work supporting surface of the support in side-by-side relationship, and said presser members having a multiplicity of sharp edges extending 1n a direction at a right angle to the path of the cutter and operative to engage a hide or skin in a multitude of places to prevent the latter from moving with the cutter trans versely of the direction of feeding movement of the hide or skin.

10. In a checking machine, a bed roll for supporting a piece of work during cutting operations, a roll for co-operating with the bed roll in feeding the Work, a reciprocable cutter movable in a path parallel to the axis of the supporting surface of the bed roll, and a plurality of members for pressing the Work against the bed roll to guide it to the cutter, each presser member having a concave Work engaging surface provided with a multiplicity of sharp-edged grooves extending in a direction substantially at a right angle to the path of movement of the reciprocable cutter, the sharp edges of the grooves being so numerous as to engage with a multitude of close- 1y: spaced throughout thereciprocable cutter; 1

11. 1A cheekingfmachine having, in coma supportforalnde or skin,a membination, her: for engaging a hide or skin1ion1- the supporttto efiect a feeding movement of the hide oriskin,

feeding movement of the hide or -skin and constructed and arranged to split portions from. the. hide or skin, means for operating the cutter, and means for pressing the hide or skin-against thesupport and for. guiding the hide or skin: to the extreme rearzedge portion said last-named means thereof to the cutter, COII1 p1?lSII1g p17QSSI members havmg sharp edges extendingl'inia direction at hide'or skin from following the cutter, the

presser members being arranged slightly to overlap thecutterito control the hide orskin' 4 so that it is cut tothe very end-thereof;

Inxtestimony "whereof I name to this specification;

AUGUST 0. v BRILL.v

portions of" the piece of: work the Width ofithe'latter toprevent movement of any portion of thework' with a cutteropera'blein a direction sub--- stantially: at a right angle tothe direction of F a right I angle to thEp&tl1"Of'-the cuttertoholdthe have signed myf

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