US2383025A - Heel breasting machine - Google Patents

Description

Aug. 21, 1945.

F. TAYLOR HEEL BREASTING MACHINE Filed Aug. 12, 1944 2 Sheets-Sheet 1 fiwentor Fred P Taylor Aug. 21, 1945. F. P. TAYLOR 2,383,025,

HEEL BREASTING MACHINE Filed Aug. 12, 1944 2 Sheets-Sheet 2 1 Inventor Fi'ea'l? Taylor is anded in a it?! 5 h fiee n he er: ampl e Iand. ens nesifi essw t sif k s' .suprb an ed e tweed; nd ,pgts

meetin t meas m swe hmzq ll whi htexten l ou w d ro. a

Patented Aug. 21, 1945 UNITED t is 23833 2 t 1" aEtaett e Fred 1 Taylor, Auburn, Maine, assi g'nor to United "Shoe Machmerx Corpo a i n,

1-, a. wmwwfln of emls se Webs te Apglioation l2, 194 5 Serial No. 549,181

means- (01-. 1 :41)

This invention relates to trimming machines nd i ill strat a embod ed in heel h f stii ashin I Variws W l s i. ma v I-i s t levies re p:

fewer? knife ev hle est h e i ife 'e 5 to br a n hes w ha e beeper It a e fo nd,- hpweve t at 5 a h nes e c sion li hi pensive to manufacture,

he up b ea t ed e Q th kni n eme g n frqm tb hee h b easti s cut to h ve eath r be ime e rred t a a t wen??? rom 4 1! p r ieqt' g s theme t ha a v. ate a an. an a usually removed a aratef e attgnfbefoijle t atta hmenw t e .h the s t is an ob ect re 1 e p sent nmnt gnftp provide a s mp e m strwis mma t t,

9 the ebwe mfimi ed eifiwte u e t which bait-H nleefiherb srd heel ,qs iqls tn (e 1 brea ed-i With m sm s edw n in s? aneewith M e i -i an iqnbnees ed he?! se t he sais edgs 1 o su e mne e pew .t e mit pprt en th me-Mobs pre 'ra 'iii h i lustratia washes h 1 stew 3 has a wor k recfiiv t approximately 30 uh H itbeafl e tica et anti}? 1 w t n? ed e of the ireeimeet es' th vett qa iiap 5 3 s l n t mm: i is d s -.h 9.lS m h-t w ma -w-b widit i .ent ntw ting themeangnd of he 1 3? thificlined" surface'of 'tlie riid'suppo'rt andthe town-gene tifthe attachingfaceoi the heelin "nga'ement the horizontal face of the tubb'eiibbc anint'ermediat portion of theattach ifig' face ofthe Heel beingspace'd from'said edge oftherigid-"uppoit The heel}. if desitable, may {be fiosi'tion'edwidthwis upon the cutting bed by agage" shabed and arra'iiged'to be engaged by the side" afth hel. I

' As the knife descends into en a ment W the tread Iace' bfth unbreasted heel mounted iifibnftl'ie'cutting'bedfit forces the forward end of the heel into'the rubber block, permitting said intei'india't'e portion of the attaching face of'the heel to be 'forced against said edge" of the support, 'With' the result thatportionsof'the "attaching face ofthe heelin thevicinity of saidedg are tensioned crosswise of Jtheedge. When the knife 'Irioves thi'bughsaid tensioned portions of the heel adjacent to said edge and past said edge, the attaching faceibreast'fedge of the rheel is out clean.

After the heel breasting-chip has been trimmed from the heel andi the lknife sta rts to pisevthe Jf "rubber-block springs backto its origipal sha pe and position; causing theehip t jimmed ,fl om the heelto be ejected oyerthe byeast gage and out of the machine. t 1 t it i The above simple, non -px eci siontheel .breasting machine will quickly and efiectively breast unattached built-tup leatheriheels; a clean @111; be-

ing formed where the knife through the heel, e e t ou h t e cutt n e e o he-19gb mi se he w rk su g i 9%? P ttin e by a substantial maigin.

i h M eatur s of th med an ll be cutting start Fig. 8 isa pers ies-te to Fig. 9 shows the heel of Fig. 8 after it has been breasted by the above machine.

The illustrative machine is described with refer ence to trimming an unbreasted heel 20 (Figs. 3, 4, 5,- 6 and 8) comprising a plurality of leather or leatherboard lifts to provide a breasted heel 22 (Figs. 7 and 9). v I

The unbreasted heel is positioned, as will appear later and as best shown in Figs. 3 and 5, upon a cutting bed 24 (Figs. 1, 3 and comprising a rigid support or table 26 which is secured by screws 28 (Figs. 1 and 3) to a bracket 30 fastened to a frame 32 (Figs. 1 and 2) of the machine by screws 34. p

Slidably movable in vertical guideways 36 (Fig. 7

1) of the machine frame 32 is a slide 38 operatively connected to a treadle 40 through a, link 42. The treadle 40 is mounted upon a fucrum pin 44 carried by the machine frame 32 and when the machine is idle is held in its raised inoperative position, shown in Figul, by a spring 46. Upward movement of the treadle All is limited by the engagement of the upper end of the slide 38 with a cover plate 48 secured by a screw 50 to the upper part of the machine frame. -Themachine has only two legs and is secured-by suitable clamps (not shown) in an upright position against a wall.

Formed integral with and extending .forward from the slide 38 is a carrier lug 52 (Figs. 1 and 2) provided with a vertical groove 54 in'which fits a shank. portionof a knife 56 having at its lower end a cutting edge 58 (Figs. 2 and 3) the end portions of which are straight and the cen tral portion of whi'ch is incurved. The knife 56 is secured to the carrier lug 52 by a-clamp plate 60 forced against the knife by a pair of screws 62. To insure against displacement of the knife 56 as it is forced against the heel, there are provided thrust screws 64 threaded into the carrier lug 52 and having their lower ends in engagement with the upper end of the knife.

The table 26 is angle shaped (Figs. 1' and13) as viewed from the side of the machine and comprises a face or work plate 66 (Figs. 3, 5, 6 and '7) which is secured by screws 68 (Fig. 3) to the main portion of the table, flat upper faces 16, 12 of the main portion of the table and the work plate, respectively, being in alinement and inclined at approximately 30 to the horizontal. The unbreasted heel is positioned lengthwise on the table 26 by a breast gage or abutment"!!! which is secured to the bracket 52 by screws 15 and against which the forward end'of the unbreasted heel rests.

As best shown in Figs. 5 and8, the attaching face or cup 16 of the unbreasted heel 20 is concave, the maximum concavity being approximate- 1y of an inch. Accordingly, inorder effectively to support the forwardend. of the unbreasted heel, the work plate 66 has an upstanding protuberance 18 (Figs. 3 and 5) the upper face of which is approximately complemental to opposed portions of the forward end of the attaching face of the heel. Aforward edge 80- (Fig. 3) of the protuberance 18 forms with straight edges 82 of the plate '66 a. continuous edge past which the cutting edge 58 of the knife 56 .passes when said knife is moved downward upon depression of the treadle 40. The cutting edge 58 of the knife 56 lies in a single plane and, as above explained, has a central concave portion and lateral straight portions, the cutting edge of the knife being approximately complemental to the combined edges 80, 82 of the work plate 66. It will be apparent from the foregoing that, in breasting the heel, the various portions of the cutting edge 58 of the knife 56 move approximately the same distance below opposed portions of the edges 80, 82 of the plate 66. The breast gage 1'4 has a raised central portion 84 (Figs. 3 and 5) similar in shape to and arranged opposite the protuberance 18, the arrangement being such that the breast gage 14 throughout its width extends approximately a constant distance above the opposing portions of the continuous edges 86, 82 of the work plate 66.

In order to insure against a rear vertical face if the protuberance I8 interfering with the presentation of unbreasted heels to the machine. there is provided a filler piece 86 which is secured by screws 88 (Fig. 3) to the main portion of the table 26 and has a longitudinally and laterally beveled upper surface forming substantially a continuation of the upper surface of the protuberance 18. v

The heel is usually centralized upon the table 26 with suflicient accuracy by sliding it down over the filler piece 86 andonto the protuberance 18 to the position shown in Fig. 3. If desirable, however, an edge gage 90 (Figs. 3 and 4) may be provided, such a gage comprising a flange 92 which is engaged by a side of the heel being positioned in the machine. Secured to an offset downward extension of the flange 92 is a rod 94 a portion of which fits in a transverse bore 96 (Fig. 4) of the table 26. The edge gage 96 may be moved into different adjusted positions lengthwise of the bore 96 to move the inner face of the flange 92 into alinement with any one of several size calibrations 98 (Fig. 3) on the table, by turning a nut I00 which is threaded onto the rod 94 and is constantly forced against a side of the table 26 by a spring (02 (Fig. 4).

A true shearing actionbetween the edges 80, 82 of the work plate 66 and the cutting edge 58 of the knife 56 cannot be relied upon since the illustrative machine is not of the precision type. In the illustrative machine, which is simple and inexpensive, the knife 56 is preferably so guided that it clears the edges 80, 82 of the work plate 66, said clearance, as shown in Fig. '7, being slightly exaggerated for purposes of illustration, thereby insuring that were the knife to spring slightly or to have its path of movement otherwise changed during the heel breasting operation, it will not strike the edges of the work plate. It has been found that unless a resilient work supporting block I06, which cooperates with the rigid support 26 and will later be referred to in detail, is provided, the knife 56 in cutting through the attaching face 16 of the heel forms an upper breast edge which has fibers or whiskers, such as above referred to,,extending from it. Such a ragged edge, of course, is objectionable and is usually buffed or otherwise trimmed before the heel is attached to the shoe.

The resilient block I06, which is preferably made of live rubber, is interposed between the breast gage 14 and a vertical face I04 of the work plate 66, forwardly and rearwardly extending elements of the upper face of the block being arranged approximatelyhorizontally. The upper face of the rubber block I06 is provided with a centrally located upwardly extending protuberance I08 (Figs. 3 and 5), the upper face of which corresponds generally in shape to the upper face of the protuberance 18 of the work plate 66 and is approximately complemental to the forward end portion of the attaching face of the smallest unbreastedi eelltq c a chin -1.; The upneruace gt fictheln hr l extendszforwandly to thaedges gfl 82 ,of the p at 6e d mbe reterr dglz step portion. ofitheicuttilig h8g1 t eupper sur ace of the rieidmp t port 26 constituting an inclined work, portion of the cutting bed. The rubb nblocklllt is preferablyi;compressed;slightly between the breast, gage 114 and; the avertical vli Work plate: B5,.aWhiGh faceunamrb 15650. forming with the upper surfacell the edges BIL-.821 .andsiasl 1 6 811 approxima e uponxthe upper: faceyofethe rubbenlblqqlt ,154; ll? heel .being positioned: lengthwiselonith bed by'the breast gage :14 and beinelpo widthwise-on..-said.;;bedsby the protuberanceglt i and/orlthe flange 92.ofathevedgegage ml g Itw1ll be noted (Fig; 5) -that.,theunblfeasted;,heel

its initial position upon thetcutting hedge .J, its attaching face 1.5 spaced fromthe edges 80; 82

of thework-plateGBn i g;

When pressure; is first applied. against by the downwardly mOvingknifafiB, the, forward end of the heel is: forced into ltlieirubbelbb ck I06, asshown in.Figadeuntilithe attachin i 0f the heerhas been:forcediagainst'the edge 8.0 1."

82-of the work plate 66.? sgthe-knlfeafi tinues gto :descend,titmoves slightl-ylzbelp edges 80182; as vshown,ineli'ig; 7, the iknifeam .sing said edges bya slightmargin aslaboyerexplained,

and pushing slightlyinto the upper ,pprtionof ,the

block 1 U6. It will be. apparent. thatebfifblfidhe plate 66, fibers of the portionsrofttheiunbreasted heel lying just above'isaid edges which, as, aboye stated, are in effect'jonei continuous edge, are. tenr sioned crosswise bf saidedgelbecauseiofj;the,upwardforce applied against the :heel bptbmmmpressed rubber block I06; with the result that the knife in cutting through the heel trims .1 1 sioned fibers-clea1i; thereby forming a clean-cut attaching face edge of the breast of the heel.

The rubber block I06 may be described as being yieldable under pressure of the knife to permit a portion of'the heel to be forced against and tensioned crosswise of the edges 80, 82 of the work plate 66 preparatory to the severance of said portion of the heel. Itwill be noted that the rubber block 106 projects above a downward continuation of the face 12 of the work plate 66 and is compressible in order to permit the heel to be forced against the edges 80, 82 of the work plate. Accordingly, the rubber block I 06 may be defined as constituting a salient portion of the cutting bed 24, or as being raised with relation to the general level of the face 12. Moreover, in view of the fact that the heel supp ortingfaces of the rigid support 26 and the rubber block I06 are arranged approximately in angular relation to each other, such faces may be said to form a reentrant cutting bed, or to form substantially an obtuse dihedral angle. I

When the heel has been breasted and the knife 56 starts upward, the rubber block I06 assumes its initial position and shape, causing a chip H0 (Fig. 'Iitrimmed from the heel to be deflected upwardly and to the left, with the result that'said heel lengthwise. on the means and past said edge of the said support to breast s'ureof the work piece operateduponj by the portion of the workpiece.

I block arranged adjacent to s T em material irqmit e, work and cutting Edge, m ans. 91?

ranged in, approximate algnen jacent portions of the work piece engaging s of;the rigid support.

su port -.1 39 9 my .i m 1. 1a.; lUI [was 1:: "21. so; a" ch p topple rearwardly over the breast gage 1d ioutqfthema h na. l M

. H avi ng described m invention, what 'l claim as newand desire to secure by Letters Patent ofthe United Statesisr,

, 1.. In a trimmin ma'hmmriufirearm auwork piece,.said support having an edge a b1 of resilient. material, constructed and arr be engaged by. a, portion ofthe work piece jectin'g. beyond said, edgev and-t0, jcause said W piece .upon the support. initially .to; bespacedfirom said edge; and. a recinrocable knife; movable past said edge;:.said,.block beingyieldable under to. permit .a portion of the W01 piece to be forced against and tensionedcrosswiseof said edge prep aratory to the severance ofmaterial from said i ,2. Ina trimming machine, ya work s upporting bed, said bed comprising; a, rigid ,support having an edge "and! a salient'tresilienl W S y s p rtin e a :59p

cable ,kniie, jmountedfor rooye operating he r i elt aus P9 1: n extendingbeyondthe ed ofthe 1g1 be .fbrced ,intothe block, t ere by .tions aof. thework to, be forced a s ne .crosswi e Said d e. p severance of said portionsv f t .3; ,In ,a. trimming ma-ch new faces forminga fi g .i

constructed andarnanged to e piece and'the other of said 5 r,f

of movement of th cut -vi e asiw r p er s1 btuse i edra subst ntially araa nroximattl ni s trantcutting bed, d race -6f having an edge. a knife having a cutting edge movable past said edge of the'rigid support. said faces .of the rig d and the resilient supports being constructed and arranged to be engaged initially by opposite ends respectively of a work piece with an intermediate portion of the work piece spaced from said edge, and means for actuating the knife to cause the resilient support to be compressed under the action of the work piece operated upon by the knife thereby permitting the work piece to be moved into engagement with said edge of the work support and tensioning portions of the work piece located adjacent to the edge crosswise of said edge preparatory to moving the knife past said edge completely to sever said portions of the work piece.

5. In a breasting machine, a rigid support constructed and arranged to be engaged by the attaching face of an unbreasted heel, said support block being constructed and arranged to be engaged by the forward end of the attaching face of the unbreasted heel and to cause the heel initiallytobe spaced from said edge of the support, said block being yieldable under pressure of the heel operated upon by the knife to permit an attaching face portion of the heel to be forced against and tensioned crosswise of said edge of the rigid support preparatory to the severance of said attaching face portion from the heel.

6. In a breasting machine, a rigid support for an unbreasted heel, an abutment constructed and arranged to be engaged by the forwardend of the heel to position said heel lengthwise on the support, a block of resilient material which is constructed and arranged to be engaged by the forward end of the attaching face of said heel, and a knife for breasting the heel, said block being constructed and arranged to be compressed during the heel breasting operation and after said operation to expand causing a chip trimmed from the heel to be ejected from the machine.

7. In a breasting machine, a rigid support for an unbreasted heel, said support having an edge, an abutment which is spaced from the support and is constructed and arranged to be engaged by the forward end of the heel to position the heel lengthwise on the support, a block of resilient material interposed between the abutment and the support and constructed to be engaged by the forward end of the attaching face of the heel, and a knife movable toward and past said edge of the rigid support to breast the heel, said block being compressed by the heel during the heel breasting operation and after said operation expanding to cause a chip trimmed from the heel to be ejected from the machine.

8. In a breasting machine, a knife having a cutting edge, means for reciprocating said knife, a rigid support having angularly disposed surfaces forming an edge, one of said surfaces being constructed and arranged to be engaged by the attaching face of an unbreasted heel and the other of said surfaces being in approximate alinement with the path of movement of the cutting edge of the knife, a breast gage constructed and arranged to be engaged by the forward end of said heel to position the heel lengthwise on the support, and a rubber block which is clamped between the breast gage and said other surface of the support and is constructed and arranged to be engaged by the forward end of the attaching face of the heel, said block being raised with relation to the general level of the heel engaging surface of the rigid support and being compressed to permit a portion of the heel to be forced against and tensioned crosswise of the edge of said rigid support preparatory to the severance of said portion of the heel.

9. Ina breasting' machine, a cutting bed comprising an inclined rigid portion the front lower end of which'terminates in an edge and a resilientfstep portion extending forward from said edge, said cutting bed being constructed and arranged initially to support a work piece with a portion thereof spaced from said edge, and a reciprocatory knife having a cutting edge movable toward and past sai edge against the resilient step portion of the'cutting bed, said resilient step portion of the cutting bed being compressed under the action of the workpiece operated upon by the knife to permit the work piece to be moved into engagement with said edge of the rigid support of the cutting bed and to cause fibers of the work piece adjacent to said edge to be tensioned crosswise of said edge preparatory to moving the knife past said edge completely to sever material from the work piece.

10. In a breasting machine, a cutting bed for supporting an unbreasted heel, said cutting bed f comprising an inclined rigid'portion the lower end of which terminates in an edge and a resilient step portion extending approximately horizontally from said' edge, said inclined and step portions of the cutting bed being constructed and arranged tobe engaged initially by the rear and front portions respectively of the attaching face of the heel, intermediate portions of the heel being spaced from said edge of the rigid portion of the cutting bed, a reciprocatory knife movable toward and past said edge, and means for operating the knife to cause the heel under the action of the knife to compress the resilient step portion of the support thereby permitting the heel to be moved against said edge and causing fibers of the heel positioned adjacent to and extending across said edge to be tensioned preparatory to 'moving the knife past said edge to sever material from the heel.

, FRED P. TAYLOR.

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