US2559813A - Welt cutting device - Google Patents

Description

July 10, 1951 A, F, nE $559,813

WELT CUTTING oEvicg:

Filed June 16, 1950 3 sheets sneet '1 July 10, 1951 A. WHITE WELT CUTTING DEVICE Filed June 16, 1950 y 1951 A. F. WHITE 2,559,813

WELT CUTTING DEVICE Filed June 16, 1950 Sheets-$113M 3 --a "lasted shoe. ..compl;ished, in accordance with'this'invention, in

Patented July 10, 1951 WELT GUTTING DEYIGE Aubrey, F. White, Northsweymouth, Mass. Application June 16, 1950,-Seri-al N0. 168;45-1

4 Claims.

two stages, the first partly :severingan edgepor- =tion'of5the strip inwardly from thefieshvface, andthe second forming a generally V-shaped cut whieh producesaeore portion and an attached layergt-within which the core portion :may be -wra'pi ldywhile the partly severed edge portion which-{is integral with .the core portion provides a furtherlayer which may overlie the base strip -gaged by the inseamstitching in the manufactureof the shoe and thus hold the welt in its *folded condition with the integral bead on its grain fa-ce.

For-a complete understanding of this invention,

"reference-may be had to the accompanying drawingsinwhich *Figure 1 isa-rear elevation of a welt cutting.

maehine'embodying the invention.

.fFigure-2 is a fragmentary front elevation of the same.

pletedbeaded-welt.

Referring first to Figures 1,2, and 3, the machine "comprises 13, suitable support I shown as provided with spaced legs '2, this support being "provided witha pair of spaced upstanding walls {provided with lower and upper pairs of spaced bosses-4 and'5. The bosses 4 are tubular and have journaled-ithereinia:shaitFB provi at n sendoutwardly -0f- .0ne of. the wall members .3, with a lower feed roll "I. 'Betweenrthesbosses 4, the shaft 6 hassecured thereto a gear 18. With this gear 8 meshes a long gear' 9 carried by a jack shaitsatn suitably supported .in spacedears ll. *Also acooperatinguwith .the long gear 9 is a gear llon a drive shaft L3,..thi-s drive shaft l3 being rJournaled-in alined apertures in the bosses 5. -Atone end, this drive shaft I 3 carries .means,

-' such-as a beltpulley M, by which the driveshaft may: be'rotated-as by means of a belt I 5 passed 2 about thedrive wheel I4 and leading to arm-snitahie rotating means. Rotationof the drive shaft 'thns..-drives.theg.ear .9, the shaft 6, andthe lower z-feedro ll :1.

Ajfi'ame t4 isrockably mounted onthe drive shaft 1:3 and this frame 11-4 has J'oumaledtheliein a==feed shaft [:5 which carries a knurledotothe wise roughened feed roll l6, which, "when time :frame. I14 ,in :the. angular position shown in 1111 :lines ;in Figure; 3, positioned above and in 1c0- operative relation to .the lower feed-roll Th .ieedshaft t5 .carries ;a gear H whi h meshes .with 'the.:drive.shaf;t gear .12. Them! ihe ee these feed rolls 1 and It, When the frame 115 in .itszlowered-position, adjacent to one; edge ;of a table 3210 :carried .1 by tithe suppor I. Thie =tab1 :has positioned {thereon :a pair of spaced guide on thef'insideof the rib and Which-may be en- -j;0

'IIIEQHbGIS-T2Lfi1ld322 which may be se u ed-r e th stable :top by screwendpslot means 23 w ich per- ;m-its'zth e:5pacing between th s uid atoe 1 d- .jnstediin accordance t :Widt hfiQf th We .strip which is to (be out. :One gof these guides, as '121, is provided with a hold-down 524 which projectsacross the spacebetween the guides-and mayoverlap thegnideZZ.

second: hold-down strip.2'5 maybe a'dl'il jably fixed ,to the. guide 2'! to extend .towartd v,alinegr;ent with'theainner faceof the guide 322 ;.t0'.the.,. tent desired. ."Opp'osite :to ,the free :end -of i this "hold-down strip .25 maybe positioned a knife +36, --.whioh,:as shown best v-inrFigure 5,. is provided with adownwardly sloping cuttingedge ;-3| arrangedi-in Him with the feed; direction of -the welt =strip, this cutting-edge being positioned to .cut -partlythrough the welt strip .375 fromits topgor -iieslr'face .adjacent to one edge :as shown best; in F-igurez-fi. This forms aout ,36 in the..-fiesh,faee :of the welt-strip and partlysevers therefrom ,a relatively :thin layer'3'l. This knife ;3.0,.i's clamped #to .a holding block 38, Lwhich'ha-s a ,vertical.,:gr cove to receive the. knife as :shown in Figure 5. block 38 may be secured as by screw .and-slot'con- .nectionsii39 with the topiace'of the table. It :awi-ll beinote'd thatithis knife is in advanceiof the r-feed ro'lls land [6. Adjacent to "the oppositeedge portiongoftthe table :where the I welt strip leave this .table and :close touthe ynipbetwe en the feed rolls, there is positioned the cutting edge 40 of a secondor slitting kniie .4! shown detached inFigure 8. :The cutting :edge ofthis knife is of Vorangular icontonr having a substantially straight portion "dzwhichis substantially parallel to the top face of the table, and the angularly relatedportionfl is upwardly inclined and intersects the top or flesh faceofthe welt strip presented thereto as shown in "F igurefl. The cut 36 made by the first knife13BjiS therefore positionedspaced from the apex of the V of-the knife-4 l "It. is. importantsthat. the.,;.knife.- 4| :be accurately positioned vertically so as to provide a layer 45 beneath the horizontal cut 46 of the proper thickness. To this end, the knife 41 is secured to the top face of a block 59 and is adjustable lengthwise thereon by screw and slot connection at backed 'up by a screw 52 extending through a shoulder 53 along one edge of the block.

The block 50 is slidably guided vertically within a way in the supporting standard 551 which carries the table 2% and its height is adjusted micrometrically by turning an adjusting screw 56 threaded through the support I and bearing against the under face of the block 50. This screw 55 is provided with a knurled head 59 at its lower end by which it may be turned and a circular flange portion 50 thereof suitably graduated may have cooperating therewith an indicating finger B! which will facilitate positioning of the adjusting screw 53 in any predetermined position. The slide block 50 maybe held against the upper end of the adjusting screw as by means of a-coil spring 65 seated in a socket 68 therein and secured at opposite ends to a loop 61 in the block and an eye 68 secured to the support I. A locking screw threaded into the block 59 and passing through a slot H in the part 55 and having a clamp collar 12 thereon may be employed to lock the block 50 in any desired adjusted position.

' Thewelt strip to be cut may be inserted beneath the shaft l3 while the frame 14 is tilted upwardly into the dotted line position shown in Figure 3 and pushed forward until it reaches the edge of the knife 4|. When the welt is in this position the frame l4 may be brought down into the full line position shown in Figure 3 and there held by a tie rod '15 hinged at 16 to a lug on the frame [4 and having a thumb nut Ti threaded on its lower end which may be brought beneath a slotted lug 18 secured to the support I and then tightened ftothe desired degree to cause the feed rolls to exert the desired pressure on the welt strip. On

causing the feed rolls to rotate in the directions shown by the arrows in Figure 3, the welt strip may then be pulled along and the cuts formed as shown in Figures 6, 7 and 9. These cuts define a thin layer portion 46 and a core strip portion 89, one side edge of which is partly cut to form the layer 31. The parts are then wrapped and cemented into the positions shown in Figure 10,'the strip portion 85 being partly enclosed within the layer 46 and the layer 3'! being turned outwardly to overlie the body portion of the strip to form the completed welt. As before noted, the stitch groove 8| of the welt strip is formed before the strip is presented to the machine of this invention.

When the welt is thus formed up and cemented together, it will be noted that the layer 31 forms a portion integral with the bead on the welt and which is penetrated by the stitching when the welt is incorporated in a shoe so that the cement -is not relied upon to maintain the bead in its spirit or scope.

I claim: 1-.-A welt cutting machine comprising a table,

guides on said table spaced to permit a-welt strip to be passed therebetween, upper and lower feed rolls positioned to engage the'upper and lower faces of the strip at one edge of said table, a

welt slitting knife positioned adjacent to the nip between said rolls and against the cutting edgeof which said strip may be fed by rotation of said rolls, said knife having a cutting edge of V shape with one side substantially parallel to the top face of said table, and the other side extending upwardly, and a knife having a lower cutting edge inclined downwardly lengthwise in the direction of feed and positioned to out part way through said strip along one edge and at one side of said V out.

2. A welt cutting machine comprising a table, guides on said table spaced to permit a welt strip to be passed therebetween, upper and lower feed rolls positioned to engage the upper and lower faces of the strip at one edge of said table, a welt slitting knife positioned adjacent to the nip between said rolls and against the cutting edge-of which said strip may be fed by rotation of said rolls, said knife having a cutting edge of V shape with one side substantially parallel to the top:f,a"ce of said table, and the other side extending upwardly, and a knife having a lower cutting edge inclined downwardly lengthwise in the direction of feed and positioned to out part way through said strip along one edge and spaced laterally from the apex of said V.

3. A welt cutting machine comprising a table, guides on said table spaced to permit a weltstrlp to be passed therebetween, upper and lower feed rolls positioned to engage the upper and lower faces of the strip at one edge of said table, a welt slitting kniie positioned adjacent to the nip between said rolls and against the cutting edge of which said strip may be fed by rotation of said rolls, said knife having a cutting edge of'V shape with one side substantially parallel to the top face of said table, and the other side extending upwardly, and a knife having a lower cutting edge inclined downwardly lengthwise in the direction of feed and positioned to out part way through said strip along one edge and at one side of said V cut, said last mentioned knife being positioned to cut in advance of said slitting knife.

4. A welt cutting machine comprising a table, guides on said table spaced to permit a welt strip to be passed therebetween, upper and lower feed rolls positioned to engage the upper and lower faces of the strip at one edge of said table, awelt slitting knife positioned adjacent to the nip. oetween said rolls and against the cutting edge of which said strip may be fed by rotation of said rolls, said knife having a cutting edge of :V shape with one side substantially parallel to the top face of said table, and the other side extending upwardly, and a knife having a lower cutting edge inclined downwardly lengthwise in the direction of feed and positioned to out part way through said strip along one edge and spaced laterally from the apex of said V, said last mentioned knife being positioned to cut in advance of said slitting knife.

AUBREY F. WHITE.

REFERENCES CITED The following references are of record in the file of this patent: .1.

UNITED STATES PATENTS.

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