US2363004A - Shoe machine - Google Patents

Description

.Nov. 21, 1944. B. JORGEINSEN SHOE MACHINE Filed Jan. 25, 1943 3 Sheets-Sheet 2 Nov. 21, 1944.

' Figs.

B. JORGENSEN SHOE MACHINE Filed Jan. 25, 1945 w Q). a I I I. 8 6 /64 I6 I; u

3 Sheets-Sheet 3 ordination between the movement of the middle trimmer and the release of the upper by the gripper associated therewith as between the movements of the side trimmers'and the release of the upper by the corresponding grippers. Accordingly, the margin of the upper is maintained under as effective control at the end of the toe as at the sides of the toe for the upper-trimming operation.

The above and other features of the invention, including various novel details of construction and combinations of parts, will now be more particularly described with reference to the accompanying drawings and thereafter pointed out in the claims.

In the drawings,

Fig. 1 is a view partly in left-hand side elevation and partly in section of the upper portion of a machine constructed generally as disclosed in the previously mentioned Letters Patent but modified for purposes of this invention;

Fig. 2 is mainly a plan view on a larger scale of a portion of the structure shown in Fig. 1, with the parts in the positions which they occupy at the beginning of the upper-trimming operation;

Fig. 3 is a view in elevation from the right-hand side of the machine of the right-hand side trimmer, with portions of the structure broken away;

Fig. 4 shows a portion of the structure shown in Fig. 3, as viewed from the left-hand side of Fig. 3;

Fig. 5 is mainly a sectional View illustrating the relation to the shoe of the left-hand side trimmer and of parts associated therewith at the same time in the operation of the machine as in Fig. 2;

Fig. 6 is a sectional view illustrating the relation to the shoe of the middle trimmer and of parts associated therewith as it performs its upper-trimming operation after the operation of the side trimmers; and

Fig. 7 is a view similar to Fig. 6, showing the parts as they appear immediately after the completion of the upper-trimming operation.

In view of the disclosure in the above-meme tioned Letters Patent, only as much of the machine as it is necessary to refer to for an'understanding of the present invention will be herein described. The machine is provided as heretofore with a member 2 arranged to engage the bottom of the toe end of the insole to determine the position of the shoe heightwise in the machine,

when the operator presents it bottom upward for .the operation of the machine thereon, and assogrips the upper at the end of the toe and side; grippers III which grip it at the sides of the toe.

These grippers are closed on the upper and are operated to pull it respectively lengthwise and widthwise of the shoe as more particularly hereinafter described. While the grippers are thus pulling the upper its toe-end portion is wiped heightwise of the last and is conformed to thecontour of the last by upward movement of a. substantially U-shaped flexible toe former i2 carried by a support l4 to'which upward movement one of which is shown in Fig. 1. Features of the mechanism shown for operating the support I 4 and for controlling the toe former are claimed in Letters Patent No. 2,354,685, granted on August 1, 1944, on an application of mine. Also carried by the support M are wipers I8 located in a. plane immediately above the toe former and arranged to support the margin of the upper in outspread relation to the edge of the last bottom for the upper-trimming'operation after the wipers and the toe former have received their upward movement. For thus trimming the margin of the upper there are provided a middle trimmer 20 movable outwardly lengthwise of the shoe and side trimmers 22 movable outwardly widthwise of the shoe from positions opposite the bottom of the shoe to sever from the upper materials the margin of all but the outer layer of the materials, leaving the margin of the outer layer to be thereafter wiped inwardly over the insole by the wipers i8 into position to be secured to the insole by cement applied to the shoe by means not herein shown. In time relation to the outward movements of the trimmers the grippers are caused to release the upper and are moved farther outwardly to avoid interference with the trimmers.

The several trimmers are supported on a carrier 24 by downward movement of which they are carried into positions to operate on the shoe and by upward movement of which they are thereafter carried away from the shoe. The middle trimmer 20 comprises a knife 26 having a cutting edge 21 (Fig. 2) curved in general similarity to the curvature of the edge of the insole around r the end of the toe, and the side trimmers 22 comprise knives 28 having cutting edges 29 (Figs. 3 and 4) which in the construction shown are straight lengthwise of the shoe. The several knives, in operating on the upper, move in a, plane parallel to the top faces of the wipers l8 with their cutting edges spaced from these faces a distance substantially equal to the thickness of the outer layer of the upper materials, so that they cut through the inner layer or layers of the upper materials on a line generally parallel t the edge of the last bottom while leaving the margin of the outer layer intact to be lasted inwardlyover the insole. It will be understood that the toe end of'the upper materials will usually comprise at least three layers, including a lining and a toe box in addition to the outer layer.

Each side knife 28 is secured to a knife holder 30, and as fully disclosed in Letters Patent No. 2,324,509, the two holders 3!] are moved on the carrier 24 along guideways curved about a vertical axis located opposite the end of the toe of the shoe to impart operative trimming movements to the side knives. As also fully disclosed therein, such movements are imparted to the knife holders 30 by a slide 32 (Fig. 1) movable in ,directions lengthwise of the shoe along guideways on the 'carrier 24. The slide is moved in a rearward direction, 1. e., toward the left in Fig; 1, thus to operate the side knives by a fluid-operated piston 34 movable upwardly in a cylinder 36 and connected by a link 38 to one arm of a threearmed lever 49 mounted on a pin 42 on the carrier 24, another arm of this lever being connected by a link 44 to a pin 46 on the slide'tli. Pivotally mounted on this pin to swing in directions heightwise of the shoe is anarin 48 which carries the middle knife 26. The arm is held initially upraised by a spring 58] connected to it and to the slide 32, the limit of its upward swinging movement being determined by engagement of a 1 ancaool lug 52 on itsreariend'with thetop of the slide. ,iIt will be evident that thearm 4.8 is .carriedrear- "wardly by the slide 32, but it remains \upraised wuntilthe side knives have been swung substantial distances away fromieach other in their 10p" 'erative trimming movements.

The arm is :then 'swung downwardly to carry the cutting edge of the knife 26 to the same plane as the cutting wedges of the side knives, and'by turther movement of the slide .32 thereafter the knife 26 is moved rectilinearly tocom-plete the upper-trimming operation begun bythe side knives in their.

earlier action on the upper at the sides of the too. The arm 48 is swung downwardly'as above -described by a lever i54 pivotallymountedon a -pin56 on the carrier 24-and having thereon a roll 58 arranged to engage an inclined face 60 on-the arm. Operative movement is imparted to the to receive the margin 10f the upper- The lower jaw 84 is iiast on :a slide 8.8wmovable .in directions lengthwise of the shoe along guide-ways on the ls'uppor.t 32, and the upper jaw :86 is mounted Hona pin 90 on the l'owerjaw for swinging movements toward .and fromthe latter. An upwardly extending arm 92 .on the jaw T86 is connected by means hereinafter described to apiston 94 movablein a cylinder 96 :fast on the slide 180. The

-j-aw 86 is held -:initiallyin openposition by springs 98connected theretolas hereinafter described, the

lever 54 by a roll 2 carried by one arm of .the

three-armed lever 40, and arranged to engage a cam face '64 on the lever 54, all-as morefully disclosed in Letters Patent No. 2,324,509.

' Fortheaccomplishmentof one of :the objects of this invention, there is associated .withieach of the side-trimming knives 28 asubstantially ver tical knife B6 (Figs. 3 and 4) havinga cutting edge -68 inclined heightwise and'widthwiseo'f the shoe. The knife 60 is secured to a plate "I0 pivotally mounted on a pin 12 which is supported by the 'upper'end of a plate :14 fast on that side of the knifeholder 30 which faces towardthe heel end of theshoe. A screw '16 threaded in the holder =30 and extending through a slot 1-8 inthe plate J 4 holds the plate in fixed relation to the holder while permitting it to be adjusted in directions 1- 'heightwise of the shoe to position the knife-66 in exactly the right relation to the knife :28. -A-leaf spring 80 secured to the plate 10 and bearing at. its upper end on the holder 30 holds the knife '-=66 ag'ainst thegside of the knife Z'B-and is yield able topermit :releaseof any shred of upper materialthat may become wedged between the two knives. The relation -of the two knivestfi to the side-trimmingknives 28 is such that as the latter move outwardly to perform the upper-trim -ming operation the knives :66 sever frorn'the rest of the upper materialsthe opposite ends of the strip of waste material produced by the action of'the side knives 28 and the middle knife 26in cutting the inner layer or layers of the upper materials on a line parallel tothe edge of the last bottom. The knives '66 act only on the layer or layers which are acted upon by the knives "-2 6 and 2B,: and accordingly leave' the outer layer of the upper materials without any slits therein at "the sides of the toe. Not only, therefore, is the necessity avoided of slitting the several "layers at "the sides of the toe before presenting the shoe to the machine. as'has been the practice heretofo'rein the use of a machine suchas shown in.

Letters Patent No; 23245509, but danger also is avoided of possible" damage to the shoe in case "suchslits in the outer layer should'extend too far I inwardly from the edge-of the upper.

The grippers 8 and I0 and their operating piston 94 being then hear the inner end of the cylinder 96. The piston is operated to cause the jaws to grip the upper by fluid admitted to the cylinder -9-Bfrom a pipe I00 connectedto a flexible supply tube (not shown).

Each .of the side grippers 10 is generally similar inconstructionto the end gripper 8 and comprises alower :jaw 1,02 (Fig 5) and an upper jaw i104 .pivotally mounted'at I06 ion the lower jaw. The lower jaw of each :side gripper is secured to aslide :I08 movableiindirections widthwise of the shoealongguidewaysionthe support 82. An upwardly extending arm II:0'.of the upper jaw of 7 each side gripper is .gconnectedby means hereinafter described to .a piston I- I2 operating in a cylinder .=I.I4=fast on the slide I08, the upper jaw being held normally in .open position by springs H6 ('Fig. 2) connected thereto as hereinafter described. The-closing ofieachsidegripper on the upper results from the admission of 'fluid'to the cylinder M4 "througha flexible tube I20 leading from the sourcerof'fluid supply. Asdisclosed in Letters Patent No.:2,324,509, by control of a valve .(not herein shown) :fluid is admitted to all three cylinders to close all the grippers simultaneously on the upper prior to the starting of the automaticcycle of operations of the machine.

The pulling of the upper by the several gripper-sis effected'by movements of the slides 88 and :I 08. outwardly along their guideways on the sup- \port :82 .indirections substantially parallel to the :bottom of the-toe end of the last. For imparting turn .theslide and the gripper to starting position. The.operativemovementofthe lever I22-is effected by bodily movement of a cylinder I32 whichfis pivotally connected-to the lever and into which operating fluid .is delivered through a flexibletube I34 leading from the source. of supmechanisms are constructed forthe most part" substantially as disclosed in Letters' Patent No.

2,324,509 and. will be herein briefly=described.

The grippers are mounted on a substantially horizontal gripper support '82 which is pivotally' mounted at its rear end on the frame for adjustingmovements in directions heightwise ,of the shoe; The end gripperfl comprises a pair of jaws s gns tie-( igs. e and 7') arrangedzto p n V a substantially horizontal opening between them zply. Operative-movement of the lever I22 is limited by a. stop I36.on the support 82.

The lflllid. admitted to the cylinder I32 serves also to impart upper-pulling movement to the left-hand side gripper 4 0. For this purpose there is movably mounted in the cylinder a piston I38 pivotally connected to one arm of a lever I40 mounted to swingabout a stud I42 on the support ;8 2. Also mounted to swing about this stud zis az-forwardly extending lever I44 connected at its front end to the slide I08 carrying the left-.

hand side gripper. A spring I46 connected to the front end portion of the lever I44 and to iethe left-lhandiarm of the lever I40 serves to hold the latter initially in engagement with a stop lug 148 on the lever :I 44, at which time the piston 138; is 'vnearwtheinner end of :thecylinder 132.

Outward movement of the piston when fluid is admitted to the cylinder serves'to swing the lever I40 and the lever I44 as a unit about the stud I42 to impart upper-pulling movement to the left-hand side gripper, the spring I46 yielding.

more or less in response to resistance of the upper-to the force of the pull applied thereto and the lever I40 accordingly moving more or less away from the stop lug I48, as illustrated in Fig. 2. Movement of the piston I38 is limited by a stop lug I50 on the support 82. Eventually the left-hand side gripper is returned to its starting position by a spring I52 connected to the right-hand arm of the lever I40.

The mechanism for imparting upper-pulling movement to the right-hand side gripper I is of substantially the same construction as that above described as associated'with the left-hand side gripper, and corresponding parts are identified by the same reference characters. The lever I40 through which the right-hand gripper is operated is pivotally connected to a piston I54 movably mounted in a cylinder I56 which is pivoted on a stud I58 on the support 82, movement of the piston being limited by a stop lug I60. Fluid is admitted to this cylinder through a pipe I62.

As disclosed in Letters Patent No. 2,324,509, fluid is admitted simultaneously to both the cylinders I32 and I56 through an automatically controlled valve (not herein shown) to cause the several grippers to pull the upper.

As hereinbefore explained, release of the margin of the upper by all the grippers has taken place heretofore substantially at the time when the side-trimming knives 28 begin their trimming action on the upper,.such release of the upper resulting from release of the operating fluid from the cylinders 96 and I I4 bymovement of the controlling valve to exhaust position, To afford still better insurance of the proper coordination between the release of the upper by the side grippers and the movements of the trimmers associated therewith, and to permit the end gripper still to control the upper after it has been released by the side grippers and until the middle trimming knife begins its trimming action on the upper, the construction herein shown is such that the release of the upper by each of the several grippers is effected in response to the operative movement of the trimmer associated therewith. For the purpose in view, the piston 94 of the end gripper has pivotally connected thereto a forwardly extending link I64 provided in its front end portion with a slot I66 (Fig. 6) in which a pin I61 carried by the upwardly extending arm 92 of the gripper jaw 86 normally lies, as shown in Fig. l. The previousl mentioned jaw-opening springs 98, which are connected to a pin I68 in the link I64, tend to swing the link upwardly and accordingly hold it normally in a position 1 in which the pin I61 is at the lower end of the slot I66. An upwardly extending portion of the front end of the link is provided with an'inclined face I arranged to be engaged by a roll I12 mounted on a bracket I14 which is supported on the arm 48 carrying the middle trimming knife 26. In response, therefore, to the operative movement of the middle trimmer lengthwise of the shoe the link I64 is swung downwardly against the resistance of the springs 98 by the action of the roll I12 thereon. In Fig. 6 the parts are shown in the positions which they occupy substantially at the time when the middle trimming knife begins its trimming action on the upper, the link .I 64 having been swung nearly far.

enough to release the pin I61 from the slot I66. Immediately thereafter such release of the pin takes place, thus releasingthe pressure of the jaw 86 on the upper and permitting the end gripper to be moved farther outwardly by the action of the spring I26 thereon to avoid interference with the trimmer as the latter moves farther outwardly over the wipers in the manner illustrated in Fig. 7. At this time the pressure of the operating fluid is still maintained in the cylinder 96, outward movement of the piston 94 in the cylinder being limited by its engagement with a pin I16 in the cylinder, The bracket I14, which is U-shaped to provide portions at both sides of the arm 48, is mounted on a pin I18 on the arm and is further held in fixed relation thereto by a bolt I80.

Similarly the piston II 2 of each of the side grippers has pivotally connected thereto a link I82 provided with a slot I84 arranged to receive a pin I85 carried by the upwardly extending arm I I0 of thejaw I04, the link being urged upwardly by the previously. mentioned jaw-opening springs II6 connected to a pin I86 in the link and being provided with an inclined face I88 arranged to be engaged by a roll I90 on the corresponding side knife holder 30. The roll is mounted on a pin I92 adjustable along an inclined slot I94 in the holder 30 to permit the roll to be adjusted in exactly the right relation to the link I82. The pin is held in adjusted position by a nut I96 (Fig. 3) threaded thereon and cooperating with a flange I98 formed on the pin to clamp the pin on the knife holder, It will thus be seen that the two side grippers I0 are caused to release the upper in response to the movements of the side trimmers substantially at the time when the latter begin their trimming action on the upper, by reason of downward swinging movements of the links I82 far enough to release the pins I85 from the slots I84, whereupon the side grippers are moved farther outwardly by the springs I46 to prevent interference between them. and the side trimmers. Outward movements of the pistons H2 in the cylinders 'II4 when the grippers thus release the upper are limited by pins 200 in the cylinders.

The manner of operation of the machine, in so far as it is of interest with reference to the present invention, will now be briefly summarized. Ordinarily the shoe will have been side lasted before it comes to the machine, and before presenting it in position to be operated upon the operator spreads the margin of the toe-end portion of the multi-ply upper outwardly from the edge of the last bottom so that it will readily enter the open jaws of the end and side grippers 8 and I0. He then presents it bottom upward with the toe end of the insole against the member 2 and with the pins 4 extending into the holes provided for them in the bottom of the last, and thereafter causes the several grippers to close on the margin of the upper by admitting operating fluid to the cylinders 96 and H4. If the upper is properly gripped, the operator then starts the cycle of power operations of the machine. Substantially at the beginning of the cycle the toe rest 6 is moved upwardly to clamp the the links [fi l-and I82 which are swung upwardly fuppei heightwise of the last-and to raise the wipers I8 to positions slightly higher than the edge of the insole, where they serve as supports for the outspread margin of-the upper held by the grippers. Inproper time relation to'the upward movement ofthe toe former and the wipers the carrier 24 is moved downwardly to carrythe upper-trimming means into proper relation to the shoe, and the trimming means is then operated to trim from the outspread margin of. the toe end of the upper all but the outer layerof the upper materials. In' the upper-trimming operation the two side trimmers 22 are swung outwardly and act on the upper prior to the middle trimmer 20, Figs. 2 and showing'the partsas they appear as the side-trimming knives 28are beginning to trim the upper on a line generally parallel to the edge of the last-bottom. At this time thetroll's "I90 carried by the side trimmers have engaged the inner end portions offthe links I82 and have swung the links downward nearly far enough to release the pins I85 bythe action of ,the springs thereon.

Having described the invention, what I claim as new and desire to secure by Letters Patent 5 of the United States is:

fromthe slots in the links. Immediatelythereafter; as the side trimmers continue their outward movements, the pins are released from the slots, thus causing the side gripper jaws to release the upper, whereupon the side grippers are moved farther outwardly away from the shoe by the action of the tensioned springs I IGtoprevent interference of these grippers with the side trimmers during further outward movements of the latter. The pressure of the operating fluid,

' however, is still maintained in the cylinders I I4,

outward movements .of the pistons II 2. in the cylinders being limited by the pins 209. In the course of the outward movements of the side trimmers the knives 66 slit the margin of all but the outer layer of the upperv materials transversely of'the' edge of the shoe bottom and thereby sever from the rest of the upper materials the strip of waste material'produced by the action of the side trimmers and the middle trimmer.

Immediately after the action of the side trimrners on the upper, the middle trimmer 20, which has been swung downwardly to carry its knife 26 to the same plane as the side knives 28, acts on the portion of the upper around the end of the'toe in the same manner as the'side knives 28, thus completing the upper-trimming operation. As the middle trimmer isthus operated, its roll I12 serves to impart" downward swinging movement to the link I64 and thereby'to release the pin I61 from the slot I66 in the link to cause the end gripper 8 to releasethe upper. Such'release of the upper takes place near the beginning' o'f the upper-trimming operation of the middle knife, just after the parts are positioned as illustrated in Fig. 6. Thereupon the end gripper is moved farther outwardly by the spring I26. to avoid interference with the middle trimmer, out- 1 cylinders by the springs 98 and I16, respectively. I As the pistons are thus returnedthe pins; I61 and I85 again enter the-slots I I56 and 184; in

1. In a shoe machine, upper-trimming-means portion of saidtrimining means being arranged to cut" the; materials on a line generally parallel; to thee'dge' of thelastbottom andan'other porew;

tion" thereof having cutting edgeszarranged to ex-n tend transversely of the edge of the last -bottom-,; and: to. act only on said inner layer or,laye'rs .to 1

sever from the body of the materials :the ends of the strip produced by' said first-named portion. 2: Ina shoe machine; upper-trimming means movable outwardly'fromo'pposite thebotto'm of a' lastto trim :from .thetoe endof a multi-zply upper 'onthe last thema'r-gin ofone or more inner layrsbfthe upper materials while leaving a margin-"ohthe' outerlayer to be lasted inwardly over an insol on the last; saidupper-trimming means" having cutting? edges arranged to extend respectivelyin generally parallel relation :to the bottom-of the toe end of thelast and, heightwise of the last and-to actonly on said inner layer or layers? to sever completely therefrom a strip extending around the toe end ofthe last.

3. In a shoe machine, upper-trimming: means movable to trim from the toe end of a multi ply upper"on-,a;last"the margin done or more inner layers" of the upper .materials while leaving a: margin" of the outer-layer to' be lasted inwardly over an; insole on; the last, said upper-trimmingmeanscomprisinga plurality of trimmers 'mov-i able respectively in different: directions outwardly from positions oppositethebottom of the last'to perform thetrimming operation, allsaid trim-* mershavin'g 'cuttin'g edges arranged to-cut'th'e materials on a" line generally parallel to the edge of thelastgbottom and two of them havingzalso cutting edges arrangedto sever from the body of thematerials-the ends of, the; strip produced by;

said'first-named cuttingedges.

4;;In a shoei-machine;- upper trimming ;means movable to trim fromgthe'toeend of a multi-ply'.

means comprising a middle trimmer movable lengthwise of the last andside trimmers movable widthwise of thelast, all said; trimmers having cutting edges arranged to cut the materials'on a linegenerally parallel to the edge of thelast b'ottom andthe side trimmers having also cutting edges arranged to extend transversely of the I edge of thelast bottom to sever from the body upper on alast in'outspreadrelation-to the edge of the last bottom, and upper-trimmin means movable outwardly from opposite the bottom of the-last to trim from said outspread margin by a cut generally parallel to the edge ,of the last; bottom one or more inner layers of the'upper.;=

materials while leaving a marginof the -*outer layer to be lasted inwardly. over an insole on the last, said trimming means having cutting edges arranged to extend transversely of the edge of the last bottom and to act only on said inner layer or layers to sever from the body of the materials the ends of the strip resulting from sai parallel cut. I v

6. In a shoemachine, means for positioning the margin of the toe-end portion of a multiply upper on a last in outspread relation to the edge of the last bottom, and upper-trimming means comprising a middle trimmer movable outwardly lengthwise of the last and side trimmers movable outwardly widthwise' of the last to trim from said outspread margin by a cut generally parallel to the edge of the last bottom one or more inner layers of the upper materials while leaving a margin of the outer layer to be lasted inwardly over an insole on the last, the side trimmers being provided with cutting edges arranged to extend heightwise of the last to sever from the sitions opposite the bottom of the last to trim said margin on a'line generally parallel to the edge of the lastbottom and additional knives trim surplus material from the margin of a multi-ply upper on a last prior to the lasting of the margin of the upper inwardly over an insole on the last, a pair of upper-gripping jaws for gripping the margin of the upper and for applying a pull to the upper prior to the upper-trimming operation, and,a member connected to one of said jaws for holding it closed on the upper, said member being movable by the trimmer to disconnect it from that jaw and thereby to cause the jaws to release the upper in time relation to the operative movement of the trimmer.

12. In a shoe machine, a trimmer movable to trim surplus material from the margin of a multi-ply upper on a last prior to the lasting of the margin of the upper inwardly over an insole on the last, a pair of upper-gripping jaws for gripping. the margin of the upper and for applying a pull to the upper prior to the upper-trimmovable with said first-named knives to Slit the plus material from said outspread margin of the upper, said trimming means including knives movable outwardly widthwise of the last from positions opposite the bottom'of the last to trim said margin on a line generally parallel to the edge of the last bottom and additional knives movablewith said first-named knives to slit the margin of the upper transversely of the edge of the last bottom, and meansfor yieldingly' holding said additional knives against the portions of said first-named knives which are farthest from the extreme toe and of the last.

9. In a shoe machine, upper-trimming means movable to trim surplus material from the margin of a multi-ply upper on a last prior to the lasting of the margin of the upper inwardly over an insole'on the last, and upper-gripping means for gripping the margin of the upper and for applying a pull to the upper prior to the uppertrimming operation, said upper-grippingmeans comprising parts relatively movable to release the upper in response to the operative movement of the upper-trimming means.

10. In a shoe machine, a trimmer movable to trim surplus material from the margin of a multi-ply upper on a last prior to the lasting of the margin of the'upper inwardly over an insole on the last, and a gripper for gripping the margin of the upper and for applying a pull to the upper prior to the upper-trimming operation,

said gripper comprising a pair of upper-gripping ming operation, a jaw-closing member for holding one of said jaws in gripping relation to the upper, and a connection between that jaw and said jaw-closing member, said trimmer having thereon means arranged to act on said connection to cause the jaws to release the upper in time relation to the operative movement of the trimmer. I

13. In a shoe machine, a trimmer movable to trim surplus material from the margin of a multi-ply upper on a last prior to the lasting of the margin of the upper inwardly over an insole -on the last, a pair of upper-gripping jaws for gripping the margin of the upper and for applying a pull to the upper prior to the upper-trimming operation, a fluid-operated member associated with one of said jaws for holding it in gripping relation to the upper, and a link connecting that jaw to-said member, said trimmer having thereon means for moving said link to disconnect that jaw from said member and thereby to cause the jaws to release the upper in time relation to the operative movement of the trimmer. v

14. In a shoe machine, means for supporting the margin of a multi-ply upper on a last in outspread relation to the edge of the last bottom, upper-trimming means movable outwardly from opposite the bottom of the last to trim from said outspread margin one or more inner layers of the upper materials while leaving a margin of the outer layer to be lasted inwardly over an insole on the last, and upper-gripping means for gripping the margin of the upper and for pulling it outwardly over said supporting means preparatory to the upper-trimming operation, said upper-gripping means comprising parts relatively movable to release the upper in response to the operative movement of the upper-trimming means,

15. In a shoe machine, upper-trimming means movable outwardly from opposite the bottom of a last to trim surplus material from the margin of the toe-end portion of a .multi-ply upper on the last prior to the lasting of the margin of the upper inwardly over an insole on the last, and upper-gripping means for gripping the margin of the. toe end of the upper and for applying a pull to the upper prior to the upper-trimming operation, said upper-gripping means comprising parts relatively movable to release the upper in response to the outward movement of the uppertrimming means.

16. In a shoe machine, upper-trimming means movable to trim surplus material from the margin of the toe-end portion of a multi-ply upper 'on: is. last prior .to thelasting or the margin of comprising par-ts relatively movable to re ease the theupp'er inwardly over an insole on the 'last,

uppen-gripping means for'gripping the margin of the toeuend of the upper. and for applying a pull toth'e upper prior to the-upper-trimming opera.- tion, said rupperegrippin'g 'meansvcomprising a pluralityiot pairs of 'upperegripping jaws and jawecontrolling members movable to cause the jaws'gto release the upper, and means carried by the upperetrimming means for thus moving said jawecontroll-ing members' 1 17. In a shoe machine, upper-trimming means movable/to trim surplus material from the mar- 'gin of the toe-end portion of a multi-ply upper on a last prior to the lasting of the margin of the upper inwardly over an insole on the last,

said upper-trimming means comprising a plurality of trimmers movable thus to act on the upper respectively at different times, a plurality of grippers associated respectively with said dif.- ferent trimmers for gripping the margin of the toe end of the upper and for applying a pull to the upper prior to the upper-trimming operation, and means to cause said grippers to release the upperin a sequence corresponding to the sequence in which said trimmers'act on the upper.

18. In a shoe machine, upper-trimming means movable to trim surplus material from the margin of the toe-end portion of a multi-ply upper on a last prior to the lasting of the margin-of the upper inwardly over an insole on the last, said upper-trimming means comprising a middle trimmer movable lengthwise of the last and side trimmers movable widthwise of the last to act on the upper prior to the action of the middle trimmer thereon, a plurality of grippers associated respectively with said different trimmers for gripping'the margin of the toe endof the upper and for applying a pull to the upper prior to the upper-trimming operation, and means to cause the grippers associated with the side trim mers to release the upper prior to the gripper associated with themiddle trimmer.

19. In a shoe machine, upper-trimming means movable to trim surplus material from the margin of the toe-end portion of a multi-ply upper on a last prior to thel-asting of the margin of the upper inwardly over an insole on the last, said upper-trimming means comprising -a plurality of trimmers movable respectively in different directions outwardly from positions opposite the bottom of the last to perform the trimming operation, and a. plurality'of grippers associated respectively with said different trimmers for gripping the margin of the toe end of the upper and for applying a pull to the upper prior to the upper-trimming operation, each of said grippers comprising parts relatively movable to release the upper in response to the operative movement of the trimmer associated therewith.

20. In a shoe machine, upper-trimming means movable outwardly from opposite the bottom of a last to trim surplus material from the margin of the toe-end portion of a multi-ply upper on the last prior to the lasting of the margin of the upper inwardly over an insole on the last, said upper-trimming means comprising a middle upper-in responsevto the. operative movements or the-trinnners-associated therewith and a eq en elcqrrespondingfto the sequence in wh ch said trimmers act on the upp :21, "In .a ,shoehmachine, means for supporting plyupperon a last in ,outspread relation to the edge of, thejlast bottom, upper-trimming means movable to trim from said outspread margin one or moreinner layers of the upper materials while leavin a mar in'pf the outer-layer to be lasted nwardly .over an insolevon the last, said uppervtrimming means comprising a plurality of trimmers movable respectively in different directions outwardly from positions opposite the bottom of the last to perform the trimming operation, and

a plurality of grippers associated respectively with said different trimmers for gripping the margin of the toe end Of the upper and for pulling it outwardly over-said supporting means preparatory to the upper-trimming operation,

- said grippers comprising parts relatively movable to release the upper in response to the operatlve movements of the trimmers associated therewith.

22. In a shoe machine, means for supporting the margin of the toe-end portion of a multiply upper on a last in outspr'ead relation to the edge of the last bottom, upper-trimming means movable outwardly from opposite the bottom of the last to trim from said outspread margin one or more inner layers of the upper materials while leaving a margin of the outer layer to be lasted inwardly over an insole on the last, said upper-trimming means comprising a middle trimmer movable lengthwise of the last and side trimmers movable widthwise of the last to act on the upper prior to the action of the middle trimmer thereon, and a plurality of grippers associated respectively with said different trimmers for gripping the margin of the toe end of the upper and for pulling it outwardly over said supporting means preparatory to the upper-trimming operation, each of said grippers comprising a pair of upper-gripping jaws and a jawcontrolling member movable to cause the jaws to I release the upper in response to the operative movement of the trimmer associated therewith.

23. In a shoe machine, means for supporting the margin of the toe-end portion of a multi-ply upper on a last in outspread relation to'the edge of the last bottom, upper-trimming means movable to trim from said outspread margin one or more inner layers of the upper materials while leaving a margin of the outer layer to be lasted inwardly over an insole on the last, said uppertrimming means comprising a plurality of trimmers movable respectively in different directions outwardly from positions opposite the bottom of the last to perform the trimming operation, a plurality of grippers associated respectively with I. said different trimmers for gripping the margin of the toe end of the upper and for pulling it outwardly over said supporting means preparaoutwardly from positions opposite the bottom of 10 the last to perform the trimming operation, a plurality of pairs of upper-gripping jaws assooiated respectively with said different trimmers for gripping the margin of the toe end of the upper and for pulling it outwardly over said supporting means preparatory tothe upper-trimming operation, fluid-operated members associated respectively with said difierent pairs of jaws for holding one jaw of each pair in gripping relation to the upper, and links connecting said members to the jaws controlled thereby, said links being movable to cause the pairs of jaws to release the upper in response to the operative movement of the trimmers associated therewith.

BERNHARDT J ORGENSEN.

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