US1053571A - Machine for attaching welts. - Google Patents

Description

L. A. OASGRAIN. MACHINE FOR ATTAGHING WELTS.

APPLICATION TILED JULY 20,1908.

Patented Feb. 18, 1913.

2 SHEETS-SHEET 1.

//Vl/[/V7Z7R l/V/T/VESSES'. iwzt 4 L. A. GAS GRAIN. MACHINE FOR ATTAOHING WELTS.

APPLICATION FILED JULY 20,1008.

1,053,571, Patented Feb. 18,1913.

2 SHEETS-SHEET 2.

-No. 669,025, dated February UNITED STATES PATENT OFFICE.

LOUIS A. CASGRAIN,

OF BEVERLY, MASSACHUSETTS,

ASSIGNOR T0 UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEW r JERSEY.

MACHINE FOR ATTACHING WELTS.

Specification of Letters Patent.

Patented Feb. 18, 1913.

Application filed July 20, 1908. Serial No. 444,471.

To all whom it may concern Be it known that I, LOUIS A. Oiisouam, a citizen of the United States, residing at Beverly, in the county of Essex and Commonwealth of Massachusetts, have invented certain Improvements in Machines for Attaching Welts, of which the following description, in connection with the accompanying drawings, is a specification, like reference characters on the drawings indicating like parts in the several figures.

This invention relate-s primarily to machines for attaching welts and is particularly adapted for use in the manufacture of ashoe of novel construction, similar to what is known as a McKay welt shoe, in which, after a shoe has been lasted, a welt or strip of material, usually of leather, is secured to the underside of the insole by fastenings which extend directly through welt, upper and insole substantially perpendicularly to thesurface 0f the insole. In this type of shoe, some suitable filling material is usually placed upon the insole within the welt to form a surface substantially flush with the lower surface of the welt after which an outsole is secured to the welt by througlr and-through stitching as usual.

The shoe, to the manufacture of which this present invention particularly relates, comprises a welt which is secured to the insole by metallic fastenings, for example, such as are shown in United States Patent 26, 1901. So far as the broader features tion are concerned, any suitable mechanism may be employed for securing the welt to the other parts of the shoe by stitches, nails or other fastenings, but when fastenings of the character described in the patent just mentioned are employed, it is preferred to make use of a machine for orming and inserting them of the type disclosed in applicants co-pending application, Serial No. 306,612, filed March 17, 1906.

An important feature of the present in vention is the utilization of themeans by which the welt is led into attaching position as the means for feeding not only the welt but also the shoe towhichrit, is being attached. i y

In this aspect, the invention comprises feeding means which, after th'e'welt has been secured at one end of the shoe, engages only a portion of thewelt which has not yet been of the inven-- attached and thereby feeds the shoe. With such a construction, all stretching of the welt is avoided and no additional feeding mechanism such as has been previously employed is required. Preferably, the means which engages the welt is arranged to reciprocate or oscillate in substantially the direction in which the work is fed at the attach ing point, the construct ion being such that upon the forward movement of the feeding means the welt is carried forward positively, while uponthe movementof the feeding means in the opposite direction it does not move the \velt. To this end, some means is preferably provided for holding the welt during the retracting movement of the feeding means. In the particular machine herein described, the work is sustained upon a horn or other work support which is movable to clamp and to release the work. The timing of the machine is such that when the work support is clamping the welt, the feeding means is being retracted. As herein shown, also, while the work support is in clamping position, a fastening for uniting welt, upper and insole is inserted. There after, the work support is released and the work is fed forward by the means described and the cycle of operations is repeated until, in the case of the manufacture of the type of shoe first mentioned, the welt has been socured around the entire forepart and shank of the shoe and, if desired, around the heel, a so.

It is sometimes desirable, for example in order to increase the flexibility of the shoe, to provide in the inner edge of thewelt slits extending partially or entirely through its thickness. Preferably, the slits will stop short of both the outer edge and the upper surface of the welt so that there will be no liability that they will be visible in the finished shoe. However, as the bending of the shoe when in use occurs chiefly near the ball, it is unnecessary to slit the welt at other portions of the shoe.

Accordingly, anotherl'eature of the invention is the provision of a welt slitting mechanism which preferably may be thrown into and out of operation at the will of the operator while the machine continues in operation. In the illustrated embodiment of this featureof the invention, there is provided a welt slittingdevice constructed and arranged toflbe' actuated by engagement with la part of the mechanism which forms and inserts the fastenings.

9 5o pect this feature of invention is considered diivei bar 40 which 15 connected at its upper to be applicable in any such relations. en to a lever 42 pivoted at it and provided Furthermore, the invention comprises, in Wit a roller or stud co-act1ng with a peaddition to the features already referred to, ripheral cam upon the shaft 4 powerful various combinations and arrangements of springs being provided for causin the parts as well as certain details of construc driver, when the cam permits, to descend fbr tion which will be heieinafter fully deinserting a fastening. Awl 20, former 30, scribed and will he defined in the claims. driver 38, and some connected parts are all \eferring to the accompanying drawings mounted in a swinging head 46- pivoted in which illustrate a preferred embodiment of the frame 2 at- 48 and movable forwaidl t e present invention applied to a nailing and backwardly to bring the awl and driver machine of the type hereinbefore mentioned alternately over the point at which a fastenigure 1 is a View in side elevation of the ing is to be inserted. entire machine with certain parts of the All of the parts just described in detail rame broken away to show parts otherwise may be, and preferably are, of substantially hidden; Fig. 2 is a view in l the same construction as is illustrated in the principal parts of the machine which In the specific conate upon the work, struction about to be described, the welt sh slitting mechanism includes a knife which is guided by the presser foot, against which the work is clamped and through which the l fastenings enter the work, and the knife is e arranged sufliciently close to the point at supportingmechanismswhich the fastenings are inserted so that with any usual spacing supporting mechanisms; Fig. 6 is a view in the slits perspective of the welt and shoe guide with some of the parts separated from the others; and Fig. is a view from the side opposite its holding power although, owing to the shape of the particuto that illustrated in Fig. 1 of the presser lai' 'astenings which are preferably used, foot, the weltsupporting finger and the tip they would still be effective for holding the e Wlth a P fl shoe Shown in the parts together even if pass through the slits.

In practice the welt before it is attached which it occupies with reference r its edge. In tl presser foot 6 which has an opening 7 for the passage of fastenings and against which Supporting th the work may be clamped at times by a work aspect th i support shown as a vert cally movable horn for attaching 8 rotatable about a sliding spindle 10. A.

a We to another Part f a h th one lever pivoted in the frame and engaging iis dg f [h lt overlapping th -t t the spindle .10 at oneend is connected at the which it is being attached in combination other y 1 W61 4 t9 mechanism actuated by with means for supporting the overlapping held forshaft 4' for raising the A treadle a suitable edge of the welt, such means being its position. ward in welt sustaining pcsiticn by 16 is connected a rod 18 to starting An awl 20 secured in an awl bar 22 is to interfere with the proper the welt as it is being applied to the shoe. Although this welt supporting mechanism is particularly intended for a machine for attaching welts, such as is herein shown and described, wherein the Work is supported The ever is actuated to cause the awl y a cam upon the he awl sliding through a guioe 2e rigidly secured to the swinging head hereinafter referred to. A former 30, cotiperating as in the prior machine with an anvil. and

positioning of upon a ornwhich enters within the shoe, Other p r s t 1m a fastening, is (ruined yet such supporting inec anism would be pon the l0Wer end of a sliding bar prouseful in other relations where parts of a vlded with ZL PIVOtQd block 34 which is re ceived in the forward end of maybe guided accurately machine of the earlier application above mentioned.

Referring now to the parts which relate more particularly to the present invention and first to the mechanism for guiding the welt and for feeding it and, through it, the work progressively to the fastening inserting mechanism, 50, as shown most clearly in Figs. 1, and 6, is a bar provided with a downwardly and forwardly extending projection 52 which is adapted to bear against the upper I) of a lasted shoe substantially opposite the edge of the insole a. Directly abovethe bar 50 and resting upon it is another bar 51 the edge 56 of which serves as a guide for the inner edge of the welt (1 to be attached to the shoe. Above this bar 51- is another 58 provided at its outer end with a down-turned flange 60 which serves as a guide for the outer edge of the welt. The shank of each of these guides is provided with slots (31 through which screws 62 pass for securing them to the shank 64; of an approximately T-shaped lever 66. These slots 61 provide for the relative adjustment of the guides so that welts of different width and so that the position of the welt with reference to the shoe and particularly to the edge of the insole may be adjusted as desired. One arm of lever 66 is bifurcated and pivotedat 68 to an ear 7O projecting laterally from a bracket 72 which extends forwardly from another bracket 74 rigidly secured to the frame 2. The other arm of T-shaped lever 66 is provided with ahead 78 having a vertical slot 80 in which slides a block 82 (see Fig. 2) pivoted upon stud 84 provided with a shoulder 86 so that by means of a nut 88 and Washer 90 the stud may be clamped to a lever 92 provided at its lower end with a slot 94 through which the stud passes. The lever 92 is secured to a rockshaft 96 (see Fig. 1) which in turn is provided with an upwardly extending arm 98 carrying a roller or other stud 100 which engages the cam groove 102 in a disk 101 fixed upon the driving shaft. By loosening nut 88 and adjusting block 82 vertically, the oscillating move ment imparted to the welt guide by the cam may be varied as desired.

As shown more particularly in Figs. 5 and 6, the bar 58 of the welt guide is provided with two pins 110 which project through a feeding member 112 provided with teeth 114 to engage and slightly penetrate the welt c. A bent spring 116 held against member 112 by a small rod 118 pass ing through holes in pins 110 maintains the teeth 114 yieldingly against the welt so that when the welt guide is moved to the left, as shown in Fig. 5, the welt, and the shoe to which the welt has been attached at a point in advance of the welt guide, will be fed forward while upon the return movement ing so proportioned of the welt guide, if the shoe is held againstbacluvard movement as will be explained, the teeth 114- will slide backwardly over the welt. As indicated in Figs. :2 and 7, the presser foot- 6 has upon its front side a block 120 adjustablv secured to the foot by screws 122 and projecting below the work engaging surface of the foot. This block serves also as a gage for the inner edge of the welt.

Referring now to mechanism which may be embodied in the machine if it is desired to produce slits up n the inner edge of the welt, es 'iecially at-the ball of the shoe, to increase its flexibility, 130 (Figs. 3- and et) IOPICSOlltS a knife which is clamped by a screw 132 to a block 13t pivotally supportctil upon a stud 1236 extending backwardly from a lever 138, a spring 1 10 which is secured at one end in a slot in the stud 136 and at its other end in a slot in theblock 13t serving to maintain the lower 7 end of knife 130 against one side of the presser foot 6. The lever 138 is clamped to a rockshaft 142 supported in a part of the frame 2 and the lever is provided with a bearing surface 144 which is-normally held against a fixed .st-ud 115 thus limiting the upward movement of the knife. At its rear end, the shaft 112 is connected to the laterally turned end of a rod 146 which at its rear end is connected by pin 148 to a bell crank lever 150 pivoted at 152 to a fixed part of the frame. A rod 154 connected to the other arm of the bell crank lever 150 extends to the base of the machine and is connected to a treadle 156. A spring 158 connectedto lugs upon rods 1 1 and uponlever 150 tends not only to counterbalance the weight of the parts connected to the horn in the rear of the pivot of lever 12 but also tends to move the rod 116 and therefore the knife 130 to their foremost positions where stud 136 will be out of the path, of former 30. 7

As shown clearly in Figs. 2 and 3, when treadle 156 is depressed, the rod 146 draws the shaft 142 rearward so that the rear. end

of stud 136 will be in position to be engaged by the former 30as it approaches its foremost and lowest position, the parts beand arranged that the knife 130 is forced into the welt during the last portion of the downward movementof the former. In order that the slits 6 formed by the knife shall not be visible in the finished shoe, they preferably do not extend quite through the welt or to its outer edge, although they may do so if desired. As indicated in Fig. 3, the knife 130 is arranged close to the driver passage 7 in presser foot 6 through which the fastenings are driven into the work so the fastenings which is likely tobe used the slit made by the knife will be between the fastening in the welt just about to be that for any spacing of 4O with the shoulder 170. The friction-of the upon to hold the toe of The rod 146, the rear end of which is held to receive a coiled spring middle portion ward end of block against rotation, will be put under torsional strain by'ie swinging of lever 138 downward through the action of former 30 and" the tendency of this rod to return to its initial condition may be relied upon for raising the knife 130 to its highest position, shown in Fig. 3, and for bringing bearing surface 144 into engagement Withstud 145. If desired, however;-a spring, such as 160, (Fig. 4) acting upon rod 146 may be employed for to its highest position. It is considereddesirable to provide also a supporting clevice', such as finger 162, to sustain the edge of welt 0 near the operating point. It has been found that such a support resists any tendency of the welt to curl downwardly as it is being attached, especia ly around the toe. As illustrated, (Figs. 4 and 5) the finger 162 supported in bracket 72 is provided at its rear end with ablock 164 recessed 166 bearing at its rear end against a shoulder of the bracket so that the finger is pressed yieldingly'forward under the wel against the upper of v the shoe,'preferably just in advance of the point .at which the fastenings are inserted. Since it may be desirable to retract the supporting finger 162 into inoperative position a recess is provided in the of finger l62 and-the forprovided with a shoulder at 17O tobe engaged by the toe of a hand lever 172-pivoted at 174. If it is desired to'retractfinger- 162, lever 172 may be drawn forward causing its toe to travel down the inclined parts may be relied surface 168 and to come into engagement leverli72 in engagement with the shoulder sole (1 by driver 170 or additional means such as a lathh may be provided;

The functions of the various parts have been explained in connection with the detailed description but a scription of the operation of the-machine will now be given. The Welt 0 having been drawn through the welt guide, (shown' in detail in Fig. 6) so that the end portion of the welt will be between horn 8 and presser foot 6, alasted shoe is placed upon the horn and the machinestartedinto operation by depressing treadle 1-6. As inthe machine of. the prior application mentioned, a fastening (Z having a hook-shaped head is formed from a continuous wire by former 30 and other cotiperating parts and is then driven through the welt 0, upper b and in- 38 into a hole previously formed by the awl 20 and its inner end is clenched by the born 8. After. the first fasteninghas been inserted, the horn drops brief general dereturning the knife -claim asnew and desire to secure away from the presserfoot 6 to relieve the pressure on the work during the feeding movement. After the horn has started to descend, the lever 66 is moved by cam- 102 "in a direction to carry the welt guide and the "feeding member 112 forward orto the left as shown in Figs. 2 and 5. The teeth 114 of member 112 cause the welt to move forward {with the guide and, since the welt has been secured to the shoe by one fastening, the-shoe in turn is fed forward over the horn. At the end of this forward move ment, the horn is raised to clamp the work in its new position and subsequently the le ver 66.is moved to carry the welt guide backward and, since the .welt is rmly clamped by born 8 and presser foot 6, the welt is drawn through the welt guide, feeding member 112 sliding over the welt. If the operator at any time desires to slit the welt he will depress treadle 156 to draw stud 136 backward into the path of former 30 in which case the knife 130 .will be caused to produce a slit 6 in the welt just before each fastening is driven solongas the treadle 156 is held in depressed position. If

the lever 172 is placed in the position shown in Fig. 4, the finger 162 will extend under 'and support the welt as shown in Figs. v3

and 7.

It will be understood, of course, that while a complete machine has I been described in full detail in order that the in vention may be thoroughly understood, various modifications in construction and arrangement, in addition to those already referred to, which will occur to those ac quaint-ed with the art,,may be made without departing from the substance of the invention as defined in the claims.

Having described my invention, what I by Letters Patent of the United States is I .1. In a machine for attaching a welt to a lasted shoe, a shoe supporting horn normally fixed laterally and engaging the inside of the insole of the shoe, in combination with feeding means consisting solely of a welt engaging device. and actuating mechanism.

therefor, said de'vice being constructed and arranged to act upon and through the welt after it has been attached slroe and thereby to effect through the welt at one end to the alone the feeding of both the welt and. the

shoe over the horn.

,2, In a machine for attaching a welt to a lasted shoe, :1. single feeding device engaging only a portion of the welt which has not yet been attached to the shoe,

upon said device to push forward both the welt and the shoe to which the welt is being attached..- I

3. In .a' machine of the class described, mechanism. for attaching a welt progres in combinationwith positively actuated-mechanism acting sively to a last mechanism comprising welt engaging means,

sively to a lasted shoe, in combination with a welt guide engaging the welt in the rear of the attaching point and constructed and arranged to de ver the welt in such position 3 9. In a machine of the class described, welt. slitting means incombination with welt feeding means constructed and arranged to engage the welt in the rear: of the slitting means and push the welt forward toward and past the slitting means.

it). in a machine of the class described, a reciprocable welt feeding means constructed and arranged to push the welt forward while reciprocating in one direction and to move over the welt while reciprocating in the opposite direction, in combinaticn with relatively to the attaching mechanism that the welt will be attached near one of its edges to the hce with the other edge overlapping the e ge of the shoe, together with mechanism which constitutes the only work 'leeding. means acting upcn said guide to push forward both the welt and the shoe to which the web is being attached.

r In u ti f th class d s ib d, means for slitting the welt between feeding -1,, ,i, fo attaching a welt progrc movements located in advance of the point ed slice, in combination with a positively actuated weltguide engaging the well in the rear of the attaching'point and c nstrnctcd and arranged to deliver the welt in such position relatively to the attaching mechanism that the welt will be attached near one of its edges to the shoe with the other edge overlapping the edge of the shoe. together with mechanism which constitutes the only work feeding means acting upon said guide to reciprocate it substantiallv in the direction of the length of the welt and when reciprocating in one directicn acting to push forward the welt and the shce to which the welt is being attached and while reciprocating in the opposite direction to he inoperative for moving either the welt or the shoe.

in a machine of the class described, nn-rhani'sm for attaching a welt to another part of a shoe, in combination with feeding at which the feeding means engages the welt. 11. In a machine of the class described, means including a presser foot for supporting and positioning a. welt, in combination with welt slitting mechanism comprising a knife, a supporting lever upon which the knife is pivoted, means tending constantly to maintain the knife in engagement with the prcsser foot, and means acting upon the lever to cause the knife to-slit the welt.

mechanism including a knife for slitting a welt, in combination with mechanism for in- ,serting fastenings into the welt between successive slits, and a presser foot provided with a passage for guiding the fastening into the welt and with a guiding surface arranged to be engaged by the knife for determining the position of the slits.

13. In a machine of the class described, means for supporting and positioning a welt, in combination with Welt slitting mechanism comprising a knife, a knifecarrying lever, an axially .movable shaft upon which said lever is mounted, yielding lncans acting normally.to move the knifeinto a position out of engagement with the welt, means acting in opposition to said yielding means to cause the knife to slit the welt and means whereby said shaft may be moved axially to put the slitting knife out of operative relation with themeans by which it is caused to slit the tvelt.

14. In a machine of the class described, mechanism for attaching a welt progressively to a lasted shoe with one edge of the welt overlapping the edge of the shoe, in comhinatitm with a work support, a welt a swinging lever carrying said means, an actuating lever. and an adjustable positive connection between said levers for regulating the extent of feeding movement.

in a machine of the class described, a work support movable to clamp and to release the work, mechanism for inserting fas teuings for attaching the welt to the insole of a shoe, means acting upon the welt in the rear of the attaching point to move the work intermittently over the work support while it is released.

7. lo a nntchinc of the class described, a cam shaft, afastcning former actuated from said shaft, in combination with a welt slitting device operated directly by the fastening l'oruu-r and constructed and arranged for support. having a relatively thin end and movement into and out of operative engagabeing constructed and arranged for movenwm therewith 1119 111 izontally toward and from the 5. In a machine of the class described, work support, a spring tending constantly meelnrnism for insc'ting fastenings, means tor slitting a welt located in close proximity to the point, at which the tastemngs are mto press the end of the welt support toward the work support and against the upper of the shoe, and means through which the welt serted. and means for feeding the welt, the Support may be retracted against the resaid means being constructed and arranged sistance of the spring'and locked in inoptio slit the welt upon one side of the fastent erative position.

mg inserting point and then to feed the slit t 15. In a machine of the class described, portion of the Welt to the opposite side of the combination with mechanism for attachthat point during one cycle of operations. ing a welt to a lasted shoe of guiding means 12. In a machine of the class described,

porting 'means being movable into and out of operative position Without affecting the action of said guiding means.

In testimony whereof I have signed. my name to this specification in the presence of 15 two subscribing Witnesses.

LOUIS A. CASG RAIN. Vitnesses FREDERICK L. Emroxos,

ELIZABETH C. COUPE.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

' Washington, D. G.

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