US579697A

US579697A - ooupal

Info

Publication number: US579697A
Authority: US
Publication date: 1897-03-30
Anticipated expiration: 1914-03-30

Description

(.No Modell) v 6 SheetS-Sheet 1.

P. A. OOUPAL.

SHOE SEWING MACHINE. I No. 579,697. Patented Mar. 30, 1897.

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(No Model.)

. P. A. GOUPAL.

SHOE SEWING MACHINE.

Patented Mar. 30-, 1897.

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6 Sheets-Sheet 3.

(No Model.)

P. A. GOUPAL.

SHOE SEWING MACHINE. No. 579,691 Patented Mar. 30, 1897.

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P. A. GOUPAL SHOE SEWING MACHINE.

No.5'79 69-7. Patented Mar. 30, 1897.

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6 Sheets-Sheet; 5. P. A. GOUPAL. SHOE SEWING MAGHINE.

No. 579,697. Patented Mar. 30, 1897.

6 Sheets -Sheet 6.

(No Model.)

P. A..GOUPAL. SHOE SEWING MACHINE.

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Nrrnn STATES .ATENT PETER A. COUPAL, OF BOSTON, MASSACHUSETTS, ASSIGNOR OF ONE-HALF TO WILLIAM GORDON, OF SAME PLACE.

SHOE-SEWING MACHINE.

SPECIFICATION forming part of Letters Patent No. 579,697, dated March 30, 1897'. Application filed October 23,1896. Serial No. 609,851. (No model.)

To all whom it may concern: sehts a section on the line 5 of Fig. 4 Fig.

Be it known that I, PETER A. OOUPAL, of 6 represents a section on line 6 6 of Fig. 4. Boston, in the county of Suffolk and State of Figs. 7, 8, and 9 represent a portion of the l\lassachusetts,have invented certain new and machine, showing the positions of the various 5 useful Improvements in Sewing-Machines, of parts at different stages of the operation. 5 5

which the following is a specification. Fig. 10 represents a perspective view of por- This invention has for its object to provide tions of the machine. Fig. 11 represents a means for basting a lasted upper to the inner perspective view of the presser-foot. Fig. 12 sole of a welted boot or shoe after the upper represents a section on line 12 '12 of Fig. 3.

10 has been secured thereto by the lasting-tacks, Fig. 13 represents a diagrammatic View or 60 and at the same time pulling out the lastingchart of the cams carried by the driving-shaft. tacks close to the point Where the basting- The same letters of reference indicate the stitches are formed, the upper and welt being same parts in all the figures. thus secured together by fastenings which In carrying out my invention I provide a 15 will not interfere With the operation of a weltsuitable stitch forming mechanism, which 65 sewing machine in stitching together the welt, may be of any suitable type, preferably adaptupper, and inner sole, so that the permanented to carry a waxed thread. The mechanism stitch-forming operation may be performed here illustrated comprises a curved needle F, immediately after the lasting operation withwhich has a lateral movement while it is proout the necessity ofwaiting until the upper jected to feed the work and a return move- 70 has become sufficiently set in its lasted form ment while it is retracted. The machine is to Warrant the removal of the lasting-tacks. provided with a sliding head a, which moves It is the usual practice, after lasting a boot or horizontally on fixed guides 17 b on the frame shoe upper and securing it with lasting-tacks, of the machine and is reciprocated by means to lay aside the upper while on the last and of a cam c, affixed to the driving-shaft s of 75 allow it to remain for a considerable period, the machine, a rock-shaft d, mounted in fixed usually twenty-four hours, until the form of bearings on the frame and provided with arms the upper has become sufficiently permanent (1 (F, the former being engaged with the cam to warrant the removal of the lasting-tacks, c, and a link 6, connecting the arm 01 with an so that the welt, upper, and inner sole may ear affixed to the sliding head a. 80 be stitched together by a welt-sewing ma- The needle F is affixed to a holder or carchine. By my invention the lasting-tacks are rier f, which oscillates 011 a fixed stud f, Fig. removed progressively, and the upper and in- 6, secured to a flange a, on the sliding head ner sole are connected close to the point where a. The needle-carrier f is oscillated by means each tack is removed by light basting-stitches of a cam f in a disk on the driving-shaft s, 85 designed to form a temporary connection bea lever f pivoted at f to the frame of the tween the two and to hold the upper in its machine and having a trundle-rollf engaged lasted form upon the last during the permawith the cam f a bell-crank lever f pivoted nent-stitch-forming operation. at f to the flange a on the sliding head, and

My invention consists in the improvements a rod f connecting the longer arm of the le- 0 which I will now proceed to describe and verf with the needle-carrier f. The lever claim. f and bell-crank lever f are connected by a Of the accompanying drawings, forming a pin f in a block f (see Figs. 4: and 5,) the part of this specification, Figure 1 represents pin sliding lengthwise in the block to permit a front elevation of a sewin -machine emthe horizontal movements of the sliding head 5 bodying my invention. Fig. 2 represents an a without disturbing the connection between end elevation of the same. Fig. 3 represents the levers f and f a section on line 3 3 of Fig. 2. Fig. 4E repre- 9 represents a work-rest formed to support sents an elevation showing the needle and the lip t on the inner sole t of a boot or shoe 5o cutter operating mechanism. Fig. 5 repreand the portion of the upper to that bears on I00 the outer side of said lip, said rest being rigidly affixed to the frame of the machine. it represents a presserfoot formed on or attached to a lever it, which oscillates on the stud f, that supports the needle carrier. The presser-foot is formed to enter the angle formed by the lip 75 and the face of the inner sole t and to press said lip and the portion of the upper bearing against its outer surface against the fixed rest g, the presser-foot being normally pressed toward the rest 5 by means of a spring 7L2, connected at one end with the lever h and at the other end with the flange a. To move the presser-foot away from the rest 9 for the purpose of releasing the work, a slide its is provided, having a screw 71 arranged to bear on the lever 7L and cause a presserfoot-displacing movement of said lever. The slide h is movable in a guide (1, affixed to the sliding head a, and has a lug 72, Figs. 1 and 2, which is located in the path of the longer arm of the bell-crank lever f, so that when said arm swings in the direction required to retract the needle it also causes the displacement of the prcsser-foot from its operative position.

To the fixed rest 9 is aftixed a cutter or shear blade i, arranged to cooperate with a movable cutter t" in trimming oif the surplus portion of the edge of the upper u, as indicated in Fig. 8, the movable cutter t" being affixed to and moving with the needle-carrier f, so that when the needle advances and penetrates the lip tand upper to the cutters sever the portion of the upper that projects above said lip, or, if desired, they may trim both the lip and upper.

j represents a tack-puller which is formed and arranged to engage the lasting-tacks that secure the upper to the inner sole and to remove said tacks at a point immediately in advance of the work-rest and cutters, so that each tack remains in position to hold the upper in place until it has nearly reached the cutters, and is then removed to prevent injury to the cutters and needle. The tackpullerj is affixed to an arm j, which is pivoted to a lever j Said lever is pivoted at j to the frame of the machine and has a trundle-rollj, Figs. 2 and 3, engaged with a cam 7' in a disk on the driving-shaft s. The arm j is extended rearwardly from the leverj and is pivoted to a second leverj, which is provided with a trundle-roll 7' engaging a cam j in a disk on the driving-shaft s. The lever 3' is oscillated to give the tack-puller a substantially horizontal movement toward and from the work, while the second lever 3' gives the tack-puller a vertical oscillating movement and is timed to move the operating end of the tack-puller upwardly just as it moves forward and engages a tack.

represents the looper, which is affixed to a tubular shaft h, Fig. 12. Said shaft is intermittently rotated in fixed hearings on the frame of the machine by means of a racksegment k on a disk 75*, affixed to the drivin place.

ing-shaft s, and a pinion 7t, aflixed to the looper-shaft 7t and meshing with the segment 73.

'm represents the take-up lever, which is oscillated by a cam m and an arm in, having a trundle-roll m engaging the cam on.

n represents an auxiliary presser-foot or work-holder,whieh is an arm or linger formed to penetrate the inner side of the lip tand adapted to alternate with the prcsser-foot h in holding said lip. 'lhe work-holder n is atfixed to a lover a, which is pivoted at 71/ to an arm affixed to the frame of the machine and is connected by a link a with a lever n", pivoted at or to the frame of the machine and held by a spring it against a cam n on the driving-shaft s.

The operation of the above-described mechanism is as follows: The needle being retracted and the sliding head a at the left-hand end of its movement, as viewed in Fig. l, the oporator, retracting the auxiliary work-holder n by means of the handle portion of the lever it, brings the work over on the fixed rest 9, then releases the work-holder n, thus allowing the spring a to press said holder against the lip of the inner sole and hold the work The machine now being set in mo tion, the presser-foot 7t first advances and cooperates with the work-holder a in holding the work against the rest {1, the work being thus securely held before it is penetrated by the needle. The advancing needle then penetrates the work, and is followed by the cutter t", which cooperates with the cutter t', as indicated in Fig. 8, after the needle has penetrated the lip and upper. The tack-puller then advances in a direction opposite to the advancing movement of the needle and withdraws the tack nearest the needle and cutters. After the needle has reached its extreme forward movement the work-holder n is retracted, releasing the work, and the sliding head a is moved toward the right,causing the needle to feed the work, the latter being at this time additionally held by the presserfoot h, which moves with the needle. The looper then supplies thread to the needle and the work-holder a advances and holds the work against the rest 9. The needle and the cutter 2' now withdraw, the needle drawing a loop of thread through the upper and the lip of the solo. The presser-foot h is dis placed after the withdrawal of the needle, the work-holder n eontinuin g to hold the work against the rest g. The sliding head now moves toward the left, returning the needle to position to penetrate the material for the formation of the next stitch.

It will be seen that the work is held by the rest g, the work-holder a, and the presserfoot 70 while the needle is penetrating the work and during the operations of trimming the edge of the upper and withdrawing the tacks.

It will be seen that the presser-foot and auxiliary work-holder both cooperate with ICO the back-rest g in holding the work while the needle is penetrating, and that the presserfoot moves laterally with the needle and holds the work against the back-rest during the work-feeding movement of the needle, the auxiliary work-holder being at this time withdrawn. 7 The auxiliary work-holder performs the important function of engaging the work and holding it securely in place while the needle and resser-foot are retracted and are moving laterally to return the needle to its starting position. The work is therefore at all times controlled by the machine and connects the upper and inner sole by stitches of uniform length.

I am the first, so far as I am aware, to combine a stitch-forming mechanism, a work rest or guide, a fixed trimming-cutter, a presserfoot, a tack-puller, and a movable trimmingblade; and I do not therefore limit myself, so far as this combination is concerned, to a stitch-forming mechanism of the curved-needle type nor to the mechanical construction herein shown and described of the other elements of the said combination.

I claim 1. Asewinganachine of the character specified, comprising a fixed back-rest; a reciprocating sliding head or carrier; a curved needle, and a presser-foot, both supported by said head; and an auxiliary work-holder which releases the work while it is being fed by the needle and presser-foot, and holds the work during the return lateral movement of the needle and presser-foot.

2. A sewing-machine of the character specified, comprising a fixed back-rest, a reciproeating sliding feeding-head, a curved needle and a presser-foot; an auxiliary work-holder which releases the work while it is being fed and holds the work during the return lateral movement of the feed device, and a tackpuller adapted to draw the tacks while the work is held by the fixed rest and the presserfoot and the auxiliary work-holder.

3. The combination of a stitch -forming mechanism, including a curved needle and an oscillating carrier therefor; a fixed rest formed to extend into the angle of an inner sole and its lip a fixed trimming-blade secured to and supported by said rest; and a movable trimming-blade secured to the needle-carrier and arranged to cooperate with the fixed blade in trimming the work.

4. The combination of a stitch forming mechanism, a work rest or guide formed to support an inner sole and its lip, a fixed trimming-blade adjacent to said rest, a presserfoot arranged to cooperate with said rest in clamping the work, a tack-puller arranged to draw tacks from the work at a point beside the work-rest and presser-foot, and a movable trimming-blade adapted to cooperate with the fixed trimming-blade in removing the surplus material from the work.

In testimony whereof I have signed my name to this specification, in the presence of two subscribing witnesses, this 19th day of October, A. D. 1896.

PETER A. OOUPAL.