US1271059A - Sewing-machine and folding mechanism therefor. - Google Patents

Description

J. R. MOFFATT. SEWING MACHFNE AND FOLDING MECHANISM THEREFUH.

APPLICATION FILED APR. 6.1914- 1 ,271 ,059. Patented J uly 2, 1918.

5 SHEETS SHEET I avnmntoz wihwwco v 1/ I I. R. MOFFATT.

SEWING MACHINE AND FOLDING MECHANISM THEREFOR,

APPLICATION FILED APR. 6. 19:4. 1,271,059.

Patented J uly 2, 1918.

5SHEETS-SHEEI 2.

J. R. MUFFATT. SEWING MACHINE AND FOLDING MECHANISM THEREFOR.

APPLICATION HLED APR. 6. 19M. 1 ,271,059. Patented July 2,1918.

5 SHEETS-SHEET 3.

v @nuenlior fi m Wihwema-n n I I J. R. MOFFATI. SEWING MACHINE AND FOLDING MECHANISM THEREFOR.

APPLICATIQN FILED APR. 6.19M. 1,271,059. Patented July 2,1918.

5 SHEETS-SHEET 4.

::.\\\\\\\\\\\\wnv \w n 1 a III/IA J. R. MOFFATT.

SEWING MACHINE AND FOLDING MECHANISM THEREFOR.

APPLICATION FILED APR. 6.1924.

1 ,27 1 ,059. Patented July 2, 1918.

5 SHEETS-SHEET 5.

UNITED STATES PATENT orFIoIa JAMES B. MOFFA'IT, OF CHICAGO, ILLINOIS, ASS IGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINOIS, A CORYOBATION OF ILLINOIS.

Specification of Letters Patent.

Patented July 2, 1918.

Application filed April 6, 1914. Serial No. 829,912.

'1'0 all whom it may concern:

Be it known that I, JAMES R. MOFFATT, a citizen of the United States, residing at Chicago, in the county of Cook, State of Illinois, have invented certain new and useful Improvements in Sewing-Machines and.

Folding Mechanisms Therefor, of which the following is a description, reference being had to the accompanying drawing and to the figures of reference marked thereon.

My invention relates to improvements in sewing machines, and more especially to a sewing machine of the cup feed type, wherein the material is fed by two feed disks and overseamed by suitable stitch forming mechanism combined-with a folding device cooperating with the stitch formin mechanism whereby a narrow strip of fa ric may be folded and fed to the overseaming mechanism, and small tubes with the raw edges covered formed, or the raw edges covered and blindstitched in the center to the body fabric, as in the 'form-ation of fiat, trousers belt-loops.

A sewing machine of the character referred to is well known in the art, being used for glove sewing, sweater sewing, stocking hemming, &c., and the particular type to which the present invention relates is known as the Union Special cup feed machine.

The object of the present invention is primarily to provide a combination of folder and machine for the purpose above referred to.

Still another object is to provide a folder for a sewing machine, in combination witha trimmer, the two being simultaneously and uniformly adjustable bodily with respect to the stitch forming mechanism.

The invention, therefore, consists in the matters hereinafter described and referred to in the appended claims.

In the accompanying drawings illustrating the invention,-

Figure 1 is a perspective view of a portion of a cup feed machine, showing my invention applied thereto;

Fig. 2 is an end view partly in section;

Fig. 3 is a top plan view of the folding device and'cup feeds;

Fig. 1 is a perspectiveview of the folder detached;

Fig. 5 is a cross section of the same, w th the movable member of the folder swung vertically to allow insertion of the material;

Fig. 6 is a sectional View, showing the folder in position and the movable member retracted to initially position the material;

Fig. 7 is a similar view with the folder in operative position when the machine is operating on the material;

Figs. 8 and 9 are detail views representing the formation of blind stitched and tubular strips respectively;

Figs. 10 and 11 represent the strips as completed according to Figs. 8 and 9, respectively;

Fig. 12 is a vertical section through a portion of the machine;

Fig. 13 is a bottom plan, illustrating the lateral adjustment of the folder; and

Fig. 14 is a view in side elevation, showing the means for separating the feed cups;

Fig. 15 is a bottom plan view of the same.

In these drawings, 1 represents a portion of the casin of a cup feed-machine of the type referre to, having the two cup- filling disks 2, 2. The needle isshown at 3, the looper at l, the deflector for both needle and looper thread loops at 5, the support forholding up the edge of the fabric at 6, the stitch finger at 7, the plate having the needle-guiding roove at 8, the needle thread guides at 9, an the looper thread guides at 10. All these parts are of the usual construction, and need not be more specifically referred to. A supporting bracket 11 adjustably supported on the frame of the machine by the elongated slot and screw connection 12, is divided at its lower end, and has secured to it a part 13, having the vertical plate 11', through which slot and screw connection 12 is made with the machine frame. =This part 13 supports the folder and trimmer.

The folder has a stationary base 14 adjustahly secured by screws 15 to the part 13 (see Fig. 13). The stationary base carries the stationary side wings 16 and central fin 17. These wings extend forwardly between the cups 2, the central fin well in, as shown in Figs. 3 and 4 at 34, and attached to the outside of the side wings byscrews 18, are spring fingers 19. The movable part of the folder is comppsed of a bar 20 formed with at 21 to the base 1-1. A spring 25 secured by screws 22 to the yoke piece and adapted to be engaged by a pivoted latch 26, normally holds the bar 20 from being swung upwardly.

This bar 20 carries a slidable sleeve 27, to which are attached the two spaced fingers which when swung down to position, straddle the central fin 17 and cooperate there-with. and with the side wings 16 to properly fold the material as it is fed tothe cups. The forward ends of the fingers 28 are toothed, as at 29, to engage the material and push it into the cups as the sleeve 27 is slid forward on the bar 20, and the in-nerfaces of the spring fingers 19 have teeth 30 to prevent the withdrawal of the materiaL The spring fingers 19 also accommodate different thicknesses of material. and extend beyond the ledger blades as hereinafter described. A stop pin 47 limits the movement of the sleeve '27.

The operation of the folder is as follows: The latch :26 is released and the bar 20 with the sliding sleeve and fingers 28 swung upwardly; the goods are then placed in position across the stationary wings and fin of the folder, and the movable part swung down, so that the spaced fingers will straddle the fin and form the fold in the fabric. Before returning the part to its normal posi- TttlOIl. the sleeveis moved rearwardly, and when the lowered position is reached, the slide '27 is shifted along the bar 20, to push the material into the cups, so they' will take hold of the same. Occasionally this movement is not enough to shift the material a suflicient distance to permit the cups to act thereon. It is. therefore, necessary to return the sleeve for a short distance and repeatifihe operation, the teeth 30 at the end of the spring fingers 19 gripping the material and preventing it from being pulled back with the return movement of the sleeve 27.

It will thus be seen that the movable part not only cotiperates with the stationary part. to fold the material to proper shape to have the edges oval-seamed. but also enables the operative to initially position the material between the cups. The bodily vertical adjustment of this folding device through the slot and screw adjustment 1'2. enables the bite of the needle into the goods to be varied, so that it may either engage the portion of the fabric which is pressed up from the center of the fin 17 cooperating with the spaced fingers '28. thus over-seaming the edges and uniting them to the body fabric at. the center. as in Figs. 8 and 10, or simply uniting the edges and overseaming them. as in Fig.

9. making a tube. as shown in Fig. 11.

A gage 35 composed of a suitably graduated nut bears on the ledge 36 formed on the vertical part of the bracket 11. and by manipulating the same; the precise adjustment 32 of the trimmer,

desired may be secured, as shown in detail in Fig. 12.

In connection with this folder, I have devised a trimming device including a horizontal trnnmlng blade 31, which reciprocates backand forth and acts in connection with stationary ledger blades 32 which form extensions of the side wings 16 to trim olf the surplus material. the trimming mechanism as a whole being supported on the same bracket as the folder, and partaking of the adjustments of the latter.

It also has a deflecting plate 33 to deflect the trimmed ofi' strips.

In Figs. 14 and 15, I have illustrated, respectively, in side elevation and in bottom plan, the means for limiting the pivotal movement of the outer cup, the same being substantially as illustrated in application filed by Lansing Onderdonk on October 28th. 1913. Serial No. 797.771. In these figures. the outer cup is pivoted on a pin or shaft 37, carried by the inner cup. This outer cup carries a rigid arm 38, the free end of such rigid arm carrying a lateral pin 39. This pin extends outwardly through a slot 40 formed in the casing and its up and down movements are limited by set'screws 11 and 42, the screw 11 entering the slot 10 from the bottom of the frame and the screw 1:2 enter ing the upper part of the slot through an opening 43 in the casing. The foot lever A is pivoted at 15 to the casing and its forward end extends under the pin 39. This pin 39 is yieldably held against the slower stop or screw 11 by the usual flat spring 46. It. will thus be seen that, by adjusting the screw 41. the outer cup will be held in difl'erent spaced relations relative to the inner cup.

I do not herein claim the trimming mechanism, as that forms the subject matter of another application filed by me of even date herewith. Serial No. 829,913, but I do claim herein the combination of the folder and trimmer simultaneously and uniformly ad justable. and the ledger blades 32 forming an extension of 'the side wings 16 of the folder, and the combination so far as the specific folder and the trimming mechanism operate to perform functions together, as distinguished from their independent purposes.

I do not. also, herein claim the folding mechanism per are, as that forms the subject matter of another application filed by me of even date herewith. Serial No. 829,911.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent, is

1. A sewing n'iachine-including in combination. a stitch-forming mechanism having a needle, a folding device "for folding *a fabric and placing the edges thereof side by side, a trimming device for trimming said edges, a common support for said folding device and said trimming device. and means for adjusting said support relative to the needle.

2. In an overseaming machine inchiding a horizontal needle and c ioperating stitch forming devices. a folding device comprising vertically arranged istationa r v wings and cooperating folding members, and a movable trimming member with means for reciprocating it horizontally, and a common vertirally adjustable support for the folding device and trimming member.

3. In a sewing machine, stitch forming mechanism, including a needle entering and emerging on the same face of the fabric. and cooperating stitch forn'ting mechanism. a folding device having side portions for folding the side edges of the fabric, and means for crimping the body portion of the fabric, said crimping means extending to the stitching point and being arranged in a plane which intersects the path of movement of the needle. whereby said needle will pass through both side portions and through the central portion of the fabric.

4. In a sewing machine. stitch forming mechanism. including a needle entering and emerging on the same face of the fabric. and cooperating stitch forming i'nechanism, a folding device having side portions for folding the side edges of the fabric. means for crin'lping the body portion of the fabric. said crimping means extending to the stitching point and being arranged in a plane which intersects the path of movement of the needle. Whereb said needle will pass through bo h side portions and through the central portion of the fabric. and means cooperating with the crimping means-for initially feed ing the material.

5.111 a sewing lltiltlllll0 a needle and cot'iperativc stitch forming n'techanistn. a device for folding a fabric into substantially W-shaped formation. a feeding mechanism for feeding the folded fabric past the needle, whereby said needle will pass through the edges of both side portions and said central portion of the fabric. and devices acting on the fabric at the deliverr end of the folder and attached to the folder to maintain the va rir in its folded relation until acted upon h said feeding mechanism.

(3. In a sewing machine including a needle entcrit-ig and emerging on the same face of the fabric and cooperative stitch forming mechanism. a device for folding a fabric comprising a fixed member constructed to form a trough open at both ends and top. and a movable part cooperating with said tixed member to fold said fabric in said trough in a substantiallv W-shaped formation. said folding device t'lelivering said folded fabric to the stitching p int, and a feeding l'IlQCl'ltlDiSllt for feeding the folded fabric past said needle. whereby said needle tral portion, and yieldable means disposed between the feedin; mechanism and the folding device to direct the side portions of the fabric together bef'olcsaid folded fabric.

enters the feeding mechanism.

8. A. sewing machine including in combination. a ntedlc. a foldingdevice for folding a strip of fabric so as to bring its side edges together and for rrintping the fabric bctween its side edges and POsitlUllll'ig the same relative to the needle. so the needle passes through the side edges and through lhe'central critnped portion for joining the .same. and a trimming device located in ad vance of the needle for trimming the edges prior to the stitchin of the satne.

9. A sewing machine including in combination. a needle. a folding device for folding a strip of fabric so as to bring its side edges together and for crimpingthe fabric between its side edges and positioning the same relative to the needle. so the needle passes through the side edges and through the central erimped portion for joining the same. a trimming device located in advance of the needle for trimming the edges prior to the stitching of the saute. and means for supporting said folding device and trimming device whereby the same may be. simultaneously adjusted relative to the needle.

10. In a sewing machine. a pair of feeding cups. a needle reciprocating above said cups and a loop taker cooperating therewith. a work support disposed in advance of said cups and having a part extending forwardly between the cups to a point substantially in line with said needle, and a folding device mounted on said support.

11. In a sewing machine. a pair of feeding cups havingvertically disposed feeding surfaces one of said cups being; movable. a stop to retain said movable cup in spaced relation to the other cup. means for yieldablr retaining said cup in said spaced relation. a folding device including a support having a ribprojecting between said feedin; surface. and means for laterally adjusting the position of said rib relative to said feeding surface.

In a sewing machine, a pair. of feeding cups having vertically disposed. feeding surface, one of said cups betng movable, a stop to retain said movable cup to spaced relation to the other cup. means for yieldably retaining said cup in said spaced relation. a folding device including a support having a rib projecting between said feeding surface. and means for laterally adjusting the position of said rib relative to said feeding surface. and means to adjust said stop to vary the space between said cups.

I In a sewing machine. the comliination of a stitch forming mechanism including spaced rotatable feed cups, and a crimping device disposed on one side of said cups and in advance of the stitch forming mechanism and having its forward end projecting between said cups and tapered to substantially conform to the adjacent portions of the periphery of said cups.

ll. In a sewing machine hating horizontal cup-feeding devices. and an overseaming stitch forming mechanism. a folding device including fixed wings extending forwardly between the cups. a swinging member carrying a wing cooperating with the stationary wings to fold the fabric. said wing being slidably supported on said swinging member.

1.3. In a sewing machine having horizontal cup feeding devices. and an overseaming stitch forming mechanism, a filding device including fixed side wings and a central fin extending forwardly between the cups, a swinging bar, a sleeve slidable thereon, spaced fingers carried by said sleeve and straddling the fin when the bar is swung down.

16. In a sewing machine having horizontal cup feeding devices and an overseaming stitch fori'ning mechanism, a folding device including fixed side wings and a central fin extending forwardly between the cups, a swinging bar, a sleeve slidable thereon, spaced fingers carried by said sleeve and straddling the tin when the bar is swung down, said fingers having teeth at their forward ends.

17 In a sewing machine having horizontal c'up feeding devices and an overseaming stitch forming mechanism, a folding device including fixed side wings and a central fin extending forwardly between the cup a swinging bar, a sleeve slidable thereon, spaced fingers carried by said sleeve and straddling the tin when the bar is swung down, said fingers having teeth at their forward ends. and spring fingers projecting in advance of the stationary wings and having teeth on their inner faces.

18. Iira sewing machine having horizontal cup feeding devices and an overseaming stitch forming mechanism. a folding device including fixed side wings and a central fin extending forwardly between the cups, a swinging bar, a sleeve slidable thereon, spaced fingers carried by saxd sleeve and ing a central crimp therein, and means for vertically adjusting the folder bodily, whereby the central crimped portion may he caught by the needle and sewed to the overseamed edges, or the edges may be.

overseamed and united and a tube formed.

20. In a cup feed overseaming machine for blind stitching belt loops, a folding device comprising stationary vertically projecting side wings and a central crimping fin, and a cooperating folding member movable vertically to engage and crimp and fold the fabric, and means whereby it may be moved. horizontally to 'initially feed .the material to the cups.

:21. In a cup feed overseaming machine for blind stitching belt loops, a folding device comprising stationary vertically projecting side wings and a central crimping fin, and a cooperating folding member movable vertically to engage and crimp and fold the fabric. means whereby it may be moved horizontally 'to initially feed the material' to the cups, and means for adjusting the folding device bodily with respect to the stitching mechanism.

2:2. In a cup feed overseaming machine for blind stitching belt loops, a folding device comprising stationary vertically projecting side wings and a central crimping fin, a coi'iperating folding member movable vertically to engage and crimp and fold the fabric. means whereby it may be moved horizontally to initially feed the material to the cups,-means for adjusting the, folding device bodily with respect to the stitching mechanism. and a trimming device simulta neously and uniformly adjustable with the folding device.

23. In a cup feed overseaming machine for blind stitching belt loops. a folding device comprising stationary vertically projecting side wings and a central crimping fin. a cooperating folding member movable verticallyfto engage and crimp and fold the fabric. means whereby it may be moved horizontally to initially feed the material to the cups. means for adjusting the fold ng device bodily with respect to the stitching mechanism. and a trimming device including stationary ledger blades which form extensinus of the side wings. I

24-; A sewing machine having a horizon-' tally reciprocating needle, a looper coopera strip of fabric so that its edges are brought together, means for supporting and feeding said folded strip, and a trimming device for trimming the edges of the strip prior to the stitching of the same. i

25. A sewing machine having a horizontally reciprocating needle, :1 looper cooperating therewith, a folding device for folding a strip of fabric so that its edges are brought together, means for supporting and feeding said folded strip, a trimming device for trimming the edges of the strip prior to the stitching of the same, and means located between the trimming device and the stitchin mechanism for deflecting the trimmed-o edges.

26. A sewing machine having a horizontally reciprocating needle, a looper cooperating therewith, a folding device for folda.

ing a strip of fabric so that its edges .are brought together, means for supporting and feeding said folded strip, a trimming device for trimming the edges of the strip prior to the stitching of the same, and means for supporting said folding and trimming device whereby the same may be adjusted vertically relative to the needle.

In testimony whereof, I affix my sigmiture 30 in the presence of two witnesses.

JAMES B. MOFFA'FI.

Witnesses:

J. C. RADNER, H. O. ABEL.

Images