US958251A

US958251A - Tabi-fastener attachment for sewing-machines.

Info

Publication number: US958251A
Application number: US53968810A
Authority: US
Inventors: Charles M Horton
Original assignee: Singer Co
Current assignee: Singer Co
Priority date: 1910-01-24
Filing date: 1910-01-24
Publication date: 1910-05-17
Anticipated expiration: 1927-05-17

Description

0. M. HORTON. TABI EASTENER ATTACHMENT FOR SEWING MACHINES.

APPLICATION FILED JAN. 24, 1910.

Patented May 17, 1910.

2 SHEETS-SHEET l.

WITNESSES v 0. M. HORTON,

TABI FASTENER ATTACHMENT FOR SEWING MAGHINES,

- APPLICATION FILED JAN. 24, 1910 3 5 53 Patentad May 17, 1 910. v

2 SHEETS-SHEET 2,

INVEIWOI? rrnn STATES PAT CHARLES M. HORTON, or ELIZABETH, NEW JERSEY, assmnon. To THE SINGER MANUFACTURINGCOMPANY, A CORPORATION or new JERSEY.

' TABi-rAsTENEn ATTAcnMnNT Foe SEWING-MACHINES.

Patented May is, taro.

. Application filed January 24 19 10. Serial No. sas es.

interposed metal plates arranged at intervals along the seam, as in the manufacture of that class of Japanese foot wear known as tabi, in which the two overlapping plies 0fthe heel portion embrace between them one end. of a fastening plate or fastener adapted to engage a suitable fastening loop upon the vided with the head 2 in which is mounted other heel flap or portion of the article.

According to thepresent invention, the sewing machine bed-plate has preferably set into its upper face at the end adjacent the stitch-forming mechanism the foot-piece of a forwardly extending bracket having upwardly projecting lugs entered by fulcrum pins carried by a rocking frame upon which is rigidly mounted an upright open-mouthed I chute to receive the fasteners and a rotary carrier formed with peripheral radially disposed recesses adapted to successively convey the fasteners from the mouth of the chute to the stitch-forming mechanism, the

fasteners being maintained intheir respective recesses In the carrier by a runway mounted upon the rocking frame and embracing the marginal portion of the carrier between the mouth of thechute and the stitching position. The feeding-mechanism.

comprises a feed-dog whose operative serrated work-enga-ging surface is substantially coveredby the spring-actuated presser-foot in conjunction w1th a portion of the margin of the rotary carrier, whereby the feed-dog acts not only to advance the overlapped plies which- Fignre 1 is an elevation of the forward portion of a sewing machine, partly in section, with a fastener feeding attachment applied thereto, and Fig. 2 15 a plan of the same with the parts of the sewing machine above the work-plate omitted. Fig. 3 is a front end view of the parts represented in Fig. 1. Fig. 4 is a perspective View of the rotary carrier disk and a portion of the frame upon which it is mounted, and Fig. 5

a detail perspective view of the cap-plate of the runway. Fig. 6 is a side elevation and Fig. 7 a plan of the presser-foot. Fig. 8 is a perspective view of two overlapped pieces of fabric showing a line of stitching by. which they are united togetherv wit-h interposed fasteners and Fig. 9 a similar view showing the united plies of fabric reversed to expose the operative portions of the fasteners.

The machine frame is formed with the bedplate 1 and overhanging bracket-arm prothe reciprocating needle-bar 3 carrying the needle i and the presser-bar 5 embraced by the pressureggpmng 6 and having secured to its lower e by means of the fastening portion 9.

- screw 7 the 'presser foot shank 8 with foot- Depending from the bed-plate is the shut- I tle-race 10 in which is mounted the shuttle provided with the thread-case 11 and cooperating with the needle in the production 0 stitches, the shuttle being actuated by the rock-shaft 12 in a well known manner. The bed-plate 1 is provided with a throat plate 13 formed with a needle-hole 14 and feed-apertures 15 through which latter passes the feed-dog 16 fixed upon the feedbar 17 and shown herein provided with parallel rows of feed-points. The feed-bar 17 is pivotally supported at one end by center screws 18 upon the feed-rocker 19 which is mounted on the feed rock shaft 20,

journaled upon the conicalointed center screws 20*, while the opposite end of the feed-bar has a lateral slot 21 entered by a roller-stud 22 upon a lateral arm 23 of the feed-lifting rock-shaft 2 1, journaled upon the conical pointed center screws 2%". The feed-actuating and feed-lifting rock-shafts are or may be actuated by any suitable means. y 7

The upper face of the bed-plate at its forward end is shown notched to receive the tootpieoe 25 of a "forwardly projecting bracket 26 extending across the forward end of the bed-plate and provided with upwardly projecting perforated bearing-lugs 27. Mounted upon the said bearing lugs.

by means of alined fulcrum-screws 28 is a rocking frame 29 disposed transversely of the bed-plate and provided with a handle 30 for tilting the same in opposition to a rip eral radially-disposed fastener-recesses 36 with intermediate tongues 37, the adjacent groups being separated by; spacing tongues 38 of greater width than those between the component recesses of each group.

Secured upon the rocking frame 29 adjacent the front bearing lug 27, by means of the screws 39, is a bracket-plate 40 having an angular boss 41 open atthe outer side to receive the lower end of the'angular fastener chute or magazine tube 42 which is confined therein by means of clamp-plates 43 and fastening screws 44. The tube 42 has a longitudinal slot or opening upon its outer side and is shaped in cross-section to substantially fit the tabi-fastening plates or fasteners 45 which are formed in practice adjacent their larger ends with a transverse row of apertures 46 to receive the stitches by which they are secured to the fabric. The chute is clamped in position with its lower extremity only sufliciently above theupper face of the carrier 35 to provide suitable clearance for the free' rotation of the latter, and the lower extremity or mouth of the chute is in register, at its inner end,or that nearest the ournal-stud 33,.with the inner ends of the fastener recesses 36 of the carrier.

Secured to the under side of the rocking frame. 29 by means of the screws 47 is a curved plate 48 having in its'upper side a se ental recess 49 adapted to receive the ta i-fasteners 45 in their assage from the mouth of the chute 42 to t e needle-hole 14 of the throat-plate, the recess 49 beingclosed at the top by means of a segmental cap-plate 50, secured in position by screws 51, so asto form a runway for the fasteners which embraces the outer marginal portion of the carrier disk 35 formed with the fastener recesses 36.

The delivery portion of the runway afforded by the overlapping

plates

48 and 50 is notched above the throat-plate to expose a portion of the feed-dog 16 and to form the spaced tongues 48*and 50 embracing the margln of the carrier 35 and overlyin one side of the feed-dog, the tongue 48 eing suificiently narrow to expose a portion of the area of the serrated under sides 37 of the s acing tongues 37 to the action of the feedog which they partially overlie. The cap-plate 50 is shown 'rovided at its inner edge opposite the stitc ing point with two indicator notches 52 coiiperatmg with radial marks 53 opposite the centers of the divisional tongues 38rbet-ween the clusters of recesses 36. v

Preparatory to operatin the machihe, the carrier is turned by han to bring one of its marks or graduations 53 into register with one of the indicator .marks 52, which are astitch-length apart, whereby the carrier is brought into such relation with the needle-hole 14 of the throat-plate that the operation of the feed-dog upon the bottom of the carrier or the interposed fabric will propel the latter in such manner as to bring,

the thread-apertures 46 of the fasteners 45 successively into register with the needlehole, which apertures 46 are formed a stitchlength apart and the extreme apertures not.

more than a stitch-length from the adjacent edge of the fastener.

To insure the proper presentation to the stitch-forming mechanism of the marginal portion of the two lies of fabric and the inner edges of the asteners to be secured between the same, an edge-guide is provided, consisting of the foot-plate 54 secured by means of fastening screws 55 upon the throat-plate and provided with an upturned guiding lip 56, which is in practice set back from the needle-hole a space about equivalent to the distance between the apertures 46 and the inner edge of the fasteners 45, whereby the guide serves not only to. direct the edges of the spaced upper and lower plies of fabric, but to cotiperate with the runway for the fasteners in guiding the latter to the stitching position.

As shown in Figs. 6 and 7, the operative portion 9 of the presser-foot is made comparatively narrow and is slightly curved to conform with the eri hery of the carrier 35 and is provide midway of its length with. the needle-hole 9 In the use of the attachment above described, the chute or ma azine 42 is first provided with a supply 0 fasteners 45, as

represented in Fig. 1, and the carrier 35 rotated by hand in the directlon of feed to bring one of its indicator marks 53 into register with one of the marks 52 of the run- 7 way. The carrier-supporting frame 29 is then tilted, as represented in ig. 1, by pres sure upon the handle 30-for introduction of the lower ply a of material, after which the upper 1y b of material is introducedbeneath tiie presser-foot above the carrier, and the presser-foot lowered. The machine being set in motion the needle makes its reciprocations through the two plies of fabric the mouth of said chute and the stitch-formesegaei in the productiornof a line of stitches 0 and I the feed-dog, which acts upon the material interposed at one side between the same and the serrated lower face of the carrier tongue 3! and at the other side between itself and the bottom of the presser-foot 9, so as to advance the work for spacing the stitches and to prcpel the carrier '35. inner end portions of the fasteners are guided past the stitching point by the:stepby-step rotary motion of the carrieiy-they are stitched in between the overlapped plies of fabric, as represented in Fig. 8. After the parts of the article are united as dc-- scriberhthe fabrics are reversely folded upon themselves-into the form shown iii-Fig. 9,

so as to bring their initialouter faces together and to thus conceal the line of stitching and to expose the tapered outer end portions 7 of the fasteners.

As the edge-guidefifi .is arranged parallel with the direction of the feed, and the fastener recesses 36 of the carrier 35 are open at the outer end, it will be observed that as the fasteners continue their advance beyond the stitching point they will move in a straight path in, the direction of feed of the material and will gradually be Withdrawn from their respective recesses, and thus disengaged from the carrier.

Having thus set forth the nature of the invention what I claim herein is i 1. The combination with a straight-away stitching machine comprising stitch-forming mechanism including a reciprocating needle, feeding mechanism for imparting an advance movement to the work after each stitch-forming operation, anda throat-plate through which the needle reciprocates, of a fastener chute, a rotary carrier formed with peripheral radially disposed fastener-recesses adapted to register successively with ing mechanism, and means for pressing said carrier upon the throat-plate adjacent the stitch-forming mechanism, said feeding mechanism b its engage ent with an interposed ply o fabric serv ng to propel the carrier to feed the fasteners to the stitchforming mechanism for attachment to said fabric. j

2. In a sewing machine, the combination with stitch-forming and work-feedin mechanisms, and a throat-plate, of a astener chute; a rotary carrier formed with-peripheral radially-disposed fastener recesses adapted to register successively with the mouth ofsaid chute and the stitch-forming mechanism, a rocking supporting frame for said chute and carrier, fixed fulcra for said frame parallel with the throat-plate and upon which said frame'is adapted to tilt, a spring for pressing saidcarrier upon the throat-plate adjacent the stitch-forming mechanism, a resser-foot disposed above As the base ora spring-actuated pres'ser-foot disposed the throat-plate and adjacent the periphery of said carrier, and a spring independent of that of said carrier for pressing said presserfoot upon the throat-plate.

' 3. 111 a sewing machine, the combination with stitch-forming mechanism, a throatplate and feeding-mechanism including a feed-dog having rising and falling movements through said throat-plate, 'of a fastener chute, a rotary carrier with its periphery partially overlying the feed-dog upon-the sid-ethereof nearest its axis v of rotation and formed with radially. arranged fastener recessesextending inwardly. from the periphery and adapted to-register suecessi vely with the mouth of said chute and the. stitch-forming, mechanism, means. for pressing said-carrier upon the throat-plate adjace'izitv .tliestitch formi-ng mechanism, and

aboveflthe-throateplate and overlying a portion of the feed-dog adjacent that covered by said carrier.

a. In a sewing machine, the combination with stitch-forming mechanism, a -thr0atplate and feeding-mechanism including a feed-dog having rising and falling movements through said throat-plate and adapted to impart to the work an advance movement after each stitch-forming operation, of a fastener chute, a rotary carrier with its periphery partially overlying the feed-dog upon the side thereof nearest its axis of rotation and formed with radially-arranged fastener recesses extending inwardly from the periphery and adapted to register successively with the mouth of said chute and the stitch-forming mechanism, said peripheral recesses being arranged in groups or clusters of which the component recesses are equi-distantly spaced and the nearer recesses of adjacent groups'or clusters are spaced apart a greater distance, and means for pressing said carrier upon the throat-plate and feed-dog whereby the feed-dog by its 11 engagement with an interposed ply of fabric serves to propel the carrier to feed the fasteners to the stitch-forming mechanism for attachment to said fabric.

5. In a sewing machine, the combination 15 with stitch-forming mechanism, a throatof stitch-lengths and being provided with 1st;

&

indicator marks corresponding with such spacing, a non-rotary supportin frame for said rotary carrler having anm lcatormark.

by said carrier.

6. In a sewing machine, the combination with stitch-forming and work-feedin mechanisms, and a throat-plate, of .a astener chute, a rotary carrier formed with peripheral radially-disposed fastener recesses adapted to register successively with the mouth of said-chute and the stitcheforming mechanism, a rotary supporting frame for said chute and carrier formed with-a runway extending from the mouth of said chute toward the stitch-forming mechanism and embracing a ing mechanism.

eeaeei portion ofthe periphery oi said carrier, a ined fulcra parallel with the throat-plate upon which said frame 18 mounted, a spring acting upon said frame to press the rotary carrler upon the throatplate, a spring-actuated presser-foot disposed above the throat-plate and adjacent the periphery of said carrier, and a stationary edge-guide adjacentthe resser-foot and adapted to coiiperate with said runway of thesupporting frame in confining the fasteners within said peripheral recesses of the carrier in their approach to the stitchform- In testimony whereof, I have signed my name to this specification, in the presence of two sub'scribin witnesses.

means it. none-on."

- Witnesses:

H. A. KQRNEMANN, Norman J. "Acme,