US2682240A - Sewing machine work guide - Google Patents

Description

Jlme 1954 N. KNAUS ET AL SEWING MACHINE WORKGUIDES 3 Sheecs-Sheet l Filed Nov. 9, 1950 June 29, 1954 KNAUS ETA| 2682240 SEWING MACHINE WORK-GUIDES Filed NOV. 9, 1950 s Sheets-Sheet 2 lllllllllll'lll June 29, 1954 N. KNAUS ETAL 8 240 SEWING MACHINE WORK-GUIDES Filed NOV. 9, 1950 3 Sheets-Sheet 3 Patented June 29, 1954 SEWING MACHINE WORK GUIDE Nicholaus Knaus, Cranford, and Agnes G. Millingtun, Clifton, N. J., assignors to The Singer Manufacturing Company, Elizabeth, N. J., a corporation of New Jersey pplication November 9, 1950, Sexial N0. 194,756

9 Claims.

This invenoion relates 110 improvements in werkguides for use in connection with sewing machines and has for its primary object 130 facilitate the attadhment of one or more cords to an elongated tape of the type employed in separable fasteners. More specifically the invention relates to an improved attachment comprising means for guiding a tape and a pair of cords 120 the stitch-forming meehanism of a sewing machine in a manner such that one cord will be disposed above and the other cord below the tape with both cords at one edge portion of the tape, whereby both cords Will be stitched to the tape inone line of stitching.

With the above and other objects in view, as will hereinafter appear, the invention comprises the devices, combinations, and arrangements of parts hereinafter described in connection with the accompanying drawings, which illustrate a preferred embodiment of the invention and in Which:

Fig. 1 represents a. top plan view cf a sewing machine in which the present invention is incorporated.

Fig. 2 represents, on an enlarged. sca1e a fragmentary top p1an view of the stitching area of the sewing machine disclosed in Fig. 1.

Fig. 3 represents, on an enlarged sca1e, a sectiona1 view takten substantially along the ]ine 3-3 of Fig. 1.

Fig. 4 represents, on an enlarged scale, a sectional view haken substantially a1ong the line 4-4 of Fig. 1.

Fig. 5 represents a sectional view taken substantially a1ong the line 55 015 Fig. 2.

Fig. 6 represents a top plan view of the stitching area of the present sewing machine, with the presser-bar swung to its inoperative position ancl with a portion 013 the attachment removed from the machine so as better 130 illustrate ehe pressarfoot.

Fig. 7 represents a fragmentary right-side view of the attachment as disclosed in Fig. 6.

Fig. 8 represents, on an enlarged scale, a. top plan view of the sewing machine throat-plate, the feed-dog and the 1ower cord guide.

Fig. 9 represents, on an enlarged sca1e, a bottom p1an view of the presser-foot employed in the present attachment.

Fig. 10 represents a sectional view taken substantially along the line l0--I0 of Fig. 2.

Fig. 11 represents, on an enlarged scale, a sectional view taken substantially along the 1ine Illl of Fig. l.

Referring more specifically to the drawings, the invention is disclosed as embodied in an overedge sewing machine of the type disclosed in United.

' 2 States patent of N. Knaus, N0. 2238796 April 16, 1941.

The present machine has a main frame 15 Which carries a horizontally disposed Worksupport I6 through which operates a serrated feed-dog forming a part of a work-feeding mechanism hereinafter referred 1:0. The main frame also Supports an overedge stitch-forming mechanism comprising a reciprocating curved needle I1, an under or neeclle-loop taking looper I8, anal an overedge looper o1 loop-spreader I9 which cooperates with the needle l! and looper 18 in the formation of overedge stibches. The machine also includes a conventional work-feeding mechanism, designated generally by the numeral 2, and a cooperating presser device for advancing th work 110 and beyond the stitch-forming mechanism. The presser device comprises a horizontal1y disposed spring-depressed presser-bar 2! pivoted at its rear end to the machine frame and. carrying at its forward. end, a presser-foot 22 which overlies the serrated feed-dogs 23 which form a part of the work-feeding mechanism ZU.

As hereinaboire indicated, this invention relates primarily to improved means embodied in a machine of the type described for presenting a tape and a pair of cords toward the stitch-forming mechanism in a manner such that one cord is disposed above and the other cord below the tape anti with both cords at one edge portion of the tape whereby both cords Will be stitched 130 the tape in one 1ine of stitches. In this connection, reference may be had 150 Fig. 11 which represents a section through a completed portion of the W01'k. In this figure, the tape is represented by the numeral 24, while the numerals 25 and 26 represent, respectively, the upper and lovver cords which are secured to the tape by a conventional over" seaming stitch which includes a needle thread 21 and a looper thread 28.

The present attachment includes a throat-plate 29 which is adjustably secured 130 the work-supporting means I5 by a pair of screws 30, 30, of which each passes through an enlarged aperture 3I to be threadedly received within apertures 32 provided. in the work-supporting means l6. Thus, ehe throat-plate 29 may be adjust-ed back and forth laterally of the direction of work feed. This throat-plate 29 is provided in a conventional manner with a plurality 01 s1ots 33, 33 of which each is adapted receive a respective one of the feed- dog elements 23, 23. It is be particularly noted tha1: the throatplate 29 is provided rear- Wardly of the point; of seam formation with a pair of aligned grooves 34, 34 which are in turn aligned with a pair of grooves 35, 35 disposed within a pair of the feed- olog elements 23, 23 spaced from each other in the line of seam formation. These grooves 34 and 35 are adapted to assist in directing the lower cord 25 to and past the stitching means in a manner which will be hereinafter de scribed.

Referring partieularly to Figs. 5, 7 and 8, the right-hand eolge portion cf the throat-plate 29 is provicled With an arm 35 which is plvotally secured to the rlght-hand eclge of the throat-plate by means of a pivot screw 31. The forward portion of the arm 35 is provided with a head member 38 formed With a lower-eorcl receiving groove 39 Whieh is of the so-called self-threading type due to the fact that lt communicates with an upward.ly open relatively narrow slot 39'. A cord 26 may be positioned within the groove 39 by threadlng the same through the slot 39' and it is to be particularly observer that the groove 39 is aligned with the grooves 34 anal 35 provided, respectively, in the throat-plate 29 and the feeddog elements '23. When the lower corol groove 39 is in its operative position, as illustrated in Figs. 2 and 8, the head portion 58 of the arm 35 rests upon a shelf portion 40 formed in the throat-plate 25. I-Iowever, when it is desired to thread the lower corcl through the groove 39, the presser-foot 22 may be swung to one side and the screw 31 may be loosened so as to permit the arm 35 to be elevated in a manner as illustrated in Fig. 7, in which position the operato1 may readily thread the lower corcl through the slot 39' and into the groove 39. Thereafter the arm 36 may be swung to its horizontal position and the screw 3'! tightened so as to lock the arm in its operative position.

Referring partlcularly to Figs. 2, 5, 6 and 9, there is providecl a presser-foot 22 which is adapted to cooperate With the feed- dog elements 23, 23 in the feeding of work to and past the stitching mechanism. This presser-foot includes an elongated sole-plate 4! having upper and lower surfaces 42 anal 43 as wel1 as an upturned toe portion 44. The upper surface 42 of. the soleplate is provided with a transverse arcuate groove 45 which recelves therein an arouately formeol pivot member 46 carried upon the lower or forward end of the presser-bar 2I. An arm 4'l, secured to the upper surface of the sole-plate by means of a screw 43, overlies the member 45 so as to hold the member 45 and the throat-plate in a pivotal relatlon. Thus, the presser-bar 2! normally Tunetions to blas the presserfoot downwardly toward the feed-clogs and. the arm 45, along with the platze 4'l, permits the presser-foot to pivot aboutthe arm 45 in a conventional manner. Fig. 6 illustrates the presser-foot 22 in its operative position but wlth its presser-bar 2l swung in a horizontal plane to an inoperative position so as better to illustrate the component elements of the presser-foot.

Referring partieularly to Figs. 2, 6, 9, and 10 the upper portion of the presser-foot 22 is provided With a, transverse slot 49 Which slidingly receives a block o1 base mernber 59. As may be best seen from Fig. 10, the block 59 is providecl With an enlarged aperture l wl'lich is adapted to receive the above notecl screw 45 which functions to lock the block in an one of a plurality of selective positions of adjustment relative to anti laterally of the presser-foot. As is dlsclosed in Figs. 2, 3, 6 and 9, the rlght-hand end portion of the block 55 carries an elongated member 52 which is provided with a downwardly inclined cord-guiding groove 53 which communicates with the outside by means of a constricted self-threacling slot 54. It is the function 02 the groove 53 to receive the upper corol 25 and to guicle the same directly in the line of neeolle reclprocation and beneath the tail portion of the presser-foot 22. In this conneetion, reference may be had to Fig. 2 which illustrates the upper cord. 25 as being directed through the groove 53 and in the path of the needle I! so that the latter Will penetrate the cord. Due to the fact that the block 50 is slidably mounted within the presser-foot 22, lt is manlfest that the upper thread-guiding groove 53 may be adjusted transversely of the direction of feed so that the cord 25 will always be presented directly in the path of the needle I7.

Referring particularly to Fig. 9, it is to be noted that the traillng end portion of the presser Soleplate 43 is provided. With an elongated groove 56 which is aligned with the thread-guiding groove 53 so as to receive the lower cord. 25 as the same passes beyoncl the stitchlng point. As may be best; observed from Figs. 2, 3, 5 anal 6, the upper forward portion of the presser-foot is provided With a stationary eyelet 51 which is adapted to guide the upper corcl 25 to the cord groove 53. Referring to Fig. 3, the lower portion of 1;he arm 52 is provided with a dependlng finger element 58 which normally projects below the lower surface 43 of the sole-plate so as to guide the righthand edge of the tape 24 in a manner as Will be hereinafter descrlbed in more detail.

The trailing portion of the arm 52 is bifurcated in a manner as is best disclosed in Figs. 2 anti 9, thereby to form a needle-receiving passage 59 which interseets the longitudinal axis of the thread-guiding groove 53. From this, lt is manifest that as the needle H reciprocates back and forth, lt Will, of necessity, have to pass directly through the upper cord 25 which is positively directed into the needle path by means of the bifurcated portion of the arm 52. Referring particularly to Figs. 2 and 3, lt is also manifest that the bifurcated portion 01 the cord-guiding arm 52 is disposed directly beneath the path of movement of the looper element I9 so that, in the normal operation of the sewing machine, the thread loops Will be concatenated about the bifurcated portion of the arm in a manner such that this arm Will funotion as a conventional chaining-off finger. Thus the arm 52 serves a two-fold purpose, to Witz it functions as a cordguide which positively directs the upper cord 25 into the path of the needle and, at the same time, lt functions as a conventional chaining-oxf finger to facilitate the production of overedge stitches about the eclge of the work.

In order to facilitate the lateral adjustment of the base member 53 of the upper cord-guiding member 52, the present attachment is provided with a micrometer adjusting screw 60 Which is threaded directly Within the forward portion 0f the presser-foot 22. This screw 60 is formed With a cylindrical shoulder element 6I which is disposed Within a slot 52 provided in the block 50. From this, those skilled in the art will readily appreciate that as the screw 60 is turned so as to shift the same inwardly toward or outwardly from the presser-foot, lt, at ehe same time, fumtions to shift the block 50 laterally of the presserfoot, thereby to adjust the cord-guiding arm 52 relative to the path of needle reciprocation. Once the cord-guiding arm has been properly positioned by means of the micrometer screw 6D,

the block 58 may be eflectively locked in such position by means 0f the screw 48.

F01 guiding a tape 24 to the stitching mechanism, th present attachment incluudes an arm 83 which is pivotally mounted upon the main frame 15 of the machine by means 0f a vertically disposed pivot screw 64. This arm 63 may be swung away from its operative position, disclosed in Fig. 1, 110 give access to the stitching mechanism. The forward portion 0f the arm 63 is provided With a depending pin 65 (see Fig. 4) which engages the forward portion of the Werk-supporting means 16 170 locate the arm in its operative position. As is best disclosed in Figs. 1, 3 and 5, the free end portion of the arm 63 is provided With a tape-guiding and. tensioning means, the details 0f which do not form a part of the present invention and thus Will n0t be describecl herein. I1: is sufiiclent t0 state that the tape-guiding means comprises a lread member 66 which is provided With a laterally elongated tape-receiving st 61 which functions t0 direct a tape directly toward the stitch-forming mechanism. Also, the head 66 is provided With a pair of guiding elements 68 and 69 which engage the edge portions 0f the tape so as 1:0 prevent the same from shifting laterally of the presser-foot. It Will be particularly observed from Figs. 1 and 4 that the guide members 68 and 69 are laterally adjustable relative to the head 66 by means of adjusting screws 18 and H, which screws are mounted in the member 66 and pass through enlarged apartures '12, 12 formed in the members 68 and 69. By adjusting the elements 68 and 68 laterally of the presser-foot, the tape may be properly directed toward the stitching mechanism in a manner such that the right-hand. edge portion of the tape will be properly aligned relative to the upper and lower cords 25 and 26. A conventionaltension device 13 is provided upon the head 66 for applying a tension upon the tape 24.

Referring particularly 110 Fig. 1, the sewing machine is disclosed as being supported upon a horizontally disposed table 14, 0f which the forward portion extends about the left-hand portion 0f the machine so as toprovide a small platf0rm member 'l5. Projecting upwardly from the platform member 15 is a bracke1: 76, 015 which one portion carries a conventional tensioning device 71 for receiving a pair of cords and 26 and for tensioning them and directing them toward the stitching mechanism. Also projecting upwardly from the bracket 16 is a pin 18 about which the tape 24 may be trained preparatory 1:0 directing the same to the tensioning and guiding head 66.

From the above, lt is t0 be understood that the tape 24 may be lecl about the upstanding pin 18 and thereafter directed 1:0 and through the tensioning and guiding means 66, after which the tape is directed beneath the presser-foot and above the throat-plate in a conventional manner. As hereinabove noted, the right-hand edge porti0n 0f the tape 24 is properly guided toward the stitohing mechanism by means of a depending finger 58 carried 011 the upper cord-guiding arm 52.

The upper cord 25 is directed from a source 0f supply through the tensioning means 11 and thereafter through the eyelet 51 carried upon the forwarol portion 0f the presser-foot alter which lt is directed 120 the passageway 53 0f the guiding arm 52, which passageway functions as aloove descrlbed t0 direct the cord within the path 0f the needle l! so that the latter will puncture the cord. The lower cord 26, like the upper cord, is directed through the primary tensioning means H and thereafter it passes through a slot 19 formed. in the arm 63 after which lt passes directly beneath the tape 24 and the presser-foot .22 so as to lie within the groove 35 of the forward feed-dog lement 23. Thereafter, the lower cord passes directly through the groove 89 in the arm 36, which groove directs the cord into the path 0f the needle IT, after which the cord lies within the aligned grooves 34 and 35 0f the throat-plate and the rearward feed-dog element 23. Since the throat-plate 29 is adjustable laterally of the presser-foot, the lower cord receiving-groove 39 may be shifted so that its longitudinal axis will intercept the path of neeclle reciprocation 1:0 the and that the needle will penetrate the lower cord after the needle passes through the upper cord 25 and the tape 24. Furthermore, as hereinabove noted, the upper cord-guiding groove 53 may be shifted laterally of the presser-foot by means of the micrometer screw 68 so that the upper cord 25 Will be properly pierced by the needle H. Thus, the present attachment provldes means f0r guiding a tape 24 and a pair of upper and. lower cords 25 and 26 toward the stitch-forming mechanism, With the one cord 25 disposed above and the 0thr cord 26 disposed below the tape 24 and with both cords at one edge portion of the tape whereby both cords will be stitched t0 the tape in a single line of stitching. Furthermore, the present attachment provides upper and lower cord-guiding elements 52 and 38 which are individually adjustable laterally of the presser-foot so as properly to position the cord Within the path of the reciprocating neeclle.

In oraler t0 prevent the presser-foot 22 from shifting laterally 0f the direction of feecl and thereby shifting the upper cord guide out of its proper position, the present attachment is provided with means for guiding the presser-foot into a fixed lateral position at all times during the operation of the machine. Referring particularly to Figs. 2 and 5, the present attachment includes a platform member 88, 0f which the forward portion is secured directly to the throat-pipe 29 by means of a pairof screws 8I, BI. Each 0f these screws 8I is threaded dlrectly within a suitable aperture 82 provided in the throat-plate 29 and passes through a suitable slot 83 formed in the platform so as t0 permit the latter to be adjusted laterally 0f the throat-plate Z8. 'I'his plat form 88 is provioled with a pair of parallel grooves 84 and 85 which are disposed crosswise of the 'direction of work feed and each of which receives therein one of a pair 0f guicle arms 86 and 81. Each of these guide arms 86 and 81 is provided with a suitable slot 88 which is adapted t0 receive therein the shank portion 0f a screw 88 which is threaded directly within the platform member 88 in a manner such that its associated guiole element 86 or 81 may be acljusted longitudinally 0f lts slot. Referring particularly Fig. 2, it will be observed that the right-hand end portion of the guide 86 is adapted t0 abut directly against the forward 0r toe portion 44 0f the presser-foot, while the rearward guid.e 81 is adapted to abut direotly against the left-hand marginal edge of the tail portion of the presserfoot, thereby accurately 120 position the presserfoot so that lt cannot move in a left-hand directi0n. Cooperating with the guide elements 86 and 81 ls a 1;hircl guide element 90 which is secured directly the throat-plate 28 by means of a lock-screw 9I which is threaded directly within an aperture 92 provided in the throat-plate 29 in a manner as is best disclosed in Figs. 2 and 3. The screw 9l passes through an enlarged aperture 93 provided in the block 90 so as to permia the block to be shifted laterally of the direction of feed so that the block may cooperate with oho elements 86 and 81 in locking the presser-foot in a fixed lateral position. In other words, the guide elements 86 and 87 each engages the leithand edge while the guide 90 engages the righthand edge of the presser-foot thereby to determine a fixed position for the presser-foot so that the latter cannot move laterally and thereby disturb the proper relationship between the upper cord guide 52 and the reciprocating needle II. By means of their locking and positioning screws, each of the guide elements 85, 87 and 90 may be shifted laterally of the direction of feed so as to alter the position of the presser-foot to suit The needs of any one particular job. It should be understood, however, that the guides 88, 8! and 90 do not in any way interfere with the vertical movements of the presser-foot, which movements are produced by the usual feeding action.

The tape 24, with its upper and lower cords 25 and. 25 secured to the right-hand edge portion thereof by means of overedge stitches, is fed away from the stitching mechanism by means of the feed mechanism 20 and the presser-foot 22, and in order to insure that the finished tape will be properly delivered away from the sewing machine the table 14 may be provided, if desired, with a specia1 tape-pulling mechanism which is generally designated by the numeral 95.

This tape-pulling mechanism forms no part of the present invention and thus it is sufficient to state that it is provided with a pair cf feed rollen of which on1y the upper roller 95 is illustrated in Fig. 1. These feed ro11ers are adapted 130 be rotated in opposite directions so as to pu1l the tape away from the stitching area. The uppe1 and 1ower feed rollers may be driven in a conventiona1 manner by suitable mechanism actuated by a belt 91 which may be trained over a conventiona1 balance wheel pul1ey 98 provided upon the sewing machine proper.

Having thus sei; forth the natura of the invention, what we claim herein is:

1. In a sewing machine for producing a beaded edge tape for separable fastener stringers and having stitch-forming and work-feeding means, work-supporting means, and a presser-foot disposed above said work-supporting means and cooperating wi'uh the work-Ieecling means; the combination therewith of means for direcirw tape beneath the presser-foot and toward the stitch-forming means, and a pair of guides for guiding a pair of cords toward the stitch-forming mechanisrn with one cord disposed above am! the other cord below the tape and With both cords at one edge portion of the tape whereby both cords will be stitched to the tape in one line f stitching, one of said guides being carried upon and mounced for adjustment laterally of ehe presser-foot, while the other guide is adjustably carried upon the Work-supporting means a1: a location directly beneath the other guide for movement laterally of the presser-foot.

2. In a sewing machine for producing a beaded edge tape for separable fastener stringers and having stitch-forming and work-feeding means, work-supporting means, and a presser-foot disposed above said work-supporting means anal cooperating With the work-feeding means; the combination therewith of a throat-plate mounted upon the work-supporting means anti beneath oho presser-foot for adjustment laterally o1 the i resser-foot, means for directing a tape between the presser-foot and said throat-plabe and toward the stitch-forming means, and a pair of guides for directing a pair of cords toward the stitch-forming mechanism with one cord disposed above and the other cord be1ow the tape and With both cords at one edge portion of the tape whereby booh cords Will be stitched to the tape in one line of stitching, one of said guides being carried upon and mounted for adjustment laterally of the presser-foot, while the other guide is carried directly upon said throatz-plate ab a location direccly beneath the other guide so as to be adjustable therewith laterally of the presser-foot.

3. In a sewing machine ior producing a beaded edge tape for separable fastener stringers and having stitch-forming and workfeeding means, worbsupporting means, and a presser-foot disposed above said worksupporting means and cooperating With the work-feeding means; the combination therewith of a throat-plate mounted upon the work-supporting means and beneach the presser-foot for adjustment lateral- 1y of the presser-foot, means for directing a tape between the presser-foot and said chroao-plate and towarci the s'vibch-forming means, a pair of guides for directing a pair of cords toward the the stitch-forming mechanism with one cord disposed above and the other corcl below the tape and with bosh cords at one edge portion of the tape whereby both cords Will be stitched to the tape in one line of stitching, one o1" said guides being carried upon and mounted for adjustment laterally of the presser-foot, while the other guide 15 carrid directly upon said throat-plate a1; a location directly beneath the other guide so as to be adjustable therewith laterally of the presser-foot and an abutment element carried upon said throat-plate for engagement with a side portion of the presser-foot thereby to meintain the latter in a proper lateral relation with respect to the stitclnforming mechanism.

4. In a sewing machine for producing a beended edge tape for separable fastener stringers anti having stitch-forming and worla-feeding means, a work-supporting throat-plate, and a presser-foot disposed above said. throat-place and cooperating with the work-feeding means; the combination therewith of means for directing a tape beween the presser-foot and. the throat-plate and toward the stitch-forming means, a pair of guides for guiding a pair of cords toward the stitch-forming mechanism with one cord disposed above and the other cord below the tape and with both cords a1: one edge portion of the tape whereby both cords will be stitched to the tape in one line of stitching, one of said guides being carried upon and mounted f01 adjustment laterally of the presser-foot while the other guide is carried directly upon the throat-plate and directly beneath the other guide, and an abutment element and a secondary tape-guiding element eaoh mounten]. directly upon and for lateral adjustment relative to the throat-plate, said two elements being adapted for engagement respectively Wit-h a side portion of the presser-foot and an edge portion of the tape thereby to maintain the pressen-foo and the tape in proper lateral relation wit-h respeot to the stitch-forming mechanism.

5. In a sewing machine for producing a beended edge tape for separable fastener stringers and having stitchdorming means including a reciprocable needle, work-feeding means, work-supporting means, and a presser-foot disposecl above saicl work-supporting means anal cooperating With the work-feecling means; the combination therewit-h of means for directlng a tape be neath the presser-foot ancl toward. the stitohforming means, a pair of guirles for clirooting a pair of corcls toward the stitch-forming mechanism With one cord disposed above anti the other cord below the tape and with both cords at one edge portion of. the tape wnereby both oords will be stitched to the tape in one line of Stil-Ching, a first one of saiol guicles being carriecl upon the presserfoot so as to be adjustable laterally thereof, the free end portion of saicl first guide being loifurcated to define a passage for the .needle, and the other o1 said guides being mounted upon the work-supporting means directly beneath the other uide for lateral adjustment rel ative to said latter means.

6. In a sewing machine for proclucing a beaded edge tape for separable fastener stringers anal having stitchforming means including a reclprocable neeclle and an overedge looper, Workfeeding means, work-supporting means, ancl a presser-foot located above said work-supporting means anal cooperating with the work-feeding means; the combination therewith of means :"or directing a tape beneath the presserfoot ancl toward the stitch-forming means, and a pair of guides for directing a pair of corcls toward the stitch-forming mechanism with one cord disposed above and the other cord below the tape and. With both cords at one edge portion of the tape whereby both cords Will be stitche-d to the tape in one line of stitching, a first one of said guides being carried upon the presser-foot and being formed substantially as an elongated tube having a bifurcated free end portion which is disposed within the path of needle reciprocation and beneath the path of movement of the everedge looper so as to define a passage for the needle and to function as a chaining-off lnger,

while the other guide is carried upon the workhaving stitch-forming means including a reciprocable needle and a overedge looper, work-feeding means, work-supporting means, and a presser-foot disposed above said work-supporting means anti -cooperating With the work-feecling means; the combination therewith of means for direeting a tape beneath the presser-foot and. toward the stltch-forming means, a pair of guides for direeting a pair of cords toward the stitchforrning mechanism With one oord disposed aloove and the other cord below the tape and With both cords ab one edge portion of the tape whereloy both cords will be stitched t'o the tape in one line cf stitching, a first one oft said guides heilig carried upon anal mounted for lateral aoljustment relative to the presser-foot and being formed substantially as an elongated tube having a bifurcated free end portion which is disposed Within the path of needle reciprocation and beneath the path of movement of the overedge looper so as to define a passage for the needle and to funotion as a chaining-off fingen while the other guide is carried upon and mounted for lateral aoljustment relative to the work-supporting means at a looation directly beneath the other guicle, and. a finger depenoling from said first guicle for engaging an edge portion of the tape thereby to position the tape relative to the stitching mechanism.

8. In a sewing machine for proclucing a beaded. edge tape for separable fastener stringers and having stitch-forming means including a reciprocable neeolle ancl an overedge looper, Workfeeding means, work-supporting means, and a presser-foot disposed above said work-supporting meang ancl cooperating with the work-feeoling means; the combination therewith of a throatplate mounted upon the Work-supporting means for adjustment laterally of the presser-foot, means for directing a tape between the pressenfoot and said throatplate a pair cf guides for directing a pair of corcls towarol the stitch-forming mechanism with one cord olisposed above and the other cord below the tape and with both cords at one edge portion of the tape whereby both corols Will be stitched. to the tape in one line of stitching, a first one of said guicles being carried upon the presser-foot and being forrned substantially as an elongatecl tube having a bifurcated free end portion which is disposeol with in the path of needle reciprocation anal beneath the path of movement o1 the overedge looper so as so define a passage for the needle ancl to innotion as a chainingofi finger, while the other guide is carriecl upon said throat-plate at a location beneath the other guide, ancl an abutrnent element and a secondary tape-gruiding element each mounted direetly upon and for lateral adjustment relative to said throat-plate, said two elements being adapted for engagement respectively With a side portion of the presser-foot ancl an edge portion of the tape thereloy to maintain the presser-foot and the tape in proper lateral relation With respect to the stitch-forrning mech anism.

9. A sewing machine attachment including a presser-foot having an elongated so1e portion with upper and under surfaces, and a cord-guiding element carried by said sole portion; saicl cord-guiding element including a base memloer secured upon the upper surface of said sole portion, and an elongated cord-guioling tube oar ried upon said base member aoljacent one sicle of saiol presser-foot With the entrance and delivery ends of said tube disposeol respectively at the upper ancl under surfaces cf said presser-foot, the delivery end of said tube having a bifurcation providing a needle-receiving passage intersecting the longitudinal axis of said. tube and ha-ving its center lying in a plane disposecl at right angles to the upper surface of saicl presser-foot.

References Citetl in the file of this patent UNITED STATES PATENTS Number Name Date 264,817 Behringer Sept. 19 1882 366,147 Brook: et al. July 5, 1887 561,043 Borton May 26, 1896 1182279 Karle May 9, 1916 1605913 Rates Nov. 9 1926 1916171 Karla June 27, 1933 2 093 665 Karla June 4, 1935

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