US1136299A - Sewing-machine. - Google Patents

Description

V. l. VAN HORN.

SEWING MACHINE. APPLICATION FILED APR. I3. I9I4.

THE MORRIS PETERS C0., PHOTD-LITHO.. WASHINGTON. D. C

Patented Apr. 20, 1915.

V. l. VAN HORN. SEWING MACHINE.

AgLlcATloN min APR. 13. m4.

Paented Apr. 20, 1915.

3 SHEETS-SHEBT 2.

THE MORRIS PETERS C To-LITHO.. WASHINGTON, D. C

VAN HORN.

SEWING MACHiNE.

APPLICATION HLED APR. x3, |914.

Patented A131220, WM.

3 SHEETS-SHEET 3.

WIT/VESSES:

HE NoRRls FTERS co., PHOTO-LITHCL, WASHING TON. D. c.

Y VANDvIVER J". VAN HORN, 0F CHICAGO, LLINOIS. i

SEWING-MCHINE.

Application sied April 1a, 1914. serial No. 8315er.

T0 all whom t may concern.'

HORN, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Sewing-Machines, of which the following is a specification. l

The present invention relates generally to chain stitch sewing machines, and particularly to single chain machines, although some of its novel features are applicable to machines which make a stitch consisting of a plurality of chains.

One object of the invention is to provide a chain stitch machine that does not have or require any take-up mechanism, and this object is accomplished by so constructing the stitch forming mechanism that in the process of forming the chain the loop is not enlarged either by the loop holder or by any other mechanism, in order Vto permit the proper operation of anyv of the parts. Or, in other words, this object of the invention, c'. e., dispensing with a take-up, is accomplished by providing improved mechanism of such construction that it may be so ad justed that the nascent loop is not formed with an excess of slack thread over and above that actually required for forming a single stitch. This forming of the loop without an excess of slack and thereafter preventing such excess from being drawn into it are accomplished by giving the needle exactly the amplitudeV of movement required for forming the nascent loop after the preceding loop has been set and making the loop holder of such size in cross section that at no part does it enlarge the nascent loop as it passes through it, thereby. preventing the drawing into its formation of a length of slack needle thread in excess of that actually required in making the stitch and the accomplishing of these objects is facilitated by forming each loop and causing it to interlock or ninterloop with the next previously formed' loop as close to the wrong side of the work as possible; and

this latter object is preferably accomplished by providing a rotatable part, which is con centric with the loop holder (in the instance shown in the drawing), with a radially acting cast-off lug having an inclined surface that is located opposite, but out of contact with the heel of the loop holder and is adapted to engage the loop as it escapes from the heel of the loop holder and deflect 1t bodily toward the wrong side ofthe work. (By the wrong side of the work as used in this specification is meant that side which is opposite to the side on which the needle is located, whether the latter be located in customary vertical position above the work, or otherwise). Y

Another object of the invention is to hold the newly formed loop (which for the purpose of distinction is herein called the first loop, it being the iirst complete loop formed in the process of stitching) open, or distended, and in a position substantially parallel with the plane ofthe work in order to insurel the needles passing through it when it (the needle) descends and forms the y next nascent loop, drawing into it the exact length of thread necessary to form said next nascent loop; and to this end the castofl' lug aforesaid vterminates in a surface which is concentric with the axis of the driver or rotatable part by which the loop holder is driven, said concentric surface being of suilicient length, or circumferential extent, to hold the loop open and substantially parallel with the work, as aforesaid, long enough to allow the point of the needle to pass through it and draw down the length of thread necessary to compensate for thread taken up by the next preceding tightened or set stitch, this setting being accomplished in large part by the forward feeding of the work.

Another object of the invention is to pro- Vide improved means for driving a rotatable loop holder-or looper, or loop taker or shuttle, Vas similar parts are sometimes called. 'Y Y Another object of the invention is to proJ vide simplified and improved means for causing the (nascent loop to bow inward, from the inner side of the needle, Ain order to insurethe beak of the loop holders entering said loop between its inner side and the inner side `of the needle and thus avoid dropping stitches. (By inner side of the needle as herein used is meant that side which ordinarily is not grooved longitudinally, or, in other words, the side opposite that along which the spool thread passes to the eye of the needle.) ln order to accom plish this object the driver of the loop holder (which driver in that embodiment of they invention selected for the purposes kof this application, has the general form of a l' disk surrounded by and lying in the plane Via `of the needle, so as to engagethe outer side V-of the nascent loop and prevent the loop are made a frombowing outward while compelling it to "bow inward'.

Another object of the invention is to provide an improved needle guard the latter being aV technical term for`those variously constructed devices by which the needle is guarded or braced laterally for the purpose of preventing its bending laterally and this object, according to the present invention,

is accomplished by the use of a second guard coperating with the one first above -mentioned and bearing practically the same relation to the inner side of the needle as the .one first above mentioned does to the outer side, ofthe needle, excepting that the guard second above mentioned is not so high with reference to the amplitude of movement of the needle, the arrangement being such that just suliicient clearance for the needle is left between' the two guards. 1

' Y 1With these and other objects in view the v invention consists in the features of novelty 35- that are hereinafter described with reference to the accompanying drawings, which which:

Figure l is a sectional elevation of the head ofa sewing'machine embodying the invention, with the needle in its highest position, a fragment of the work having a seam comprising a chain madefof a number of loops interlocked or interlooped with each other being also shown and the parts being shown inthe positions necessary to continue theiroperation and continue the seam. Fig.

2 is a similar view on a larger scale of the major portion of the seam forming mechanism, with the needle in itslowest position and the nascent loop in process of formation. Fig. 3 is a view similar to Fig. 2, showing theneedle in the position which it l occupies after having moved upward a short distance from its lowest position and'showing the beakof-the loop holder just entering yceV lthe nascent loop between its inner side and the inner side of the needle, the inner side ofthe loop not being seen in this ligure becauseit is on the inner side of the needle `and yhidden thereby; Fig. 4 is an elevation similar to Fig. l, in so far as the seam forining mechanism is concerned, the parts being shownv by this figure' in the positions which Vthey occupy after the loop holder has made part of this specification, and in nearly a complete revolution in the direction of the arrow from the position shown in Fig. 3, and its heel brought to a position which allows the loop to escape from it, which takes place while the needle is moving downward, and after it has passed through the work but has not yet entered the previously formed loop. Fig. 5 is an elevation similar to Fig. 4 after the loop holder has moved a little farther and the loop has been cast olf of the heel of the loop holder and deflected to a position close to and substantially parallel with the wrong side of the work and there held distended while the point of the needle passes through it, carrying with it the thread for forming the next loop. Fig. 5'h1 is an enlarged detail of some of the parts shown in Fig. 5. Fig. 6 is a view similar to Figs. 4 and 5 after the loop holder has made a complete revolution from and again returned to the position shown in Fig. 3, the only difference between these two figures being that Fig. 3 shows the holder taking the first formed nascent loop and Fig. 6 shows it taking the last-formed nascent loop of a chain of stitch'es. Fig. 7 is a section on the line 7 7, Fig. 'i. Fig. 8 is a section on the line 8 8, Fig. 2, but on a reduced scale. Fig. 9 is a section on the line 9 9, Fig. 3, on the saine scale as Figs. l, 3, 5, 6, 7 and S. Fig. 9il is an enlarged detail of some of the parts shown in Fig. l). Figs. 10, ll and l2 are sections on the lines 10 l0, Fig. 5; ll ll, Fig. G; and l2 12, Fig. l, respectively. Fig. 13 is a perspective view of the loop holder on an enlarged scale. Fig. 14 is a sectional elevation of chain forming mechanism of modified construction, modiiied especially with respect to the means for driving the loop holder and the cast off lug. Fig. l5 is a section thereof on the line l5 l5, Fig. 14.

A, represents the enlarged cross-head of the horizontal arm (not shown) of the machine head which supports parts customarily so supported in many sewing machines, all of which parts may be of any desired construction or arrangement in so far as they are used in carrying out the present invention, since the present invention has nothing to do with any part of the machine excepting as it relates solely to the mechanism for forming the chain stitch. It may be here observed, however, that a machine having a chain-forming or seam-forming mechanism constructed in accordance with the present invention does not have or require any take-up, because it does not have any mechanism that will draw to and maintainrat a point between the last stitch and the spool a length of thread that takes the form of a slack loop, which length is in excess of the length that is taken up by the needle itself as it descends and simultaneously tightens the last stitch and draws from the spool the exact length of thread necessary for the next stitch. It logically follows that in the absence of this excess of thread over and above what is actually necessary to form a single stitch, there will be no slack to be taken up, and therefore no need for a take-up This is the premise upon which one important part of the present invention is founded.-

n carrying out the invention, after leaving the spool, which may be located in any convenient or desired position,the thread passes over suitable guides, as B, to atension device, as C, and thence over suitable guides, as D, to the eye of the needle E. F, is the presser foot; G, the serrated feed dog to which the customary up and down and to and fro movements are imparted by mechanism of any desired construction and H is the throat plate, all of which parts may be of any desired construction and mode ofoperation, so long as they will enable the carrying out of the invention.

The work is shown at l, and J is a seam, this term being used in this specification as meaning a number of chain stitches, j, comprising a number of interlocked or interlooped loops, the thread of the last-formed stitch, j', being a continuation of that portion, m, of the spool thread which lies upon the inner side of the needle and extends from the work to the eye of the needle. ln other words the thread passes from the spool over the guides, B, to the tension, C, thence over the guides, D, along the outer side of the needle to and through the eye and thence. to the last completely made and tightened or set stitch of the seam.

In Figs. 2 and 3 neither the seam, nor even a single stitch, is shown because, these figures are intended to illustrate in its nascent or formative state the very first loop which is formed at thebeginning of the sewing operation. To this end the loose end, of the thread is held taut and the needle moved .downward to its lowest position, as shown in Fig. 2. In moving downward the needle penetrates the work and after the top side of the eye of the needle comes to a firm bearing on the thread at the bight between the two portions :e and w which lie on opposite sides of the needle and extend from the eye to the work, draws the spool thread down with it. As will appear hereinafter, this drawing down of the thread has the double function of drawing from the spool the exact length of thread necessary for a single stitch., and also of tightening or setting the last made stitch in the work. lThis downward movement of the needle forms a loop, which is herein called the nascent loop the opposite sides m and of which lie against the opposite sides of the needle, respectively. As the needle moves upward from its lowest position (the frictionl of the work with the thread at the portions where it passes through the work preventing it from following the needle upward) that portion of the thread which exural tendency is counter-acted by a guard,

9, which lies close to that portion x of the thread which extends along the outer side of the needle and prevents it from bowing in thisdirection, while at the same time it willforce or feed thev Vbight of the loop through the Veye of the needle and cause the loop to bow inward from the inner side of the needle. This spreads or distende the loop and permits the beak, l, of the rotatable loop holder', 2, to enter the loop, moving close to the inner side of theneedle, thus avoiding the possibility of skipping or drop ping stitches. A second guard, 9b, which is similar to the guard,9a, excepting that it is not so deep, or so great in radial extent, as the guard, 9a, withl respect to the amplitude of movement of the needle, both guards being formed with and carried by the driver, 9, hereinafter described, cooperates with the guard, 9a, and braces and sustains the needle as against lateral deflection, just suiiicient space for the clearance of the needle being left between the guards.

As' shown in Fig. 13 the loop holder is in the form of a segment of a circular ring. lts outer surface is flat and lies in a single plane throughout, while its inner surface is cut away as shown at 3, so as to reduce the cross sectional size of the beak, thereby enabling it to enter the loop with greater certainty. Excepting for the cut-away portion, 3, the loop holder' is of substantially rectangular shape in cross section through out, and its inner face is of uniform and continuous, in rear of its point, or size in cross section, which latter does not exceed the size of the loop which it is to enter and pass through. The size of the loop is determined by the length of the individual stitches and the making of the loop of this exact size depends upon the travel of the needle and the feed dog. To be more specie, if for example a stitch of of an inch is to be made, the amplitude of downward movement of the needle after the top side of its eye comes to a bearing upon the bight of the nascent loop, must be 6112 of an inch. As the needle moves upward from lthis position to the position shown in Fig. 3, thenascent loop will be spread or distended as shown in Figs. 9 and 9a, and thereafter the beak, l, of the loop holder will enter the loop between its inner side w and sol y in doing so the loop will beV still further lconcentric with the loop holder.

spread -or distended, or more strictly speaking, the needle will slide upward on that portion of ,the thread which lies against its outer surface and thereby remove from the loop that portion of the, needle thread which lies above its eye and between the two sides of the loop. This will leave the loop unobstructed and of sufficient size to permit Ythe'main` body portion of thed loop holder to enter and pass through it, as 'shown more clearly in Figs. 1 and 12, but this also is` accomplished without'enlarging o the loop. As the loop holder continues to move in the direction of the arrow, its heel, 4, will'pass out of the loop and leave the loop free, 'as shown inrFig. 4. It is then engaged by the inclined surface 5, of-a detlecting lug, 6, which is located opposite, but out of contact with the heel, 4, of the loop holder. The inclination of the surface 5 is such that it will act radially upon the loop and deflectit toward the wrong side of the work,'thus bringing the loopV to a vposition close to and substantially parallel withgthe work. During the time that the loop holderV ispmaking a partial revolution from the position shown in Figs. 3 and 6, to

that shown in Fig. 1, the needle is Vmoving upward to its highest position and while the loop holder is moving from the position shown in Fig. 1 to the positions shown in Figs. 4 and 5, the needle is moving downward. During this downward movement, the point of the needle after passing through the work, as shown in Fig. 4, will enter the previouslyV formed loop, as shown in Fig. 5, the distended loop being meanwhile held in its position substantially parallel with the work by a surface, 7, on the deiecting lug, 6, which surface, 7, is a continuation of the surface,5, and is concentric with the axis of movement of the loop holder. The poi nt of the needle thus takes the loop while the latter is still resting upon the surface, 7, and in order to permit this the lug, 6, has a peripheral groove, 8, which provides clear ance for the point of the needle. The deiieeting lug, 6, is carried by a revoluble part herein called a driver, the axis of which is In the embodimentof the invention shown in the drawings .this revoluble driver isY in the form of a disk9, which is encircled by and Vlies in the plane of the loop holder. This disk is non-rotatably secured to a shaft, 10, and has in its outer face a diametrically disposed groove, the side walls, 11, of which form guide ways for a reciproeable slide,

l12, the fit being free and easy so that the slide is capable of reciprocating between its guide-ways with but little friction. ln Figs. 14 and 15 this slide is shown as being formed of two parts rabbeted and overlapped at their meeting ends, but this two part construction has no real advantage over the one-part construction and is shown for the sole purpose of illustrating a modilication vlar to the sides of the slide which lie against the guide-ways, 11, and in this slot fits a non-circular block, 14, rotatably mounted upon a pin, 15, carried by the fixed face plate, 16, which confines the loop holder, 2, in place. The pin, 15, is located eccentrically with relation to the axis of rotation of the driver, 9,7so that while the block, 14, is free to rotate relatively to the pin, 15, it is nevertheless confined to a fixed angular position with relation to the axi's of rotation of the driver, and is, therefore, prevented from being carried bodily in a circular course as lhe driver, 9, revolves. With this arrangement it will be seen that as the driver, 9, revolves, the slide, 12, will be carried with it and will also be radially reciprocated back and forth between the guide-ways, 11. f desired the block, 14, may be omitted, as shown in Fig. 14, in which case the eccentric pin, 15, is made of the same diameter as the width of the slot, 13. The slide, 12, carries at its opposite ends plungers in the form of pins, 17, and 17 a, which are radial with respect to the driver, 9, and are adapted to be inserted in and withdrawn from perforations forming sockets, 18 and 18, respectively, which pass completely through the loop holder at diametrically opposite points. The arrangement is such that when the beak of the loop holder is about to enter the loop, the plunger, 17, will be completely moved inward, radially, and withdrawn from the socket, 18, so as to permit the loop to slip along the inner uniform face of the loop holder and escape past the plunger, 17. At the same time the plunger, 17, will be projected a greater or less distance beyond the periphery of the loop holder, the race plate, 19, being cut away as at 20, to permit of the free movement of the ends of the plungers as they are successively projected and retracted. rlhe race plate, 1:5), of the loop holder is permanently secured, as by screws, 21, to a fixed part of the machine head and the face plate, 16, is secured to the race plate as by screws engaging thread` ed openings, 22, in the race plate, or by any other suitable means. The race plate is of genera-l annular shape and the race way for the loop holder is formed by counterboring the race plate to provide an annular shoulder, 23, against which the inner face of the loop holder lits, so as to be easily slidable thereon. The clearance, 20, above mentioned, is provided by a second counterbore resulting in a second annular shoulder, Q4, which forms one side of a groove, 20, into which the pins, 17 and 17a, project, the opposite side of this groove being formed on the face plate, 16.

TVl/vhat l claim as new is:

1. In a sewing machine the combination with a thread-tension and means for supporting it, of a straight vertical needle, means for reciprocating it vertically through strokes of equal length, whereby at each downward stroke it will draw through the thread-tension a length of thread equal to that taken up in making the last preceding stitch and whereby, during each upward stroke that portion of the thread which is between the eye of the needle and the work will slacken, forming a loop, a loop-taking member movable in a circular path which intersects said loop, and means for producing one complete revolution of the loop-taking member during each reciprocation (including an up stroke and a down stroke) oit the needle, the maximum cross sectional size of the loop taking member being no greater than the size of the loop formed as aforesaid, whereby the loop-taking member in passing through the loop does not enlarge it and thereby draw thread through the tension.

2. In a sewing machine, mechanism for forming a chain stitch, having, in combination, a loop-taking member consisting of a segmental ring movable in a circular path, means for moving it, the means last aforesaid having a rotatable part lying in the plane of said segmental ring and having its axis concentric with the axis of movement of said segmental. ring, a rigid movable device carried by said rotatable part and located in the plane of said segmental ring, means for confining said movable device to rectilinear movement radially with respect to the axis of movement of the rotatable part carrying it, and means coperating with said rotatable part for moving said radially movable device into and out of engagement with said segmental ring.

3. 1n a sewing machine, mechanism Jfor orming a chain stitch, said mechanism having, in combination, a loop-taking member movable in a circular path, means for thus moving it, the means last aforesaid having a rotatable driver lying in the plane of the loop-taking member, a slide carried thereby and movable radially in a plane perpendicular to the axis of said driver and a fixed part, said slide and fixed part coperating with each other for reciprocating the slide endwise, radially with respect to the axis of rotation of the loop-taking member.

4. lin a sewing machine,`mechanism for forming a chain stitch, said mechanism having, in combination, a loop-taking member consisting'of a segmental ring movable in a circular path and means for thus moving it, the means last aforesaid having a driver rotatable about an axis concentric with the axis of movement of the loop-taking member, said driver having a lug provided with a radially acting cast-oli surface located opposite the heel end of the loop-taking memer. i

5. In a sewing machine, mechanism for forming a chain stitch, said mechanism having, in combination, a loop-taking member consisting of a segmental ring movable in a circular path and meansfor thus moving it, the means last aforesaid having a driver rotatable about an axis concentric with the axis of movement Vof the loop-taking member, said driver having a lug provided with a radially acting cast-off surface and also with a surface for supporting the loop in a positionV substantially parallel with Vthe Work. Y

6. In a sewing machine, the combination with. a needle and a loop-taking member movable in a circular path that intersects the loop formed by the needle, of a rotatable driver, the axis of which is concentric with the axis of movement of the loop-taking member, said driver having a guard, the working surface of which lies in a plane perpendicular to its axis of rotation and close to the outer side of the needle, said driver being cut away opposite said guard for permitting the loop to bow inward from the needle.

7. ln a sewing machine, mechanism for forming a chain stitch, said mechanism having a loop-taking member movable in a circular path, and means for thus moving said loop-taking member, the means last aforesaid having a driver rotatable about an axis concentric with the axis of movement of the loop-taking member, said driver having two guards located upon opposite sides of the needle and a suliicient distance apart to leave between them clearance for the needle, one of said guards being of greater radial height than the other.

8. In a sewing machine, mechanism for forming a chain stitch, said mechanism having in combination a loop-taking member movable in a circular path and means for thus moving said loop-taking member, the means last aforesaid having a driver located in the plane of the loop-taking member and rotatable about an axis concentric with the axis of movement of said loop-taking member, a radially movable rigid plunger carried by the driver and adapted to be moved into and out of engagement With the loop taking member and means for moving the Y plunger as aforesaid, said driver having means for moving it in a circular path, the

Y means last aforesaidhaving a driverrsurrounded by and located in the planevof the loop-taking member, a radially Vmovable rigid plunger also located in the plane of Ythe loop-taking member and adapted to be moved into and out -of'engagement there-j With, the driver having means for confining the plunger to radial rectilinear movement in a plane perpendicular to the axis of the loop-taking member, means for rotating the v driver and means for imparting movement from the driver to the plunger for moving the latter.

10. In mechanism for forming a chain stitch, the combination With a loop-taking member movable in a circular path, of means for thus moving it, the means last aforesaid having a rotatable driver, a slide movable radially relatively to the driver, guides carried by the driver and engaging the slide for confining it to radial movement, in a plane perpendicular to the axis of the loop-taking member, and means carried by the slide and adapted to `engage and disengage the loop-taking member.

11. In mechanism for forming a chain stitch, the combination With a loop-taking member, consisting of av segmental ring movable in a circular path about its axis, and means for thus moving it, the means last aforesaid having a reciproeable slide mounted on the driver, said driver having guides for confining the slide to radial movement and diametrically arranged plungers adapted to be moved into and out of engagement With the loop-takingmember. Y

12. In mechanism` for forming a chain stitch, the combination with a loop-taking member consisting of a segmental ring movable in a circular path concentrie'ivith its axis, of means for thus moving the loop-taking member, the means last aforesaid having a driver surrounded by and located in the plane of the loop-taking member and rotatable about an axis concentric therewith, radially disposed plungers carried by the driver, the loop-taking member having radially disposed sockets in Which said plungers are movable and said plungers being of sufficient length to extend completely through the loop-taking member, and means deriving its movements from the driver for reciprocating the plungers, said driver having means for conning the plungers to rectilinear movement in a plane perpendicular to the axis of the loop-taking member.

13. In mechanism for forming a chain stitch, the combination with a loop-taking member consisting of a segmental ring movable in a circular path concentric with its axis, of means for thus moving it, the means last aforesaid having a driver surrounded by the loop-taking member and rotatable about an axis concentric with the axis of movement of the loop-taking member, a reciprocable slide carried bythe driver and radially disposed plungers carried by the slide, the driver having guides for con lining the slide to rectilinear movements, the loop-taking member having diametrically arranged radial sockets extending through it and the slide having plungers adapted to be reciprocally inserted and removed from the oppositely located sockets, the plungers being of suflicient length to extend quite through the loop-taking mem ber and project beyond the periphery thereof.

14. In mechanism for forming a chain stitch, the combination With a loop-taking member movable in a circular path, of means for thus moving it, said means having a driver rotatable about an axis concentric with the axis of movement of the looptaking member, a slide carried by the driver, said driver having guides for confining the slide to rectilinear movements, means carried by the slide for engaging the looptaking member, means for rotating the driver, and a fixed pin disposed eccentrically relatively to the axis of rotation of the driver, and the slide being provided with means for permitting its lateral movement relatively to said pin.

15. In mechanism for forming a chain stitch, the combination With a loop-taking member movable in a circular path, of means for thus moving it, said means having a driver rotatable about an axis concentric With the axis of movement of the loop-taking member, a slide carried by the driver, said driver having guides for confining the slide to rectilinear movements, means carried by the slide for engaging the looptaking member, means for rotating the driver, and a fixed pin disposed eccentrically relatively to the axis of rotation of the driver, and a block rotatively mounted on said pin, said slide having a transverse slot in Which said block fits, whereby the slide is permitted to move laterally relatively to said pin.

16. In mechanism for forming a chainstitch, the combination of a loop-taking member consisting of a segmental ring, a race in which it is mounted to move in a circular path concentric with its axis, means for thus moving it, the means last aforesaid having a driver surrounded by and located in the plane of the loop-taking member and rotatable about an aXis concentric therewith, a slide carried by the driver and movable radially relatively thereto, the driver having guides for coniining the slide to movement in a plane perpendicular to the aXis of the driver, and means carried by the slide and adapted to engage the loop-taking member for driving it.

17. ln a sewing machine, in combination, a race member, a segmental loop-holder mounted to revolve in the race member, a rotatable driving member, a plurality of radially movable plungers actuated by the driving member, each positively engagable with'the loop-holder, and means for disengaging the plungers from the loop-holder successively.

18. In a sewing machine, in combination,

a race member, a segmental loop-holder mounted to revolve in the race member', and a circular revoluble member within the loopholder and having a loop-deflecting lug projecting in line with the rearward end thereof, the perimeter of the circular member being recessed in back of the lug.

19. 1n a sewing machine, in combination, a race member, a segmental loop-holder mounted to revolve in the race member, and a revoluble member within the loop-holder and having a slotted loopdeflecting lug projecting in line with the rearward end thereof, the revoluble member being laterally recessed back of the lug.

vANDivnn J. VAN' HORN.

l/Vitnesses:

L. M. HOPKINS, JOSEPH KRAUSE.

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

' Washington, D. C.

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