US1095199A - Mechanism for embroidery-stitching. - Google Patents

Description

Y J. PINK. MEUHANISM FOR EMBROIDERY STITG HING. APPLICATION FILED J'AN.20, 1913.

1,095,1 99. Patented May 5, 1914.

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WITNESSES INVENTOR 1/ OH/V F7/V/I W M ATTORNEYS J. PINK. MECHANISM FOR EMBROIDERY STITOHING.

APPLICATION FILED JAN. 20, 1913.

Patented May 5, 1914.

2 SHEETS-SHEET 2.

INVENTOR c/U/l/V FIN/l WITNESSES A TTOHNE V S JOHN FINK, or NEW YORK, N. Y.

MECHANISM FOR EMBROIDERY-STITCHING.

Specification of Letters Patent.

Patented May 5, 1914.

Application filed January 20, 1913. Serial No. 743,049.

To all whom it may concern:

Be it known that I, JoHN FINK, a citizen of the United States, residing in the city, county, and State of New York, have invented a certain new and useful Improvement in Mechanism for Embroidery-Stitching, of which the following is a specification.

My invention relates to a novel mechanism for making a double embroidery stitch or seam of a particular type which will be hereafter set forth, comprising two parallel connected seams.

My invention relates more particularly to a combination of needles and a looper suit able for practicing my improved method.

The object of my invention is to provide a suitable arrangement of needles and a looper adapted to cooperate therewith, which arrangement may be applied to sewing machines of known type for the practice of the method and the making of the stitch to be described.

My invention will be better understood by reference to the accompanying drawings in which- Figure 1 represents an elevation, partly in section, of the sewing head of a machine as equipped with the mechanism of my invention; Fig. 2 represents an end elevation, also partly in section, taken from the left of Fig. 1; Fig. 3 represents a partial enlarged longitudinal sectional elevation through the center of the needle and looper holder showing the particular arrangement of needles and looper used in my machine; Fig. t represents a view similar to Fig. 3, but showing the needles and looper as positioned when the element of the stitch is more completely formed; Fig. 5 represents another view similar to Fig. 3 showing still a third stage of the formation of the stitch element, the looper driving mechanism being omitted; Fig. 6 represents a sectional plan view taken along the line 6-6 of Fig. 8; Fig. 7 represents a similar view taken along the line 7-7 of Fig. 4; Fig. 8 represents a diagrammatic view showing the position of the needles with relation to the stitch at a particular stage of its formation; Fig. 9 represents a perspective view of the needle nipple; and Fig. 10 represents a plan view, taken from the under side, of my improved stitch in one of its applications.

Referring to the drawings, the two needles and the looper are shown applied to a sewing machine ofknown type, and my invention relates in no way to said mechanism.

In the prior art, for the production of embroider'y stitches, sewing machines have been employed having two needles and a looper, but in such cases, the needles have either been two hooked needles or two sewingneedles. The looper also has been constructed differently from the looper herein to be described and has acted upon the thread in a different manner. The mode of operation of the combined needles and looper has therefore been different from that which is now to be described.

In the drawings, 1 represents a hooked needle or a needle provided with a hook 2 at lts end, while 3 represents a sewing nee dle provided with the usual elongated hole 4 near its end for the insertion of a thread. These two needles are arranged and held (by set screws) side by side in a holding member 5 adapted to reciprocate up and down in the sewing head; the lower end of the needles passes through a tube 5 also adapted to reciprocate, at the bottom of which is removably held a nipple 6. This nipple is provided with a central hole 7 through which passes the hooked needle, and with a. lateral slot 8 in which lies the sewing needle. By using a slot 8 instead of merely a hole as has been previously done in the art I am enabled to thread the sewing needle much more easily and quickly.

At the top of a rotatable spindle 9, held in the frame of the machine below the bed 10 thereof and in alinement with .the member 5, 1s a looper 11. This looper comprises an elongated base member 12 having parallel sides adapted to fit between and slidably engage the walls of a recess 13 at the top of spindle 9; a clamp 14- attached to a rod 15 passing through the center of spindle 9 rests upon the top of base member 12 and is adapted to be held fast by a nut-16 at the bottom. Extending upwardly from the base 12 is an arm 17 terminating a short distance below the upper surface of the machine bed 10 and having upon its end a horizontally disposed fork shaped member 18 comprising an outer sharp and circularly curved hook 19 and an inner blunt finger 20, the hook and finger thus including a notch between them.

At the inside of the sewing needle just above the hole 1 is formed a depression 21 and the shape of hook 19 is so determined and both the looper and the sewing needle are so located that when said needle is at the proper height, the looper, if rotated, will cause the hook 19 to fit the depressionv 21 as it passes the needle.

The two needles 1 and 3 are arranged in .the sewing head of the machine in such a way that, in the operation of the machine, the needles are simultaneously lowered and raised. In the same way, the spindle 9, to which the looper 11 is attached, is rotated by means of the worm 22 at the bottom of said spindle and the worm 23 attached to reciprocating shaft 24.

The feed is accomplished by means of the tube 5 with its nipple G and by a presser foot 25 provided with a circumferential rubber ring 26. This presser foot in a forward position, clamps fabric 27 upon the bed 10, moves to the rear carrying the fabric with it, is then lifted, carried forwardly and again clamped upon the fabric, and the operation repeated. While the presser fcotis down the nipple 6 is up and vice versa. This motion of the presser foot takes place at spaced regular intervals in correspondence with the operation of the needles and the looper, as will be hereafter explained. The mechanism for operating the presser foot and tube 5 in the manner set forth, is usual in sewing machines.

The operation of my invention is as follows: The fabric being in position and clamped against the bed of the machine by the presser foot and the machine started, the reciprocating tube 5, carrying the needles, moves downwardly so as to push the needles through the goods into the position shown in Fig. 3. Simultaneously the looper is rotated by means of spindle 9 and brought into the position shown in the same figure. In this position the curved hook 19 lies in the depression 21 of the sewing needle. Continued operation of the machines causes the needles to rise slightly without appreciable further rotation of the looper so that the loop 28 of the thread onthe under side of the fabric widens somewhat owing to thefriction of the thread with the fabric as the needle rises.

' Further operation of the machine causes the looper to rotate rapidly, the curved hook 19 entering the loop, drawing it out and carrying its inner element 29 over the hook 2 of the hook needle. The mechanism of the machine is so arranged that this ortion of the rotation of the looper takes .p ace at a high speed as compared with the amount of upward motion of the needles. F urtheroperation of the machine causes the needles to be lifted-upwardly to above the fabric, when the presser foot will move the fabric backward, and then step forward and again clamp the fabric to the bed of the machine. The needles are then again pushed through the fabric and the looper completes its rotation to the position shown in Fig. 3. The

cycle of operations is then repeated. In the preceding operation, the hooked needle 1, after the loop element 29 has been placed in the hook 2 by the looper, draws the loop up through the fabric, and as the fabric is moved to the rear by the presser foot, pulls out the loop as shown in Fig. 8. When the needles move down through the fabric, the thread is carried by the sewing needle, down through said fabric, while the loop carried upon the hook needle will be left lying upon the top of the fabric. When the hook needle rises again it will bring with it a new loop and draw the same through the aforesaid old loop when the new loop will be drawn out by the feed which has been described.

As described, thestitch produced is as illustrated in Fig. 8, being a double line of stitching, one side of which comprises a row of chains'or loops with the stitching connected on the under side by cross elements. If preferred, this stitch may be modified by causing the cross elements to include, between themselves and the fabric, a bundle of threads 30 which may be colored, if desired; or, instead of threads, a cord or a bundle of threads or long fibers of any desired kind may be employed.

By loosening the nut 16, thereby releasing the clamp 14, the looper may be shifted in the recess 13. By employing different nipples 6 having hole 7 and slot 8 at different distances apart and by choosing a suitable nipple for the various positions of the looper, the double stitch may be widened or narrowed as taste or necessity may suggest.

As stated, the mechanism used for operating the needles and the looper in the manner set forth is all old and I make no claim to any part thereof. What I do claim and desire to secure by Letters Patent is the arrangement of sewing needle, hooked needle and looper set forth.

I therefore claim:

1. In an embroidery stitching machine, the combination of a hooked needle and a seW- ing needle side by side and adapted to be reciprocated vertically, and a movable looper provided with a single member which is arranged to engage the thread loop, draw out said loop and to finally enga e the loop with the hook of the hooked needle.

2. In an embrodiery stitching machine, the combination of-a hooked needle and a sewing needle held side by side and adapted to be reciprocated vertically, and a movable looper-provided with a single book which is arranged to engage the thread loop, draw out said loop and to finally engage the loop with the book of the hooked needle.

3. In an embrodiery stitching machine, the combination of a hooked needle and a sewing needle held parallel with one another and adapted to be reciprocated vertically and a looper having a single member which is arranged to move horizontally and enter the thread loop, then draw out said loop and finally to engage the loop with the hook of the hooked needle.

4. In an embroider stitching machine, the combination of a liooked needle and a sewing needle held parallel with one another and adapted to be reciprocated vertically and a looper arranged to rotate upon a vertical aXis and having a member which engages the thread loop at the sewing needle and then moves to the hooked needle, drawing out the thread as it moves, and engages the thread with the hook of said hooked needle.

In an embroidery stitching machine, the combination of ahooked needle and a sewing needle held side by side and, adapted to be simultaneously reciprocated vertically, the sewing needle being provided with a depression, and a looper consisting of a hook and finger said hook being adapted to be rotated continuously in the same direction so as to lie in the depression so as to enter the loop and draw the same out and engage it with the hooked needle.

6. In an embroidery stitching machine, the combination of a hooked needle and a sewing needle held side by side and adapted to be simultaneously reciprocated vertically, the sewing needle being provided with a depression, and a looper fixed to and adapted to be rotated about a spindle alined with said hooked needle said looper comprising a hook which moves into the depression as it passes the sewing needle thus entering the loop anddrawing the same but and engaging it with the hooked needle.

7. In an embroidery stitching machine, the combination of a hooked needle and a sewing needle held side by side and adapted to be simultaneously reciprocated vertically, a nipple provided with an axial hole and a lateral slot for guidingand spacing said needles, a spindle alined with said hooked needle and adapted to be rotated, a looper fixed to said spindle and comprising a hook adapted to enter the loop and draw the same out and engage it with the hooked needle,

and means for adjusting the looper as to the spindle so as to suit the distance between the needles.

8. In an embroidery stitching machine, the combination of a hooked needle and a sewing needle held side by side and adapted to be simultaneously reci-proeated vertically,

the sewing needle being provided With a depressi'on and a looper comprising a hook said looper being adapted to be rotated in a plane transverse to the needles so as to cause the hook to lie in the depression so as to enter the loop and draw the same out and engage it with the hooked needle.

9. In an embroidery stitching machine, the combination of a hooked needle and a sewing needle held side by side'and adapted to be simultaneously reciprocated vertically, the sewing needle being provided with a depression, a looper comprising a hook said looper being adapted to be rotated so as to cause the hook to lie in the depression, and means for continuously rotating the looper so as to enter the loop and draw the same out and engage it with the hooked needle.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

. JOHN FINK. Witnesses:

ELMER G. WILLYOUNG, I Fnrrz ZIEGLER, Jr.

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