US1128920A - Ornamental-stitch sewing-machine. - Google Patents

Description

V. J. VAN HORN.

ORNAMENTAL STITCH SEWING MACHINE.

APPLICATION FILED PEBJB, 1911.

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Patented Feb. 16, 1915.

Patented Feb. 16, 1915.

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1o letters and figures of reference s raariss ra rnnr airmen VANDIVIER J. VAN HORN, OF CHICAGO, ILLINOIS, ASSIGNOR TO UNION SPECIAL MACHINE COMPANY, OF CHICAGO, ILLINQIS, A CORPORATION OF ILLINOIS.

OJRNAMENTAL-STITCH SEWING-MACHINE.

Application filed February 13, 1911.

To all whom it may concern:

Be it known that I, VAnmvnR J. VAN HORN, a citizen of the United States, residing at Chicago, in the county of Cook,

a State of Illinois, have invented certain new and useful Improvements in Ornamental- Stitch Sewing-Machines, of which the following is a description, reference being had to the accompanying drawing and to the marked thereon.

The invention relates to new and useful improvements in ornamental stitch sewing machines of the type shown in my co-pending application, Serial No. 373,069, filed May 11th, 1907.

An object of the invention is to provide a sewing machine having a plurality of stitch-forming mechanisms, with devices for 0 guiding an ornamental thread, and for forming said ornamental thread into oppositely disposed loops, one of which is larger than the other, and which loops are secured to the surface of the material by a plurality i of needle stitches.

A further object of the invention is to provide a sewing machine having devices for forming oppositely disposed loops in an ornamental thread, one of which is larger than the other, with devices for manipulatobvious, and will in part be hereinafter more fully described.

In the drawings which show by way of illustration one embodiment of the invention, Figure l is a front view of the fort0 ward end of a sewing machine havingmy improved mechanism applied thereto; Fig. 2 is a detail view showing the position of the thread hooks and the thread-carrying arm when forming the enlarged loop in the ornamental thread; Fig. 3 is a similar view,

showing the position of the thread hook immediately following the dropping of the enlarged loop; Fig. 4 is a View similar to Fig. 2, showing the position of the parts when the needle is entering the small loop; Fig.

5 is a detail view showing my improved form of hook; Fig. 6 is a sectional view through the presser foot, showing diagrammatically the work support and feed dog;

Fig. 7 is an enlarged detail view, showing Specification of Letters Patent.

Patented Feb. 16, i915.

Serial No. 608,366.

the position of the enlarged loop after being dropped by the hook, and the manner -of guiding the same by the presser foot; Fig. 8 is a detail view showing a modified form of my hook; Fig. 9 is a plan view of the arm for supporting the thread-engaging device.

The work support 1, the overhanging arm 2, the needle lever 8 and the needle bar 1 are of the usual construction, and will not need further description. Said needle bar carries in the present embodiment of my in vention, two needles 5 and 6, which are spaced slightly so as to form on the upper surface of the fabric two parallel lines of stitching. Suitable stitch-forming mechanism may be provided for cooperating with the needles beneath the material.

The presser bar 7 carries a presser foot 8 at its lower end. This presser foot is provided with two needles slots 9 and 10, which are connected together, and are separated by a rearwardly projecting portion 11, which extends between the needles.

A. thread-guiding arm 12 is provided for the ornamental thread. This thread-guiding arm is carried at the lower end of a shaft mounted in a bracket 13, secured to the head of the machine. Said shaft carries a projecting arm 14 connected by a link 15 to a depending arm 16, carried by a sleeve 17, which may be oscillated by any suitable mechanism, and thus impart to the thread arm 12 a backward and forward movement. Said thread arm 12 as shown more clearly in Figs. 2, 3 and 4, is bent laterally at its forward end, which lateral portion is curved about the axis of the supporting shaft, so

that said lateral portion may swing between the needles 5 and 6. This thread arm at its free end carries a thread-guiding eye 18. A thread-guiding wire 19 may also be provided for guiding the thread along the upper face of the thread arm 12. The thread after leaving the thread wire 19 may be we passed through a suitable thread guide 20 in the upper end of the needle bar.

Cooperating with the threadcarrying arm 12 is a thread-engaging device 22, which is carried by a downwardly projecting 1oz shank 23 supported on an arm 24, pivoted at the rear of the machine (see Figs. 1 and 9). Said arm may be vibrated by any suitable mechanism, so as to oscillate the threadengaging device 22 back and forth in front no of said needles, and underneath the path of movement of the thread-guiding eye 18. Said thread-engaging device 22 at its lower end is provided with two thread-carrying hooks 26 and 27.

The thread engaging device 22 and the thread-guiding arm 12 are so timed that first the hook 26 and then the hook 27 will engage the ornamental. thread between the guiding eye 18 and the material.

As shown in Fig. 2, the ornamental thread is around the hook 27 and the movement of said hook is such that the needle 5 will enter between the threads forming the loop on the hook. When the thread carrier 22 is in the position shown in Fig. 4, the ornamental thread is around the hook 26, and the position of this hook is such that the needle 6 will enter between the threads of the loop formed by said hook. As clearly shown in Figs. 2 and 4, the hook 27, moves much farther to one side of the needles than the hook 26. The result of this movement of the hook 27 is that a larger loop is formed in the ornamental thread. The hook 27 is also much longer than the hook 26. The purpose of this long hook 27 is to support the slack forming this enlarged loop in the ornamental thread and retain said slack so that it may be properly positioned relative to the needle, and, furthermore, to aid in keeping the slack loop out of the path of the hook 26, as it moves forward to engage the ornamental thread extending between the thread guide 18 and the fabric.

As clearly shown in Figs. 3 and 7, the needle slot 9 in the presser foot is slightly enlarged directly in front of the needle, and this cut out portion of the presser foot, together with the projecting tongue 11, which tapers downwardly toward the bottom of the foot, as shown in Fig. 6, and also the long hook 27, will cooperate in positioning this enlarged loop and guiding the same, so that as the feed of the fabric occurs, said loop will be carried forward and properly located so that the needle 5 will enter twice into said loop. The needle 6 will enter only once into the loop in the ornamental thread formed for said needle, by reason of the fact that the loop drawn out by the hook 26 is much smaller than the loop formed by the hook 27.

' As shown in Fig. 8, the book 26 is provided with a shoulder 28 which is located adjacent the beak of the hook.

In Fig. 7, I have shown the presser foot "broken away to show the formation of the ornamental stitch. In this figure, c, c, repre- 1senttwo needle punctures which are made at the same timeby the needles 5 and 6.

0, 0,"represent a second pair of needle punctures It will be seen that the needle punctures 0 and 0 formed by the needle 5, both enter-the enlarged loop a, while the needle puncture c of the needle 6 passes between two consecutlve loops in the ornamental thread, one of whlch loops IS entered by a needle puncture 0 formed by said needle 6. In the next descent of the needle the needles are indicated by the circles 5 and 6, and the needles are above the material. The feed is taking place and the enlarged loop a having been dropped from the hook 27 is being guided by the cut out portion in the presser foot, and the tapered projecting tongue, so as to be presented under the needle 5, whereby said needle 5 will enter said loop.

In Fig. 6, I have shown a cross section through the presser foot, showing the loop in the ornamental thread as it is about to be carried forward by the feed dog, as it moves the fabric.

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

1. A. sewing machine including in combination, a plurality of needles, a device for guiding an ornamental thread, threadengaging devices for alternately engaging the ornamental thread between the guiding device and the material, and means for moving said thread-engaging devices, whereby oppositely disposed loops are formed insaid ornamental thread, one of which is much larger than the other.

2. A sewing machine including in combination, a plurality of needles, a device for guiding an ornamental thread, threadengaging devices for alternately engaging the ornamental thread between the guiding device and the material. and means for moving said thread-engaging devices, whereby oppositely disposed loops are formed in said ornamental thread, one of which is much larger than the other, said thread-engaging devices having means for retaining the slack thread in the enlarged loop.

3., A sewing machine including in combination, a plurality of needles, a thread carrier for guiding an ornamental thread, thread-engaging devices for alternately cooperating with said thread carrier for forming oppositely disposed loops in said ornamental thread, means for oscillating said thread carrier, whereby one of said loops is enlarged relative to the other, and means for guiding and positioning said enlarged loop, whereby it is presented a second time for the entrance of one of said needles.

4. A sewing machine including in combination, a plurality of needles, a thread carrier for guiding an ornamental thread, thread-engaging hooks, means for operating said thread-engaging hooks, whereby first one hook and then the other will engage said ornamental thread and form therein loops for the entrance of first one and then the other of said needles, one of said hooks being longer than the other, whereby the loop formed thereby is retained a longer time before being shed from said hook.

5. A sewing machine comprising in combination, stitch-forming mechanism, means for guiding an ornamental thread and fornr ing loops therein, including a thread-engag ing device having a plurality of hooks, one of which is longer than the other, whereby the loop formed by said long hook is retained thereon a greater length of time than the loop formed by the other hook.

6. A sewing machine comprising in combination, a plurality of needles, means for guiding an ornamental thread, a threadengaging device cooperating with said thread-guiding means, said thread-engaging device including a plurality of hooks, means for vibrating said thread-engaging device, whereby loops are formed first by one hook and then the other and one of said loops enlarged relative to the other, one of said hooks having a projecting shoulder adjacent the point thereof.

In testimony whereof I afiiX my signature, in presence of two witnesses.

VANDIVER J. VAN HORN. Witnesses:

GEORGE N. B. Lowns, EARL O. TURMEL.

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

Washington, D. 0.

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