US683902A - Seam for sewed articles. - Google Patents

Description

No. 683,902. Patented out. a, |'9o|. H. A. BLANCHARD.

SEAM FUR SEWED ARTICLES.'

(Application led Sept. 8, 1899. Renewed Feb. 28, 1901.)

(No Model.)

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UNITED STATES PATENT GEEICE.

HELEN A. BLANCHARD, OF PORTLAND, MAINE.

SEAM FOR SEWED ARTICLES.

SPECIFICATION forming part of Letters Patent No. 683,902, dated 0ctober 8, 1901.

Application iled September 8, 1899. Renewed February 28, 1901I Serial No. 49,299. (No model.)

To all whom, t may concer-n.-

Be it known that I, HELEN A. BLANCHARD, of Portland, Cumberland county, State of Maine, have invented a new and useful Improvement in Scams for Sewed Articles, of which the following is a specification.

My invention has reference to fabrics and the manner of uniting and overedging same; and it consists of features fully set forth in the following specification and accompanying drawings, forming part thereof.

My invention relates more specifically to knitted fabrics, such asunderwear; and it consists of an expandible loop or series of loops made from a single thread in su ch a manner as to make the fabric yielding at the seam. The loops, aside from being expandible and overedging, are, of course, fabricuniting. The sewing is done while the two pieces of fabric to be united are in lateral contact. They are then turned endwise, the thread while so turning slipping through the needleholes to a degree permitting this endwise fabric extension.

In the drawings like parts are referred to by marks or gures of a corresponding character in the diiferent views.

Figure 1 is a plan view of my fabric while the sides are in lateral contact. Fig. 2 is a plan vieW of my fabric with the united fabric ends endwise extended. Fig. 3 is a section on line a: of Fig. 1. Fig. 4 is a bottom plan of my fabric and stitch spread out. Fig. 5 is a transverse section through the fabric with the stitch spread out and the fabric endwise extended. 100 is the upper and 101 is the lower portion of the fabric to be united. Fig. 6 is the first operation in my stitch formation, and Fig. 7 the second.

In forming this stitch I employ two needles and a single thread. The thread is normally held across the path of the needles while descending. The holes formed by the needles While descending are shown at t' and t'.

The mechanism or means I employ in pracn tice to unite fabric ends and form my stitch bears no relation to the invention here 'set out, as this invention relates specifically to the fabric statically in its relation to lthe manipulation of the thread.

E is what I term the fabric end of the thread, and A is the spool end thereof. In

Vthe position of loop Z'.

the manipulation of the thread to carry out my invention I employ two needles. The dotted lines n and n', Fig. 6, show the position of these needles vertically. In addition to these needles, however, I employ supplemental thread-manipulating mechanism; but the description of any mechanical means for this thread manipulation is not essentialhere, as is manifest. In their downward movement the needles form two loopsland Z. The two ends of the fabric which are thus penetrated and through which the needles are thereby carried are shown at 100 and 101. The loop Z is of greater length than the loop l', and the needle n must be of corresponding greater length than the needle n. The thread and fabric are thus both relieved from stress during subsequent manipulation of the thread. The loop l, after fabric penetration, as above described, is pushed toward Z or swung in the line of the dotted arc O until it coincides with These loops are then further extended as a common loop. (Shown best in Fig. 7.) It will be observed that these loops j ust described are under-fabric loops, so to speak. The loop C (best shown in Figs. 6 and 7) is then carried to the edge of the fabric and passed through the compound loop formed by the loops l and l. lThis completes the operation of a single stitch formation. In subsequent stitches, which of course are necessary in the function of sewing, the operation is repeated--that is, the spool end of the thread A is again thrown in the path of the needles aforementioned, and the loopC of the stitch just described is chained to its successor on or near the edge of the fabric, thus overedging the same-that is, covering the edge thereof, as shown in Fig. 2. It is hardly necessary to say that B is the thread on the top of the fabric and D is the thread on the under side thereof. After uniting the fabric ends as above byseparating the same and extending the ends in endwise alinement the loose manner in which the stitch is formed permits of the slipping of the thread through the holes t' and t', and the united edges are covered, as shown in Fig. 2.

Having now described my invention, what I claim as new, and desire t0 secure by Letters Patent, is

1. As an improved article of manufacture on the line of fabric union, thus overedging the same, as and for the purpose set forth.

2. As an improved article of manufacture a fabric having its ends united by a single thread formed into two fabric-penetrating loops of unequal length and an over-fabric loop formed from the same thread, the two former loops being chained to the latter and the said chaining being on the line of fabric union, thus covering the same, as and for the purpose set forth.

3. Afabric'having its opposite edges united by a thread formed into a plurality of loops extending through the joined edges of the fabric and placed together below the fabric forming a common loop', and a loop formed from the thread above the fabric which is engaged with Athe common loop on the line of fabric union, thereby covering the saine.

In testimony whereof I have hereunto set my hand, this 22d day of June, A. D. 1899, in the presence of two Witnesses.

HELEN A. BLANCHARD.

Witnesses:

HOMER A. HERR, JOSHUA R. MORGAN.

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