US862056A - Woven fabric. - Google Patents

Description

} PATENTED JULY so, 1907. J. K. DALKRANIAN.

WOVEN FABRIC. APPLIUATIOH FILED JULY 17, 1905. RENEWED JUNE 10. 190'!- d a a WITNESSES,

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UNITED STATES PATENT orrron.

JAMES KARMI DALKRANIAN, OF NEW YORK,

N. Y., ASSIGNOR, BY MESNE ASSIGNMENTS, TO

UNITED STATES PERSIAN CARPET COMPANY, OF NEW YORK, N. Y., A CORPORATION OF NEW YORK.

WOVEN FABRIC.

Patented July 30, 1907.

Application filed July 17, 1905, Serial No. 270,015- Renewed June 10,1907. Serial No. 378,284.

To all whom it may concern.-

Be it known that I, .TAMEs KARMI DALKRANIAN, a citizen of the United States, and a resident of the city of New York, borough of the Bronx, in the county and State of New York, have invented new and useful Improvements in Selvages for Woven Fabrics, of which the following is a full, clear, and exact description.

The object of the invention is to provide a certain new and useful improvement in selvages for fabrics notably woven pile fabrics of the oriental rug type.

The invention consists essentially in a selvage having a selvage ground warp, and a selvage binding warp interwoven transversely with the said selvage ground warp and interlooped with the binding weft of the woven fabric.

The invention also consists of novel features and parts and combinations of the same, as will be more fully described hereinafter and then pointed out in the claims.

A practical embodiment of the invention is represented in the accompanying drawings forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the views.

Figures 1, 2, 3, and 4, are enlarged plan views illustrating the several steps in forming the selvage; and Fig. 5 is an enlarged plan view of the finished fabric.

The body A of the woven fabric is provided-at each side with a selvage B, see Fig. 5, and consists of pairs of ground warp threads a, a, the pile threads b each interwoven with a pair of ground warp threads a, a in the form of a Persian knot, and the weft c interwoven with the ground warp threads a, a preferably for three consecutive picks between the adjacent rows of pile threads I), as will be readily understood by reference to Fig. 5. Each selvage B consists of a selvage binding warp thread 0?, and a selvage ground warp preferably formed of a plurality of threads 0, e. The selvage binding warp thread d is interwoven with the selvage ground warp threads 0, e in a transverse direction, and is twice interlooped with the end loop 0 of the weft thread 0. By reference to Fig. 5 it will be seen that the selvage binding warp thread a is doubled or passes twice over the selvage ground warp threads 6, e, and likewise is doubled or passes twice under the said sel vage ground warp threads e, e for each two picks, the inner loops d, d of the said doubled portions of the selvage binding warp thread cl, being interlooped with the same end loop 0 of the weft c of the fabric body A.

A separate yarn tube F is provided for each selvage binding warp thread d and this yarn tube F is mounted on a suitable loom, mounted to swing up and down and to be bodily shifted transversely by suitable mechanism. The selvage ground warp threads e, e

are arranged outside of the heddles D, D and extend approximately in alinement with the upper ground warp thread of the fabric body A, it being understood that the selvage ground warp threads 0, e are not shifted the same as the ground warp threads a, a, but simply unwind from a suitable warp beam arranged on the frame of the loom.

The body A of the fabric is woven by the loom in a manner more fully described in the application above referred to, and in order to simultaneously weave the selvage B, the selvage-forming yarn tube F operates in conjunction with the shuttle mechanism, but is practically dormant during the formation of the Persian knots by the pile threads 12. Thus, immediately previous to the passage of the shuttle through the open shed at the first pick the yarn tube F is in an uppermost position and is then shifted transversely and then caused to move downward between the innermost selvage ground warp thread 0 and the first adjacent ground warp thread a of the fabric body A as illustrated in Fig. 1. When the several parts are in this position, the weft thread 0 is passed in the direction of the arrow 90 through the open shed and over the selvage binding warp d in front of the yarn tube F, and then the yarn tube F is caused to move upward, after which the weft c is beaten in by the lay and returned to its normal rearmost position. The heddles D, D now change, for opening the shed for the second pick, and the yarn tube F is now shifted outwardly in a transverse direction, and then caused to swing downward outside of the outermost selvage ground warp thread 6, as plainly indicated in Fig. 2 While the yarn tube is in this position the weft c is passed through the open shed in a reverse direction, that is, in the direction of the arrow 00 to form the end loop 0 (see Fig.2), and then the yarn tube F is caused to rise and to move transversely in an inward direction and back to the first position above referred to see Fig. 3, and during this time the weft c is drawn taut so that the end loop 0 is interlooped with the two loops cl, d of the selvage binding warp thread d, as illustrated in Fig. 4. The yarn tube F is caused to descend immediately previous to the return of the next weft c at the third pick, it being understood that the weft c returns in the direction of the arrow 90 at the third pick (see dotted lines Fig. 4), and then the yarn tube F and its pile thread I) at the fourth pick operate in conjunction with the ground warps a, a, to form the Persian knot, after which the shuttle is again sent through the open shed, and the above-described operation is repeated.

It is understood that three weft threads 0 are interwoven with the ground warp threads a, a between successive rows of Persian knots, but each end-loop c is interlooped with the two loops d, d of the selvage binding warp thread d, and a repetition of the opera tion in forming the selvage takes place after each two picks.

It is understood that the yarn tube F is moved suificiently far downward to cause the weft c to always pass over the selvage binding warp thread d and as the yarn tube F is twice shifted in a transverse direction for each two picks, it is evident that the selvage binding warp thread d passes doubled up over the selvage ground warp threads e, e, and likewise in a doubled up condition under the said selvage ground warp threads e, e, as will be seen by reference to Figs. 4 and 5. It will further be noticed that by the arrangement described the loops d, d of the selvage binding warp thread (2 are interlooped with the end loop 0 of the weft 0 between the innermost selvage ground warp thread e and the next adjacent ground warp thread a of the fabric body A.

It is understood that I do not limit myself to the use of three weft threads between adjacent rows of pile threads b, as the number of weft threads may be increased or diminished. In the formation of oriental rugs having Persian knots, it is customary, however, to employ three wefts between adjacents rows of pile threads. It will be noticed that in using three weits between adjacent rows of pile threads one end-loop c is always formed between adjacent rows of pile threads b (see Fig. 5), and one end-loop 0 appears in alinement with alternate rows of pile threads I).

The selvage formed in the manner described is exceedingly strong and durable, and gives a very fine finish to each side edges of the fabric body A, it being expressly understood that the loom is preferably provided at each side with a yarn tube F, selvage binding warp d and selvage ground warp e e to form a selvage B for each side edge of the fabric body A.

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

1. A woven fabric, comprising a fabric body having a binding weft and a selvage having a selvage ground warp, and a continuous selvage binding Warp interwoven with thg said selvage ground warp and interlooped twice with each loop of the said binding weft.

2. A woven fabric, comprising a fabric body having a binding weft and a selvage for the said body having a plurality of selvage ground warp threads, and a continuous selvage binding warp thread extending twice over and twice under the said selvage ground warp threads for each two picks and interlooped twice with each end loop of the said binding weft.

3. A woven pile fabric, comprising a fabric body and a selvage therefor, the said fabric body having pairs of ground warp threads, pile threads each interlooped with a pair of ground warp threads in the form of a Persian knot, and a binding weft interwoven with the said ground warp threads, and the said selvage having a selvage ground warp and a continuous selvage binding warp interwoven with the said selvage ground warp and inter-looped twice with each end loop of the said binding weft of the fabric body.

In testimony whereof-I have signed my name to this specification in the presence of two subscribing witnesses JAMES KARMI DALKRANIAN.

Witnesses:

'inno. G. Hosrnn, EVERARD B. MARSHALL.

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