US1998022A - Rug-edge-finishing seam and method of making same - Google Patents

Description

April 16, 1935. w. J, MORAN 1,998,022

RUG EDGE FINISHING SEAM'AND METHOD OF MAKING SAME Original Filed April 13, 1955 2 Sheets-Sheet 1 gwuc nm Mlliam J Moran W, J. MORAN April 16, 1935.

RUG EDGE FINISHING SEAM AND METHOD OF MAKING SAME Original Filed April 13, 1933 2 Sheets-Sheet 2 I'm/illiam clMoran Patented A r. 16, was

umrco res PATENT OFFICE RUG-EDGE -FINISHDVG SEAM AND METHOD OF MAKING SAME William J. Moran, New York, N. Y., assignor to The Singer Manufacturing Company, Elizabeth, N. .l[., a corporation of New Jersey Original application April 13, 1933, Serial No. 665,891. Divided and this application October 31, 1933, Serial No, 695,966

8 Claims.

parts hereinafter set forth and illustrated in the v accompanying drawingsof a preferred embodiment of the invention, from which the several features of the invention and, the advantages attained thereby will be readily understood by those skilled in the art.

Fig. 1 of the drawings is a perspective view of a rug edge with a binding strip attached thereto in accordance with the first step of the present method. Fig. 2 is a perspective view of a rugedge finished in accordance with the present improvement. Fig. 3 is a sectional view of the finished seam shown in Fig. 2. Fig. 4 is a plan view of the bed of a sewing machine by which the first step of the method may conveniently be carried out. Fig. 5 is a section on the line 5-5, Fig. 4, and Fig. 6 is a section on the line 6-6, Fig. 4, with the rug-edge and binding strip in their relative positions for attachment together by the laterally vibrating needle of the machine.

1 This application is a division of my copending application, Serial No. 665,891; filed Apr. 13,

While the method may be performed entirely by hand it is more convenient to initially attach the binding strip l to the raw edge 2 of the loosely woven rug base 2 by use of a conventional zigzag overedge lock-stitch sewing machine having the usualreciprocatory and laterally vibratory needle 3 and a fiat bed d upon which -is mounted the thick work-suppOrting plate 5 is the relatively thin edge 9 spaced from the bed i and having its front corner rounded at 89. The work is fed through the machine preferably by means of a toothed top-feeding wheel ll, Fig. 6.

Cooperating with the edge 9 of the rug-supporting plate 5 is the rug-edge-bending guide 52 having a shank l2 received in a groove id inthe plate 14 secured to the bed 4 by screws 85 passing through slots IS in the plate M. The shank l2 of the guide I2 is held in the groove is by means of the screw it which is carried by the strap ll overlying the shank l2 and screwed to the plate is. Provision is thus had for adjustment of the guide l2 transversely of the line of seam-formation to cause the needle 3 to penetrate the downwardly bent edge of the rug at the desired distance from the edge at each alternate thrust. The lateral adjustment of the guide I2 is preferably so made that the needle on its workpenetrative thrust along the line aa, Fig. 6, will emerge at the juncture it of the pile fibres I9 of the rug with the woven rug base 2 at the raw edge of the latter. The needle, on its next or overedge descent passes along the line b-b, Fig,

6, without penetrating any part of the work. The

zone between the lines a-a and b-b represents the stitching zone within which the bent over edge-portion of the rug is disposed.

The guide l2 has an upstanding guide-wall 20 which is preferably slightly concaved and which cooperates with the overhanging edge 9 of the 'plate 5 to bend downwardly the raw edge of the rug and present it in this condition to the laterally vibrating needle 3. The guide [2 is cut away at 2| to admit the needle, as shown best in Fig. 5. It also has a confining wall 22 overhangingthe undercut edge 9 and merging into the upstanding wall 20.

Let into the bed I is the throat-plate 23, Fig. 4,

-formed with the laterally elongated needle-aperture 24 anddepending needle-guide fin 25. The throat-plate 23, which is generally oval in shape, is cut away at 26, 21 to admit the flat strip-guide tube 28 which is received in'a groove 29-cut in the bed 4 lengthwise of the line of seam-formation. The strip-guide 28 terminates closely in front of the needle-hole 24 in the throat-plate and the edge 21 of the throat-plate is slanted upwardly and rearwardly, as shown in Fig. 5, to smoothly guide the binding strip 1 issuing from the guidetube onto the throat-plate. The guide-tube 28 has secured thereto a fiat shank 30 which is slotted at 3| for reception of the fastening screws 32. The groove 29 in the bed 4 is wider than the guidetube 28, thus permitting the guide-tube to be adjusted sidewise or transversely of the line of seamformation, so that ,one edge of the binding strip. II will underlap the downturned raw edge of the rug, Fig. 6, and be safely caught by the needle 3 on its work-penetrating thrust and stitched in juxtaposition with the raw edge of the rug by a series of zigzag overedge lock-stitches; the plane of the binding strip being horizontal and at an angle to the substantially vertical plane of the base 2 of the rug at the raw edge of the latter. The plate 5 is recessed in its under face at 5 toaiford clearance for the binding strip I after it passes the needle 3;

Fig. 1 illustrates the work after it has passed through the machine. The binding strip l is first attached to the raw edge of the rug by a series of overedge zigzag lock-stitches comprising the needle-thread loops 33 and shuttle-thread 34. It will be observed that the work-penetrating stitches have a relatively wide bite in the relativelyloosely woven base 2 of the rug and a relatively narrow bite in the selvage of the more tightly woven binding strip I. The overedge stitches in conjunction with the work-penetrating stitches, bind the fibersof the rug-base tightly together and effect a more secure. anchorage of the work-penetrating stitches in the rug-base and a more secure attachment of the initially stitched edge of the binding strip to the raw edge of the rug.

After the binding strip I has been attached to the rug-edge, as shown in Fig. 1, it is folded around the overseamed edge into engagement with the back of the rug and whip-stitched at 35wby hand to the back of the rug; the binding strip I concealing and protectingthe raw edge of the rug, as well as thezigzag stitches, and projecting but little beyond the edge of the pileforming portion I9 of the rug.

Having thus set forth the nature of the invention, what I claim herein is:

1. In a rug-edge-finishing seam, a rug body comprising a woven base having a face and back with pile-fibres attached to said base and projecting from the face side of the latter, said base having a raw edge, a binding strip'having an edge-portion in juxtaposition with said raw edge but at an angle to the plane of the back of the rug-base, a series of overedge stitches embracing and covering said juxtaposed edge-portions exclusive of the projecting ends of said pilefibres, said binding strip being folded around its overseamed edge into engagement with the back of the rug, and means for. securing said bindin strip to the back of the rug.- F

2. In a rug-edge-finishing seam, a rug-body comprising a woven base having a face and back with pile-fibres attached to said base and projectingfrom the face side of the latter, said base having a raw edge, a binding strip having an edge-portion in juxtaposition with said raw edge but at an angle to the plane of the back of the rug-base, a series of zigzag lock-stitches embracing and covering said juxtaposed edge-portions exclusive of the projecting ends of said pile-fibres, said binding strip being folded around its overseamed edge into engagement with the back of the rug, and means for securing said binding strip to the back of the rug.

3. An edge-finishing seam for sewed articles comprising a woven pile-fabric presenting a pile face, aback face and a raw edge, a binding strip having an edge in juxtaposition with saidraw edge of the pile-fabric, a series of overedge stitches anchored in the juxtaposed edges of said pilefabric and binding strip and enclosing both of said edges exclusive of the projecting ends of pilefibres of the pile-fabric, said binding strip being folded about the overseamed edges of the pilefabric and binding strip into engagement with the back face of the pile-fabric, and means for securing the binding strip to the back face of the pile-fabric.

4. The construction set forth in claim 3 with the overedge stitches more deeply anchored in the edge of the pile-fabric at the back face of the latter than at the pile face thereof.

5. In a rug-edgeishing seam, a rug-body comprising a woven base having a face and back with pile-fibres secured to said base and projecting from the face of the latter, said base having a raw edge-portion, a binding strip having an edge-portion in juxtaposition with said raw edgeportion but at an angle to the plane of the back of the rug-base, a series of overedge stitches embracing and covering said juxtaposed edge-por- 1 tions exclusive of the projecting ends of said pilefibres, said series of stitches having a relatively. wide bite in the base of the rug and a relatively narrow bite in the binding strip, said binding strip being folded around its overseamed edge into engagement with the back of the rug, and means for securing said binding strip to the back of the 6. The method of binding the margin of a bodymaterial. comprising anchoring one edge of a binding strip to the body-material margin by a stitching thread passed diagonally through the body-material from points on one face of the body material relatively widely spaced from the edge thereof to points on the other face of the body-material relatively narrowly spaced from the edge thereof and through one edge-portion of the binding strip, folding the binding strip around the edge of the body-material, and securing the binding strip to the first mentioned 'face of the body-material.

'7. The method of binding the raw edge of a rug of pile-fabric which consists in simultaneously presenting the rug-edge and an underlapping binding strip to an overedge sewing machine having a reciprocatory straight needle, with the rug face down and with its raw edge-portion bent downwardly so as to be inclined to the plane of the binding strip within the stitching zone, and in folding the unattached portion of the binding strip around the stitched portion and securing it to the back of the rug.

8. The method of binding the raw edge of a rug of pile-fabric which consists in simultaneously presenting the rug-edge and an underlapping binding strip to the reciprocatory and laterally vibratory needle of a zigzag-stitch sewing machine, with the rug face down and with its raw edge-pprtion bent downwardly so as to be inclined to the needle-path and to the underlapping binding strip, and in folding the unattached portion of the binding strip around the stitched portion and securing it to the back of the rug.

WILLIAM J. MORAN.

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