US3343570A - Apparatus and method for manufacture of carpets - Google Patents

Description

J. SABBE Se t. 26, 1967 APPARATUS AND METHOD FOR MANUFACTURE OF CARPETS 2 Sheets-Sheet 1 Filed March 1, 1965 FIG.| (PRIOR ART) FIG.2

Sept. 26, 1967 J. SABBE 3,343,570

APPARATUS AND METHOD FOR MANUFACTURE OF CARPETS Filed March 1, l965 2 SheetsSheet 2 FIG. 301

IO 9 FIG. 3b H 20 IO a "II:EEEEEI|| IJ FIG. 3c 9 20 I9 g Z-EIIIIIIIt] FIG. 34 g H 7;"---=== MEANS FOR OPERATING RISE AND FALL BOX INVENTOR BY JAN SABBE ATTORNEY.

United States Patent 3,343,570 APPARATUS AND METHOD FOR MANUFACTURE OF CARPETS Jan Sabbe, Courtrai, Belgium, assignor to Societe Lihrex Anstalt, Vaduz, Liechtenstein, a corporation of Liechtenstein Filed Mar. 1, 1965, Ser. No. 435,994 Claims priority, application France, Mar. 4, 1964, 18,365 6 Claims. (Cl. 139-21) The present invention relates to the production of carpet fabrics and is particularly concerned with a method of producing a selvedge on pile-fabrics carpets woven face to face on a loom with a shuttle or on a shuttleless loom and with a carpet having selvedges produced by the new method.

In the normal manufacture of carpets face to face on a loom with a shuttle the latter reciprocates in one face component and then in the other component. The same weft thread passes thus from one component to the other at the edge of the carpet. When the two fabric components are being separated, this thread is cut and the selvedges possessing two free yarns must be bonded or fixed in some way. In contrast the opposed selvedge of each carpet is smooth and free from yarn ends. The same applies to carpets manufactured face to face on shuttleless loom functioning like a loom with a shuttle.

It is one object of the present invention to provide an apparatus for the manufacture of carpets, which avoids the loose yarns at one of the selvedges and forms this selvedge such, that each selvedge of the carpet is smooth and free from yarn ends.

It is another object of the present invention to provide an apparatus for the manufacture of carpets, wherein a shuttle or a source of yarn is provided for each component fabric, each of the shuttles or each of the two yarns effecting its movement in turn by appropriate means.

The control means for the shuttles may be constituted for example by a turret box or a rise and fall box with two compartments, to bring each compartment in turn to a position to throw its shuttle.

In the looms without shuttle, the means which feed each of the two weft yarns into the shed are arranged to lay in turn two picks of each yarn.

With these and other objects in view which will become apparent in the following detailed description, the present invention will be clearly understood in connection with the accompanying drawings, in which:

FIG. 1 is a diagrammatic illustration of the course of the yarn from the shuttle or from a yarn source in the conventional process;

FIG. 2 is a diagrammatic illustration of the course of the yarn from two shuttles or from two yarn sources in the process according to the present invention;

FIGS. 3a, 3b, 3c and 3d are diagrammatic illustrations showing the succession of movements of the shuttles for weaving the two fabrics of FIG. 2; and

FIG. 4 is a fragmentary enlarged vertical schematic section of the picker shuttle and the rise and fall box for the two shuttles of FIG. 3a.

Referring now to the drawing, in the manufacture of carpets face to face on a shuttle loom of the prior art (FIG. 1), the shuttle forms a pick 1 in the upper fabric component and then a pick 2 in this upper component. The picks 1 and 2 are interwoven with the warp yarns 3 of the upper component. After the pick 2 a shuttle 4 is brought to the level of the lower component, where at the outward throw it forms a pick 5 and at the inward movement a pick 6 is interwoven with the warp yarns 7, of the lower component. The weft yarns 1 and 2 of the upper component are thus connected to the weft yarns 5 and 6 of the "ice lower component on one side only of the two components by a strand 8 which is cut when the two components are separated. Because of this cut, the selvedge of the two components is in danger of fraying on one side and in order to prevent this, it must be fixed by a special seam.

The present invention aims at avoiding this disadvantage by producing two identical selvedges on each side of the two pieces.

Referring now again to the drawings, and in particular to FIGS. 2-4, for this purpose there is provided a shuttle 9, for the upper component (FIG. 2) and another shuttle 10 for the lower component. Each of these shuttles 9 and 10 is actuated separately and in turn by the same shuttle driving mechanism or picker 11a as in a loom with one shuttle. However, to this mechanism is connected a turret box or a rise and fall box 17 containing the shuttles, so that each one thereof is presented in turn to the picker 11a which actuates the shuttles.

By reason of this device, a weft yarn 11 of the upper component surrounds the warp yarns 12 and 13 of each selvedge exactly in the same manner between each pick. The two selvedges are consequently strictly identical.

This is the same for the lower component, where a weft yarn 14 surrounds the warp yarns 15 and 16 of each selvedge.

In this manner no Weft yarn connects the two pieces and no yarn is cut. Neither selvedge is in danger of fraying and need be fixed or bonded by a special operation.

Referring now again to the drawings, and more particularly to FIGS. 3-4, for the manufacture of the fabric shown in FIG. 2, the shuttles 9 and 10 are shown in an upper and lower shuttle box, respectively, of a rise and fall box 17. Next to the rise and fall box 17 is a shuttle driving means or picker 11a having a conventional picker stick or arm 1115 (FIG. 4) for actuating the picker 11a.

The rise and fall box 17 is vertically movable relative to the picker 11a, as indicated by the double edged arrow 25 (FIG. 4), by a conventional means 18 for operating the rise and fall box 17, thereby presenting each shuttle 9 and 10, in turn, to the picker 11a, as may be seen from the sequential positions of the rise and fall box 17 relative to the picker 11a as illustrated by FIGS. BIZ-3d, re spectively.

In FIG. 3a the rise and fall box 17 is in its uppermost position, thereby positioning the shuttle 10 next to the shuttle driving means or picker 11a, which shuttle 10 is then thrown through the lower shed (indicated by dashed lines in FIG. 3a), towards the right hand end of the lay into a fixed shuttle box 20. By this passage of the shuttle 10 one-half of the weave of the weft yarn 14 of the lower fabric component of FIG. 2 is completed. To complete the lower fabric component, the shuttle 10, now in the shuttle box 20 (FIG. 3b) is thrown back through the lower shed by picker 19.

To form the upper fabric component, the rise and fall box 17 is then moved downwardly to its lower position (FIG. 30) by the means 18 for operating the rise and fall box (FIG. 4) so that the shuttle 9 is now positioned next to the shuttle driving means 11a. The shuttle 9 is then thrown through the upper shed (indicated by the dashed lines in FIG. 30) to the fixed shuttle box 20 on the right hand side, as shown in FIG. 3d, to complete one-half of the upper fabric component of FIG. 2. The picker 19 then throws the shuttle 9 back through the shed toward the upper shuttle box of the rise and fall box 17 to complete the upper fabric component of FIG. 2, and the cycle is then repeated.

The same principle can be adopted in looms without shuttle or in a loom in which the shuttle has been replaced by a device which feeds the weft yarn into the shed. In this kind of loom there is a source for a weft yarn and 3 for weaving face to face, the weft yarn passes also from one component to the other, having the same course as indicated in FIG. 1.

In order to obtain selvedges of the present invention, with looms without a shuttle, it is necessary to provide two courses for weft yarns, one for each component. In the course of weaving two picks are laid in the upper component from the first source of weft yarn, then two picks are laid in the lower component from the second source of weft yarns.

The control mechanism for the two shuttles 9 and 10 or for the yarns in looms without shuttles has not been illustrated in detail because any person skilled in the art would readily be able to adapt devices known in the weaving art for performing the required function and such control mechanism is not part of the present invention.

While I have disclosed one embodiment of the present invention, it is to be understood that this embodiment is given by example only and not in a limiting sense, the scope of the present invention being determined by the objects and the claims.

What I claim is:

1. A method of producing pile fabrics face-to-face having an upper component and a lower component and a shuttle for each of said components in a two-shuttle loom, comprising the steps of throwing each of said two shuttles separately and alternately in a shed to surround a warp yarn by a weft yarn in each of said components.

2. An apparatus for producing pile fabrics face-to-face including an upper component and a lower component, comprising a shuttle for each of said components, respectively,

picker means for actuating said shuttles causing each of said shuttles to perform a reciprocating movement separately from each other, in its corresponding component, respectively, in order to surround a warp yarn by a weft yarn in each of said components, and means for moving said shuttles alternately and sequentially with the corresponding component, into position adjacent said picker means so that said picker means causes said shuttles to perform said reciprocating movement sequentially.

3. The apparatus, as set forth in claim 2, wherein said means for moving said shuttles comprises a turret box, in order to put each of the components in a position adjacent said picker means to throw the corresponding shuttle.

4. The apparatus, as set forth in claim 2, wherein said means for moving said shuttles comprises a rise and fall box, in order to put each of the components in a position adjacent said picker means to throw the corresponding shuttle.

5. The apparatus, as set forth in claim 2, wherein said shuttles for each of said components guides each of said weft yarns into a shed, and

said shuttles for each of said components each laying two yarn picks.

6. A carpet produced by the method, as set forth in claim 1, comprising two non-fraying, identical selvedges.

References Cited UNITED STATES PATENTS 324,394 8/1885 Mair et al 139-21 549,182 11/1895 Bullock et al. 139-21 1,265,084 5/1918 Hutchins et al. 13921 1,524,398 1/1925 Kenney l3921 1,667,306 4/1928 Brooks 13920 1,943,662 1/1934 Emery et al 13921 2,140,134 12/1938 Kohler et al. 139-20 2,152,592 3/1939 Hardiman 13921 2,714,397 8/1955 Morgan 139-21 2,714,398 8/1955 Morgan 139-21 FOREIGN PATENTS 746,716 3/ 1933 France.

3,518 of 1884 Great Britain. 10,939 of 1894 Great Britain.

MERVIN STEIN, Primary Examiner.

I. KEE CHI, Assistant Examiner.

Claims (1)

1. A METHOD OF PRODUCING PILE FABRIC FACE-TO-FACE HAVING AN UPPER COMPONENT AND A LOWER COMPONENT AND A SHUTTLE FOR EACH OF SAID COMPONENTS IN A TWO-SHUTTLE LOOM, COMPRISING THE STEPS OF THROWING EACH OF SAID TWO SHUTTLES SEPARATELY AND ALTERNATELY IN A SHED TO SURROUND A WARP YARN BY A WEFT YARN IN EACH OF SAID COMPONENTS.

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