US2483118A - Method for distributing warp threads in circular looms - Google Patents

Description

SepE. 337 1949. v. M. .a. ANCIET METHOD FOR DISTRIBUTING WARP THREADS IN CIRCULAR LOOMS Filed June 3, 1948 Patented Sept. 27, 1949 METHOD FOR DISTRIBUTING WARP THREADS IN CIRCULAR LOOMS Victor Marie Joseph Ancet, Lyon, France, assignor to Regina S. A., Tangiers,

Morocco Application June 3, 1948, Serial No. 30,895 In France June 6, 1947 This invention relates to circular looms and is concerned more particularly with a circular loom provided with novel means for distributing the warp threads let ofI" the beams and guiding the threads to the harness mechanism. In the loom, the harnesses may be constructed to handle the threads in groups during shedding without the threads being injured by abrasion caused by rubbing of parts of the harnesses against them. 7

All circular looms are provided with distributing means which cause the warp threads supplied from the beams to assume a tubular formation on their way to the heddles and, in my Patent 2,433,190, issued December 23, 1947, I have disclosed such distributing means in the form of a reed or perforated plate, which is made up of a series of demountable rectilinear sections. The series of sections forms a polygonal structure having a large number of sides, which so closely approximates a circle as to provide proper distribution of the threads. The formation of the structure of separate straight sections simplifies the manufacture of the sections and the insertion and removal of the threads.

In my copending application Serial N 0. 765,560, filed August 1, 1947, I disclosed a harness mechanism comprising radially reciprocable slides in upper and lower levels with the outer ends of adjacent slides connected by inner and outer deformable members, between which the heddles are strung. The outer end of each slide lies between groups of warp threads on either side thereof and each member connecting a pair of slides projects a short distance laterally beyond each slide. It is, therefore, desirable to distribute the warp threads in such manner that the threads are kept from contact with the slides and the projecting ends of the members and abrasion of the threads is avoided.

The present invention is directed to the provision of novel means for use in a circular loom for distributing the warp threads from the beams and supplying the threads to a harness mechanism. The new distributing means include a plurality of straight distributing elements, which are of such length and so arranged that the groups of warp threads passing through adjacent elements to the heddle eyes of the harness mechanism are kept from contact with all other parts 2 Claims. (Cl. 13916) of the mechanism. The distributing elements may be small reeds and, in that event, a circular guide is provided for so directing the threads between the beams and the distributing reeds, that the threads are kept from continued contact with the ends of the reeds. Accumulation of waste and flock between the dents of the reeds at the ends thereof is thereby avoided and the threads, as they are manipulated by the harness mechanism, reciprocate between the dents and keep the reeds clean.

For a better understanding of the invention, reference may be made to the accompanying drawing, in which Fig. 1 is an elevational view of a portion of a circular loom provided with the distributing means of the invention} Fig. 2 'is a sectional view on the line 2.2 of Fig. 1;

Fig. 3 is a view partly in elevation and partly in section on the line 3-3 of Fig. 1;

Fig. 3a is a view similar to Fig. 3 disclosing the prior art construction; and

Fig. 4 is a perspective View showing a portion of the harness mechanism employed in the loom.

The loom illustrated is provided with a harness mechanism which includes pairs of slides [0, ll extending radially from the loom axis and lying one above the other, the slides of a pair being reciprocated in opposite directions during the operation of the loom by means not shown. Each slide has an outer end section l2 formed with upper and lower openings near each end thereof and each slide is connected to the adjacent slide on one side thereof in the same level by a pair of harness rods 13 extending through the lower openings in the end sections l2 of the slides. Each slide is then connected to the slide on the other side thereof in the same level by a pair of harness rods l3 extending through the upper openings in the end sections of the slides. The harness rods may be continuous or sectional and, in the loom shown, the rods are of the sectional type and each rod connects a pair 'of adjacent slides. Each rod is provided with enlarged heads l4 lying on the outer sides of the slides which it connects, and one of the heads is removable. Heddle wires l5 having eyes l5a for guiding the warp threads are mounted on the harness rods l3 connecting adjacent slides.

.pass around guide rods The warp threads passing to the heddle eyes are guided by a plurality of thread distributing elements 16, which may take the form of small reeds arranged in a circular series about the loom axis. Each reed is aligned with a space between adjacent pairs of slides and the reed has openings for the individual threads passing to the heddles in that space. The length of each reed N is less than the distance between adjacent slides, so that the group of threads leaving each reed is somewhat fan-shaped A main circular reed H is mounted above the end sections 12 of the Slides and on the reed 11 move the shuttles l8, by which the weft threads [9 are laid in place during tion. Below the reeds i6 is mounted a circular guide rod 29 and the warp threads '2! led from a pair of beams 22, of which onlyone isshown, 23, 24 on their way to the rod 20.

In the operation of the loom, the shed for each shuttle is formed by reciprocati'on' of slides 18, H and, since each reed I6 is shorter than the length of space between adjacent slides, the slides may be reciprocated without the warp threads at the ends of a group leaving a reed is being engaged by the slides or the heads M on the harness rods.

Theguide rod 2i! is disposed below reeds 16 at zibcutthe middle of each reed, so that, as the warp threads 21 are moved apart to form the shed, as shown in Fig. 3, the threads move through the-spaces between the dents of reeds T6. The movement of the threads back and forth through the spaces tend 'to prevent the collection of waste and flock which might otherwise be carried into the cloth. In the prior construction shown in Fig. 3a, in which the warp threads 21'' pass directly from guide rod 24 to reeds 16', the threads bear against one endof each reed I6 at 'all times. As a result, the flock and waste tends to accumulate between the dents of reeds I 6' and is not continually removed, as 'in the new construction.

What I claim is: 1

1. In a loom having beams supplying warp the weaving operathreads, the combination of reciprocating radial slides disposed in pairs one above the other, inner and outer harness rods connecting adjacent slides in the same level, heddles mounted on the harness rods between adjacent slides and having eyes for guiding the warp threads, and a plurality of separate thread distributing elements arranged in a circular sequence around the loom axis and acting on the warp threads passing to the heddle eyes, each element being aligned with a space between adjacent pairs of slides and having guide openings for the individual threads passing to the heddles in said space, the length of each distributing element being less than the length of said space.

z In a loom having beams supplying warp threads, the combination of reciprocating radial slides disposed in pairs one above the other,

inner and outer harness rods connecting adjacent slides in the same level, heddles mounted on the harness rods between adjacent slides and having "eyes for guiding the Warp threads, a plurality of separate reeds arranged in a circular sequence around the loom axis for guiding the warp threads passing to the heddle eyes, each reed being aligned with a space between adjacent .pairs of slides and having spaces for the individual threads passing to the heddles in said space, the length of ea'chreed being less than the length of said space, and a guide acting on the warp threads passing to the reeds, the guide lying between the ends of the reeds.

VICTOR MARIE JOSEPH ANCET.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 689,490 Hill Dec. 24, 1901 920,503 Toyoda May 4, 1909 2,087,322 Jabouley July 20, 1937 2,433,190 Ancet D60. 23, 1947

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