US1970444A - Weft pile fabric loom - Google Patents

Description

Aug. 14, 1934.

WEFT PILE FABRIC LQOM v Filed Sept. 14, 1933 Fig.1

W. B. COOPER ET AL 2 Sheets-Sheet 1 I AT7\'OF?NEY 1934. w. B. COOPER ET AL 1,970,444-

WEFI' FILE FABRIC LOOM Filed Sept. 14, 1933 2 Sheets-Sheet 2 Fig.3

// /VENTOR MaGM,

ATTORNEY Patented Aug. 14, 1934 UNITED STAT S PATENT OFFICE nix, Amsterdam, N. Y

., assignors. to Bigelow Sanford Carpet (30., Inc., Thompsonville, Conm,

a corporation of Massachusetts Application September 14, 1933, Serial No. 889.381. llv Claims. (Cl. 139-21) nism or the wires have been secured to a heddle or passed through eyes carried by it. These 5 expedients have not only complicated the loom structure but have slowed down the loom operation with consequentloss of output and much wear upon the loom parts.

One of the objects of the present invention is to provide a loom for weaving weft pile fabrics wherein the means for producing the pile forming loops consists of fixed members extending from the front of the loom towards the lay reed, which, on the beat up, forces the pile weft 5 over the ends of the loop forming members between the associated warp threads, so that un der the tension of the latter portions of the pile forming weft threads are depressed towards and bound to the backing fabric.

Another important feature of the invention consists in the formation-of a two plane fabric with a dead stuifer warp separating the two sheds and associating the loop forming members with relation thereto, such that the lower edge portion of the loop forming members shall lie substantially in the plane of the stuffer warps, so that on the simultaneous introduction of the upper and lower weft shots the relation of the warps and the weft shots is not disturbed from 40 the intended purpose.

The invention and othernovel features thereof will best be made clear from the following description and accompanying drawings of one good form thereof.

In the drawings:

' Fig. 1 is a perspective view of portions of the loom structure with parts broken away and having the present invention applied thereto;

Fig. 2 is a longitudinal section showing in ad dition to that illustrated in Fig. 1, the shedding mechanism;

Fig. 3 is an enlarged detail showing the relation of the thread structure, the loop forming members and the lay reed as the latter moves as frontwardly towards the fell of the cloth;

Fig. 4 is an enlarged section on the line 4--4 of Fig. 3;

Fig. 5 is a transverse section of the fabric showing the relation of the threads and pile after the weft pile threads have been cut; and

Fig. 6 shows one form of needle mechanism for the simultaneous introduction of the weft threads in the upper and lower sheds.

The loom frame 1 may beof any appropriate character for the support of the operating 05 parts and mounted on the loom frame for reciprocating movement is the lay 2 which may be operated in any usual manner from a going part of the loom, and extending upwardly from the lay 2 is the reed 3, and as indicated, these parts may be of any usual or desired character.

As shown in the present instance of the invention, the fabric to be woven is of the two plane type with a straight stufler warp extending between the two weaves. The warps a and b consti- 15 tute the binder warps while the warps c constitute the stuifer warps and, as indicated more. clearly in Fig. 2, the two binder warps a and b are operated by the shedding mechanism which likewise may be of any usual character for the so formation of an upper and lower shed. The stuifer c is held in fixed position and may conveniently be passed through an eye in a stationary heddle frame.

Extending transversely of the loom at the 5 front thereof is the breast plate 4 over which the fabric is passed as it is woven and above the breast plate is a cross bar 5 which may be secured to the loom frame 1 at each side of the loom by suitable brackets 6 through which extend securing bolts '7.

Secured to the under portion of the transverse bar 5 is a carrier bar 8 having provisions for the support of the fixed weft loop forming members and such carrier bar 8 may be secured to the cross bar 5 by suitable means such as the bolts 9 and 10.

The carrier bar is provided with a number of recesses 11 on its under surface which are in appropriate spaced relation laterally to receive the'front end portions of the weft loop forming members 12, one of which is secured in each of the recesses 11. i

The construction and mounting of the weft pile loop forming members 12 are of novel character in that, first, such members are rigidly secured to the carrier 8 and their free ends extend toward the lay reed, as shown, and, second, each of the loop forming members-is provided with a'downward bevel 13 while the lower surface 14 of the loop forming members extends rearwardly in the plane of the stuffer warps c, the result being that when the upper and lower weft shots are introduced into the shed by the needle mechanism, the upper weft shot will be rearward of the ends of the loop forming members and between such ends and the lay reed, so that on the beat-up the reed will first force the upper weft shots over the inclined ends of the loop forming members and then move both weft shots frontwardly towards the fell of the cloth, the upper weft shots, of course, riding on and being looped over the upper portion of the loop forming members.

The stuffer warps c divide the upper and lower sheds and by reason of the fact that the lower edge portion of the loop forming members is in the plane of the stuffer warps the. lower weft shots may be moved to the fell of the cloth on the beat up without engaging or riding over the loop forming members.

The needle mechanism for simultaneously introducing the upper weft shot d and the lower weft shot e may be of any desired character but, as shown, it consists of an upper needle 15 and lower needle 16 which may be either detachably connected to the carriage 17 or fixed thereto and the carriage 1'7 itself is actuated by an arm 18 operated through a link 19 from any convenient going part of the loom, the construction being such that on operation of the needle mechanism an upper weft shot if is introduced into the upper shed and the'lower weft shot e is simultaneously introduced into the lower shed, a condition which is indicated by dotted lines in Fig. 2, wherein the upper weft shot is indicated as being rearward of the ends of the loop forming members 12 and between such ends and the reed, the effect being that on the beat up the reed moves the upper weft shot d upwardly over the inclined ends of the loop forming members 12 and then moves both weft shots frontwardly towards the fell of the cloth onthe beat up, thereby producing in the upper weft shots loops in the weft, as indicated at 20, Fig. 4.

Referring to Fig. 2, the lay is shown by dotted lines in its substantially'full back position with the upper weft shot d between the ends of the loop forming members and the reed, also shown in dotted lines, while the lower weft shote is below the plane of the stufier warps c and consequently below the plane of the lower edges of the loop forming members. As the lay moves frontwardly on the beat up and before it completes its frontward movement the reed 3 acts upon the upper weft shot d to first move it over the inclined end portion of the loop forming members 12 and then moves both weft shots frontwardly with the beat up, the rear end portions of the loop forming members at such times pass between the dents of the reed.- As the loops of the upper weft shot move frontwardly under the action of the reed, the lower weft shot 0 is likewise moved frontwardly, a condition best indicated in Fig. 3, and as the two weft shots are heat up by the reed the loops of the preceding u1per weft shot, as indicated at 22, Fig. 3, are bound in the fabric while the third loop of the upper weft shot, as indicated at 23, is forced upon a cutter 21 secured in the upper portion of each of -the loop forming members, with the result that the loops in the upper weft shot are gift and present the condition as indicated in What is' claimed is: i

1. In a loom for weaving weft pile fabrics, the

combination of the lay having a reed, shedding mechanism for forming an upper and a lower shed separated by a stufferwarp, a series of fixed weft loop forming members secured at the front of the loom and having their free ends extending towards the reed when in its back position, and mechanism for introducing simultaneously a weft shot in each shed that on the beat up the weft shot in the upper shed may be moved over the ends of the loop forming members to produce pile forming loop in the upper weft shot.

2. In a loom for weaving weft pile fabrics, the combination of shedding mechanism for dividing the warp into an upper and a lower shed separated by a dead stufier warp, a series of weft loop forming members secured at the front of the loom and having their rear ends held in fixed position frontward of the shedding mechanism, needle mechanism for introducing a weft shot in both sheds, and a lay having a reed for forcing the upper weft shot over the ends of the 'loop forming members to form loops in the upper weft shot on the beat up.

3. In a loom for weaving weft pile fabrics, the combination of the lay having a reed, shedding mechanism for forming an upper and a lower shed separated by a stuffer warp, a series of fixed weft loop forming members secured at the front of the loom and having their free ends downwardly bevelled extending towards the reed when in its back position, and mechanism for introducing a weft shot in each shed that on the beat up the weft shot in the upper shed may be moved over the ends of the loop forming members to produce pile forming loop in the upper weft shot.

4. In a loom for weaving weft pile fabrics, the combination of a breast plate over which the fabric passes as it is woven, a cross bar mounted on the loom frame above the breast plate, a series of weft loop forming members secured in fixed position and having their free ends extending rearward of the breast plate, means for dividing the warp threads into upper and lower sheds, needle mechanism for introducing simultaneously a shot of weft in each shed, a lay having a reed to first move the upper weft shot over, the end of the loop forming members, and second,

1 complete the beat'up of both weft shots with the upper weft shot forming weft loops over the top of the loop forming members.

5. In a loom for weaving weft pile fabrics, the combination of the lay having a reed, shedding mechanism for dividing the warp threads into an upper and lower shed with a stuffer warp between the two sheds, a series of stationary weft loop forming members secured at the front of the loom and having their rear ends extending towards and terminating in front of the reed when in its-back position and needle mechanism for introducing simultaneously a weft shot in eachshed that the reed may move both shots towards the fell of the cloth and the upper weft shot over the ends of the loop forming members on the beat up and form weft pile loops.

6. In a loom for weaving weft pile fabrics, the combination of the lay having a reed, shedding mechanism for dividing the warp threads into an upper and a lower shed, a series of weft loop 1 forming members extending from the front of the loom and having downwardly bevelled ends located in fixed position in the upper shed when the sheds are opened and terminating in front of the reed when it is in its rear position, a needle 1 mechanism for introducing a weft shot in the upper shed between the reed and the ends of the weft loop forming members and for simultaneously introducing a weft shot in the lower shed that on the beat up the reed may force the upper weft shot over the ends of the loop forming members to form weft loops in the upper weft shot.

'7. In a loom for weaving weft pile fabrics, the combination of the lay having a reed, shedding mechanism for dividing the warp threads into an upper and a lower shed, a series of loop forming members extending from the front of the loom and having downwardly bevelled ends located in fixed position in the upper shed when the sheds are opened andterminating in front of the reed when it is in its rear position, a needle mechanism for introducing a weft shot in the upper shed between the reed and the ends of the weft loop forming members and for simultaneously introducing a weft shot in the lower shed that on the beat up the reed may force the upper weft shot over the ends of the loop forming members to form weft loops in the upper weft shot and a loop cutter at the front portion of the loop forming members.

8. In a loom for weaving weft pile fabrics, the combination of the lay having a reed, shedding mechanism for dividing the warp' threads into an upper and a lower shed, separated by a dead stuffer warp, a series of weft loop forming members extending from the front. of the loom with their lower longitudinal edges in the plane of the stulfer warps, and having downwardly bevshed that on the beat up the reed may force the upper weft shot over the ends of the loop forming members toform weft loops in the upper weft shot.

9. In a loom for weaving weft pile fabrics, the combination of shedding mechanism, the lay having a reed, a series of fixed weft loop forming members secured at the front of the loom and having the ends of the weft loop forming members between the front of the loom and the reed when in rearward position, and means for introducing a weft shot in the shed between the reed and the free ends of the weft loop forming members that the reed may force the weft shot over the free ends of the weft loop forming members and form loops in the weft shot on the beat up.

WELLESLEY B. COOPER. ERNEST THEODORE PHOENIX.

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