US2075402A - Pile fabric loom - Google Patents

Description

March 30, 1937. A, M, MULDOQN I 2,075,402

PILE FABRIC LOOM Filed Sept 26, 1933 Ji -J;

Patented Mar. 30, 1937 UNITED. STATES PATENT OFFICE- PILE FABRIC LOOM Anthony M. Muldoon, Hightstown, N. J.

Application September 26, 1933, Serial No. 690,978

2 Claims.

This invention relates generally to looms for weaving tufted pile fabrics and more particularly to such looms for weaving the pattern through to the back of the fabric.

In the weaving of such fabrics, the pile bights have no warp threads beneath them and the comb in moving out of the fabric has a tendency to pull out or loosen the bights.

One object is to provide mechanism for producing a uniform and close woven rug.

A special object of this invention is to prevent the tuft bights from being pulled out or loosened by the comb.

Another object is to more securely position the tuft bights in the fabric.

I accomplish these and other objects by providing a gripper bar that is carried by the comb of the loom and is automatically moved into position below the row of bights and moved into direct engagement with the bights by a snap action, this not only preventing the bights from coming out of the fabric but actually driving them into the fabric.

The invention will be understood from the following description thereof taken in connection with the accompanying drawing in which- Fig. 1 is a side view and section of a part of a loom frame and comb mechanism having my improvements embodied therein.

Fig. 2 is a detail of the improved bar.

Fig. 3 is a. detail of the comb.

Fig. 4 is a sectional view of the comb and improved bar.

Fig. 5 is a detail view showing the position of 35 the comb and improved bar relative to the tuft bight as the comb is being withdrawn.

Fig. 6 is a side view of a comb carrier and comb embodying a modified form of my invention.

The general construction and operation is that of the conventional Axminster type of loom, in which there is a breast plate 8 above which the complete fabric travels. The tuft threads 9 are supplied and cut off in the usual manner. The comb I0 is supported by the carrier ll whose ends are secured to arms l2 which are hinged at I3 to the upper ends of levers I4 pivoted at l 5 and actuated in the usual manner so as to produce the horizontal component of movement of the comb.

The vertical component of the comb movement is furnished by the lifter rod l6 which is hinged at H to the carrier and actuated by a lever [B and the usual cam action (not shown).

. The plate I9 is mounted on the face of the 55 comb l0 and has a vertical sliding movement on it produced by a spring 20 in the usual manner to bend horizontally the ends of the pile tufts which have been inserted between the warp threads.

The reeds serve to keep the warps separated and beat up the tufts in the usual manner.

It will be understood that the ends of the pile threads are turned upwardly to the position shown in Fig. 5 by the action of the comb teeth in the usual manner.

In the making of fabrics in which the pattern is made visible at the back the pile bights are left unsupported in the usual weaving action so that there is a tendency for the comb teeth to drag the loose ends of the pile threads downward and thus loosen the bights. In order to prevent this loosening action and for the additional purpose of beating the tufts more tightly into the fabric I provide a bar or plate 26 which is mounted in the carrier l I in-a groove behind the comb II]. This bar is urged upwardly by springs 21 and the vertical movement of the gripper bar 26 with which engage beneath the edge of the breast a plate 8. When the comb has completed the bending of the pile tufts the gripper bar is released from the breast plate 8 and comes up against the bottoms of the pile bights and holds them in positlon while the comb teeth are being retracted.

The next shot of weft is then thrown and beaten into position by the reeds 25. By properly adjusting the timing of the comb and gripper bar, the gripper bar can be made to hold the bights while the pile threads are cut olf by the knives. The plate l9 coacts with the comb to bend over the inserted tufts. This plate l9 also keeps the face of the comb clean.

In Fig. 6 I have shown a modified form of construction in which the gripper plate is mounted on the rear face of the carrier II but the action is the same as that above described.

It should be understood that this invention is applicable to the production of pile fabrics of various weaves in which the pile bights are exposed at the lower face of the fabric.

I claim:

1. In a loom for weaving tufted pile fabrics, a movable reed, a movable comb carrier, a comb plate mounted thereon, mechanism for moving the carrier, a bar on the carrier for preventing the comb from pulling out the tuft bights and for beating up the tuft bights into the fabric and movable relative to the comb, a stationary breast plate for supporting the fabric, cam faced lugs on the bar adapted to engage the edge of the breast plate, said reed being adapted to engage the comb and move the lugs against the breast plate whereby the bar is moved to inoperative position below the breast plate, and spring means for moving the bar to operative position.

2. In a loom for weaving tufted pile fabrics, a movable reed, a movable comb carrier, a comb plate mounted thereon, mechanism for moving the carrier, a bar on the carrier for preventing the comb from pulling out the tuft bights and for beating up the tuft bights into the fabric and movable relative to the comb, a stationary breast plate for supporting the fabric, cam faced lugs on the bar adapted to engage the edge of the breast plate, said reed being adapted to engage the comb and move the lugs against the breast plate whereby the bar is moved to inoperative position below the breast plate, spring means for moving the bar to operative position and a pin and slot connection between the comb plate and bar for limiting the upward movement of the bar.

ANTHONY M. MULDOON.

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