US809239A - Cloth-tension device for take-up mechanism for looms. - Google Patents

Description

No. 809,239. 4 PATENTED JAN. 2, 1906.

r G. S. ANDEM.

WiTN ESS ES INVENTOR AGTP/eczenf/rows/fl. BY \ifl/mzw A W AX/JW Q/J ATTORNEY UNITED STATES PATENT OFFICE,

CLINTON S. ANDEM, OF NORTH GROSVENOR DALE, CONNECTICUT.

CLOTH-TENSION DEVICE FOR TAKE-UP MECHANISM FOR LOOMS.

Specification of Letters Patent.

Patented Jan. 2, 1906.

To aZZ whmn it may concern.-

Be it known that I, CLINTON S. ANDEM, a citizen of the United States, residing at North Grosvenor Dale, in the county of Windham, in the State of Connecticut, have invented a new and useful Improvement in Cloth-Tension Devices for the Take-Up Mechanisms of Looms, of which the following is a specification.

In looms employing high-roll takeup" the take-up roll is usually covered with a spirally-wound fillet of perforated tin, the rough surface of which engages with the cloth to draw it forward from the fell and transmit it to the cloth-roll; but the slackening of the tension of the cloth be tween the fell and the take-up roll at the beating up of the weft and the subsequent 0 ening of the shed for the passage of the sl iuttle with the consequent tightening of the warp-threads causes the rubbing of the cloth over the rough surface of the take-up roll, whereby some of the weft-threads of the cloth may be completely severed, while others may be worn away and greatly weakened; and my invention consists in the employment of a primary cloth-deflecting guide-bar arranged to deflect the cloth downward from the plane of the fell between the take-up roll and the lay. It also consists inthe employment for deflecting action upon the cloth of a resilient guide-bar, which is adapted for curved deflection under the increased tension of the warp-threads upon the opening of the shed, whereby in the operation of the loom the central warp-threads of the lower portion of the shed instead of being comparatively slack, as heretofore, at the open shed will be held in a tight condition, whereby the frictional obstruction of the warp-threads to the passage of the shuttle through the shed will be greatly lessened.

In the accompanying drawings, Figure 1 represents a transverse sectional View of a sufficient portion of a highroll take up mechanism to illustrate my invention, the guide-bar over which the cloth is primarily deflected from the plane of the fell being rep resented of rigid construction. Fig. 2 represents a transverse sectional view, as in-Fig. 1, showing the employment of afleXible resilient guide-bar for primarily deflecting the cloth downward from the plane of the fell. Fig. 3 represents a detail view, partly broken away, showing one of the holding-arms for the parallel guide-bars over which the cloth what is called the of the cloth-roll D are mounted in downwardly-movable supports E, and the take-up roll B is mounted in fixed bearings F above said cloth-roll. The mechanism for operating these rolls may be the same as that shown and described in Letters Patent of the United States No. 643,284, to which reference may be made for a full description.

In the ordinary engagement of the cloth G with the high take-up roll B the cloth passes from the fell H direct to the top of the take-up roll and thence around the semicircumference of the said take-up roll to the cloth-roll D but in this case it is found that the action of the reed I upon the fell H at the beating up of the weft causes the slackening of the cloth between the fell and the take-up roll, the cloth being again drawn tight at the subsequent opening of the shed, thus producing arubbing action over the rough surface of the take-up roll, with consequent damage to the Woven cloth by thqwearing away of the weft-threads. In order to obviate this serious defect in the action of=the high takeup roll upon the side of the cloth G which comes in contact therewith, I have preferably provided asguide-bar supports a pair of fixed arms J J, secured to the loom-frame A by means of the bolts K. K, the said arms carrying at their upper ends the parallel guidebars L and M, the upper guide-bar L being made of elongated cross-;;ection, so as to be inflexible in the direction toward the fell, as shown in Fig. 1. In this-case the cloth G passes from the fell H first "over the rigid guide-bar L, thence downward around the guide-bar M, and thence to the periphery. of the take-up roll, theresulting slack portion of the cloth at the beating up of the weft being in this.

case located over and between the guide-bars L and M and not over the surface of the takeup roll, and upon the backward movement of the lay N and the opening of the shed the strain upon the cloth Will be sustained by the guide-bars L and M, i hereby the former sud- IIO den strain and backward movement of the cloth over the roughened surface of the takeup roll B will be prevented.

Another desirable feature of my invention is developed when the upper guidebar is made adapted for resilient curved deflection, as shown in Fig. 4, in which B represents the take-up roll, R the breast-beam, and Q Q the loom-temple, and in this case the guide-bar L, over which the cloth G primarily passes from the fell II, yields resiliently to the increased tension of the warp-threads at the opening of the shed, as indicated by the dot ted lines, so that when it is fully opened the central warp-threads of the lower side of the shed will all be drawn tight, thus providing a floor of tightly-drawn threads for the passage of the shuttle, with the result that the power required for properly throwing the shuttle through the shed will be materially lessened.

By the employment of the guidebar L, adapted for curved deflection, the selvagethreads of the warp will be maintained in a properly-tightened condition, so that the necessity for the employment of a band of sandpaper or other device for increasing the diameter of the take-up roll at its ends, as heretofore, will be obviated. The journals O of the flexible resilient guide-bar L are preferably held loosely in the bearing-sockets P of the fixed arms J J, which are secured to the loom-frame.

The application of my invention to a loom having a low take-up roll is shown in Fig. 5, in which the cloth G passes downward from the flexible resilient guide-bar L to the inner side of the take-up roll B.

I claim as my invention 1. In a cloth-tension device for looms, the combination of the high take-up roll, and the roll upon which the cloth is wound, with a tension-bar which serves to deflect the cloth from its progressive plane extending outward from the fell, and is located between the vertical plane of the axis of the take-up roll and the plane of the front face of the lay-beam inside of the breast-beam.

2. In a cloth-tension device for looms, the combination of the high take-up roll and the roll upon which the cloth is wound with the parallel tension-bars which serve to deflect the cloth downward from its progressive plane extending outward from the fell, and thence to the take-up roll, and located between the vertical plane of the axis of the takeup roll, and the plane of the front face of the lay-beam inside of the breast-beam.

3. In a cloth-tension device for looms, the combination of a take-up roll, and a roll upon which the cloth is wound with a flexible resilient guide-bar, adapted for lateral deflec tion' upon the opening of the shed, and over the surface of which the cloth primarily passes in its progressive movement from the fell to the take-up roll.

4. In a cloth-tension device for looms, the combination of a take-up roll, and a roll upon which the cloth is wound, with a flexible resilient guide-bar, for primarily deflecting the cloth from the plane of the fell.

5. In a cloth-tension device for looms, the combination of the high take-up roll, and the roll upon which the cloth is wound, with a flexible. resilient guide-bar, which deflects the cloth from the plane of the fell, downward between the take-up roll and the lay.

CLINTON S. ANDEM.

Witnesses:

SooRATEs SOHOLFIELD, ALBERT I-I TILLINGHAST.

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