US2141652A - Fabric guide for take-up - Google Patents

Description

Dec. 27, 1938. E. R. HOLMES FABRIC GUIDEI'OR TAKE-UPS Filed Jan. 20, 1938 FIG;

Patented Dec. 27, 1938 UNITED STATES r ATE.

T OFFIQE FABRIC GUIDE FOR TAKE-UP Application January 20, 1938, Serial No. 185,935

4 Claims.

This invention relates to improvements in cloth guide rolls in the take-up of narrow ware looms and it is the general object of the invention to provide a mounting which will require the guide roll to remain in proper contact with the fabric as the latter passes between the guide and the take-up rolls. a

It has been customary heretofore in narrow ware looms .to pass the fabric being woven around the take-up roll and then pass it preferably over a guide roll movable toward the takeup roll and held in that position by the tension of the fabric.

In certain instances the roll has been mounted in stationary hangers which receive the gudgeons of the guide rolls. It is desirable that the guide roll be free to move toward and from the take-up roll to facilitate handling of the fabric, but this result has heretofore been accomplished by a construction which permits the guide roll to assome a position oblique to the take-up roll and as a. result of this relation the fabric does not win-d evenly as it should.

It is an important object of my present invention to provide a mounting for the guide roll which will permit the latter to move toward and from the take-up roll but always with its axis substantially parallel to that of the take;up roll. This result I accomplish by means ofa strap through which the guide roll gudgeons pass and a guide pin which restrains lateral motion of the strap while at the same time allowing it to move toward and from the take-up roll. The hanger proper will ordinarily have open slots to receive the gudgeonsbut the strap has a closed hearing for each gudgeon, the effect of which is to prevent objectionable angular motion of the guide roll axis.

It has also been found in prior constructions that the tilting of the guide roll tends to move the fabric off one side of the roll onto the gudgeon, thereby slackening the tension of the web and soiling the latter. It is another object of my invention to form the strap in such a way as to constitute guides lying close to the roll and positioned to prevent the fabric from slipping off the guide roll.

With these and other objects in view which will appear as the description proceeds, my invention resides in the combination and arrangement of parts hereinafter described and set forth.

In the accompanying drawing, wherein a convenient embodiment of my invention is set forth, 55 Fig. 1 is a vertical longitudinal section through the fabric F passes.

the forward part of a narrow ware loom showing my invention applied thereto,

Fig. 2 is an enlarged end elevation of one of the guide rolls and its support,

Fig. 3 is a front elevation taken in the direction l5 of arrow 3, Fig. 2,

Fig. 4 is a perspective view of the strap forming an important part of my present invention, and

Fig. 5 is a plan view of the bracket which holds 10 the guide pin. 7

My p-resentinvention is used on a loom having a breast beam if! to the rear of which is attached a bearing bracket 5 l with a cloth roll l2 over which i The latter extends down- 15 wardly to a take-up roll it mounted in stand It and rotating by any approved driving mechanism not shown but well understood. The web or fabric extends around substantially more than one-half the periphery of the take-up roll i5 and 20 then engages a guide roll ll, passing over the latter and extending downwardly to the wind-up roll [8 which may also be rotated in any approved manner.

It is necessary for correct Weaving to main- 25 tain the tension of the web F this tension being determined by. the let-off not shown and the take-up. The purpose of the guide roll I? is to cause the fabric to adhere closely to the take-up roll so that the latter may create sufficient ten- 30 sion to draw the web and warp threads forwardly through the loom. It is obvious that proper contact between the fabric and the take-up roll is desirable and necessary for the production of uniform fabrics. 35

ihe guide roll has extending from each side thereof a gudgeon 20 which fits into an open pocket 2i formed as an upwardly opening hearing located in the lowerpart of a bracket 22. Each bracket is secured to the under side of the 0 breast beam iii in any approved manner and will be stationary with respect to the loom frame for any particular setting or spacing of the several webs in the loom. The open pockets 2| permit the gudgeons to rise and fall' relatively to the 45 take-up roll.

The matter thus far described is of usual construction and of itself forms no part of my present invention. The take-up roll ordinarily has a friction surface to grip the fabric while the guide roll may be formed of wood with a periphery which is either smooth or covered by sandpaper. In the operation of the old construction as already set forth the open bearings 2| permit the axis of the guide roll I! to become oblique with respect to the axis of the take-up roll, the result of which is a tendency on .the part of the fabric to shift along the length of the guide roll and ultimately slip off it.

My invention includes the provision of a strap which serves as a guard for the guide roll to gether with means for preventing substantial angular motion of the guard while permitting the latter to rise and fall. In carrying my invention into effect I provide a strap 25 having a top 26 from which depend parallel spaced guard arms 21. In the bottom of each of the latter is formed a guide bearing 28 proportioned to receiveone of the gudgeons 2E]. The space between the guard arms 2'! is substantially the same as the distance between adjacent surfaces of the'two hangers 22, as shown in Fig. 3. The guard arms extend close to the adjacent edges of the guide roll I! andthe top 26 is a substantial distance above the top of the guide roll to facilitate passage of the web or fabric between the 'roll and said top.

An aperture 39 formed in the top 26 preferably centrally thereof receives .a depending guide pin 35 which is rigid with respect to the loom frame. This lattercondition is accomplished by providing a bracket 35 secured to the under side of the breast beam l0 and having a pair of spaced parallel webs 36 between which extends a slot 37 suificiently wide to receive the guide pin 3|. The upper end of the latter is threaded to receive two nuts the upper of which indicated at 38 rests on the top of the webs 36 while the lower nut 39 engages the under side of said webs and serves as check nut to hold the pin in rigid position. The longitudinal position of the pin relatively to the breast beam can be altered by a movement transversely of the loom due to the fact that the webs 36 extend under thebreast beam in the direction of the length thereof, as shown in Fig. 5. The lower end of pin 3! extends through the aperture 39 fitting thereinto sufiiciently closely to prevent lateral motion or movement to the upper part 26 of the U-shapedlstrap or guard.

In operation, the fabric travels around the take-up .and guide rolls in the usual manner and any tendency of the guide roll to tilt so that its axis is oblique with respect to the axis of the take-up roll is resisted by the bearings 28 through which the gudgeons 20 extend. These bearings 28 are held in proper position by the pin 35 which enters the aperture 30 to prevent substantial motion of the strap in all directions except vertical. The strap also extends close enough to the guide roll .to prevent the Web from slipping off the edge thereof, as will be understood from Fig. 3. During any upward motion of the guide roll the axis thereof will be substantially horizontal because of the fact that the gudgeons 20 fit closely into the bearings 28. The open bearings 21 prevent lateral motion of the guide roll as viewed in Fig. 2 in known manner, The fact that the strap arms 2'! lie close to the inner surfaces 40 of the hangers 22 tends to resist twisting of the axis of the guide roll in a horizontal plane which might otherwise exist because of looseness of fit between the gudgeons 2i) and the open bearings 21. To insure this result the arms 2'! may be so constructed as to press against the surfaces 40. When'it is' desired to change the spacing of the guide rolls relatively to the breast beam the check nut 39 Will be slackened and the pin moved along to its new position, after which the check nut will be tightened.

I find that the invention hereinbefore described is particularly useful in the weaving of narrow Webs under an inch in width, but I do not Wish to be limited in the use of my invention to such webs, or to a narrow ware loom.

Having thus described my invention it will be seen that changes and modifications may be made therein by those skilled in the art without departing from the spirit and scope of the invention and I do not wish to be limited to the details herein disclosed, but what I claim is:

1. In a loom, a fabric guide roll from which project gudgeons, spaced hangers fixed with respect to the loom and having upwardly opening pockets to receive the gudgeons, a guard having closed bearings through which the gudgeons extend, and a vertical guide pin extending through and having guiding relation with respect to the guard, said guard being slidable upwardly relatively to the hangers and the pin serving to prevent substantial angular motion of the guard and gudgeons during upward motion of the guard and guide roll.

2. In a loom, a fabric guide roll from which project gudgeons, spaced hangers fixed with respect to the loom having upwardly opening pockets to receive the gudgeons, an inverted U-shaped strap having spaced parallel arms lying against the brackets and having closed bearings in the lower ends thereof through which the gudgeons pass, and a guide pin fixed with respect to the loom and passing vertically through the U- shaped guard, said guard being slidable vertically with respect to the hanger and the guide pin and said pin preventing substantial'angular motion in a vertical plane of the U-shaped guard and guide roll.

3. In a loom, a fabric guide roll from which project gudgeons, spaced. hangers fixed with h respect to the loom located one on each side of the roll, each hanger having an upwardly opening pocket to receive a gudgeon, a one-piece inverted U-shaped guard having spaced vertical arms, one arm on each side of the roll, through which the gudgeons pass, each arm of the guard lying between the roll and the adjacent hanger, and a vertical guide pin extending through and having guiding relation with respect to the guard, the latter being slidable upwardly with respect to the hangers and a pin preventing substantial angular motion of the guard and gudgeon' when said guard moves upwardly.

4. In a loom,,a fabric guide roll from which project gudgeons, a hanger fixed with respect to the loom and located on each side of the roll, each hanger having an upwardly opening pocket to receive a gudgeon, a guard having two spaced arms, one on each side of the roll, each arm pressing against a face of a corresponding hanger adjacent the roll, said arms of the guard having closed bearings through which the gudgeons extend,\and a vertical guide pin having guiding relation with respect to the guard, said'guard being movable upwardly relatively to the hangers with the arms pressing against said hangers and the guide pin preventing substantial angular motion of the guard and roll relatively to the hangers when'the guard moves upwardly with respect to the pin.

ELBRIDGE R. HOLMES.

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