Dec. 24, 1946. M. P. EPSTEIN ET AL 2,413,223 METHOD AND APPARATUS FOR- MOUNTING AND CONTR OLLING TENSION OF WARP BEAMS OF LOOMS Filed Sept. 11, 1944 3nventor MOSES P. EPSTEIN AND CLARENCE-R. BARTON Bu X. anormzg 2,413,223 " Patented Dec. 24, 194.3* UNITED STATES PATENT . orrics AND CONTROLLING TENSION OF WARP I BEAMS OF LOOMS Moses ‘P. Epstein and. Clarence 1!. Barton, New York, N. Y., asslgnors to Industrial Rayon Cor poration, Cleveland, Ohio, a corporation of Delaware Application September 11, 1944, Serial No. 553,586 5 Claims, (01. 139-101) ‘ 2 This invention relates to a method for equaly izing tension of warp fed to a loom from a plu rality of beams and to an apparatus for mounting the warp beams. . ' beam, tension is spread through the warp so thatv Y ‘ ' In a conventional beam rack, it is customary . to tension 9, warp by means of a rope wound around a beam head, one end of the rope being fastened to the rack frame and the other to a the ?nal warp sheet is substantially uniform in tension throughout its width. Generallyi in weaving tire cord fabric from tire cord of .1000 denier and higher, the cord is usu ally supplied from a great number of cones or spools which may number several thousand, mounted on a creel adjacent a loom. These cones or spools are limited supplies and must be pivotally mounted lever carrying weights. This frequently replaced in order to furnish a contin 10 braking system while effective on individual uous supply to the loom. Further, cord from beams is not entirely adaptable‘to a plurality of these cones or spools is usually individually ten beams. The warp is usually unwound in a some sioned by special tensioning devices. Where a what ierky manner due to the action of the loom. great number of cones are utilized, the uniform The tendency then of each beam of a plurality tensioning of all cord ends is extremely dif?cult of beams is to unwind unequal amounts, thus 15 to achieve and a lack of uniform tension is, of creating different tensions in the warp from dif course, re?ected in poor subsequent performance ferent beams. Braking of a plurality of beams ' of the woven cloth. The present invention may‘ by the slip-friction method does not of itself, be applied with particular advantage to the therefore, provide for a uniform warp tension‘ weaving of tire cord fabric. By utilizing a plu even upon a careful control of the braking 20 rality of beams to-supply cord warp, the inven weights due to variable frictional resistance of tion permits a weaving operation over a long each beam-braking means. period of time and the warp ends on such beams This invention provides a method of uniformly are readily adaptable to a simple and substan tensioning the warp threads from a plurality of tially complete and uniform tension control. For beams braked by a slip-friction type of braking a better understanding of the advantages of the means. Also, this invention provides an appa method and apparatus 'of this invention, refer ratus or a beam rack for mounting the beams in ence is made to the following description and such manner as to enable the practice of this drawing where: ‘ ' method. Generally, where a number of beams, Figure 1 is a diagrammatic elevation of a loom as for instance twelve or more are utilized, it 30 is desirable to mount them as near the loom as practicable and ‘in a series relation. The beams and beam-mounting apparatus; Figure 2 is an enlarged schematic plan view of are mounted six in a series, and in levels one over the top series of beams. the other. Mounting the beams in such manner permits the passing of warp threads off the last or most remote beam over a substantial part of the bered l0 through l5, and I6 through 2|, respec periphery of the next succeeding beam, combin ing it with the warp of the next succeedingbeam, xand so on until, ?nally, all warp from each beam of the series is gathered as a single warp sheet that is fed to the loom. The method of passing warp threads from one beam over a succeeding beam and interleaving it with the warp of the beam being passed over, - Referring to Figures 1 and 2, two levels of beams, each comprising a group of six, num tively,‘ are mounted in planes, one above the other. Beams l0 through I! rest in adjustable » open bearings 24 ?xed on vertical supports 25, while beams l6 through 2| rest in adjustable open bearings 28 ?xed on vertical supports 21. Vertical supports 25 and 21 are positioned inter mediate each other to facilitate the mounting of . beams in the bearings and bearing adjustment. Each warp beam head has a customary combining the warps, then passing such combined 45 weighted rope type of friction brake. The brake warp over subsequent succeeding beams, etc., usually consists of a lever 3|! pivotally mounted provides additional frictional control of each at one end on a beam support 25 as at 3| and beam, stabilizing the tension of the warp there carrying on its unsupported end a group of disc between, and thus neutralizing possible excessive - shaped weights 32. Rope 33, which may be sash. rotation of the individual beams when only the 50 cord or a leather strap, or any braking material, braking system is‘ conventional weighted rope used. Further, the tension on the warp from may‘ be fastened at one end onto the pivot 3|, passed around the beam head and fastened at its distant beams of a series of beams is generally other end to the lever 30. The weights.” exert equivalent to the tension on thewarp between a pull on rope 33 which frictionally prevents the any two subsequent beams, and the warp stretch 55 rotation of the warp beams. A single illustration is much less than that of long, unsupported, not of the slip-friction braking device is shown, al though each beam ||l through 2| is equipped therewith. Due, however, to the method em equivalent to the distance between adjacent ployed for equalizing ‘the tension of all warp, as beams which are positioned relatively near each 60 will be hereinafter explained, it is necessary that other. As the warp is gathered from beam to interlaid warp threads. This is so because the free length of any warp thread is substantially ' ‘2,413,293 3 , the beams of each series rotate toward each other. Because of such rotation, the braking de- . vice must be alternately placed on opposite beam heads, otherwise, the'weighted leverarwoulgl in terfere with each other. . 4 . tioned beams the warp'ot the beam being passed over, cumulatively adding the'warp of all subse quentsucceeding beams to the combined warp . from the beams .passed over as the combined . The slip-friction braking devices utilized do not of themselves provide for a uniform tension 01' the warp fed to the loom. Due to the action of the loom, warp is withdrawn from the beams in a somewhat Jerlw fashion. Such withdrawal 10 of the warp causes unequal braking since some beams will be retarded in rotation more than others, thus creating a variation in tension of the warp threads comprising the ?nal warp sheet. I By passing the warp of the last or most remote warp passes each subsequent beam periphery. and feeding said combined warp to said loom. 2. The method of supplying a uniformly ten sioned warp to a loom from a plurality of beams which comprises, mounting the beams in at least two levels, one over the other, each level being arranged in series relative to the loom, passing the warp threads from the beam most remote from the loom in each of said levels over a sub stantial part of the periphery of the succeeding ' beamv in the same level and adding to the pass beam over a substantial part of the periphery of ing warp the warp of the beam being passed the next succeeding beam, then joining the warp over, passing the combined warp over a substan of the succeeding beam, the cumulative warp then tial part of the periphery of the next succeeding being similarly passed over the next succeeding beam in the same level and adding to the com beam, etc., until the ?nal warp off the last beam 20 bined warp of the’ ?rst two mentioned beams the ‘ is comprised of the total warp threads of the warp of the beam being passed over, cumulatively entire series of beams, the tendency ‘of some adding the warp of all subsequent succeeding beams to overrun is substantially minimized. beams of the same level to the combined warp This method of interlacing warp threads of a from the beams passed over as the combined series of beams is particularly shown in Figure 2. warp passes each subsequent beam periphery, The direction of rotation of the beams is in combining into a single warp sheet the cumulative dicated in Figure 1 by the arrows'on the respec warp from each beam level. and feeding said warp I tive beams. Beam l5 rotates in a counterclock sheet to~ a loom. wise direction while beam it rotates in a‘clock 3. In combination with a loom, a warp feeding wise direction. The warp from beam I5 is led apparatus for rotatably supporting and frictional down and around beam l4, Joining the warp 30 ly restraining the rotation of a plurality of warp thereof._ The combined warp of beams i5 and beams comprising, means for supporting a plu II is led over the counterclockwise rotating beam rality of warp beams positioned in series relative l3 and interlaid with the 3warp of that beam; to the loom, the said means supporting said plu rality of warp beams so that the warp from the first unwound beam is adapted to be passed over I2; the accumulated warp is then led to beam a substantial part of the periphery of each next H and combined with-the warp of beam ii; the succeeding beam to frictionally restrain the ro enlarged combined warp is then further led over tation of said succeeding beams. beam l0 and between a pair of spaced rollers 40 4. In combination with a loom, a warp feeding 36, 31. The warp of‘ the lower series of beams apparatus for rotatably supporting and friction is through 2| is similarly handled. Warp un ally restraining the rotation of a plurality of warp wound o? beam [6, ‘being the cumulative total beams comprising, a ?rst beam-supporting means of all warp threads'oi'! beams I6 through 2|, is positioned in series relative to the loom, a second then the cumulative total is led down and around beam l2 and combined with the warp of beam also led between the spaced rollers 36, 31. ' The two warps are substantially combined be tween the rollers 36, 31, to effect a single warp sheet of substantially uniform tension. The warp sheet is then led to a loom generally indicated at 40 from whence it passes as cloth to be .wound on cloth roll 4|. _. ‘ v a 45 beam-supporting'means positioned in series'reia tive to the loom and on a different level than said ?rst beam-supporting means, the said means supporting said warp beams so that the warp from the most rearward beam of each level is 50 adapted to be passed over _a substantial part of the periphery Of each forwardly positioned next As shown in Figure 1, the lower of the two succeeding beam in the same level to frictionally series of beams is shown mounted slightly at restrain the rotation of said succeeding warp an angle, the angle between the series of beams beams. _ . diverging toward the loom. Such angular mount ‘r 5. In combination with a loom, a warp feeding 55 ing of the lower series of beams provides more apparatus for rotatably supporting and friction working space between the beams as the number ally restraining the rotation of a plurality of warp of warp threads increase. The arrangement of beams comprising, a first beam-supporting means the two series of beams can, of course, be a paral positioned so that the axes of the supported beams lel one. Further, a lesser‘ numbe'r'of beams can lie in a single plane and in series with the loom, be used in practicing the method described, or' a 60 a second beam-supporting means also positioned single series of beams can be used. ' We claim: 1. The method of supplyinga uniformly ten ' so that the axes of the supported beams lie in a single plane and in series with the loom and below said ?rst plane, said second plane being sioned warp to a loom from a plurality of beams at an angle to said ?rst plane, the said apparatus 65 which comprises mounting the beams in series supporting said warp beams so that the warp from relative to the loom, passing'the warp threads the most rearward beam of each plane is adapted - from the beam most remote from the loom over a substantial part ‘of the periphery of the suc ceeding beam and adding to the passing warp the warp or the beam being passed over, passing the combined warp over a substantial part of the periphery of the next succeeding beam and add ing to the combined warp of the ?rst two men to be passed over a substantial part of the pe Y riphery of each forwardly positioned next suc ceeding beam in the same plane to frictionally restrain the rotation of said succeeding warp beams. MOSES P. EPS'I‘EIN.' CLARENCE R. BARTON.