US2185621A - Direct warping - Google Patents

Description

Jan. 2, 1940. R. H. BALcH Er Ax.

DIRECT WARPING Filed Nov. 30. 1957 \NvE ToRs RALPH H. BALCH THOMAS c. CAMPBELL BY JAMES LGRANT ATTORNEYS Patented Jan. 2, 1940 MTENT orricc v DIRECT; WARPING Ralph HBalch, Thomas C. Campbell, and James -L. Grant, Cumberland, Md., assignors to Celanese Corporation of America, a corporation of Delaware Application November 30, 1937, Serial No. 177,212

l 1 Claim.

This invention relates to textile machinery, and more particularly to a method of and a machine for the production of warp beams and like packages of yarns or threads. It is an object of this invention to produce, in a rapid and expeditious manner, warp beams and like packages of yarn or thread ymade 'of or' containing line nlaments, silk laments.

A further object of this invention is the production of warp beams and like packages of yarn or thread by taking off the yarn or thread from particularly artificial suitable supply packages carried on a support,

i. e., a creel, and winding the yarn orthread directly on the beam of the `warping machine.

Other objects .of this invention, together with certain details of construction and combinations of parts, willbe described in the following specildei-mite warp l section pattern.

with the present invention the advantages of the fication'and pointed out in the appended claims. Heretofore in the production of warp beams in vthe synthetic yarn artificial silk industry, the practice has been `on the silk system of warping to build -the Warp sheet in sections on a warp mill, Forexample, the yarns were drawn from supply packages on a creelk through a condenser reed and a spacer reed onto a large reel rotated by suitable driving mechanism from` `which it may be disconnected when desired. When the desired lengths of yarn were wound on the warpmill in the form of a narrow band, the reel was released fromits driving mechanism andthe yarns cut. The bandsof yarn were then unwound from the reel onto a bobbin or beam and formed one section of the warp. v Two to twenty or more of such sections made up the linal warp sheet. On the cotton system of warping which is also in common Usein the synthetic yarn industry, the warps are madeby winding several hundred threads from cones, spools, or similar packages onto Wide beams, or spools: called section beams. These beams are mounted on a frame or Creel behind the Slasher or -warp sizing machine andv thereon combined into one sheet andwound ontov a yloom beam forming a partl cotton system oinwarping, particularly its low cellulose or cellulose ethers. In acco-rdancel cost, is obtained and at the same time all of the advantages inherent to the silk system of warping are retained. n

Many attempts have been made to overcome the necessity of forming warps in apluralityof sections. These attempts were not commercially feasible for one reason or another. For exam.- ple, it has been proposed to use cone creels for avoiding the production of the Warp in sections. However, these conecreels, besides being costly and 'taking up a large amount of floor space, require an additional and expensive processing step, namely the coning of the yarn from the spools. j

In accordance with the present invention, there is provided a simple and effective mechanism for forming warp beamsoi yarns or threads of artificial filaments at less cost than has heretofore been possible and with the requirement of little care or expert attention. y

In accomplishing the desired result, it is preferred to mount the spools or other supply packages upon a creel arrangement which permits of no contact between the ends in the several sheets of yarns or threads coming tluerefrom. Thev ends from each bank are led over a roller guide,

preferably made up of a series of individual rollers each carrying t-he yarn or thread from yone row of supply packages, then, if desired, through drop wires for operating a suitable stop motion device, and through a reed to the leasingmechathe handling of the yarns or threads in anovel nism. The ends are then passed through a standard loom reed, over a guide roll and onto the warp beam. I v

This invention isy particularly applicable to the forming of warps from spooled yarns or threads made of or containing fine :filaments of silk, reconstituted or regenerated cellulose and/or organic derivatives of cellulose. The4 organic derivatives of cellulose may be organic esters of Examples of organic esters of cellulose are cellulose formate, cellulose acetate, cellulose propionate and cellulose butyrate, while examples of cellulose ethersv are methyl cellulose, ethyl cellulose and benzyl cellulose.

In the accompanying drawing the figure is a perspective view showing the warping machine and creel arrangement of this invention.

The warping machine comprises a main frame l having an upright portion 2 at one end thereof. Journalled in suitable bearings on the main frame is the shaft of a warp beam 3 which is rotated in the usual manner, as by means of a motor t and variable speed drive 5 through a clutch arrangement 6. The warp beam is also provided with a ratchet wheel and pawl arrangement l for maintaining the correct warp tension,and with a braking mechanism 8, as is well understood in the art.

'I'he ends g to be wound on the warp beam 3 are drawn from supply packages of any type, such as spools ii which are arranged in rows on each side or bank of an inverted-V creel l2. In the modification shown, two of such creeisare employed. It is to be understood, however, that wherev a warp having a number of ends greater than the number which can be supplied by two inverted-V creels, which is about 2500, is desired, it is only necessary to add one or more additional creeis. Each of these creeis is placed at a slightly higher elevation than the one immediately adjacent to the warping machine in order to prevent chaiing of the yarns or threads due to` contact therebetween.

Each of the banks on each Creel is provided with a roller guide I3. Preferably the roller guide is made up of a series of individual rollers each of which is adapted to carry and guide the ends from one vertical row of supply packages H. The ends 9 pass from rollers i3 through reeds l 4 which preferably have glass dents. The sheets of yarns or threads 9 as they leave the reeds ill are substantially parallel and out of contact with each other.

The ends 9 are then passed through a leasing mechanism, generally indicated by reference numeral I5, which is housed in the upright portion 2 of the frame l. The leasing mechanism comprises harness shafts i6 and heddles i1 which may be provided with porcelain, glass or steel eyes, as is well understood in the art.`

The harness shafts Hi are raised against the action of springs i8 by means of lines iQ fastened to said harness shafts.

lever 23 through connecting rod 2d pivotally attached to levers 22 and 23. The leasing mechanism is adapted to be operated to provide for the crossings or leases in the warp sheet.

All of the warp ends are then passed through a standard loom reed 25, which may be adjustably mounted on the warping machine, and over guide roll 26 which is adapted to rotate and to oscillate or have axial movement, as is well un-v These lines are passed` over pulleys 2l and are attached to a lever 22 pivoted at 22', which lever is operated by hand of inserting an end and end lease which requires less time than heretofore found necessary.

Another advantage of the warping mechanism of this invention is that with the leasing mechanism employed, i. e. harness shafts and he'ddles, there is less liability of damage being done to the yarns or threads than with thelease rods and reed employed in prior practice. Furthermore, the leasing mechanism ofA this invention permits of heavier constructions at relatively higher speeds than is practical with the standard leasing devices.

The mechanism described herein performs the desired function in an extremely expeditious and eicient manner, yet it isA simple and inexpensive to construct and doesnot require expert atten-v tion to keep the same in running order.

It is to be understood that the forego-ing detailed description is merely given by way of illustration and that many variations may be made therein without departing. from the spirit of our invention.

Having described our invention, what we desire to secure by Letters Patent is: 1

Warping apparatus comprising means for driving a warp beam, a plurality of harness shafts disposed between the beamand a yarn creelv for guiding yarns to the beam in the form of a plurality of superposed sheets, one sheet for each' shaft, and means for raising and lowering said"v shafts, said means comprising two sets of con nections: to the shafts so arranged ythat one operation of the raising and lowering means brings the plurality of warp sheets into two sets be' tween which a lease cord may be inserted, anv' other operation of the raising and lowering means transposes the two sets kof warp sheets for the insertion of a second lease cord, and afurther operation restores the warp-.sheets to their'y original position, the said connections to the shafts being operated by opposite ends of a lever so that an upward movement of shafts connected to one end of the lever is accompanied by aA downward movement of shaftsconnected to the other end of the lever, the lever being provided z with means by which it may be rocked to both sides of a mean position for the insertion of. the two lease cords and returned to the mean position.

RALPH H. BALCH. THOMAS C. CAMPBELL. JAMES L. GRANT.

Images