US1778284A - Apparatus for twisting yarn and thread - Google Patents

Description

Oct. 14, 1930. E. 'R. SWANSON 1,778,284

APPARATUS FOR TWISIIN G YARN AND THREAD Filed March 26. 1929 2 Sheets-Sheet l Oct. 14, 1930. E. R. S WANSON APPARATUS FOR TWISTING YARN AND THREAD Filed March 26, 1929 2 Sheets-Sheet 2 Patented Oct. 14, 1930 UNITED STATES PATENT OFFICE ERNEST R. SWANSON, OIF CRANSTON, RHODE ISLAND, .ASSIGNOR TO UNIVERSAL WINDING COMPANY, OF BOSTON, MASSACHUSETTS, A CORPORATION OF MASSA- CHUSETTS APPARATUS FOR TWISTING YARN AND THREAD Application filed March 2 6, 1929. Serial No. 350,075.

This invention relates to a novel and improved method of producing ply or cabled yarn and thread and consists in improvements in the apparatus for carrying out the process.

The present improvement consists in general in supplying the strands for twisting from cops, cones or other packages wound in multiple with the required number of ends and arranged to deliver over their ends with the packages magazined in series by tying them heel to toe; that is, with the last end from one supply connected to the leading end of a reserve supply, so that the yarns will deliver continuously while new packages are being creeled to replace the exhausted ones. i r

A particular object of the improvement is to provide for continuous delivery of the ends in multiple to the twister-spindles without requiring the stopping of the twister for dofling the exhausted supplies and replacing them with fresh ones, whereby the productive capacity of the twister is very materially increased.

Another object of the improvement is to avoid the doffing of all of the supplies for the numerous spindles on the twister at one time, as has heretofore been. required, which results in leaving considerable yarn on the dotted packages, amounting to a large quantity of waste or dead yarn in the aggregate and representing a capital investment which is a loss to the mill in which the process is practiced. I

Another object of the improvement is to provide a. twister frame having a creel from which the yarn delivers continuously to the twister-spindles without requiring repeated threading up through the thread-guides and feed-rolls, and on which the supply-packages may be more conveniently and expeditiously creeled while the twisting operation is under way.

Further objects of the improvement are set forth in the following specification which describes a preferred method of carrying out the new process and a preferred form of construction of the machine and apparatus used therewithas illustrated by the accompanylng drawings. Inthe drawings:

Fig. 1 is a part-sectional end view of a twister-frame provided with a magazinecreel for holding the supply packages which deliver the ends continuously to the twisterspindles;

Fig. 2 is a front View of a portion of the twister-frame and creel; and

Fig. 3 is a detailed view showing two of the associated supply-holders of the creel and illustrating the manner of tying up the ends of the packages thereon, and also the method by which the exhausted supplies are dotted and fresh packages creeled in their place.

In the present specification the invention is shown and described as applied to use with a ring-twister equipped for wet twisting, but it is to be understood that the improved process may be carried out on twister-frames of other types and styles. In Fig. 1 of the drawings, 2 designates the endmember of the twister-frame and 3 one of the intermediate cross-members or samsons which support the rails of the machine from the floor. The longitudinal side-rails 4 carry bolsters 5 for the twister-spindles 6 which are driven from a central drum or'cylinder v For wet twisting a water or emulsion trough 23 is employed at the rear of each set of feed-rolls with a suitable glass rod or brass roll 24 immersed therein to adapt the strands y to draw therearound to dampen the yarn. From the trough 23 the strands y lead forward over and around the-top-rolls 5 series .of thread-guides 26 for guiding the strands 'down to the wet-rolls 24 while imparting a lateral traverse thereto in the usual manner.

In carrying out the present improved process I may employ any suitable form of creel for holding the supplies to deliver their yarns over the ends of the packages with the latter magazined as previously explained. As a convenient form of construction I may employ a double creel supported from crossframes or brackets 28 fastened to cross-beams 29 carried on the samsons 3. The oppositely extending arms of the cross-frames 28 are provided with hubs 30 for holding the ends 26 of horizontally extending rods or pipes 31 which constitute the bottom supports for the creel frame. The creel frame may be constructed from piping with upright pipes 32 supported from the lower pipes 31 by means 25 of T-fittings 33 as shown in Fig. 2. The

upper ends of the upright pipes 32 are connected to longitudinally extending rods or pipes 34 by means of clamps 35 secured thereto by bolts 36. The uprights or pipes 32 '30 form the supports for the supply-holders to be later described.

Spaced along the center of the creel at intervals between the upri hts 32 are two series of parallel vertical ars 39 carrying 35 pigtail thread-guides 40. The vertical bars 39 may be constructed of strap metal, having feet 41 bent to overlie a horizontal board or shelf 42 supported on the cross-frames or brackets 28, the feet being fastened to the shelf by bolts 43 or other suitable means.

The upper bent ends of the bars or uprights,

39 are joined by straps 44 and connected to horizontally-extending pipes 45 by means of U-shaped clamping bolts 46. Extending be- 45 tween the inner and outer horizontal pipes 45 and 34 are suitable frames or struts 47 which act to brace and stiffen the whole structure.

In the present drawings the double creel is illustrated as adapted to supportsupply' packages of conical form, but it is to be understood that parallel packages or supplies of any other form may be used in place of the cones herein shown. In any case,

55 however, the supply packages are supported non-rotatably on spindles or holders which adapt them to deliver the yarn 'over their epds. In the present improved construction of thecreel the supply-holders 50 are ar- 60 ranged to pivot on the uprights 32 to adapt them to swingoutwardly at the front of the twister-frame to facilitate the dofling of the empty supplies therefrom and the creeling of new packages thereon.

. 65 As illustrated most clearly in Fig. 3, each supply-holder 50 comprises a hub 51 mounted to turn on the upright or pipe 32 and supported in position by a collar 52 secured fast to the pipe, see Fig. 2. Preferably, the hubs 51 have detent-portions 53 which engage suitable notches in the collars52 to maintain the supply-holders in operative position as illustrated in Fig. 3 of the drawings. Extending angularly from the hubs 51 are curved arms 54 provided at their ends with spindles 55 for insertion into the bores of the wooden tubes 56 which carry the yarn cops or cones C. The spindles 55 may be of any suitable construction as adapted for the particulartype of cop-tube or yarn-receiver used as the interior support for the package. As herein shown, the spindles 55 are in the form of skewers having prongs or detentlugs 57 at their ends which engage with annular grooves or recesses 58 in the bores of the wooden cone-tubes 56.

A preferred form of construction of a twister equipped with the magazine creel having now been described, the method of carrying out the improved process thereon will next be explained. in detail. It will be understood'that a plurality of yarn-cops or packages are supplied for each twisterspindle, and in the present drawings the double creel is illustrated as being provided with supply-holders arranged in pairs supported in tiers on the uprights 32. With the present type of twister-frame the feedrolls 19 and 20 are arranged in groups of five along each side of the machine, and the supplies for each group consist of ten yarn-cones C arranged in two rows between each pair of uprights, 32. That is to say, each of the end uprights carries five supply-holders 50 and each intermediate upright carries ten supply-holders, half of them projecting from one side and the other half from the opposite side.

Referring to Fig, 3 of the drawings, for convenience in creellng the packages or cones the supply-holders 50 are swung out into the position illustrated by dotted lines in this view and-the cones applied to place thereon by sliding the cone-tubes 56 onto the spindles 55 to engage the detent-lugs 57 with the recesses 58 in the tubes. After each package is placed onits supplyholder 50 the latter is swung back into'the position illustrated in full lines in Fig. 3 and the detent 53 on its hub 51 will engage with the notch in the collar 52 to hold it "in operative position.

When the packages or cones C are wound the first end of the strands, indicated at y in Fig. 3, is coiled in a groove or depression 60 at the base of the cone-tube 56 to provide a surplus length of yarn for splicing to the leading end of the next cone to be magazined. In' creeling the supplies the operator uncoils a suflicient length'of yarn y to tie to the leading end 3 of the next adjacent cone C in shown in Fig. 2, the strands y are threaded through the guide or pigtail 40 in line with the axis of the cone, see Fig. 1, and thence drawn down to the first guide 26 on the traverse-bar 25. From the guide 26 the strands g are led down under the rod or Wetroll 24, thence over and around the top-roll 20 and under the bottom-roll 19 to the guide 17 on the thread-board 16. From this point the strands y are drawn down to the traveler 12 on the ring-rail 10 and fastened to the bobbin 6. The strands from the next lower cone C are threaded in the same manner through their respective guide 40, down around the rod 24 and thence to the second pair of rolls which feed them to the next twister-spindle in the series, and so on with each double row of supplies, it being here noted that in the case of the second set of cones C and C the threading is shown as in reverse order withthe strands y delivering first from the left-hand cone instead of from the right-hand one. While this order is a matter of choice, the arrangement shown is preferable as it brings the two vertical rows 1 of reserve cones C in adjacent relation for convenience in dotting and'creeling up. That is to say, the first cones to be exhausted will be located in adjacent rows so that the operator need not move from one position to another in creeling a double row of cones after the ends start to deliver from the connected reserve cones.

It will be understood that with the arrangement as herein shown the supplies are wound in multiple, that is, 'with the required number of ends on each cone in accordance with the number of ply of the yarn to be produced. For some purposes, in creeling'and magazining the-supplies the ends are tied together with a bunch knot, but in other instances, to secure a high quality in the product the multiple ends may be separatedhnd tied individually at different points so as to avoid a bunch or enlargement in the finished yarn.

\Vhen the twister is started to operate, the multiplestrands 1 from the first set of cones C of the series will'be drawn ofl:' over the ends of the packages under the action of the feedrolls and fed to the twister-spindles 6 to be wound onto the bobbins b. Through the provision of the magazine creel having the 3 ends from the supply packages tied heel to toe a continuous delivery may be maintained it so that it is not required to stop the twister for dofling the empty supplies andcreelingfresh packages. I hat is to say, the strands for each twister-spindle will deliver first from the cone C and after the yarn on this cone is exhausted the supply will continue from the reserve cone C. After the yarn on the first set of cones C is exhausted the dofl'er passes along the front of the frame and swinging back the supply-holders 5O doffs the empty supplies therefrom and places fresh cones thereon. The leading ends of the strands from these new reserve cones are then tied to the last ends of the strands on the delivering cones, and preferably, the spliced ends are coiled about the heel or base of the cones to take up the slack.

As the twisting operation continues and the yarn is exhausted from the second set of cones C the last-creeled supplies will commence to deliver so that another set of reserve cones may be creeled, and in this way a supply of yarn is always maintained for each twister-spindle during the continuous operation of the machine.

Heretofore in the present art it has usually been the practice to stop the twisting operation to doff the exhausted supplies and creel and tie up the ends of the new cops or packages. The creeling of a large number of supplies necessarily requires considerable time to accomplish and therefore the twisterframes must be stopped for relatively long periods which occur at frequent intervals. This stopping for dofiing and recreeling very materially curtails the productive capacity of the machine. Furthermore, and quite as serious, the previouslv used practice of stopping the machine for dofiing and recreeling results in a loss of yarn. As well known, all of the supply-packages do not contain the same'amount of yarn and due to this and other conditions the ends will not run out all at the same time. When the first supply runs out a very considerable amount of yarn may be left on certain other supplies and as all of the packages are dofled at the same time this results in leaving a large amount of yarn ;on the containers as waste or dead yarn.

In some cases the yarn remaining on the packages is rewound while in other instances the new packages are wound over the dead yarn so that in either case there is a loss. In

the case where the dead yarn remains on the packages for repeated handlings it represents a certain capital investment which eliminating the stops for dotting and recreeling with a consequent increase in the productive capacity of the twister, the present invention provides for using up all of the yarn on the cops or packages so that the loss from waste or dead yarn is entirely done away with. For these reasons the present improvement provides important economies in the process of twisting ply or cabled yarn to attain the advantages and economies hereln cones or packages to adapt the yarn to deas they become exhausted, this practice neces-' sitating that the operator be at the proper location as the supply runs out. It is impossible, however, for an operator tending a large. number of twister spindles to always reach a supply at the instant that it runs out and therefore it is the common practice to' doff a group of supplies before'the yarn on all of them, is entirely exhausted. As in the former case this practice also results in waste yarn.

With the present improved process the operator is not required to move back and forth from one location to another to'reach the supplies as they run out, but is allowed a liberal period of time to creel the reserve supplies in regular order while thelast-creeled supplies are running. For this reason the operator can tend more spindles, thus reducing the labor cost/ It is believed that the present improved process is the first to provide for twisting yarns from magazined supplies with the delivery maintained continuous to eliminate stoppages for dofling and recreeling, whereby set forth. Therefore, the invention is herein claimed broadly without limitation as to the apparatus employed in carrying out the process,

WVhile I have herein illustrated a preferred form of the apparatus, including a double magazine creel applied to the twister-frame, it is to be understood that various modifications may be made in the form and construction of the machine and with respect to the method of carrying out the improved process.

Therefore, without limiting myself to the a having opposlte rails, twlster-spindles rotatparticular form of construction shown or to the precise method described, I claim:

1. Animproved twister-frame comprising a plurality of twistefipindies, feed-rolls for feeding thestrands tothe twister-spindles, and a creel for holding non-rotatable cops,

liver over the ends thereof, said creel being provided with a plurality'of thread-guides through which the strands draw to direct them to the twister-spindles, a plurality of supply-holders arranged with the axes of two associated holders in asubstant'ially horizontal' plane and directed toward a single thread-guide to adapt the packages to be magazined to deliver the yarn first-from one packageand then from another to maintain a continuous delivery to all of the spindles without arresting the operation of the twister to dofl the exhausted supplies and recreel -fresh supplies, and means for hingedly mounting the supply-holders to adapt them to turn about vertical axes whereby they may be individually swung outwardly at the front of the frame to facilitate-dotting the exhausted packages and replacing them with fresh packages.

2. A twister-frame comprising twisterspindles, means for feeding multiple ends to the twister-spindles to produce a yarn therefrom, a creel comprising a framework, a plurality of thread-guides supported in rows on said framework, and a plurality of supply-holders hingedly mounted to swing about vertical axesat the front of the framework and arranged in pairs with the axes of two associated holders directed toward a single thread-guide, said supply-holders adapted to be individually swung out into position above the twister-spindles to facilitate the doffing of the supplies therefrom and the recreeling of fresh supplies thereon.

3. A cwister-frame comprising twisterspindles arranged'in rows on the opposite sides of the machine, pairs of feed-rolls arranged above each'spindle to adapt them to deliver the multiple strands thereto, and a creel arranged above the frame, said creel provided with a support carrying rows of thread-guides of a number equal to the number of twister-spindles, and supply-holders ranged in pairs with the axes of two associated' holders directed rearwardly toward a single thread-guide to adapt the strands to feed continuously first from one supply and then from another and to be guided toward the center of the frame and thence downwardly to the twister-spindles, said supplyholders being hinged on vertical axes to adapt them to be individually swung outwardly from the front of the creel to facilitate dofl"- ing the exhausted supply-packages and re creeling new packages in their place.

4. In a twister, the combination of a frame ably supported on the rails at either side of the machine, ring-rails co-operating with the twister-spindles, feed-rolls arranged at opposite sides of the machine with a pair of rolls for each spindle, a double creel having vertical standards at the center of the frame,

thread-guides supported in rows on said.

them to be individually swung forwardly into position over the twister-spindles, said supply-holders beingarranged in pairs and normally held in position with the axes of two associated holdersdirected toward a single threlad-guide on the central upright of the cree 5. In combination with a twister-frame, standards at the opposite ends of the frame,

rods extending horizontally between said standards on opposite sides of the frame, uprights supported from said rods and arranged in spaced relationship along both sides of the frame, supply-holders pivoted on said uprights to adapt them to swing in horizontal planes and provided with means for supportmg yarn-cops, a series of uprights extending in spaced relationship along the center of the frame, thread-guides mounted on said lastnamed uprights, and detent-means for normally maintaining the supply-holders with the axes of two associated holders alined with a single thread-guide whereby the yarn from the packages carried thereon may be caused to deliver first from one package and then from the other package with a continuous delivery, said detent-means being releasable whereby the supply-holders may be swung outwardly at the front of the frame to facilitate dofiing the exhausted yarn-packages and creeling fresh supplies in their place Without interrupting the operation of the twister-frame.

In testimony whereof I hereunto affix my signature.

"ERNEST R. SWANSON.

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