US1311788A - Slue-remover - Google Patents

Description

E. l. ABBOTTr SLUB REMOVER.

APPLICATION FILED rIov. III ISIL.

1,31 1,788. Patented July 29, 1919.

5 SHEETS-SHEET l.

E. J. ABBOTT.

SLUB REMOVER.

APPLICATION FILED Nov. II, Ism.

E. j. ABBOTT.

SLUB REMOVER,.

APPLICATION FILED NovA II. IQIII.

L31 1,788. Imfented July 29, 1919.

5 SHEETS-SHEET 3.

E. J. ABBOTT.

SLUB REMOVER.

' APFUCATION FILED NOV. H, Iglu- 1,31 1,788. Patented July 29, 1919.

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E. J. ABBOTT,

sLuB REMovER.

A APPLICATION FILED NOV- Il, 19H1- 1,3 1 1 ,788. Patented July 29, 1919.

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l I l I l most textile processes.

.i UNITED sTATEs PATENT oEEIcE.

EDWARD JAMES ABBOTT, or wILToN, NEW HAMPSHIRE.

sLUB-REMOVER.

Specification of Letters Patent.

Patented July 29, 1919.

Original application filed January 28, 1914, Serial No. 815,088. Divided 4and this application illed November 11, 1918. Serial No.v 261,973. l

To aZZI'wLom it may concern.'

Be it known that I, EDWARD JAMES ABBOTT,

citizen of the United States of America, and

resident of Wilton, in the county of Hillsborough and State of New Hampshire, have invented new4 and useful Improvements in- Slub-Removers, of which the following is a specification.

This invention relates to devices for detecting and removing slubs and abnormalities from yarns, threads, or other cordage, hereinafter generically referred to as yarn Heretofore, in all of the textile arts, slubs, snarls and bunches, knots too large for passage through the reed-dents or heddle-eyes of looms, the eyes or hooks of needles and other small guiding passages of machinery yintended to work upon the yarn, and all other obstructions serving to enlarge or'encumber the yarn and make its automatic handling by machinery impracticable or troublesome (hereinafter generically referred toas slubs) have been dealt with by hand only, or by machinery stopping short of automatic function to relieve a length of yarn of the slub.

Dependence has been upon yarn-cleaners, so-called, for automatically rubbing, scraping 0r slicing off of arn run past them such adhesions as could be rubbed, scraped,

ground or sliced off of the yarn without breaking its continuity, such clearers sometimes being incidental to automatic machinery and comprising automatic devices for stopping the machiner and the running past of the yarn, (or for reaking the yarn to induce stoppage) Whenever a knot or slub occurred.

' But heretofore thetreatment of the yarn to cure it of a serious slub has involved the attention of an operator manually to sever the yarn, to remove the slub, and to rejoin the yarn, and the stoppage of the machine during these operations. The expense of labor and time for removing slubs and piec ing-up yarns has been a serious burden on It has resulted in limiting the periods of continuous operation of winding, reeling, warping, balling, sewing, knitting or other continuously-operating automatic yarn-handling machines dependent upon a continuous supply of yarn free from slubs..

learly stage in the manufacture, but this does not avoid the labor and loss of time required to cure the defects of the yarn. This winding, balling or spooling stage, with its attendant piecing-up of ends and removal 'of slubs, accounts for about 25% of the wholel labor cost of yarn in the best practice of which I am aware.

Principal objects of my invention are to avoid machine stoppage, breakage of yarn and delay by providing for the automatic removal of slubs; to provide means for this purpose adapted for use either atthe Winding or packaging stage of manufacture, or at any passage by such means of the yarn, such as at the entrance of the yarn into a machine using it, or in or at exit from a machine treating it, and therefore .to avoid packaging, rewinding or inspecting the yarn for the sole purpose of freeing it from slubs. Further objects are to provide automatic means for detecting and removig slubs, to provide automatic means for removing from the yarn a section containing a slub, and for joining the ends left by the removal of such section into a continuous length, and to rovide automatic devices for removing s ubs adapted to knot together the ends of yarn from which a section lcontaining a slub has been severed.

I have herein shown and described the invention, for one instance only of its applications, as combined with and forming a part of an automatic winding machine having a replenishing mechanism includinga yknot-tying mechanism for joining or plecanisrn,

of Fig. 1;

cation is a division, and l do not herein claim said winding or replenishing mechnor show and'describe more of said mechanism than is necessary to an understanding of the present invention.

The accompanying drawings illustrate as a preferred embodiment one species only of the genus comprised by the invention particularly adapted for use with my said winding machine. ln the draWings,`-

Figure 1 is a side elevation partly in section illustrating the application of devices corresponding to the invention for the removal of slubs during continuous operation of an automatic replenishing winding machine;

Fig. 2 is a central vertical section through the yarn supply creel hereinafter referred to;

Fig. 3 is a section on an enlarged scale, on the line 3-3 of Fig. 6;

Fig. 4 is an enlarged detail vertical section through the devices at the upper part Fig. 5 is a detail plan partly in section on line 5-5 of Figs. 3 and 6 showing the knottier and yarn-guides;

Fig. 6 is a front elevation of the devices of Fig. 3; I

Fig. 7 is av diagram showing electrical connections;

Figs. 8, 9 and 10 are diagrams illustrating the operation.

Referring to the drawings, 1 represents the usual holder for t-he quill or other yarn receiver 2, on which the yarn or thread 3 is wound into a cop or cheese 4. The cop or cheese 4 rests upon a drum 5 and is driven by frictional engagement of the drum with the surface of the cop. The drum 5 is fixed to a shaft 6 which the lusual mechanism, not shown, from the main shaft 7 of the machine. The main shaft 7 is also connected lby the usual mechanism, not shown, with the usual cam shaft 8 which carries a cam 9 for actuating thread-guide 10. rl`he foregoing parts are of the usual construction, and it will be understood that the thread-guide 10 is reciprocated lengthwisel of the cop on its guiderods 11 and 12 by means of cam 9, while the cop 4 is rotated by the drum 5. The mechanism thus far described is an example of winding machines in common use, and may if desired also include the usual automatic device, not herein shown, for stopping the Winding operation when the cop has grown to a predetermined size, orwhen the yarn breaks.

The yarn is supplied to the cop or cheese 4 from a supply carrier, herein shown as a rotatable creel 13 (Figs. 1 and 2), provided with a series of spindles-14 in annular arrangement on the upper side of the creel to receive a plurality of bobbins of yarn or other supply packages 15. rlhe creel means 4.0, 4.1, r2, 4.4,

is driven through` :the path shown in Fi which is narines 13 as herein shown consists of a circular table rotatably mounted on a central hollow post 16, which is fixed at its lower end in a socket at the top of 'bracket 17 and therein fastened against rotation by a pin 18. The post 16 is made hollow 'to receive the wiring for one of the electro-magnets hereinafter described. To the hub of creel 13 is fixed the lower end of a sleeve 19 surrounding the post 16 and carrying at its upper end a hollow cylindrical head 20.

By means of devices not necessary fully to explain herein,`,the creel and head 13, 20, is rotated upon detection of breakage of the active yarn 3 by .that one of a series of circuit-closing detectors 31 shown at the left in Figs. 1 and 2 acting through the circuit 120, 121, 30, electromagnet 27, to operate a detent 23 to release toothed flange 21 for movement of the creel 'by friction actuating driven by belt 45 from pulley 46 on shaft 7. Each bobbin 15 may in turn supply the active yarn 3 as it is brought to such position by rotation of the creel 13, 20, the ends of yarn from 'bobbins 15 not actively `unwinding each being threaded through a detector 31 and a guide 33 and being wrapped around a. hitching post 39 vertically above each bobbin, detector and guide 38. rlhis mechanism, in connection with a knot tier mechanism presently described,

constitutes automatic replenishing mecha-- nism adapted to tie the yarn from a fresh bobbin 15 on to the exhausted or broken end of the yarn 3 'being wound on the receiver 2. When replenishment-takes place the direction of rotation of the creel is such that the 'bobbin 15 and vertically laced end of yarn extending from 38 to 39, illustrated at the left of Figs. 1 and 2, move away from the observer, the vertical run of yarn thereby entering between a curved guide 83, (Figs. 2 and 5), and a coperating detector 79, and between an arm 86 and arms 98. 99, the yarn entering between these devices, presently to be referred to in detail, on a path concentric with the center of rotation of the creel 13, 20. The active yarn 3 takes 5 during winding. The mechanism in icated generally at 47 in Fig. 1, is shown in detail in Figs. 3 to 6 inclusive. This mechanism comprises a boxlike frame 52 mounted on the machine frame, in which is journaled a hollow shaft- 53 which carries three cams 54, 55 and 56. and also a gear 57. The hollow shaft 53 is normally at rest, but when actuated as presently to be described, it makes one revolution at the completion of which it is automatically stopped. Through hollow shaft 53 extends a continuously rotating shaft 57 on which is fixed a ratchet wheel 58. 'l` he shaft 57 is driven by a pulleyv 59 (Fig. 1) connected by a belt 60 with a pulley 61 fast on the main driving shaft 7. The ratchet wheel 58 coperates with the pawl 62 pivoted to the cam 54. Said pawl 62 is normally held out of engagement with the ratchet wheel 'by a hook 63 at the lower end of connecting rod 64. The lower end of the connecting rod 64 is normally held so that its hook 63 supports the pawl 62 in inoperative position by means 0f a latch 65 pivotally on a. shaft 66 journaled in the frame 52, and a link 67 pivotally connected to the lower end of the rod 64 at 68, and at its upper end pivotally connected to the frame 52 at 69. Vhen the latch 65 is disengaged from rod 64, the rod is shifted endwise by a spring 70 in the direction of the ratchet Wheel 58, thereby permitting the continuously rotating ratchet wheel to pick up the pawl 62 and carry the latter together with the cam 54 and shaft 53 around with it. The lower end of the rod 64 is forked, and within the fork is mounted a roller 71 engaging cam 54, so that at the completion of one revolution of the shaft 53 and cam 54 the latter pushes the rod 64 outward, thus carrying the shoulder 72 on the rod past the nose of the latch 65 which drops into place under the shoulder and locks the rod 64 again in its original position with the spring under tension. When rod 64 is thus lifted, its hook 63 draws pawl 62 away from the ratchet wheel 58, thereby stopping further rotation of the shaft 53.

To operate the latch 65, a notch 73 is provided which is occupied by the free end of an armature 74 pivoted at 75 on the frame 52. The armature 74 is operated by an electromagnet 76, whose winding is in series with eleetromagnet 27 within the creel head 20, so that whenever a yarn detector 31 drops and closes the circuit through electromagnet 27, the electromagnet 76 will be simultaneously energized, whereupon the armature 74 will be raised, lifting the pawl 65 and releasing the rod 64 at the same instant when the creel 13 is freed from the detent 23. Thus, whenever the magnet 76 is energized, or when the supply of yarn ceases from a bobbin which for the time being is supplying the cop or cheese, the mechanism is automatically operated, which occasions the step-movement of the creel to present a fresh bobbin to operative position and to cause one revolution of the shaft 53, which in turn stops the winding mechanism and operates the knot-tying mechanism for connecting the leading en d of the fresh bobbin with the following end of the yarn passing to the winding mechanism in theV manner hereinafter described.

As shown in Fig. 1, actuation of the rod 64 by the latch 65 may serve to stop during one revolution of the shaft 53 the rotation of the winding cop or cheese 4, the device shown comprising the usual shield 77 pivoted on 'shaft 6, and pivoted to one end of rod 64 so as to be moved under the cop 4 to lift. it from drum 5 and act as a brake, during such time as rod 64 is displaced to the right by spring 70. Latch 65 also is free to be moved by hand, or by other desired or usual automatic devices, as through shaft 66 and handle 66', for instance by a connection from any type of full-cop or yarn breakage or yarn-tension actuated stop motion detector acting on the yarn 3 between the mechanism 47 and the cop 4 (not shown) as will be understood by those familiar with winding machines of this general class.

So far as described, operation of a detector 3l by exhaustion or breakage of yarn 3 will result in energizing electromagnets 27 and 76 to occasion movement of the creel 13, actuation through one revolution of shaft 53, and stoppage of winding of yarn 3 during motion of shaft 53. The clrcuits con-- taining magnets 27 and 76 are so arranged as to permit magnet 76 only to be energized for the purpose of actuating the mechanism 47 to tie a knot without necessarily moving the creel 13. By this pl'ovision a slub can be detected and removed without changing the unwinding package or bobbin, but without preventing the action of the replenishing mechanism if the operation of removing the slub should result in operating one of the detectors-31 by breakage of the yarn under treatment.

In Fig. 7 I have illustrated diagrammatically the wiring and electrical connections for controlling the mechanisms hereinbefore described. The battery or source of electrical energy is shown at 122. One pole of the battery 122 is connected by a wire 119 with one end of the winding of electromagnet 76. The other end of the winding of electromagnet 76 is connected by wire 120 with one end of the winding of magnet 27. The other end of the winding of magnet 27 is connected by wire 121 with the conductor segment 30. The opposite pole of battery 122 is connected by wlre 123 with the frame of the machine, on which the shaft 53 and detectors 31 are grounded. A slub detector 78 is insulated from the frame 52 and is connected by'a wire 124 with the wire 120. It will thus be seen that when the detector 78 is operated by a slub and makes contact with the hollow shaft 53, the circuit is closed only through magnet 76, but when the detector 31 is operated by the exhaustion of the supply of yarn and makes contact with conductor segment 30, the circuit will be closed through both magnets 76 and 27.

The mechanism for curing the yarn of ward and downward runs being in proximity; by detecting the presence of a slub on its approach to this bight or loop; and by causing such detection to set 1n motion means to bring together both legs of the bight or loop (now including the part of the yarn bearing. the slub) in a. knot-tying mechanism adapted to tie together the legs of the loop and sever the loop and conta-ined slub from the tied yarn. As shown, the mo tion of the mechanism set in action when a slub is detected takes place during stoppage of running of the yarn by stopping rotation of the winding package 4.

Completion of the cycle of action of the devices set in .motion upon detection of a slub comprises resetting all of the parts for a new cycle of operations before and during resumption of winding effected. automatically by cam 54 during the motion of the mechanism 47 through a cycle of one revolution of shaft 53. While this arrangement is preferred, it will be observed that the method of and means for tying out and severing off a loop of yarn containing a slub are independent of cessation of motion of the yarn past the deviceslso long as enough yarn is supplied to the knot-tier for its use during its exceedingly rapid operation to tie out and sever off a bight or loop in which the slub' isV included; and the arf rangements hereinafter mentioned for forming and handling a biglit can be depended upon to supply enough slack for knotting, so that stoppage of the active yarn is not required, although preferred. The time takeny by stoppage at the package 4 and removal of a slub is inconsequently short compared with the time required to wind the package 4 or to tie out and cut' off a slub by hand, and particularly, as compared with the idle time of a winding or 'other textile machine stopped by a slub and waiting for the attendant to notice the stoppage and correct its cause.

The slub detector is shown at 7 8 (Figs. 2, 3, 5 and 6) and comprises a normally horizontal arm 79 and a relatively heavy upright arm 80 which acts as a counterweight. The detector 7 8 is pivotally mounted upon but insulated from rod 81 fixed at its ends in the lframe 52. The weight of arm 79 is sufficient to hold .the detector normally against a stop 82 of insulating material projecting from the frame 52 while the free end of the yarn 79 occupies a coperative relation with the abutment 83, which may also be of insulating material, fixed to the frame. The yarn from the bobbin or bobbins supplying the cop passes from the creel through the clamp at the outer ends of the 7arn detector arms 31, thence through the guiding eyes 38, and thence over a guiding pin 118 (Figs. 2, 3 and 6) and between the abutment 83 and t-he slub detector arm 79. The space between abutment 83 and arm 7 9 will pass normal yarn but a slub can not pass without moving the arm 7 9. From the slub detector the yarn passes upwardly over a bightor loop-forming guide .in the form of a porcelain knob or roller 84, carried by and projecting from the side of a sprocket chain 85. From the loop-forming guide 84 the yarn passes downwardly around an arm 86 and through a guiding eye 87 fixed to the frame 52, and thence to the thread-guide 10 of the winding mechanism.

lVhen a slub or otherbunch in the yarn strikes arm 79 of the slub detector, the latter is thrown backward until the arm 80 overbalancing the arm 79 makes contact with the hollow shaft 53, thereby closing the circuit through electromagnet 76 stopping the rotation of the cop 4 and causing the shaft 53 to make a single rotation, as above described, without actuating creel 13. rlhis revolution of the shaft 53 acts through mechanism to be described, to remove from the yarn a length or section containing the slub, to tie together the severed ends of the yarn formed by the removal of the slub, and to restart winding. As thev shaft 53 approaches the completion of .its single revolution the cam 55 engages arm 80 and restores-the slub detector 78 to its normal position.

Upon the top of frame 52 is fastened the lower end of a hollow or tu'bular casing 88, the lower end of which is open. The upper end of the hollow casing 88 is connected by a pipe 89 with a main suction pipe 90, in which a suction of air is maintained by a blower or other suitable device, so that a strong current of air is constantly flowing upward through the hollow casing 88. The chain 85 above referred to carrying the loopforming guide 84 is mounted on two sprocket wheels 91 and 92, the former being journaled on a shaft 93 near the upper end of the tubular casing 88, and the latter being fixed to shaft 94 which is journaled in bearings on the frame 52. The shaft 94 carries a pinion 95 (Fig. 3) at one end in mesh with the gear 57 on hollow shaft 53. The ratio between the gears is such that when the shaft 53 makes one complete revolution the sprocket wheel 92 will be driven, in the direction shown by the arrow in Fig. 3, a sufiicient distance to move the chain 85 once completely around its path so that the loop-forming guide 84 will make one complete circuit and stop at the point from which it started. Normally the guide 84 on the chain occupies the position shown in Fig. 1 at y, so as to maintain a loop of considerable length in that part of the yarn passing from the supply bobbin to the cop, which is between the detectors and the tying and cutting mechanism.

The arm 86 is loosely mounted on a vertical rock shaft 96, but is connected with said shaft through a spring 97 which normally 102.0n the frame 52. The rock shaft 96 carries a pair of arms 98 and 99 one above the other, and at its lower end carries a laterally projecting cam roll 100 which is held against cam 56 by a spring'lOl connecting a lever on arm 99 with the frame 52.

When the creel 13 is actuated for replenishment to advance one step, one of the taut stretches of yarn on the head 20 of the creel is carried into the flaring space between abutment 83 and arm 79 of the slub detector and between the two arms 86 and 98 and behind the arm 99. Immediately thereafter the cam 56 acts through cam roll 100 to rock the shaft 96 and swing the two arms 98 and 99 in the direction of the mechanism 47 so as to carry that stretch of the yarn which vswing the arm 86 with it as a single part to the limit of movement in the direction of the knot-tying and severing devices.

When the magnet 76 is energized by operation of the slub detector, the same movements take place. As shown in Fig. 8, a slub .e on the yarn 3 is about to engage the detector arm 79. The motions of the shaft 53 consequent on this engagement bring the parts to the position shown in Fig. 9, the arms 86, 98, 9 9, having swept the legs of the bight of yarn extending from 84 to 86, 98, into engagement with a rotating knetter 105, 111, 107, 112, and theguide 84 having begun to recede by motion of chain 85 to slacken the loop containing the slub z now engaged with the knetter and in process of being tied. Subsequently the loop hanging on guide 84 is severed at the knotter, and is then withdrawn by the air blast. When the knot is formed, the arms 86, 98, recede together until the pin 102 engages the arm 86. This motion strips, the knot from the knotter, in which the severed ends are clamped, Sets up the knot, pulls the ends out of the knotter, and leaves the now running rejoined yarn between detector 78 and guide 87 to be engaged by the guide 84 on the passage upward. Meanwhile cam 55 resets the detector 78.

Referring now to the knot-tying and yarn-severing devices contained in the head 47, 103 represents a bushin fastened by a screw 104 in a hole provide therefor in the frame 52. Within this bushing 103 is journaled a stem 105 of the knot-tier and yarn cutter. A longitudinal slot is rovided in the operative end of said stem 1n which is arranged a yarn-cutting and ripping blade 107. The blade 107 is pivote( at 108 in the fork of the stem 105and is made with a tail-piece 106 which works in an eccentric or cam-like recess 107a in the end of bushing 103, so that as the stem 105 is rotated the said eccentric recess acts to swing the blade on its pivot 108 to open and close the blade with relation to the fingers at the end of stem 105. At the opposite end of stem 105 is Ifixed a pinion 109 which is driven through an intermediate gear 110 by the gear 57 on shaft 53. The operative end of stem 105 is made with two obliquely disposed tapering fingers 111 and 112, one at each side of the blade 107. Finger 112 coperates with the sharp or cutting edge4 113 of blade 107 to cut the yarn when the blade is closed with relation to the fingers, and the other finger 111 coperates with the rounded edge 114 of the blade to clamp the yarn between the blade and finger 111 when the blade is closed. Normally the oblique fingers and blade occupy the position best shown in Fig. 5 which is diametrically opposite to the position which they will occupy when the arms 86, 98 and 99 swing the yarn into coperative relation with said tying and cutting mechanism. The order in which the parts move is determined by the position of the cams on shaft 53, motion of the arms 86, 98 and 99 to Swing the loop or bight toward the rotating stem 105 occurring in time to lay the loop against said stem within the angle formed with it by jaws 111, 112. At the end of the next quarter revolution of the stem 105 and While 'the fingers 111 and 112 are passing 'the stretch of yarns extending from the stem 105 to the arm 98, the blade 107 is held closed by the cam recess 107, so that as the fingers 111 and 112 pass that stretch of the yarn, the yarn is engaged by the outer sides of the fingers and defiected'around the end of stem 105. At the end of one complete revolution of the stem 105 the yarn has been wound one turn around the steml close to the bases of the fingers 111 and 112.

During the next or fifth quarter of the revolution of stem 105 the fingers and blade 107 reach that stretch of the yarns extending from stem 105 to the arm 99 and the blade 107 occupies its most open position so that continued movement of the stem lays the yarns int/.0 the V-shaped opening between the blade and the fingers and thereafter closes the blade upon' the yarns, the sharp edge of the blade severing the yarns between the blade and arm 99 and the other edge of the blade clamping the ends of the yarns coming from the knot which is being formed. As the stem starts the last half of its second revolution and while the blade is still closed,

. After picking up all of the yarn except a very the arms 86 and 98 stop and start to move back toward their normal positions, and in so doing pull upon the yarns extending from said arms to the.knot yand act to pull the knot off from the stem and fingers and to draw it tight. As the stem approaches the latter part of its second revolution the blade 107 is fully open and the tied ends of the yarn are left in the grip of the arms 86 and 918 which are moving backward toward their normal position.

During these operations the sprocket chain will have been actuated by gear 57, intermediate gear 110 and gear 109 on the sprocket shaft 9-1, tomake one complete revolution. The parts lare so timed that as arm 86 strikes stop pin 102 and arm 98 moves away from arm 86, the loop-forming guide roller 84 on the sprocket chain will pass upward between said two arms (see Fig. 5) and pick up( the rejoined yarn.

the yarn the guide roller 81 is carried to its normal position by the sprocket chain, forming a new loop which extends upward'into the tubular casing 88 as above described. In the instance of the invention shown, the loop or bight around the guide 84 is also useful when replen-ishing a broken or exhausted yarn to provide enough yarn between detector 31 and the knotter to insure tying holding the exhausted end within the airblast 88. It will be noticed that for tying out and severing a loop bearing a slub the same means lare employed without change to form the bighlt or loop to be so removed, and dispose of it after the device has functioned to tie and sever.

The operation of the mechanism has been sufficiently indicated albove, but attention is called to Ithe sequence of operations by which the slub-detector is reset during recession of the loop-forming guide 84, by which means short length between the knot tied in it and the guide 8f3, see Fig. 10, is passed through the machine in position to cause a slub to work the detector. It will be obvious to those skilled in the art that the slub-removing mechanism, here combined with and utilizing pants of a replenishing mechanism and a winding mechanism, is susceptible of being used with vand of employing in common similar parts of other textile machines not necessarily either for winding or packaging yarns or having automatic replenlshing Vde-l vlces.

While I have shown and described .an old form of knotter for uniting the yarns in a hard, smooth knot adapted to pass readily through the guides of textile machines, it will be understood that other uniting means or other forms of knotters mayibe substituted without change of the broad features of the invention.

the new -end and` What I claim is:

1. A textile machine having therein means for moving a yarn from one package to another. package, a slub detector between the packages, and mechanism controlled by said slub detector adapted automatically to sever the section containing the slub from the yarn and to attach together the severed ends.

2. In combination, winding mechanism, a supply of material to be wound, a slub detector between the winding mechanism and supply, and mechanism operated by the slub detector adapted automatically to sever the slub from the material and to attach together again the severed ends.

3. In combination, winding mechanism, a supply of material to be wound, a slub detector between the winding mechanism and supply, and mechanism o-perated by the slub detector adapted automatically to stop the winding mechanism, remove ythe slub from the material and attach :together again the severed ends, and restart the winding mechanism. y

4. In combination, winding mechanism, a supply `package carrier holding a plurality of packages of material to be wound, a slub detector, means controlled by theslub detector to remove a slub, a yarn detector, and an automatic tying mechanism common to both the slub and the yarn detectors and adapted to be controlled by either.

5. In combination, windingiv mechanism, a. supply package carrier holding a plurality of packages of materia-l to be wound, a slub detector, means controlled by the slub detector to remove a slub, a yarn detector, tying mechanism controlled by both the slub detector and the yarn detector, the operation of said slub detectorbeing adapted to control the slub removing means and said tying mechanism to tie together the severed ends, and the operation of the yarn detector being adapted, when the material from a supply package ceases, to control said tying mechanism to unite the leading end of the material from another package and the following end of the material passing to the winding mechanism.

6. In combination, winding mechanism, a supply package Ycarrier holding a plurality' of packages of material to be wound, a slub detector, means controlled by the slub detector to remove a slub, a arn detector, tyingy mechanism controlled by both the slub detector and the yarn detector, the operation of the yarn detector being adapted to cause the package carrier to advance so as to Vpresent a fresh supply package to operative position and to cause the tying mechanism to tie the leading end of the material from the fresh supply package to the following end of the material passing to the winding mechanism, and the operation of the slub detector being adapted to set in operation tijomagnets to cause the package carrier to advance and the tying mechanism to operate, and the operation of the slub detector being adapted to energize only the electromagnet controlling the tying mechanism and slub-removing means, Without affecting the package carrier.

8. In combination, winding mechanism, a

carrier for material to be wound, a slub detector, means to form a loop in the material between theslub detector and the winding mechanism, and tying mechanism opposite said loop automatically operated by the slub detector to tie together the legs of the loop while the slub is in the bight of the loop.

9. In combination, winding mechanism, a supply of material to be wound, a slub detector, means to form a loop in the material between the slub detector and the winding mechanism, tying mechanism opposite said loop automaticallyoperated by the slub detector to tie together the legs of the loop while the slub is in the bight of the loop, and means to cut off the bight of the loop beyond the knot.

10. In combination, winding mechanism, a supply of material to be wound, a slub detector, means to form a loop in the material between the slub detector and the winding mechanism, tying mechanism opposite said loop automatically operated by the slub detector to tie together the legs of the loop while the slub is in the bight of the loop, means to cut off the bight of the loop beyond the knot, and means automatically to form a new loop.

11. In combination, winding mechanism, a supply of material to be wound, a slub detector, means to form a loop in the 'material between the slub detector and the winding mechanism, tying mechanism opposite said loop automatically operated by the slub detector to tie togethei` the legs of the loop while the slub is in the bight of the loop, means to cut oii the bight of the loop beyond the knot, means automatically to form a' new loop, and a vacuum pipe associated with the loop-forming means to carry ofi' the severed bight of the loop.

12. In combination, winding mechanism, a supply of material to be wound, a slub detector, mechanism to stop and start the winding mechanism, loop-forming mechanism to form a loop in the material between the slub detectolI and the winding mechanism, and tying and severing mechanism opposite the neck of said loop, said mechanism being operated automatically by said slub detector to stop the winding mechanism while the slub is in the bight of said loop, to tie together the legs ofthe loop and cut off the bight of the loop containing the slub, to form a new loop in the material, and to restart the winding mechanism.

13. In combination, winding mechanism, a supply of material to be wound, a slub detector, mechanism to stop and start the winding mechanism, loop-forming mechanism to form a loop in the material between the slub detector and the winding mechanism, a tying and severing mechanism opposite the neck of said loop, said mechanism being operated automatically by said slub detector to stop the winding mechanism while the slub is in the bight of said loop, to tie together the legs of the loop and cut oil' the bight of the loop containing the slub, to form a new loop in the material and to restart the winding mechanism, and a vacuum pipe associated with the loop-forming mechanism to carry off the severed bight of the loop.

Signed by me at Boston, Massachusetts, this sixth day of September, 1918.

EDW'ARD JAMES ABBOTT.

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