US1980078A - Winding machine - Google Patents

Description

J. NELSON WINDING vMACHINE Nov. 6,1934.v

Filed dan. 3o j 1935 4 Sheets-Sheet l jozzz Nm, 6, 19224. J NELSON 1,980,078

WINDING MACHINE Filed Jan. so. 1,933 4 sheets-sheet 2 NOV. 6, 1934, J, NELSON 1,980,078

WINDING MACHINE Filed Jan. 3o, 193s 4 sheets-sheet 3 V Lavazzf, Mv,

5.7 I VKMM.;

Nov. 6, 1934e J. NELSON WINDING MACHINE Filed Jan. 30. 1933` 4 Sheets-Sheet 4 /ZiyazJze J.

Patented Nov. 6, 1934 wnmlNG MACHINE l John Nelson, Cranston, R. l., assigner to Universal.

Winding Company, Boston, Mass., a corporation of Massachusetts 1 Application January 30, 1933, Serial No. 654,323

15 Claims. (Cl. 242-36) Ihis invention relates to improvements' in winding machines for winding cops, cones and other packages of thread, yarn, cord and simid lar strand material and particularly to winding 5 machines wherein the strand or strands being wound are acted uponby a yarn-cleaner and slub-detector of a type such as shown'and described in United States Letters Patent No.

1,785,817, dated'December 23, 1930. Slub-detectors of this type comprise a yieldable element which is moved to actuate the stopping mechanism of the machine when a slub or other enlargement is detectedwhereby to A'arrest the winding operation before the enlargement reaches the package.

Manually-operable means are usually provided in the machine for starting the winding operation and duringI the manipulation of the starting means the stopping 4mechanism is rendered inactive. As the machine is started the movable detector-element is automatically positioned to act on the strand feeding to the package. According to the usual practice the operator starts the winding operationby depressing a lever or handle which is held until the slackness in the strand is taken. up by the winding. It frequently happens that during the starting operation a bunch or other enlargement appears on the strand and passes through the device.' The passage of the enlargement'through the device actuates the movable detector-element, but due to the fact that the stopping mechanism is held inactive by the operato;` the machine cannot be stopped until vthe handle is released and, consequently, the slub or enlargement is drawn into the package.r If the imperfection is not observed by the operator it will be incorporated in the package; or, if discovered, a length of yarn' must be unwound from the package to recover the slub or bunch, thus entaling a delay resulting in loss of production.

It is an object of the present invention to improve the eiciency of the Winder by providing means for 4maintaining the detector-element stationary during the starting -of the machine whereby the strand will be broken` should a slub,

bunch or other enlargement appear thereon..

- panying drawings.

prior to the actual start of the windingoperation whereby to prevent uninspected lengths of the strand from passing into the package being wound.

Another object of the invention is to provide a device of the type specied which is simple in construction, proof against derangement or becoming out of order, and adapted for application to detector-devices,incorporated in standard types of machines. l

Further objects of the improvement are set forth in the following specification which described a preferred embodiment of the invention, by way of example, as illustrated by the accom- In the drawings:

Fig. 1 is a side View oa conventional type of winding machine embodying a yarn-cleaner and slub-detector of the type indicated and showing the present invention as Aapplied to use therewith, the winding elements being shown in operative relationship with the strand feeding to the package being wound;

Fig. 2 is a similar view illustrating the manner in which the operation of the machine is arrested when a slub or other enlargement passes through 'the detector-device;

Fig. 3 is a similar View showing the relationship of the parts of the machine during the starting of thel winding operation and illustrating the manner in which the'detector-element is held stationary by the depression of the starting y handle;

Fig. 4 is an enlarged plan view of a portion of thewinding machine showing the detectordevice and its controlling means; A

Fig. 5 is an enlarged front view of the yarncleaner and slub-detector; and

Fig. 6 is an enlarged perspective view of the yarn-cleaner and slub-detector showing the relationship of the controlling means thereto.

Figs. 1 and 2 of the present drawings illustrate a well-known type of winding machine for winding yarn, thread and other laments or bers into cops or packages. The machine as herein shown is of the drum-driven type wherein the cop, cone or package is rotated by surface contact with a continuously driven drive-roll or drum and the yarn traversed longitudinally of the package by means of a reciprocating threadguide. While it has been preferred to herein illustrate the yarn-cleaner and slub-detector and the controlling means therefor as applied to a winding machine of this type, it is to be understood that the present invention may be used With other apparatus such as employed in the various processes of converting, treating and transferring textile materials.

The construction of the winding machine herein illustrated is substantially the same as that shown and described in United States Letters Patent No. 1,656,088, dated January 10, 1928, and therefore will be described only briey in connection with the present invention. Re-

ferring to Figs. 1 and 2, the reference character 2 designates a lhorizontal bed or table f'or supporting av plurality of winding units spaced therealong. Bolted to the bed 2 are a series of laterally extending brackets or frame-members 3 carrying bearings for the horizontal driveshafts of the machine. J ournaled in lower bearings on the frame-members B is a horizontal cam-shaft 4 carrying a cylindrical cam 5. The periphery of the cam 5 is scored with a helical groove 6 for engagement with a roller 7 connected to a thread-guide 8 which slides on a horizontal track 11. As the cam 5 is rotated with the shaft 4 the thread-guide 8 is reciprocated therefrom to traverse the yarn longitudinally of the axis of the cop or package being wound.

Journaled in the frame-members 3 above the cam-shaftr4 is a second shaft 12 which carries a drive-roll 13 for each winding unit arranged in series therealong. The thread-guide 8 reaches above the drive-roll 13 and is provided ,with a slot or groove through which the yarn y feeds to direct it onto the cop or package wound on a holder 14. The holder 14 may be of any suitable shape to constitutea mandrel for the cop-tube or yarn-receiver C, being journaled on a dead spindle 15. The spindle 1-5 is .carried at the forward end of an arm 16 which is pivoted on a stud 17 held-in an-upper bearing on the frame-member 3. As the package is wound on the yarn-receiver C the arm 16 sm'ngs upwardly about the pivot-stud 17.

Suitable means are provided in the machine for arresting the winding operation when the strand breaks or its supply is exhausted. Such 'a form of stopping mechanism is fully set forth in the patent last referred to and therefore will not be herein described in detail. To arrest the winding operation the spindle-arm 16 is swung upwardly on its pivot under the action of a pawl 20, whereby to lift the package away from the drive-roll 13. The pawl 20 engages with teeth cut in the side of an arcuate arm or quadrant 18 forming part of a lever 19 pivotally `mounted on the spindle-carrying arm 16.

' The lever 19 is 'connected to operate a brake which is applied to the holder 14, or a part thereof, to promptly 'arrest the rotation of the package when the latter has been freed from contactwith the drive-roll 13. 'I'he braking mechanism consists of an expansible brakeshoe 21 adapted to be expanded under the pivotal action of a brake-lever 22 which is moved through its connection With the lever 19, before referred to, as the arm 16 is swung upwardly.

' The braking mechanism as herein shown is identical with that illustrated and described in United States Letters Patent No. 1,801,378, dated April 21, 1931.-

The pawl 20 is carried at the end of a rod 23 pivoted in bearings on the frame-member 3. A helicall spring 24 attached at one end to the pawl 20 andanchored at its opposite end to the frame-member 3 tends to turn the rod 23 in its bearings to cause" the pawl 20 to. act on the quadrant 18 to raise the arm 16 to lift the package away from the drive-roll 13 while simultaneously applying the brake. The rod y23 is normally locked in fixed position to adapt the toothed side of the quadrant 18 to ride over its end as the arm 16 rises with the growth of the package being wound. The forward 'end of the rod 23 has a crooked portion terminating in a detent-blade 25 which is normally engaged with a latch-plate 26 carried by a post rising from the top of a rockable thread-lifter 30. As described in Patent No. 1,656,088, before referred to, the latch-plate 26 has a detent-shoulder 27 which engages the edge of the blade 25 to hold the rod 23 from turning under the force of the spring 24.

The thread-lifter 30 which acts to disengage the yarn from the thread-guide 8 as the winding is arrested is provided with hubs 31 pivoted on studs 32 fast in the sides of opposite framemembers 3. The thread-lifter 30 is rocked on its pivots by the operation of means as next described. Pivoted on a stud 33 projecting from the side of the frame-member 3 is -a lever 34, the upper end of which engages against a tailpiece 35 extending downwardly from the threadlifter 30. The lower end of the lever 34 carries a pin 36 upon which is pivotally mounted a knock-off lever 37. The outer free end of the lever 37 lis adapted to be raised against a stoppin 38 to bring it into position to be engaged with a continuously rotating toothed wheel 40, this action taking place when the yarn breaks or its supply is exhausted. 'Ihe wheel 40 is fast on the cam-shaft 4, being rotatedv therewith in the direction indicated by the arrow in Fig. 1. As the A.end of the lever 37 is engaged by one of the teeth on the wheel 40 the lever will be moved bodily y'toward the left as viewed in Figs. l and 2. Under this action the upper arm of the lever 34 is swung in a clockwise'direction to act on the taiipice 35 of the lifter 3o to rock the latter whereby to cause its upper plate-'like portion to lift the strand out of the vgroove in the threadguide 8 in the manner as indicated in Fig. 2 of the drawings. i

'I'he engagement of the knock-off lever'37 with the wheel 40 is elfected through its connection with a link 41 which has its lower end hooked `therearound. The. upper end of the link 41 is hooked through a. hole in a horizontally-extending crank-arm 42 which, as shown in Fig. 4, is pivoted on a rod 44 held in the ends of the pivot-studs 32 for the thread-lifter 30. Pivotally mounted on the rod 44 substantially midway of its ends are two wire levers 45 and 46 which extend forwardly through slits 47 in the front of the thread-lifter 30, see Fig. 4. The pivotal ends of the levers 45 and 46 are coiled about bushings 48 which surround the pivot-rod 44. The lever 45 is connected to be operated from the movable element of the slub-detector, to be later described, while the lever 46 is actuated from a breakage-lever controlled by the running yarn in the manner as. later explained. During normal operation of the machine the crank-arm 42 is maintained in the position shown in Fig. 1 with the levers 45 and 46 resting on its forward upper edge 49, being counterbalanced by its own weight and the weight of the knock-off lever 37. When the yarn breaks or its supply is exhausted, or when an enlargement appears on the strand, one of the levers arm 42 thereby causing the latter to act through the link 41 to raise the knock-oil lever 37 into position to be' struck bythe wheel 40. The knock-off lever 37, is thus caused to be moved bodily by the impact of the wheel 40 to rock the thread-lifter 30 in the manner as previously 'explained. The pivotal movement of thethreadlifter 30 disengages the latch-plate 26 carried thereby from the detent-blade 25, thus releasing the rod 23 to cause it to rock to act through the pawl 20 to raise the arm 16 and lift the package away from the drive-roll` 13.

' Manually-operable means are yprovided for releasing the arm 16 to return the package into driving connection with the drive-roll 13 to start the winding operation and concurrently reset the stopping mechanism. Pivoted on the studs 32 which support the thread-lifter 30 is a bifurcated frame v50 having opposite legs 5l connected by a cross-strip 52, see Figsf'l and 4. A starting lever or handle 55, bolted to the frame 50, reaches outwardly at the front of the machine in convenient position to be grasped by Vthe operator, see Figs. 3 and 4. The frame 50 is provided at one end with an inclined arm 56 which extends upwardly and rearwardly, terminating in a bent finger 57 adapted to engage beneath Ithe crooked portion of the rod 23 to rock the latter and engage its detent-blade 25 with the latch-plate 26. During the winding operation the arm 56 is normally held with its nger 57 resting against a projection 5'8n'pn the frame 3 by means of a spring 59. see Fir l.

A bell-crank lever 60 is pivoted on tie pin' 33 which forms the pivotal support for the leven 34 with its arm 61 reaching upwardly and bent at right-angles in a nger 62 engaging a hole 63 in the leg 51 at one endlof the frame 5o, see Fig. 3. The lower arm 64 of the lever 60 is adapted to enga'gethe tail-piece of the knock-o' lever 37 to depress the latter to hold its outer end away from the teeth of the wheelV lu, the lever`60 being rocked to eiect this action when the frame 50 is rocked to start the winding operation.

Secured to the front of one of the framemembers 3 by means of bolts 67 is a bracket or arm 68 reaching outwardly to' support a tension-device which may be of any usual construction. Secured to the outer end Aof the arm 68 by means of screws 69 is a tension-bracket 70 provided at its forward end with a hub or bearing 71 supporting a pin 72 upon 'which are mounted a pair of tension-disks 761 and 75, see Fig. 5.y The disks 74 and 75are formed with enlarged axial bores for receiving a porcelain bushing 73 which is loosely mounted on the pin 72. One disk 74 is heldaxlally against the side of the bracket while the other disk 75 is yieldingly pressed toward the disk 711'.- by means to be later described. Secured to the-side oi the bracket 70 is a complementary bracket 76 having a central opening surrounding the rim of the tension-disk 75. A weighted lever 77 Ipivoted on a pin 78 held in bearings 79 on the side of the bracket 76 carries a spring-nnger 80 adapted to bear against the pointed end of a conical enlargement onhead 8l on the pin 78. nst a cupped washer 32 of which abuts the side of the disk 75 to pre the latter toward the ends of the brackets 7G and 76 are flare.. to provide a reentrant mouth for facilitating the threading of the yarn y into positionbetween the disks 74 and 75. Depending from' the bracket celain or other vitreous material.

70 is a wire pigtail-guide 83 through the eye of which the strand y leads from the supply bobbin, not herein illustrated but usually arranged below the unit.

The means for initiating the operation of the stopping mechanism of the machine when the yarn breaks or its supply is exhausted consists essentially in a breakage-lever pivotally mounted on the tension-bracket 70. As shown most clearly in Figs. 1, 2 and 5, the breakage-V lever 85 comprises abent wire arm mounted a bfmcated bearing member 86. The bear-v ing member`86 has opposite legs pivoted on a wire pin 37 which projects through a lug 88 on the top of the tension-bracket 70. The pin 87 is formed with a crook 89 having a portion extending parallel with its main length and sprung intofplace against a shoulder. 90 formed in a lug 91 on the bracket 70. The bearing member 86 hasa depending lug92 which straddles the lug 88 on the side opposite from one of its legs to retain the member laterally on its pivot-pin 37. The lower end oi the breakagelever 85 is secured inan opening in the bearing member 86 by means of a screw 93. Secured to the upper end of the breakage-lever 85 is a thread-guide 94, preferably constructed of por- The'threadguide 94 has an oset arm or finger 95 forming a crotch through which the strand g1 draws as it feeds up from the tension-device.

The breakage-lever 85 is connected to actuate the wire lever 46, previously reiererd to, by means of a wire arm 96, see Figs. l and 4. The arm 96 extends through a hole at one end 110 of the bfurcated hearing member 86 and is secured in place by means of aiscrew 97. The opposite end of the arm 96 is bient into a loop 93 adapted to engage around the right-angled end-portion of the wire lever 46. Normally, the breakage-lever 35 is held in forward position as shown in Fig. l under the tension of the strand y drawing upwardly from the tension-device with its wire arm 96 raised at its rearward end. `lVnen the yarn breaks or its supply is exhausted the lever 35 is released and the weight of the arm 96 will cause the latter to rock downwardly to depress the lever 46 whereby to tilt the crankarm a2 to lift the knock-o lever 37 into position to be engaged by the toothed wheel 40.

As the strand y leads up from the tensiondevice it draws across a x'ed thread-guide consisting in a pin or rod 160 having a circumferentialgrcove 101 through which the strand feeds; The thread-guide 10D is held in a lug 130 102 formed as a part of a bracket 103 mounted on the Vtension-drame 76 and secured in place by a screw 99. Referring particularly to Figs. 4 and 5 o the drawings the bracket 163 has a curved outer rim 101i which serves as a guide 135 for. directing the yarn into the openings of the yarn-cleaner to be later described. The upper shelf-like portion of the bracket 103 is formed with an elongated opening 105 through which the breakage-lever 35 projects `above the top 140' to act on the yarn or thread after the latter has drawn through the tension-device. For mounting the yarn-cleaner on the bracket a standard 106 of sheet-metal is provided havingl a vertical foot 107 formed with a slot 108, see Fig. 6. The foot 10'? is fastened to the side of a lug or post 109 rising from the top of the bracket '70. by means of the screw 99 which secures the bracket 103 to the tension-bracket. Extending laterally of the foot 107 at the top thereof is a, horizontal shelf 111, on the sides of which are vertical ears 112 for the pivotal support of the movable detector-element of the yarn-cleaner.

One ear 112 is extended forwardly in a horizontal arm 113 which is provided with lugs 114 bent inwardly from its top and bottom edges, see Figs. 3 and 6. The arm 113 forms the support for an adjustable cleaning member 115 which cooperates with the movable detector-element 120 to scrape the yarn and to detect the presence of 4slubs and enlargements thereon. The forward end of the member 115 is bent or folded back at an angle of substantially fortyve degrees to its side to form a yarn-rest 116 across the face of which the strand y draws during its upward passage through the device. The member 115 is slidable on the arm 113 between the bent lugs 114 and an eccentric adjusting screw 117 is provided for setting the device with the yarn-rest 116 in proper spaced relation to the forward yarn-engaging edge of the movable detector-element .120. Rising from the rearward side of the member 115l is an elbow-shaped arm 118 which is bent or twisted to provide a yarn-rest 119 which overles the rest 116 with its face in a vertical plane at rightangles thereto.

Referring to Fig. 6, the movable detectorelement 120 which cooperates with the faces of the yarn-rests 116 and 119 to scrape lint and other accumulations from the strand, and also to detect the presence of slubs or enlargements thereon, consists V,in a substantially at plate or blade having hinge-ears 121 bent upwardly from its sides at one end thereof. 'Ihe element 120 is pivoted on the mounting 106 by means of a cross-pin 122 extending through holes in the ears 121 and held in the upstanding ears 112 on the standard 106. The forward edge 125 of the element 120-is inclined to the pivotal axis atan angle of forty-live degrees to adapt it to extend in spaced parallel relationship withv the yarn-rest 116, thereby providing a narrow slit or opening through which the strand y draws. At the outer end of the plate 120 an integral strip 126 is bent upwardly from its side and then folded over to form a relatively narrow at plate 127 overlying the main plate 120 in parallel spaced relation thereto.

The upper supplemental plate 127 has its lateral edge 128 extending parallel with and spaced away from the side ofthe yarn-rest 119 a distance equal to the space lbetween the .angular edge 125 of the main blade 120 and the rest 116. It will thus be seen that the strand y drawing up between the edge 1 25Y of the blade 120 and the face of the rest 116 will follow a course between the lateral edge 128 of the plate 12'7 and the face of the rest 119. The purpose of this yarrangement is to provide that the yarn will be acted upon on four sides as it draws between the detector-element 120 and the fixed rests 116 and 119, whereby to completely scrape and clean the yarn to remove all foreign matter adhering'thereto. To regulate the width of the llneeosove slits or openings through which the strand draws for yarns of diferent thicknesses the eccentric adjusting screw 117 is turned to slide the member 115 longitudinally of the fixed arm 113 to adjust the rests 116 and 119 toward or away from the edges 125 and 128 of the element 120. The element 120 is provided with a laterally projecting stop-lug 129 which rests upon one of the ears 114 on the member 115 to locate the detector-element with its yarn-engaging edges 125 and 128 in proper relation to the rests 116 and 119. 1

At 'the pivoted end of the element 120 is a trigger-arm 131 bent downwardly at substantially right-angles `to its main plane. The lower edge of the arm 131 is adapted to engage to a slight extent across the upper edge of, a pivoted trip-lever 132 which is counterbalanced at its opposite end by means of a cylindrical weight 133 riveted thereto. The trip-lever 132 is provided with opposite ears 134 by means of which it is pivoted on a cross-pin 135 extending between the ears 112 on the standard 106. The rearward end of the trip-lever 132 is provided with an upstanding slotted ear 136 for receiving the hooked end of the wire lever 45, previously described as pivoted on the rod 44 and providing;` the connecting means between the yarn-cleaner and stopping mechanism of the machinal 'I'he means for resetting the movable detectorelement f the yarn-cleaner and for restraining its move ent at the start of the winding operation, to prevent imperfections in the yarn from passing to the winding when the stopping mechanism is held inoperative, is constructed and arranged `fas next described. Briefly, the control means ,i'for the detector-element consists in a yieldable member 140 carried by the rockable frame /50 which is operated from the starting handle 55 and adapted to impinge against the top of the detector-plate to hold the latter in its lowermost position. As herein illustrated, a sheet-metal arm 141 is formed with a foot 142 fastened to the front of the frame 50 by means of a screw 143, see Figs. 3 and 4. The arm 141 is of .sickle-fshape extending upwardly and curving forwardly to terminate at a point above and at the rear of the detector-element 120. A nger 144 projects at right-angles from the upper end of the arm 141 to serve as a bearing for a helical coil of wire 145 whichdorms the support for the yieldable member'140. As herein shown the yieldable element. 140 ris constituted by a nger formedby a continuation of the coil 145 and terminating in a curved end which normally spaced at a distance thereabove as shown in Fig. 1. The opposite end of the coil 145 is extended along the side of the arm 1'41 and looped around the edge thereof at 147 to secure the member 140 in place on the arm.4 When the starting handle 55 is depressed in starting the operation of the machine the arm 141 will be carried downwardly therewith until the end of the springarm or control-member impinges against the top of the detector-element 120. Through this action the detector-element will be returned to operative position at the start o the winding and held in this relationship until the handle 55 is released, the purpose of the controlling means and its method of operation being more fully explained hereinafter.

The method of operation of the complete machine is next/explained. Assuming that the machine s in operation with the parts positioned as shown in Fig. 1, the strand of yarn y feeds upwardly from its source of supply through the guide 83 and thence between the tension-disks 74 and 75 as it draws across the porcelain bushing 73. From the tension-device the strand y passes up through the yarn-cleaner and slubdetector, drawing through the slits between the yarn-rests 116 'and'. 119 and the angularly disposed edges 125 and 128 of the movable detector-elementu 120. From the slub-detector the strand feeds through the groove 101 in. the thread-guide 100 and thence through the crotch of the thread-guide 94 on the breakage-lever 85. To provide a relatively extended length o f yarn between the slub-detector and the package the strand is led up over a guide-sheave or roller, not herein shown, and thence it draws downwardly around the guide-rod 15D' on the threadlifter 36 to Ydirect it through the slot in the thread-guide 8, whence it feeds on to the package being Wound. I When the yarn breaks or its supply is exhausted the breakage-lever is released, allowing the wire arm 96 to drop to thereby initiate the action o f the stopping mechanism oi' .the machine in the manner as previously explained.

`Stated briey, the dropping of the arm 96 moves.

the wire lever 46 downwardly to' rock the crankfr. arm 42, this action raising the link 41 to lift th knock-on lever 37 into position for its end td be engaged by one 4of vthe teeth on the continurl ously rotating wheel 40. When a slub or enlargement b appears on the running strand it encounters the edge of the detector-element 120.

thereby lifting the latter as .shown in Fig. 2 to releaseits trigger-arm 131from the end of the trip-lever 132. Upon its release the trip-lever 132 drops, thus carrying the wire lever 45 downwardly to rock the crank-arm d2 to raise the knock-off lever 37 into position to engage the wheel 40 in the same manner as above described.

The engagement of the toothed Wheel d() with the knock-off lever 37 causes the latter to move bodily to rock its upper arm 3e Iwherehvto tilt the thread-lifter 30 upwardly to the position shown in Fig. 2 of the drawings. As-the thread-lifter 30 is actuated in this manner it disengages the shoulder 27 on the latch-plate 26 from the detent-blade 25 on the rod 23,

thereby releasing the rod to permit it to be` tion of the pawl 26 with the ann .i9 also servingto apply the brake to promptly arrest the rotation of the package as its contact with the drlvevroll ceases.

Concurrently with the arrestinent of the rotation of the package, the'rocking of the thread-lifter 30 lifts the strand y out of the groove in the thread-guide, 3 so that the continued reciprocation of the guide will have no further eiect on the yarn. During the functioning of the stopping mechanism in the man- 4 ner as above explained the frame 50 and its member 3, the spring 59, acting to retain the partsin this relationship.

After the operation of the machine has been arrested by the failure of the supply of yarn feeding thereto or by detection of a slub or bunch thereon the operator splices the broken ends, replenishing thesupply or removing the imperfection, as may be necessary, and threads the strand through the tension-device and yarncleaner in the manner as before explained. In threading up the machine the curved ends of the brackets 70 and 76 facilitate the placing of the strand in position between the tension-disks 74 and 75. It will also be noted by reference to Fig. 4 of the drawings that the innerA end of the curved edge 'of the bracket 103 is shaped to guide the yarn into place between the yarn-rest 116 and the edge.125 of the detector-element 120, whereafter the strand will also iind its proper position between the face of the yarnv rest 119 and the edge 128 of the upper plate 127 on the detector-element 120. From the yarn-cleaner the strand is led upwardly to the overhead sheave or roller and then downwardly Varound the thread-guide 150 with its end attached to the end on the package being wound.

To start the winding operation the operator grasps the lever or handle 55 and presses it downwardly to' the position shown in Fig. 3 of the drawings. y Under this action the arm 56 of the frame 50 is rocked upwardly against the tension of its spring 59 to carry its curved finger 57 against the crooked or oiset portion of the rod 23. Continued movement of the frame-50 from the handle 55 causes the rod 23 to be rocked to carry its knife edge 25 along the edge of the latch-plate 26 to engage it with the detent-shoulder 27; it being understood that the thread-lifter 30 is ahowed to drop back into original position as shown in Fig. l of the drawings under the action of gravity as the edge of the blade 25 slides along the edge of the plate 26. The release of the thread-lifter 30 lowers the strand y into position to be picked up by the thread-guide 8 as the package is returned into driving contact with the drive-roll 13. The turning of the rod 23 in themanner as last explained returns the pawl 20 to first position and thereby lowers the arm 16 suiciently to engage the surface of the package with the periphery of the drive-roll. At this juncture the brake is released from the cop-holder 14 and the contact of the drive-roll with the surface of the winding causes the package to be rotated to wind on the yarn as the strand is picked up by the guide 8 and traversed lengthwise of the package.

The operator maintains the starting handle 55 depressed in the position `as shown in Fig.l 3 until the slack in the strand is taken up by the winding, that is, until the breakage-lever 35 has been tilted into forward position as shown in Fig. 1 to lift its connected arm 96. With the arm 96 raised the lever 46 is held lifted to release the crank-arm 42 whereby to allow the knock-oli lever 37 to swing downwardly to carry its end bey'ehd the range of the wheel 40. The knocko lever 37 is rocked downwardly by the engagement of the lever 60 therewith, see Fig. 3, the lever 60 being rocked through its connection 63 with the frame 50.

It will be evident that while the starting handle.55 is held depressed at the' start of the winding operation the knock-oit lever 37 cannot be raised into engagement with the wheel d0 and therefore the stopping mechanism of the machine will remain inoperative. During this interval, therefore, any slub, bunch or enlargement that may appear on the yarn will pass through the slub-detector without effecting the stopping of the machine. Normally, when a slub or enlargement encounters .the edges of the pivoted plate or element 120 it lifts` the latter into the position shown in Fig. 2 of the drawings, thereby rocking its trigger-arm 131 forwardly to free it from the end of the trip-lever 132. This action causes the longer armv of the trip-lever 132 to drop to depress the lever 45 to actuate the stopping mechanism in the same manner Vas before explained. When this latter action is prevented, however, by the retention of the starting handle- 55 in depressed position at the start of the winding it is important that some means be provided to detect the presence of a slub or enlargement and thereby effect the stopping of the machine. For this purpose the present invention provides the resilient arm or yieldable member- 140 mounted on the arm 141 carried by the frame 50. The method of opera- 'tion of this part of the machine is as next explained.

As the handle 55 is depressed and the frame 50 rocked to start the operation of the machine the arm 141 is rocked forwardly and downwardly, thereby engaging the end of the wire arm or finger 140 against the top of the blade 120. The pressure of the finger 14() forces the blade 120 downwardly into operative position and retains it in this positionas long as the handle 55 is held down whereby to prevent slubs, bunches or enlargements from passing through the slits or openings between the operating edges of said member and the yarn-rests 116 and 119. Consequently, when the slub or other enlargement meets the edge of the member 120 while the lat-,1 ter is restrained from yielding or being raised, the yarn will be held and broken at this point indicated in Fig. 3 of the drawings. Usually, a suiicient length of the strand intervenes between the yarn-cleaner and the winding so that after the strand is broken the end of the yarn will not reach the winding before the handle 55 has been released by the operator. That is to say, the

'handle 55 will be released and the breakagelever^ allowed to function to trip the stopping `mechanism before the 'broken end can run into the package so that this end may be conveniently retrieved and spliced to the end caught at the slub-detector after the slub or other enlargement has been removed.

In this manner the machine as provided with the present invention operates more eiciently and positively to detect all slubs, bunches or otherenlargements on the yarn and to cause the winding to be arrested before such imperfections reach the package. Even though the operator may hold the starting handle for an unnecessarily extended period, the slub or other imperfection will be detected and prevented from feeding into the package so that no uninspected portion of the yarn or other strand material is allowed to be incorporated in 4the winding.v

In addition to the means for detecting imperfections in the yarn under the conditions mentioned, the use ofthe yieldable finger or element 140 also insures that the detector-element 120 will be invariably returned to operative position after having once been raised by the passing of an enlargement through the device. That is to say, it is impossible for the detector-plate to remain in inoperative position if caught or held by an impediment since the nger 140 will positively return it to operative position when the starting handle 55 is depressed -to start the operationof the machine.

The present invention is extremely simple in construction and arrangement yet nevertheless provides a most important adjunct to` the winding or like machine to insure against undetected imperfections in the yarn from passing into the product.

While the device is herein shown and described as embodied in a preferred form of construction and applied to a winding machine and slub-detector of certain type, various modifications may be made in the form and arrangement of the 'parts of the apparatus and in its method of application to use with other types of yarn-cleaners and winding machines without departing from the spirit or scope of the invention. Therefore, without limitation in this respect, i claim:

1. In a winding machine, the combination of stopping mechanism therefor, means operative by an enlargement on the yarn feeding to the Winding to' actuate the stopping mechanism without breaking the yarn, means for starting the operation of the machine, and means actulated thereby to cause the yarn to be seized and broken when an enlargement appears thereon while the stopping mechanism is inoperative.

i 2. In a winding machine, the combination of Astopping mechanism therefor, a slub-detector roperative by the passage therethrough of an enlargement on vvthe yarn to actuate the stopping mechanism, means for starting the operation of j the machine, and means operated therefrom to prevent the passage of enlargements on the yarn through the slub-detector whereby to break the yarn when the stopping mechanism is inoperative.

3. In awinding machine, the combination of 'stopping mechanism therefor, a slub-detector movable by the engagement therewith of an enlargement on the yarn feeding to the winding to actuate the stopping mechanism, means for resetting the stopping mechanism to start the operation of the machine, and means actuated thereby to return the slub-detector into operative position after it has been moved to actuate the stopping mechanism, said last-named means acting to hold the slub-detector from movement during resetting of the stopping mechanism tocause it to break the yarn should an enlargement appear thereon.

4. In a winding machine, the combination of stopping mechanism therefor, means for operating the stopping mechanism upon breakage or exhaustion of the, supply of the yarn feeding to the winding, a slub-detector operative by the passage therethrough of an enlargement on the yarn to actuate the stopping mechanism, means for starting the operation of 4the machine, and means operated thereby to set theslub-detector to prevent the passage therethrough of enlargements on the yarn whereby to cause the yarn to be broken.

5. In a winding machine, the combination of to initiate the action of the stopping. mechanism,

means for resetting the stopping mechanism to start the operation of the machine, and meansv v operated therefrom. to hold the slub-detector in closed position to prevent passage of enlarge- Kments therethrough whereby to break the yarn Loaders resetting the stopping mechanism to start the ersing strand material thereon, stopping operation of the machine, and means operated therefrom to restrain the yieldable means of the slub-detector from moving when an enlargement on the yarn engages therewith whereby to break the yarn to prevent passage of the enlargement into the package at the start oi' the winding operation.

7. In a winding machine, the combination of stopping mechanism therefor, a 'sinh-detector having 'a yieldable element adapted to be moved. by the engagement therewith of an enlargement on the running yarn to initiate the action of the stopping mechanism, a manually-operable lever for resetting the stopping mechanism vto start the operation of the machine, and means actuated from said lever to engage the yieldable element of the slub-detector to restrain thejlatter from movement when engaged by an enlargement on the yarn whereby to break the yarn to prevent the enlargement from reaching thev package being wound while the stopping nlechanism is inoperative. l

8. In a windingmachine, the combinati in of means for rotating the package, means for travechanism for arresting the rotation of the package, a `breakage-lever for actuating the stopping mechanism when the yarn breaks or its supply is exhausted, a slub-detector having a yieldable element adapted to be actuated by' the engagement therewith of an enlargement on the yarn to initiate the action of the stopping mechanism, manually-operable means for resetting' the stopping mechanism to start the operation of the machine, and means operated thereby for re setting the 'yieldable element in position to be engaged by an enlargement on the yarn and to hold said element against movement to cause breakage of the yarn while the stopping mechanism is inoperative. Y

9. In a winding machine, the combination of means forA rotating the package, means for traversing strandy material thereon, stopping mechanism for arresting the rotation of the package, a slab-detector having an element adapted to be moved Athrough the engagement therewith of a slub or enlargement on the yarn, means actuated by the movement of said element to initiate the action of the stopping mechanism, manually-operablemeans for resetting the stopping mechanism to start the operation of the machine, and yieldable means adapted to be actuated by the last-named means to reset the detector-element and to hold it in position to prevent the passage through the slubdetector of enlargements on the strand whereby to break the yarn to prevent imperfections from being wound into the package when the stopping mechanism is inoperative.

10. In a winding machine, the combination of stopping mechanism for arresting the wmdingoperation, a slab-detector having a yarn-rest across which the strand feeds, a movabledetester-element cooperating with the yarn-rest to provide a slit through which the strand draws, said element Ybeing adapted to be .moved by the engagement of an enlargement on the strand, meansactuated by the movement of said element to initiate theoperation of the stopping mechanism, means movable to reset the stopping mechanism to start the operation of the machine, and means actuated thereby to restrain the detector-element from movement during the resetting of the stopping mechanism.

1l. In a winding machine, the combination of stopping mechanism for` arresting the winding operation, a slub-detector having a :fixed elethe engagement therewith of an enlargement on the strand, means actuated by the movement of said detector-element to initiate the operation of the stopping mechanism, a lever for resetting the stopping mechanism to start the operation of the machine, and means movable with said lever to engage the detector-element to restrain the latter from movement to cause breakage of the yarn when an enlargement appears thereon during the starting of the Winding operation.

12. In a winding machine, the combination of stopping-mechanism for arresting the winding operation, a slub-deteotor having a iixed element across which the strand draws in feeding to the winding, a movable detector-element cooperating with the fixed element. to form a slit through which the strand feeds, said detectorelement adapted to be moved by the engagement therewith of an enlargement on the strand, a trip-lever in engagement with the detector-element and adapted tobe released by the movethe yarn whereby to -break the latter when the stopping mechanism is rendered inoperative during its resetting.

13. In a winding machine, the combination of stopping mechanism for arresting the winding operation, a slub-detector having a movable element adapted to be actuated by the engagement therewith of an enlargement on` the strand, means actuated by the detector-element to initiate the operation of the stopping mechanism,

a handle for resetting the stopping mechanism' to start the winding operation, and a yieldable element movable with the starting handle to engage the detector-element to return it to operative position and restrain it from movement to cause breakage of the strand when an enlargement Vappears on the yarnduring the starting of the winding operation.

le. In a winding machine, the combination of stopping mechanism for arresting the winding operation, a slub-detector having a lixed portion across which the yarn feeds, a pivoted blade cooperating with the iixed portion of the slubdetector to provide a slit through which the strand draws, said blade adapted to be moved by the engagement therewith of an enlargement on the yarn, means actuated by the movement of said blade to initiate the operation of lthe stopping mechanism, a starting levermov- LILOT@ running yarn and provided with a tr1gger-arm, a trip-lever for actuating the stopping mechanism normally held inoperative by the trigger-arm of the slab-detector, a lever for resetting the stopping mechanism to start the operation of the machine, and means carried by said lever to engage the sinh-detector to return it to operative position with its trigger-arm engaged with the trip-lever.

JOHN NELSON.

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