US1611890A

US1611890A - Winder

Info

Publication number: US1611890A
Application number: US140561A
Authority: US
Inventors: Howard D Colman
Original assignee: EDGAR S NETHERCUT
Current assignee: EDGAR S NETHERCUT
Priority date: 1917-01-04
Filing date: 1917-01-04
Publication date: 1926-12-28
Anticipated expiration: 1943-12-28

Description

Deco 28 1926.

HfucoLMAN WINDER Original Filed Jan. 4, 1917 mNN Bf-ec. 28 V926.

WINDER 191,7 9 Sheets-Sheet 4 Original Filed JanA L Dec. 28 1926.

H. D. COLMAN WINDER original Filed aan.' 4, 1917 9 Sheets-Sheet 5 n RESERVE 508mm T0 RESERVE THmano -cLnMp 2,6.

11 F |C.l7

NORMAL PosmoN or IL f, RESERVE THREAD (gf) ,f /lg /09 /f a my Dec. 28 1926.

H. D. COLMAN WINDER Original Filed Jan. 4, 1917 9 Sheets-Sheet G PIC. 20.

Wfwsses H. D. COLMAN WINDER 9` Sheets-Sheet '7 Original Filed Jan. 4, 1917 Flc. 27.v 2/6 E.naci 30,

Dec; 2s 1926. 1,611,890

H. D. CLMAN WINDER Original Filed Jan. 4, 1917 9 Sheets-Sheet 8 Prc. 31.

RUNNING POSITION Q6 FIG. 52. H

H. D. COLMAN WINDER Original Filed Jan. 1917 9 Sheets-Sheet 9 Dec.. 28

y J1: Lw M65.'

F'IC.40,

F'ICAL.

RUNNING THREAD Vil' Patented Dec. 28, 1926.

UNITED STTES PATENT OFFICE.

HOWARD I). COLIVIAN, ROCKFORD, ILLINOIS, ASSIGNOR, BY MESNE ASSIGNMENTS,

TO EDGAR S. NETHERCUT, OF :EVANS'ION,` ILLINOIS.

WINDER.

Application filed Januaryll. 1917, Sera1 No. 140,561. Renewed May 21, 1926.

This invention relates to machines for winding thread, yarn, twine or the like, and refers particularly to the rewinding of yarn or the like from a plurality of relatively small yarn masses to form a larger yarn mass. The invention is lapplicable to the rewinding of successive bobbins or other supply yarn mass-es to form a relatively large yarn mass or cop containing a single thread; to machines for simultaneously rewinding a plurality of'supply yarn masses to form asection beam or other relatively large yarn mass containing a plurality of warp threads; to doubling machines wherein a plurality of threads are wound parallel preparatory to twisting; and to various other types of winders.

The prime object of the invention is to produce an organization of parts which will permit uninterrupted winding at relatively high speed.

Among the subsidiary objects of the invention are to provide a magazine and mechanism for automatically bringing successive supply yarn masses into operative position; to provide simple and eective means for placing the running thread and a reserve thread in operative relation to a knotter; to provide means for actuating the knotter to tie the knot with the swiftncss required by the high rate of speed at which the machine is intended to operate; to provide means whereby the knotter may tie the knot before the end of the exhausted thread can pass the knotter; and to provide means whereby the winding of the receiving yarn mass may continue while the thread is clamped during the tying of the knot.

In the accompanying drawings, Figure l is a front elevation of a Winder embodying the features of my invention. Figs. 2 and 3 are sectional views of a detector-controlled circuit-closer. Fig. 4 is a fragmental plan view of the winder. Fig. 5 is a horizontal sectional View showing the reserve-thread hook and one of the stop pins for holding the reserve thread out of Contact with the tension-reducing means. Fig. 6 is a vertical sectional view taken approximately in the plane of dotted line 6 of Fig. 5. Fig. 7 is a front elevation of the parts shown in Fig. 5. Fig. 8 is a fragmental elevation looking from the left-hand side of Fig. l. Fig. 9 is a perspective view of a certain thread support. Fig. 10 is a view ofa circuit-closer. Fig. 11

is a view of a certain device comprised in the resetting means. Fig. 12 is a side view lookthe machine. Fig. 14. is a fragmental elevation illustrating the knot-tying mechanism. Fig. 15 isa fragmental detail illustrating the means for resetting the knetter-actuating shaft. Fig. 16 is a detail view of a certain thread-guiding plate. Fig. 17 is a view of certain of the parts shown in Fig. 14. Fig. 18 is a view of a thread clamp comprised in the knot-tying mechanism. Fig. 19 is a sectionalview of the thread clamp taken in the plane of dotted line 19 of Fig. 18. VFig. 20 is a fragmental vertical sectional view, looking forward. Figs. 21 and 22 are sectional views of an air valve. Fig. 23 is a fragmental vertical sectional view showing the magazine, the detector and the tension-reducing means. Fig. 24 is a sectional View of one of the reserve-thread clamps. Fig. 25 illustrates a means forV turning the detector shaft, the view being taken in the plane of dotted line 25 of Fig. 26. Fig. 26 is a vertical view of said turning means. Fig. 27 is a horizontal sectional view of the detector showing the parts in the normal or running position. Fig. 28 illustrates the position assumed by the detector'when the thread exhausts. Fig. 29 is a view showing the position assumed by the detector just prior to the insertion of a new thread into the detector. Fig. 30 is a horizontal sectional view through one of the skewers for supporting the bobbins. Fig. 31 is a horizontal sectional View showing the magazine, certain thread guides and the yarn clearer. Fig. 32 is a horizontal sectional view showing the means for turning the magazine and for opening and closing the yarn clearer. Fig. 33 is a fragmental horizontal sectional view through the magazine. Fig. 34; is a sectional View of the yarn clearer. Fig. 35 illustrates a pawl and ratchet included in the magazine-turning means. Fig. 36 is a horizontal sectional view taken in the plane of the main shaft. Fig. 37 is a fragmental detail of the tension-reducing means. Fig. 38 illustrates a certain threadcontrolling stop. Fig. 39 is a view taken in the plane of dotted line 39-'39 of Fig. 41,

and illustrating a belt shifter. Fig. 40 is a tragn'iental detail view of the means for locking the belt shifter. Fig. 41 illustrates a brake to stop the main shaft. Fig. 42 is a fragmental vertical sectional view of the tension-reducing means. Fig. 43 is a view of a portion of the periphery of the tension-ie ducing means.

The illustrative embodiment herein shown oi' the. invention comprises means for rewinding the yarn o1' successive bobbins a to torni a yarn mass 7). The running thread is indicated in the various views at az. The yarn mass isvllerein shown as consisting ot' yarn spirally wound upon a tubular `liangeless core c, but, as hereinbefore stated, the invention is not limited to the production of yarn masses of any particular character or size. The supply yarn masses also may be oi' various types and may be supported in various ways. I have herein shown ordinary warp bobbins with yarn wound thereon with the so-called warpwind, wherein the yarn is wound upon the bobbin in concentric cylindrical layers, as distinguished from the lilling wind, wherein the yarn is wound upon the bobbin in successive conical layers. 1n the machine herein illustrated, the bobbins are supported for the drawing of the yarn olii the ends of lthe bobbins, as warp-wound varn may be successfully drawn ott the ends oi" the bobbins at greater speed than lilling-wound arn.

The bobbins a are supported in a magazine 1 which may be oit' any suitable construction, that herein shown comprising a dish 2 (Figs. 1 and 23) having a hub 3 which is tixed upon a vertical spindle 4. Said spindle is rotatably mounted in bearings 5, (i and 7,in the supporting framework. Means hereinafter described is provided for rotating the magazinel step by step as required to move a spent bobbin out of running position and place a reserve b'obbin in ruiming position. The magazine is arranged to Contain eight bobbins, each of which is supported in vertical position upon a skewer 8. As indicated in F ig. 30, the skewer 8 consists oi a plurality ot longitudinal sections 9 movable radially in and out to clamp and release the bobbin. A contractile ring 10 (Fig. 23) encircling the lower portions ot the segments 9 tends to draw Athe segments together. rllhe skewer has an aunular shoulder 11 upon which the butt ot' the bobbin may stand. Above the shoulder 11/the skewer is provided with two

annular surfaces

12 and 13 adapted to engage the walls of the bore ot the bobbin when the skewer is expanded, the

surfaces

12 and 13 being spaced apart, as indicated in Fig. 23, in order that the bobbin shall be gripped at two separated places and thus be firmly and concentrically held at each ot' those places.

The means for expanding the sliewer coniprises' a pin 14 mounted in a tubular guide 15 carried by the plate The upper end ot' the guide 15 is upwardly tapered as at 16, and tits within the correspondingly tapered lower end of the skewer. The upper end of the pin 14 has a downwardly tapering surt'a-.e 17 adapted, when the pin 14 is moved downwardly, to 'torce the upper ends of the segments 9 apart and thus cause the skewer to engage the bobbin. A coiled expansion spring 18 surrounds the pin 14 within the guide 15 and bears against an annular shoulder 19 on the pin. It will be seen that the spring 18 tends to cause the tapered surface 17 to enter between the upper ends o1' the segments t) and also tends to move the skewer bodily downward over the tapered surface 16, the result being to 'expand the skewer into clamping engagement with the lease the bobbins in the rotation ol:I the maga azine by means of a cam liange 2O (Figs. 2?, and 32) on the bracket that supports the bearings 6 and 7. The low portion oilhe flange 2O is indicated at 21 in said tigures, the portion 21 being joined to the elevated portion oi' the flange by the inclines 22 and 23. In the rotation o1 the magazine the pins 14 are moved around on the tlange 2o. Then the pins are on the elevated portion of the tlange, the skewer is in the contracted condition shown at the rightdiand side ot Fig. 23. l-Vhen the pins 14 are above the low portion 21, the skewers are in the ezipanded or clamping condition shown at the left-hand side of Fig. 23. (The bobbin-supporting, clamping and releasing means is claimed in my divisional application Serial No. 149,346, filed Nov. 19, 1926.)

The magazine 1 further comprises partitions 24 Vforming individual compartments for the bobbins. The outer sides ot' these ycompartments are open for the removal oli empty bobbins and the insertion ot' full bob-VV illu lit)

said disk having a peripheral upwardly-extending flange 28. Pivoted to the flange 28 at 29 are the arms 30, each arm being adapted to clamp a. thread against the flange 2S. The free end 3l of the arm 30 is bent out` wardly to form with the flange 28 a flaring throatway or guide 32 to receive the thread. A stud 33 fixed to the arm 30 projects freely through an opening in the flange 23. Between the flange 2S-anct a washer on the stud 33 is an expansion spring 34 that normally holds the arm against theflange 2S to clamp the thread.` A lug 35 on the arm 30 extends under the disk 27 and limits the extent to which the thread may beinscrted between 'the arm 30 and the fl ange 28.

The means for successively opening the clamps 2G to release the threads held there in comprises. in this embodiment of the invention, a. flange 36 on a part fixed to the framework of the machine, said flange lying within the path of movement of the studs 33 and having an inclined or cam portion 37 (Figs. 4 and 24) for forcing the arm 3() away from the flange 23 to release the thread. After being' thus "opened, the clamp is held open by thev flange 36 until the stud 33 reaches the cam portion 37L (F 4) when the spring 34 is allowed to close the clamp in readiness to 'receive the thread of a new bobbin.

Means is provided to form a guide for the thread at a point in alinement with the axis of the bobbin. This means includes a flange 39 (Figs. 23 and 3l) uponthe upper end of the curved wall 25. The edge 40 of said flange is curved upon the arc of a circle concentric with the magazine l. The ledge 4l of the flange serves to guide the threads of successive bobbins onto the edge 40. To cooperate with the edge 4.() in guiding the thread there is provided for each compartment of the magazine a thread guide 42 having a notch 43 tol receive the thread and inclined edges 44 to guide the thread to said notch. Each thread guide 42 is xed to the upper end of an arm 45. said arm being pivoted intermediate its ends at 46 to a support 47 fixed to the spindle 4. The lower ends 0f the levers lie within a cam groove 4S of a. stationary disk 49. tated, the levers 45 are swung to move the thread guides into and out of operative position. As shown in Figs. 3 and 32, the cam groove 48 is of such form as to move the thread guides 42 into operative relation with the edge 40 of the flange 39 as the compartn'ients of' the magazine approach the running position. Upon the upper end of each lever 45 is a projection 50 (Figs. 23 and 31) that lies within a groove 51 formed in the lower side of a disk 52 fixed to the spindle 4. The projection 50 and the groove 51 prevent lateral movement of the levers 45 and thread guides 42. The projection 50 -is rigid with the and 73.

As the magazine is ro-y also serves by engagement with the outer end wall 53 of the groove 51 to limit the outward movement of the thread guide 42. the notch 43 being thus accurately located in axial alinement with the bobbin.

The means for rotating the magazine 1 step by step comprises an arm 54 (Figs. 8 and 35) rotatably mounted upon the spindle 4 between the bearings 6 and 7. Said arm carries a pawl arranged to engage a ratchet wheel 56 fixed to the hub 3 of the disk 2. A torsion spring 57 (Fig. 8) holds the dog in engagement with the ratchet wheel. Rigid with the arm 54 is an arm 58 Awhich is connected by means of a link 59 with an arm 60 which is loosely mounted upon a constantly-rocking shaft- (31. rlhe means for connecting the arm (SO 4to the shaft. (S1 when the magazine is to be turned comprises an arm (32 (Figs. 8 and 13) which arm 60. On the arm (S2 is pivoted a dog (33 adapted to engage a shoulder ($4 (Fig. l1) on a segment (l5 fixed tothe shaft G1. On the segment is a shoulder 6G arranged to engage one' side of the arm ('32 to move said arm intothe position shown in Fig. 8. It will be seen that the shoulder G4 when engaged by the dog 63 moves the arm 62 in the direction to turn the magazine l, and that the shoulder 6G moves the arm (S2 inthe opposite direction. A. spring 63 connected at one end to the arm (32 and at `its other end to a finger 63" which is rigid with the dog 63 tends to throw the dog into the path of oscillation of the shoulder (S4. rl`he means for holding the dog up out of the path of said shoulder until the ruiming thread exhausts, will be hereinafter described. The shaft G1 is rocked by means including a crank arm (S7 (Figs. 12 and 13) fixed on said shaft and connected by means of a link G3 to a crank disk ('39 .fixed on a shaft 70. rl`he shaft is driven from a shaft 71 through intermeshing gears 72 rlhe shaft 71 is driven from a shaft 74 by means of a belt 75 running over

pulleys

76 and 77. The shaft 74 is driven from a shaft 78 through a belt 79 ruiming over sheaves kS0 .and 81 (Fig. l). rhe shaft 78 is driven in any suitable way, as, for exainple,'from a counter-shaft (not shown) by means of a belt 82 (Fig. 3G), which belt is arranged to run over a tight pulley 83 and a loose pulley S4 on the shaft 78.

At the end of each movement, the magazine is held stationary by reason of the friction between the pins 14 and the flange 20. T he arms t() and ('32 are frictionally held in the position. to which they are returned b v the shoulder (56 by means of a. clamp comprising two clamp members 85 (Fig. 13) arranged to lie at opposite sides of the Varm ($2 and carriel by a stationary bracket 8G. To one of the clamp members 85 is fixed a pin S7 which extends loosely through the l it) otherl clamp memberI and through the bracket. An expansion spring 88 interposed between said other clamp member and a wash er on the pin 87 presses the clamp members against the arm. The clamp members are preferably covered with leather or other suitable friction material.

After passing through the thread-guiding notch 43, the running thread extends through a yarn clearer comprising two stationary blades 89 and 90 (Figs. 31 and 34) and a notched blade 91 adapted to enter the space between the

blades

89 and 90. The lower blade 89 has a sharpened edge close to which the thread runs, said edge and the cooperating blade 91 serving to clear the yarn of foreign matter and to break a thread having a gout therein. The blade 91 is fixed upon a shaft 92. The normal position of the blade 91 is determined by contact of a stop screw 93 carried by said blade with a fixed stop 94. To the lower end of the shaft 92 is fixed an arm 95 (Fig. 32) to which is connected a tension spring 96 that tends to turn the shaft 92 to move the blade 91 away from the

blades

89 and 90. 95 (Fig. 32) is a stop to limit the opening movement of the yarn clearer blade 91. Also fixed to the lower end of the shaft 92 is an arm 97 which is arranged lto be engaged by an arm 98 that is rigid with the arm 58. )Vlien the arm 58 is moved in the direetion to turn the magazine 1, the arm 98 is swung away from the arm 97, thus permitting the spring 96 to open the yarn clearer. lVhen the arm 58 is returned to normal position, the arm 98 engages the arm 97 and thus closes the yarn clearer upon the new thread. The mechanism is arranged to press the stop 93 firmly against the stop 94 and thus hold the blade 91 stationary in proper position.

After leaving the yarn clearer, the running thread extends through a detector 99 to be hereinafter described, and thence into contact with a mechanism for vreducing the tension of that portion of the thread extending from a point relatively close to the detector 99 to and beyond the knotter. This mechanism is provided in order that the tension of the thread shall be greatest n the region etween the bobbin and the ten sion-reducing means and thus insure that breakages hall not occur inthe region beyond the ension-reducing means. It also is desirable to keep the tension of the thread as low as possible in order that it may be wound upon the yarn carrier 0 with the least practicable degree of tension. The tension-reducing means neutralizes the tension caused by the contact of the thread with the various parts against which it runs. The tension-reducing means comprises a driven roll having a surface speed which is greater than the speed of winding of the thread.

vreserve position indicated in Fig. 31 is tied to the exhausted thread and commences unwinding a few moments before it is transferred to the running position, Lpileferably provide two V tension-Mredpumc'ing means," one for the thread while it is 'being'unwound from a bobbin in the reserve position, and the other for the thread afterv its bobbin has been placed in the running position. Bot-h of these tension-reducing means are identical in construction and are indicated at 100 and 101 in Fig. 36. Each consists of a wheel 102 fixed upon the shaft 78 and carrying a peripheral series of staggered pins 103. The pins are staggered as shown in F 43 in order to cause the thread to bend as it passes froln one pin to the next, thus producing'a considerable arc of contact between the thread and the pins and thereby providing a sufficient amount of friction between the pins and thread. Alternate pins are inclined in opposite directions as indicated in Figs. 36 and` 43, so that the pins provide in effect a groove, V- shape in cross-section, upon theperiphery of the wheel 102 to receive the thread. The thread does not run in contact with the periphery of the wheel 102. When there is a momentary increase in the tension of the thread between the bobbin and the tensionreducing means, the thread is drawn farther down between the pins 103, whereby the are of contact of the thread with the pins is increased, thus increasing the effectiveness of the tension-reducing means. When the tension of the thread between the bobbin and the tension-reducing means decreases, the thread moves farther out on the pins, thereby reducing the effectiveness of the tension-reducing means. ter thus equalizes the tension of the thread in the region beyond the tension-reducing means.

At each side of the series of pins 103 is a ring 104 fixed to the wheel 102. The adjacent portions of the rings 104 overhang the points of the pins 103 to prevent the thread from fouling on the pins, and the adjacent surfaces of said overhanging portions are inclined so as to permit the thread to move easily into and out ofengagement with the pins. The two middle rings 104 are united by a cylinder 105. It will be seen that the rings 104 and cylinder 105 constitute in effect a roll having near each end a V-shape groove to allow the thread to pass into contact with the pins 103. The ring 104 at the side from which the reserve thread approaches is partially overhung by an annular flange 106 fixed in the framework of the machine, said flange preventing the thread from passing down beside the end of the roll. i

The knetter may be of any suitable type.

The latpinion meshes with a gear segment 110 simi-l lar to the segment illustrated in said application. The segment 110 is fixed upon a shaft 111 that is mounted in bearings 112 and 113 (Figs. 4 and 17). The tying bill 107 normally stands in the position shown in Figs. 4 and 14 and the active thread runs within the angle formed between the tying bill and its shaft, as indicated in Figs. 4, 14 and 17. At the side of the .tying bill from which the thread approaches is a stationary plate 114 (Figs. 14 and 20) having a threadguiding notch 115 therein. Directly behind said plate Vis an exhaust air tube 116, the mouth of which has a notch similar to the notch 115, said notches being in register with each other. The tube 11G is connected with a suitable air-current-creating means (not herein shown). Between the tube 11G and the tying bill 107 is a stationary plate 117 (Figs. 14 and 17), said plate having a notch 113 therein. The running thread e1'- tends through the lower portion of said notch. as indicated in Fig. 17. The reserve thread normally stands in the upper portion of the notch 118 as shown in Fig. 17.

A spring finger 119 bears against the forward side of the plate 117 and is arranged to push the reserve thread from its normal position and into place alongside the exhausted thread in order that the tying bill may loop the two threads together. The

' linger 119 is fixed upon a rock shaft 120.

Also fixed to said shaft is a crank disk 121 (Fig. 20) carrying a crank pin 122 that lies. in the slot of a cam 123, which cam is fixed upon the shaft 111. By reference to Fig. 20, it will be seen that the shaft 120 is rocked to place the reserve thread beside the exhausted thread and clamp both threads at the lower end of the slot 118 at the beginning of the knotter-actuating movement of the shaft 111. The linger 119 is made broad as shown in Fig. 1.7, so that when the waste ends are exposed to the suction current, 'said endsshall not foul on the finger 119.

Rearwardly of the tying bill is a means for clamping the exhausted thread andthe reserve thread. which means comprises a clamping member 124 (Figs. 18 `and 19) fixed upon the rock shaft 1240, and two stationary spring clamping jaws 125 between which the threads are forced by the clamping member 124. The clamping member 124 is arranged to swing between two

stationary plates

126 and 127, each having a threadguiding slot 128 therein.

Between the plate 127 and the tying bill is a stationary plate 129 (Figs. 14 and 16) having a tlu'ead-receiving slot or notch 130. The slots 12S-and 130 are of the same size and shape and register with each other. As indicated in Fig. 17, the slot 118 is not so deep as the

slots

128 and 130. Thus the clamp finger 119 acts to clamp the threads early in the cycle of the tying operation, and thereby enables the winding to take out the slack in the exhausted thread (caused by the jumping of said thread when it exhausted) before the tying bill engages the threads to form the loops.

The means for pulling the loops of the knot off the tying bill, for drawing the loops tight and for pulling the ends of the united threads outl of the tying bill comprises a stripper arm 131 fixed upon the shaft 111 and having a forked end to engage the united threads. The stripper arm 131 is arranged to swing through the space between the `

plates

127 and 129, as shown in Figs. 14 and 19.

The means for actuating the knotter to tie the knot with great rapidity comprises a vtorsion spring 132 surrounding the shaft 111, one end of said spring being secured to the framework of the machine and the other end of the spring bearing against a pin 133 (Fig. 20) upon an arm 134 fixed on the shaft 111. The knotter is normally held in the initial or thread-receiving position by means including a collar 135 (Fig. 17) having a shoulder 13G that supports the arm 134 against the torsion of the spring 132.

The collar 135 is fixed upon a shaft 137 (Figs. 4 and 14) which is supported at one end in an arm 138 (Figs. 14 and 20) pivoted at 139 in the framework of the machine to swing toward and away from the shaft 111. On the lower end of the arm 138 is a projection 140 which is normally held against a 'stationary stop portion 141 by an expansion spring 142. The end of the shaft 137 that carries the collar 135 is supported 1n the yieldingly mounted arm`138 in order that the collar 135 may bel forced aside by the arm 134 as said arm is being reset to normal position. lAs soon as the arm 134 has passed the shoulder 136, thespring 142 forces the shoulder`136 beneath the arm 134 to retain the arm. 134 in initial position.

' The shaft 137 is normally held in the posi-` tion shown in Fig'. 17 by means of the detwo

stationary plates

144 and 145,*the inner end of which throatway is adjacent to and is directed toward the tension-reducing means 100. The ieserve thread stops against two pins 146 and 147 (Figs. 5, 6 and 7), which pins are supported for simultaneous movement into and out of the inner end of the throatway. For convenience in manufacture, the

pins

146 and 147 may form the legs of a U-shaped piece of wire, as herein shown.

The means for drawing the reserve thread into proximity to the knotter comprises a hook 148 (Figs. 4, 8 and 20), which hook is 1 pivotally mounted upon an arm 149, said arm being pivoted to the framework at 150. The arm 149 is swung by means of a link 151 extending to the arm`62. Rigid with the hook 148 is an arm 152 carrying a roller is an adjustable stop carried by the arm 149,

against which stop the arm 152 is forced as the roller stud 153 approaches the inner end of the cam slot 154 for the purpose of holding the hook 148 against vibration when in normal position. Such vibration would tend to cause the reserve thread to become slack.

lVhen the arm 149 swings forwardly, the hook 148 is swung upwardly into the dottedline position indicated in Fig. 8 and is thus carried over a partition or guard-plate 159, said plate extending from a point above the knotter to a point close to the tension-reducing roll and the stop pins 146 and 147. As indicated in Figs. 6 and 7, the

plates

144 and 145 are notched to accommodate the point of the hook 148. It will be noted in Fig. that the edge 160 of the hook 148 is inclined so as to lpush the reserve -thread aside as the hookadvances. As soon as the point of the hook has passed the thread, the thread returns to the position shown in Fig. 5. Upon the rearward movement of the hook 148, the point of said hook catches the reserve thread between the

pins

146 and 147 and draws a bight or loop of the thread rearwardly, the thread to form such loop unwinding from the. bobbin. The inclined edge 161 (Fig. 5) of the hook 148 crowds the strand g/ (Figs. 4 and 6) of the loop over to one side. The strand 3/ is drawn by the hook 148 along one side of the partition or guard plate 159, while the strand a is drawn by the hook 148 along the other side of the guard plate 159 and through a channel 162 (Fig. 7). Said channel is formed of the guard plate 159. a bottom wall 163 and a vertical wall 164, the

parts

159, 163 and 164 preferably being formed from an integral piece of sheet metal. As the hook 148 completes its rearward movement, it is swung downwardly through the action of the inner end of the cam slot 154 8) upon the roller stud 153. As the hook 148 is thus swung downwardly, the strand g/ is laid upon a stationary thread support 165 (Figs. 8 and and the strand a is lowered into the throatways 115 (Fig. 20), 118 (Fig. 17), 130 (Fig. 16), and 128 (Fig. 18). The strand 2 then occupies the position shown in Figs. 4, 14 and 17. The strand y extends to the reserve bobbin, while theA strand e extends to the reserve thread clamp 26 and is destined to be. sheared oft' by the tying bill and be withdrawn through the suction tube 116.

A moment before the knot is tied, the

pins

146 and 147 are withdrawn in order that the strand 3*/ may drop into engagement with the Qntion-reducing means 100, and to pros vide slack in thc strand e, which slack is later given up to the tying bill. Said pins are move-d by means of a lever 166 (Figs. 4 and 5) pivoted at 167. The lever 166 is connected by means of a link 168 to a. crank arm 169 (Fig. 17) fixed on the shaft 120, the

pins

146 and 147 being thus withdrawn at the beginning of' the knotter-actuating movelent of the shaft 111.

lt is necessary that there shall be sufi'icient thread between the detector and the knotter so that the end of the exhausted thread shall not pass the knotter before the knotter is actuated to tie the knot. Inasmuch as the machine herein shown is designed to operate at high speed, the necessary length of thread between the detector and the knotter is obtained by looping` the thread between those points, the loop being clearly shown in Fig. 8. rl`he loop is produced by means of an arn'i 17() pivoted in the framework of the machine and provided at its free end with a plate 171 having a notch 172 (Figs. 4 and 13 in its lower edge. Rigid with the arm 170 is a gear segment 173 (Fig. 8) that meshes with a gear segment 4174Wwhich is rigid with the arms 'adrift/32. lVhen the arm 17() swings downwardly, the lower edge of the plate 171 engages the ruiming thread and draws it down into the form of a loop as shown in Fig. 8. The plate 171 is made of considerable height and width inl order that when the free end of' the exhausted thread jumps said free end shall be kept away from the ascending side of the loop and thus prevented from tangling.

In order that the winding of the yarn mass Z) may continue while the thread is clamped at the knotter, I support a portion of the thread between the knotter and the yarn mass 7) in the form of a releasable loop. From thc knotter the ruiming thread extends to a thread support 175 (Figs. 4 and n n..wif .1. 8;. thence at a` iigii. anoie to a thiead Ouide f'-'. 1 n r',- t'. 1.46, tnence past a detector 1i r, thence around a tension-reducing sheave 178 havin a peripheral speed greater than the speec of winding, thence to a thread guide 179 (Fig. 1), thence through the notch of a thread-guiding plate 180 (Figs. 1 and 4), and thence to the winding means. When the knotter is actuated to clamp the running thread and the reserve thread, the running thread is released from the thread support 175. In the continuation of the winding the ruiming thread is then drawn into a straight line joining the thread guide 176 and a stationary thread guiding plate 181 (Fig. 8), as indicated at in 4. The plate 181 has a widely-flaring notch 182 to receivethe thread. The path of' the thread between the

points

182 and 176 is sufficiently shorter than.

the path defined by the

points

182, 175 and V 176 to allow the exhausted thread and the reserve thread to be tied ltogether andthe knot to be released from the knotter by the stripper 131 (Fig. 17) and the clamp member 124 during the continuance of the winding. The thread support 175 (Figs. 8 and 9) is formed on a plate 183 which is fixed to the link 151. When the arm 149 swings forwardly to take a new reserve thread, the

plate 183 is drawn forwardly to a position alongside the thread guide 181, the inclined upper edge 184 of the plate 183 crowding the running thread up a little until the support 175 is forward of the running thread, whereupon the thread snaps .down behind said. support 175. The lug 175 of the support 175 supports the thread while the support 175 is forward of the notch 182. Wfhen the arm 149 swings rearwardly with the new reserve thread, the plate 183 moves the thread rearwardly to the position shown in Figs. 4 and 8, thus reestablishing the normal path of the running thread.

The means hereinbefore referred to for disengaging the thread from the support 175 comprises a finger 185 (Figs. 4 and 13) carried by the shaft 111, the free end of which finger normally underlies the running thread directly in front of the support 175. i/Vhen the knotter is actuated to clamp the running thread, the linger 185 swings upwardly, thereby knocking the running thread off the support 175. In order to prevent breakage in case the finger 185 should be actuated while the lug 175a is moving rearwardly above said finger, the latter is preferably of spring construction in order that it may yield. Herein it is shown as held by a torsion spring 186 against a stop 187 carried by-the shaft 111.

The means for resetting the knotter-actuating shaft 111 comprises a pinion 188 (Figs. 4, 13 and 15) loosely mountedon said `shaft and meshing with a segment 189 carried by a lever 196 pivoted in the supporting frame. The lower end of the lever 190 carries a roller stud that lies in the groove of a cam 191, which cam is rigid with the

arms

66 and 62 and the segment 174. On one side of the pinion 188 is a lug 192 (Fig. 15) which is arranged to engage a shoulder 193 on a collar 194 (Fig. 4) fixed on the shaft 111. When the shaft 111 is released by the shoulder 136 to the action of the torsion spring 132, the shoulder 193 swings in the directionl indicated by the arrow a in Fig. 15. )When the shoulder 64 of the segment 65 (Fig. 11) engages the dog 63 and moves the

arms

60 and 62, the segment 174 and the cam 191, the pinion 188 is moved in the direction indicated by the arrow Z) in Fig. 15, in which movement the lug 192 engages the shoulder 193 and moves said shoulder into the position shown in Fig. 15. When the segment 65 swings in the opposite' direction, the pinion 188 is returned to the position shown in Fig. 15.

When the arm 134 is released by the shoulder 136, it is swung by the torsion spring 132 against a buffer or yielding stop 195 (Fig. 26) carried by an arm'196 fixed on a shaft 197. A torsion spring 198l (Fig. 4) surrounding the shaft 197 is secured at one end to a stationary part and bears at its other end against the arm 196, said spring normal ly holding the arm 196 against the stop pin 199. The spring 198 is stronger than the spring 132. Vhen the arm 134 strikes the stop 195, said stop yields to the extent in'- dicated by dotted lines in Fig. 26, the spring 198 immediately returning the arm 196 into Contact with the stop 199. The slot of the cam 123 has a dwell portion of sufcicnt length to allow the shaft 111 to move through the arc indicated by the full and dotted-line positions of the stop 195 in Fig. 20, without moving the clamping linger 119 (F)ig. 17) or the clamping member 124 Fig. 18 f Upon the rear end of the shaft 197 is mounted a detent linger 266 (Fig. 8) which normally lies behind the finger 631 and thus holds the dog 63 out of the path of oscillation of the shoulder 64 on the segment 65. The rocking movement of the shaft 197 caused by the impact of the arm 134 against the stop 195 causes the detent linger 200 to be swung away from the finger 63", whereupon the spring 63a places the dog 63 in the path of movement of the shoulder 64. The detent finger 266 immediately returns into position in front of the finger 63, due to the action of the spring 198. In order that the finger 63b shall be able to pass the finger 206 as the segment 65 .swings upwardly, the finger 266 is pivoted on the shaft 197 and is yieldingly held by a spring266a (Fig. 12a) against a stop pin 266b on a finger 266c fixed to the shaft 197. The spring 266a is connected at one end to the pin 2661. and at its other end to a wire 206d fixed to the nger 266.

There is no suction current in the tubiJ 116 until after the knot has been tied. As shown in Fig. 21, a. valve casing 261 is conlation with the grid.

nected into the tube 116, said casing containing a valve member 202 fixed to a spindle 203. Rigid with said spindle is a crank arm 204; (Fig. 20). A tension spring 205 is connected to a pin 206 carried by said crank 'arm and to a stationary point in the frame of the machine. Rigid with the crank arm 204; is an arm 207 which is arranged to top against the portion 208 of the frame. 209 is a stop pin limiting movement of the crank arm 204 in one direction. The spring 205 tends to hold the arm 207 in contact with the stop 208 or to hold arm 20sL in contact with the stop 209. Rigid with the arm 196 is an arm 210 which normally lies alongside the pin 206. Vhen the arm 193 is moved through the impact of the arm 134 thereagainst, the

arm

21,0 places the valve member 202 in open position, the spring 205 serving to hold the valve member 202 in sach position against the tendency to rebound. In the early portion of the resetting operation, the cam 191 resets the knetter-actuat ing shaft 111. As said shaft approaches its initial position, the cam 123, acting upon the roller stud 122, causes the clamping linger 119 to release the portion of the exhausted thread and the strand .a of the res-erre thread which were sheared olf by the'tying bill 107. At about the same moment, the reserve thread clamp 26 holdingl the strand is opened through the movement o f the magazine 1, whereupon said portionsl of the exhausted and reserve thread are drawn into the suction tube 116 and carried away by die exhaust current.

lVhen the arm 149 swings for *ard to take a new reserve thread, a projection 211 (Figs. 8 and 20) on the arm 149 engages and moves the arm 207, thereby closing the valve meniber 202, in which position the valve member is held by the spring 205.

The detector mechanism is located in the path of the running thread when running in engagement with the tension-reducing means 101 36.) Said detector mechanism comprises a stationary grid consisting, in this instance, of three parallel wires 212 iigs. 20 and 27). A wire 213 projects beyond the grid Wires 212 and has its free end turned forwardly (as shown in Fig. 36) to assist in guiding the running thread into proper re- The detector further comprises two parallel fingers 2111 arranged to swing through th-e spaces between the grid wires 212, said fingers being fixed to a vertical rock shaft 215. To the forward end of the shaft 137 that serves to lock the knotter-actuating shaft 111 against the action of its torsion spring 132, is fixed an arm 216 (Figs. 23 and 26) having two

lugs

217 and 218 arranged to bear against

fiat surfaces

219 and 220, respectively, upon the detector shaft-215. As shown in Fig. the

lugs

217 and 218 are in different vertical planes, the

flat surfaces

219 and 220 also being in different vertical planes. The

lugs

217 and 218 bear against the fiat surfaces 219 and 220 at one side of the axis of the shaft 215. By reason of the offsetting of the

lugs

217 and 218, said lugs act in succession to turn the shaft 215 through the required aic.

The normal position of the detector fingers 214: is shown in Fig. 27, the lingers being held in this position by the tension of the ruiming thread and thus serving to lock the shaft 137 against rotation due to the pressure of the arm 13h17 against the shoulder 136. 1V hen the thread exhausts, there is nothing to restrain the arm 134, the shaft 137 being turned in the downward swing of said arm 134 andthe lugs 217 and 218 causing the shaft 215 to turn into the position indicated in Fig. 28. lVhen the shaft 137 is turned by the arm 131 a pin 221 (Figs. 14 and 20) on the shaft 131' swings against a pin 222 carried by au arm 223 fixed upon the forward end of a shaft 221. To the rear end of the shaft 224i is fixed a crank arm 225 (Fig.

.13) which has a pin-and-slotconnection with thus moves said shaft in the return or foi'- ward direction. Aftervthe arm has moved the shaft a distance through pressure against the pin 226, a vlug 227 on the arm 216 engages a pin 228 ou the detector shaft and completes the movement of the detector shaft into the position shown in Fig. 29. The detcctor fingers 214- are thus placed in position to receive the running thread. 229 is a stationary stop linger lying in the path of the forward swing of the lower detector finger 214 and serving to limit such forward movement of the detector fingers.

After the arm 216 has moved the detector shaft into the position shown in Fig. 28, the shaft is free and may turn in the forward direction. If it should do so, the

lugs

217 and 218 would press against the `periphery of the shaft in the resettingoperation. In order that the shaft 137- may yield longitudinally in such event, the shaft 137 is mounted for slight longitudinal movement, being yieldingly held in normal position by an expansion spring 137- (Fig. 1&1) bearing against a disk 137b that lies at oneend or th-e shaft 137. Normally the spring 137'L1 does not exert any pressure against the shaft, as the plate is held against the end wall of the recess containing said plate and spring, and thus prevented from bearing against the shaft.

It is desirable that the transfer of the running thread from the tension-reducing means 100 to the tension-reducing means 101 shall be effected in the shortest possible space of time so that the interval during which the thread is out of engagement with said tension-reducing means shall be as short as possible in order that the tension of the thread in the region between the tension-reducing roll and the knetter shall be as nearly uniform as possible. I, therefore, provide -a stop finger 230 (Fig. 36) which for convenience is loosely pivoted upon the upper end of the shaft 92. Pivoted to said stop linger is a rod 231 (Fig. 8) that extends through a guide 232 in the frame of the machine. A collar 233 on the rod 231 is normally held against the guide 232 by a tension spring 234 (Fig. 3G). The free end of the finger 230 lies close to one side of thetension-reducing nieanslOQ so as to prevent the thread from leaving said tension-reducing opening in a guard plate 235 (Figs. 1 and 38) which is arranged beneath the tensionrec ucing roll and extends from a point close to said roll to a point close to the path of movement of the thread guides 42.

After the magazine 1 has been turned to bring into running position the bobbin which has just been tied to the exhausted thread, the stop finger 230 is swung forwardly to allow the thread to spring sidewisel (under the tension of the winding) out of engagement with the tension-reducing means 100 and into 4engagement with the tension-reducing means 101. The stop 230 is thus moved by a cam projection 236 (Fig.-

8) on the lever 1,70, said projection being on the rear end of the rod'231d. lll'nmediately thereafter the arm 170 descends, thus allow- `ing the stop linger 230 to return to its normal position, as shown in full lines in Fig.

y 30. ln the descent of the arm 170, the lower ferred to hereinafter.

The winding means maybe ot any character suited to the production of the desired form of yarn mass. ln the illustrative embodiment herein shown, I have employed a winding means substantially identical with that fully disclosed in application Serial No. 5.503, tiled February 1, 1915 (Patent No. 1.274.386, dated August 6, 1918). The winding means comprises a drum 237 (Figs. 1 and 12) fixed upon the shaft 74. The yarn The end of th-e finger' 230 enters anmass Z) is supported in peripheral contact with the periphery of the drum 237, the thread being rapidly traversed back and forth upon the periphery of the yarn mass by means of a cam groove 238 in the periphery of the drum, as shown in said application-Serial No. 5,563. The thread after leaving the thread guide 180 may, if desired, extend through a guide 239 similar to the one fully disclosed in said application Serial No. 5,503. The yarn carrier c is rotatably mounted upon an arm 241 which is pivotally supported in .the framework in order that the yarn mass b may be manually withdrawn from the drum 237 when said yarn mass has reached the desired diameter, and so that ano-ther yarn carrier c may be substituted for such completed yarn mass. Any suitable means may be provided for preventingl the yarn mass from becoming eccentric, as, for example, a means similar to that fully disclosed in said application.

ln order to stop the machine in certain contingencies hereinafter mentioned, I provide suitable means, as, for example, a brake drum 242 (Figs. 36 and 41) fixed upon the drive shaft 7 8, said drum being arranged to be gripped by two brake members 243 pivoted to the machine frame at 244. A tension ispring 245 tends to movethe brake members 243 into engagement with the drum 242. The upper ends of the brake members 243 are connected by means of links 246 to diametrically opposite points upon a crank disk 247 rotatably supported in the machine frame. Rigid with the crank disk 247 is an arm 248 which is normally held in the dotted-line position shown in Fig. 41 by a latch 249l pivoted inthe machine frame. Rigid with the latch 249 is an arm carrying the armature 250 of an electromagnet 251. When the arm 248 is held by the latch 249, the brake members 243 are locked out of engagement with the drum 242. Vhen the electromagnet 251 is energized, it attracts the armature 250, thereby releasing' the arm 248, whereupon the spring 245 swings the arm 248 into the full-line position shown in Fig'. 41, and draws the brake members 243 into engagement with the brake drum, thereby promptly stopping the machine.

Simultaneously with the application of the brake members 243 to the drum 242, the drive belt 82 is shifted from the tight pulley 83 to 'the loose pulley 84 by means of abeltshifter 2" 2 (Fig. 39). An expansion spring 253 tends at all times to move the beltshifter 252 in the direction to shift. the belt to the loose pulley. The belt-shifter is normally held against such movement by means of a `latch 254 (Fig. 41) pivoted in the machine frame and engaging a shoulder (Fig. 40) on the belt-shifter 252. lVhen the brake members are drawn against the belt and the application of the brake, the

circuit of the electromagnet 251 is opened. I have shown an ordinary knife-switch 257 (Fig. 41) which is included in the magnet circuit, the movable contact member 257a of which is rigid with an arm 258 that overlies the arm 254. l/Vhen the arm 248 rises it lifts the arm 258 and thus opens the switch 257. l

The magnet 251 is arranged to be energized if for any reason the portion of the running thread extending to the guide 176 should become slack or if there should be no thread at said guide. At 177 (Fig. 1) are located two notched thread-supporting plates 259 (Figs. 2 and 3), across which the thread runs, A pivoted detector finger 260 rests upon the thread between t-he plates 259. Rigid with the pivot of the detector nger 260 is a grounded contact member 261 arranged, when the detector finger drops, to swing into contact with a stationary electrical contact 262 in the circuit of the electromagnet 251. It will be seen that if the thread should slacken sufficiently to allow the detector finger 260 to swing downwardly, a circuit would be closed through the electroiragnet 251', thereby stopping the machine.

It may be stated that the thread loop released by the finger' 185 is drawn up so rapidly in the winding operation that the detector 260 has not time to cause a closing of the circuit.

In order to stop the machine in the event that a thread should become wound around the tension-reducing means 100 or 101, I provide two feelers 263 (Figs. 23 and 36), one for each of said tension-reducing means. Said feelers are fixed upon a rock shaft 264. A torsion spring 265 (Fig. 36) normally holds the feelers 263 in close proximity to the pins 103, the action of the spring being limited by contact of an arm 266 (Fig.'10) fixed on the shaft 264 with a stop pin 267. In case a thread should become wound around the tension-reducing means 100 or 101, the thread will force the feelers 263 downwardly, thereby bringing the arm 266 into contact with an electrical contact 268` which contact is connected into the circuit of the electromagnet 251. )When the members 266 and 268 are thus brought together, a

circuit is closed through the electromagnet and the machine promptly brought to a standstill.

tector 99 incident to such stopping would cause the knotter-actuating shaft 111 to be released. In order to prevent such release and thus prevent the running thread from being clamped and sheared at the knotter, I provide a hook 269 (Fig. 39) fixed to the belt-shifter 252, said hook being arranged to engage a pin 270 fixed on the shaft 137 and thereby rock the shaft 137 into position where the shoulder 136 can support the arm 134 of the knotter-actuating shaft 11A IVhen the machine is braked, the stoppage is, of course, not instantaneous. If the detector 99 (Fig. 23) were to act just before the belt-shifter 252 (Fig. 39) operated to shift the drive belt 82 to the loose pulley 84, the shoulder 64 (Fig. 11) might engage the dog 63 and begin to reset the mechanisms, but would not be able to complete the reset,- ting operation before the machine came to a standstill. To prevent such partial resetting of the mechanisms while the machine is coming to a stop, I provide a lever 271 (Figs. 4 and 8) pivoted to the machine frame at 272 and having upon one side a block 2'( 3 (Fig. 12") that underlies a pin 274 fixed to the dog 63. The free end of the lever 271 rests at all times upon a pin 275 carried by a crank arm 276 fixed upon a rock shaft 277. Upon the other end of the shaft 277 is fixed a crank arm 278 which is connected by means of a link 279 (Fig. 12) with the arm 248. Thus when the arm 248 is released by the latch finger 249, the shaft 277 is rocked in the direction to lift the lever- 271, the block 273 preventing the dog 63 from dropping into the path of movement of the shoulder 64 on the segment 65. I

In case the machine should be automatically stopped through the action of the detec- 'tor 260 or the feel-er 263 foi` the tension-reducing means 101, it is necessary to rethread the machine. Before doing this the operator releases the arm 134 (Fig. 20) by pressing aside the arm 138, thereby causing the knotter to assume the position occupied after a tying operation. The thread is then drawn through -the machine. and the machine started by means of the belt-shifter 252. The detent finger 200 (Fig. 8) is then manually disengaged from the finger 63h, thus placing the resetting mechanism in operation to restore the knetter to normal position, index .the magazine. and bring a new reserve thread into operative relation to the knotter.

It will be understood that the machine may be stopped by the operator at any time by manually unlatching the belt shifter 252.

In Figs. 1, 4, 8, 12 and 20 the machine is shown in normal running condition. )Vhcn the bobbin that occupies the running position indicated in Fig. 31 is emptied or the thread breaks between the bobbin and the tension-reducing means, the detector iingers 214 will no longer be supported by the thread and the shaft 137 will turn under the pressure of the arm 134, thus releasing said arm, whereupon the clamp members 119 and 124 (Figs. 17 and 18) are actuated to clamp the exhausted thread and the reserve thread, and the knotter is actuated to tie said threads together. At the same time the finger 185 (Fig. 4) disengages the thread from `the thread support 175, thus permitting winding to continue while the thread is clamped by the clamp member 124. The slack required as the threads are looped around the tying bill 107 is obtained through slippage of the threads past the spring clamping tinger 119 (Fig. 17). Vhen the loops of the knot have been formed andthe threads caught in the tying bill and there sheared and clamped, the stripper 131 pullsthe loops off the tying bill, tightens said loops and strips the clamped thread-ends out of the tying bill. Just before the shaft 111 comes to rest, the cam surface 123 (Fig. 20), acting on the roller stud 122, causes the clamp l member 124 to be raised sufficiently to release the united threads. As the slack caused by the release of the united thread-ends is taken up in the winding operation, the thread straightens out and slips olf the support 165,

i tion shown in Figs. 5 and G.

passing down beside said support onto a shelf 280 and onto an inclined plate 281, said inclined plate assisting to guide the thread away from the hook 148. A guard linger 282 on the hook 148 also assists to prevent the thread from being drawn across the top of said hook and eventually guides the thread. .to a plane belon7 the hook.

When the arm 134 strikes and moves the :stop 195, the resultant turning movement of `the shaft 197 opens the air valve and withdraws the detent finger 200 from the finger 63", thus allowing` the spring 63fL to swing the dog 63 into the path of movement of the shoulder 64 on the segment 65. Upon the next upward swing of said segment, the arms and 62, the segment 174 and the cam 191 are moved, thereby turning the magazine to withdraw the exhausted bobbin from running position, swing inwardly the threadguide 42 for the exhausted bobbin, and place the bobbin which has been tied to thc exhausted thread in running position, the yarn clearerI also being opened for the reception of the running` thread. The lever 170 also is swung upwardly to place the plate 171 above the plane of the thread. The thread support 175 also is moved int-o position alongside the thread guide 181; the pinion 188 (Figs. 13 and 15) is t-urned` to reset the knotter-actuating shaft 111; and the shaft 224 (Figs. 13 and 20) is turned to place the shaft 137 in position to hold the arm 134 in place. The arm 149 also is swung forwardly to place the hook 148 in the posi- As the arm 149 finishes its forward stroke, the air valve is closed, the waste ends having previously been withdrawn through the suction tube 116. As the lever 170 completes its upward movement, the projection 286 removes the slop 23() from beside the running thread, whereupon said thread quickly springs out of the tension-reducing means 100 and into the tension-reducing means 101, and consequently into position in front of the grid fingers 212 and beneath the uplifted plate 171. When the segment swings downwardly, the plate 171 descends upon the running thread, thus forming a loop therein, the yarn clearer closes upon the running thread, the stop 280 is returned to normal serving to hold the shoulder 136 in locking position.

As the running thread springs into engagement with the tension-reducing-means 101, the thread leaves the vshelf 280, drops onto the edge 114a of the plate 114 and-thence slides into the throatways 115, '118, 128 and 130 (Fig. 17) and into place alongside the tying bill. throat'ways just mentioned before the new reserve thread is moved into said throatways by the hook 148.

The operative removes empty bobbinsfrom the magazine, replaces them with full bobbins and inserts the ends of the threads of the full bobbins in the clamps 26. The skewers are contracted as the empty bobbins are moved out of operative position, so that the empty bobbins' may be readily lifted otl and full bobbins dropped into place.

By reason of the high speed of winding, the thread balloons as it unwinds from the bobbin, thus enabling the yarn to unwind freely.

While I have described the present embodiment of the invention in considerable detail, it should be understood that the invention is not limited to such4 details, but

that on the contrary various changesmay be made in the construction and relative arrangement of the various mechanisms without-departing from the scope of the invention, as indicated by the appended claims.

l claim as my invention:

1, A winder having, in combination. a bobbin support, a thread guide above the bobbin support` tension-reducing means. a detector between the thread guide and the rllhe running thread enters the y