US1614718A - Spinning machine - Google Patents

Description

Jan 189 H. D. COLMAN Eff-AL SPINNING MACHINE Filed May 29, 1918 8.Sheets-Sheet 1 gee-556.5.'

Jam 18 1927 H. D. coLMAN 1-:r AL

SPINNING MACHINE Jan. 18,1927. 1,514,718

H. D. coLMAN 1-:1' AL SPINNING MACHINE Filed May 29, 1918 8 Sheets-Sheet 3 Jan. 18, 1927. Y

H. D. COLMAN ET AL SPINNING MACHINE Filed May 29, 1918 8 Sheets-Sheet 4 Jan. 1s, 1927.

H. D. COLMAN ET AL SPINNING MACHINE e` snapte-sheet s Filed nay 29. 191e )m2515656 gz@ up 8 Sheets-Sheet 6 SPINNING MACHINE H. D. COLMAN Er AL Filed My 29. 1918 Q- IHW 1 l l if.. .1. 5% 1, IVW" 1 l N% mml AQ U huh: mv hihi. y

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Jan. 18, 1927.

Jan. ,18, 1927.

1,614,718 H. D. coLMAN E'r AL SPINNING MACHINE Filed May 29, 1918 8 Sheen-Sheet 7 Patented J 18; 19727.

UNITED `STATES PATENT OFFICE.

HOWARD D. COLHAN AND BUBfl A. PETERSON, OF BOCXFOBD, ILLINOIS, ASSIG'NOES,` BY MESNE ASSIGNMENTS, TO BABBEB-COLMAN COMPANY, F ROCXIOBD, ILLINOIS,

A CORPORATION OF ILLINOIS.

SPINNING MACHINE.

Application med my as In order to facilitate the mechanical tind in of the free end of the yarn on a filling bo bin or a warp bobbin,- it is desirable to spin enough coils of ya'rn on the upper end of the bobbin to form a small'mass abov^ the main yarn mass, which coils of yarn may be grasped by a suitable device and stripped 0H the bobbin. These coils of yarn, of course, are connected by a strand of yarn to A the main yarn mass, and when stripped ott the bobbin they are followed by said strand, the latter constituting the found end.

One of the objects of the present invention is to provide improved mechanism for operating the spinning machine to produce a small arn mass upon the upper end of cach bob in.

Before removing the full bobbins from the spinning frame, it is customary to lspin a few coils of yarn upon the lower end of the bobbin in order that when the bobbin is dofed these coils of yarn shall slip oli onto the spindle -and afford means for attaching the yarn to the.new bobbin. The coils of yarn upon the lower end ofy the bobbin are spun after the yarn has been coiled about the upper end of the bobbin and thus the coils at the upper end of the bobbin are connected to those at the lower end of the bobbin by a strand of yarn. If the proper number of coils have been wound about the lower end of thebobbin, theyl will slip off the bobbinand the connecting strand will be broken in the dotiing operation;'but, if an excessive amount -of yarn hasl been wound about the lower end of the bobbin, some of that yarn' will remain wound about the lowerlen'd of the bobbin when the bobbin is dotted and, therefore, the strand connecting the upper coils to the lower coils will not be broken. When such a bobbin is placed in .a Weft-.repleuishing loom provided with an enfl-tinding devicefpr stripping the upper coils ofi' the bobbin, various difficulties.- may arise. If the surplus vlower coils unwind when the upper coils are strippedpo the bobbin, said surplus coils will form strand of greater or less length which trails along .with the found end; and if this strand is of excessive length it will reach into the cloth 1918. Serial No. 231,191.-

and cause a defect therein. If the strand connectin the up er and lower oils'should break in t 1e endnding opera lon, the yarn remnant on the lower portion of the bobbin Will either break the weft thread or become woven into the cloth. Or the vfound end may break inthe end-finding operation while being unwound beneath the strand connecting the upper andjlower coils.

It is necessary that the strand extending 00 from the front drawing roll to the traveler shallbe somewhat slackyin order, principally, to allow the-bobbin to be lifted until the strandA extending between the traveler and the bobbin assumes such an angle that the 05 coils on the lower end of the bobbinwill slide off. If, however, too much slack'yarn is s un, there ma'y result excessively large kinks which may catch on the` thread guide or other parts and cause breakage of the7o yarn,eor the kinks may be unable to pass through the traveler or the thread guide and thus cause breakage of the ya'r'nwhen the l machine is again started.

The method heretofore used in spinnin a dofiing coil uponv the lower end of the bob in and in obtaining the necessary slack has consisted in lowering the ring rail tothe dofting position and then stopping and restarting the machine repeatedly and in quick succesg3 sion by shifting the driving belt off and-'v onto the drive pulley. When the ring rail reached the doing position, someI yarn would be wound around the lower end of the bobbin and during the succeeding operationl of the machine more or less slack yarn would be spun. In practice, this method of spinning yarn on the lower end of a bobbin and rovidin'g slack yarn did not produce satis actory results. Inl restarting the nla- `chine the belt would sometimes be allowed to remain upon the drive pulley so longthat the 'speed of the machine would increase to the point where some or all of the slack yarn previously spun would be wound upon the lower end of the bobbin, thereby placing an excessive amount of yarn on the lower end of the bobbin and making it necessary to spin more slack yarn to take the place of that which had been unintentionally wound if bobbin and to spin the proper amount ofr slack yarn, thus also simplifying and reducing the work of stopping the machine in i l condition for doiing.

l In the accompanying drawings, Figure 1l is a fragmental side elevation of a spinning machine embodyingr the features of our ini vention. Fig. 2 is a ragmental transverse sectional view' showing, more or less diagrammatlcally, the drawing rolls, the

thread-board, the bobbin, andthe ring rail.

Fig. 3 is asectional view, upon an enlarged scale, taken in the plane of line 3-3 of Fig. 1. 'Figi 4 is a ragmental longitudinal section taken in the plane of line 4-4 of Fig. 7, showing the end of the machine opposite toI that illustrated in Fig. 1. Fig. 5

lis a detail view of a lock to hold the ring rails in dofiing position. Fig. 6 is a trans-` verse sectional view taken in the plane of line`6-6 of Fig. 4. Fig. 7 is a fragmental horizontalsection on line 7-7 of Fig. 4. Fig. 8 is a view looking from the left-hand side of Fig. 4. Fig. 9 is a fragmental plan view of the end of the machine shown in Fig. 1. Fig. 10 is aview of the yarn package produced by the machine. F ig. 11 is a detail view of one of the member comprised in the mechanism. Fig.'1.2 is a fragmental end elevation. Fig. 13 is a fragmental detail view.` Fig. 14 is a fragmental side elevation. Figs. 15 and 16 are detail views of a certain element comprised in the machine.

The crel is not illustrated in the drawings, as the invention has no particular reference thereto.

Our improvements have been shown as embodied in a ring spinning machine of ordinary construction, but it will be understood that the invention is not limited to any ,particular form of ring spinning machine.

The machine comprises spindles 1, the bases of which are mounted in the upper lianges of the ladder rails l2. 3 are the whirls on the spindles. 4 are bands extending from the drum 5 to the whirls The drum 5 is lixed upon the main shaft 6. The ring rails 7 are connected to the upper ends of lifting rods 8, the latter being slidably mounted in the ladder' rails 2. To the lower ends of the lifting rods 8 are attached shoes 9 (Fig. l) that rest upon roller studs 10 modified without de arture from the inven- -tion herein disclose A counterweight 15 (Fig. 4) attached to each of the rock shafts 12 tends to raise the ring rails; A build motion of any suitable construction cooperates with the counter- Weights to produce the upward and downward movement of the ring rails in thex normal! operation of the machine. Hereln is shown a combination warp and filling builder of well-known character. Said builder comprises a builder arm 16 (Fig. 6) pivoted at 17 to a stationary part of the framework. On the builder arm 16-is mounted a roller 18 that bears against a lling cam 19 which is splined upon a shaft 20. The shaft 2O 'is driven by means otk the change-speed gear train illustrated in Fig. 8. A. filling arm 21 is pivoted to the builder arm 16 at 22 and lies in contact with a roller stud 23 on a rack 24. Said rack is slidablyrmounted on the builder arm 16 to move toward and away from the axes 17 and 22. The rack 24 meshes with a worm 25 which is rotatably mounted in the builder arm`16, said worm being intermittently and slowly rotated in the normal operation of the spinning machine by well-known means not herein shown in detail, so as to cause the roller stud 23 to move toward the axes 17 and 22. A chain 26 connected to a hook 27 on `the'arm 21 extends over a guide sheave 28'and .thence to the adjacent arm 13 (Fig. 4). The counterweights 15 acting through the arms 13 and the chain 26 hold the roller stud 18 against the cam 19. i

In the rotation of the filling cam 19 the arms .16 and 21 are swung, thereby causing the ring rails 7 to rise and fall and thus to lay the yarn on the revolving bobbins. As the rack 24 moves toward the axis 22, the arm 21 rises with. relation to the arm 16, thereby causing the ring rails 7fto rise gradually so as to cause'the yarn masses on the bobbins to lengthen in the Well-known manner. lVhen the yarn masses a have been completed, mechanism to be now described is operated to cause the automatic performance of certain operations preparatory to the doiing of the bobbins. Theseoperations consist of the formation of a small yarn mass b on the upper end of each bobbin above the yarn mass a, the lowering of the ring rails 7 to dofing position, the windin of the correct amount of yarn on the lower end of the bobbin, the spinning of the proper amount of slack yarn, and the stoppage of the machine.

A transverse rock shaft 29 mounted in the machine framework carries aztreadle which is. held in normal osition by means of a tension spring 31. he normal position of the treadle is determined by contact of the treadle arm with the end frame of the machine. On the shaft 29 is fixed a fork 32 which engages the hub of the filling cam 19. When the yarnv masses a have been completed, the operator depresses the treadle 30, thereby movin the cam 19 out of the vertical plane of the roller 18, whereupon the counterweights 15 cause said roller1 to rise unt-i1 it stops against the hub of the cam, the

ring rails at the same time being raisedun` til they are in the plane indicated by the i dotted lines in Fig. 6.`

ratchet wheel 40 that is rotatabl To prevent the ring rails from rising so rapidly as to break the threads, we provide the following described mechanism. 33 Fig. 7) is a shaft which is slowl driven rom the shaft 6 by means of the c ain belt 34 and the gear train illustrated in Fig. 8. The shaft 33 is connected by means of bevel gears 35 to a shaft 36 to w ich is secured a` disk 37 carrying a dog 38. A tension spring 39 holds the dog 38 in engagement with a mounted v on the shaft 36.A Rigid with t e ratchet wheel 40 isa pinion 41 that meshes with a segment 42 carried by an arm 43 which is fixed on the adjacent'shaft 12. The shaft 36 is driven in the direction indicated by the arrow in Fig. y'7. It will be seen that when the filling cam 19 is moved oi the roller 18, the action of the counterweights 15in raising the ring rails will be restrained by the dog 38. The counterweights cause the segment 42 to turn the' ratchet wheel 40 until a tooth thereof stops against the dog 38 and thereafter the ratchet wheel turns at the same rate as the shaft 36.

It may be here stated that the normal operation of the build motion is not intel"- vfered with by the dog 38, the travel of said dog being suiciently rapid so that it does not restrain the rotation of the ratchet wheel 40 when the ring rails rise in the normal building operation. p

The ring rails having been raised by the counterweights 15 until they reach the plane indicated by the dotted lines in Fig. 6, the continuing operation of the machine causes yarn b to be wound around the upper end ofthe bobbins above the yarn mass a, the yarn mass b being connected tothe yarn Y mass-a, by a'strand 0 (Fig- 10l- The depression of the treadle 30 in operation mechanism which lowers the ring rails to doing position as soon as sucient yarn b has been wound upon the .upper ends of the bobbins. This mechanism comprises a windin drum 44 rotatably mounted upon the s aft 33. A cable 45 is fixed at one end to the Winding drum 44, the other end of the cable being attached is a fork fixed upon the rock shaft 29 and l engaging the hub of the clutch member 48. Depress1on of the treadle 30 causes the winding drum 44 to revolve with the shaft 33, thereby causing the cable 45 to be partially wound up on said drum. By the time suflicient yarn b has been wound on the bobbins, a collar 45 on the cable 45 has come into contact with the arm 47, whereupon the continuing movement of the cable causes the shafts -12 to turn in the direction to lower the ring rails to a point slightly below the lower limit of the normal traverse. Such movement of the shafts 12 also allows the builder arm 16 and the filling arm 21 to descend somewhat below their normal position and hence out of the way of the cam 19 when the latter is subsequently slid into normal position by the 'spring 31. In the descent of the ring rails, av

strand d is wound around the yarn mass a. The descent of the ring rails is limited in any usual or suitable Way, as by means of a lug 14 (Fig. 4) located on the rod 14 in y position to stop vagainst .a portion 51 of the framework of the machine. When the ring rails reach their lower limit of movement, they are automatically locked in such position by suitable means, as, for example, thatI shown in Figs. 4 and 5. 14" is a collar fixed to the rod 14. 14c is a latch pivoted to a suitable part of the machine frame in position to drop behind the collar 14" when the ring rails reach lthe doing position. One

side of the collar is tapered to push the latch 14 aside as the ring rails approach the lower limit of their movement. When in lockin position lthelatch is supported against t e pressure of the collar by a bracket 14". The latch may be manually wihdrawn by `suitable means such as a ro 14.V

After the ring rails have been llooked indoling position, the operator releases the lll) treadle, the spring 45* restoring the winding drum 44 andcollar 45" to normal position. Any rotation ofthe shaft 33 which may occur after the lug 14 strikes the stop l'merely causesl the clutch member 48 to slip past the clutch face 49 on the winding drum, the clutch teeth being suiciently inclmed tcallow such slippage.

As the ring rails reach theiimit of their downward movement, means is actuated to .throw in a low-speed drive for the machine.

There is a stud 52 (Fig. 3) fixed to one of the arms 11 at the drive end of the machine, said stud having an' opening through which a rod 53 extends freely. A54 is a nut on the rod 53 belowy the stud 52. The upper end` `of the rod 53 is pivoted to a latch 55 which gagement with the lever 58. 60 is a tension springv connected to the lever 58 and normally restrained by the latch 55. The other varm kof the lever 58 bears against a lstop f collar 61 on a slidable belt shifter rod 62.

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The loop 63 of the belt shifter engages a drive belt 64. Said belt is arranged to run upon a tight pulley 65 and a loose pulley 66 mounted upon the shaft 6. Back gearing is provided for communicating power from the belt 64 when the latter is on the loose pulley, to the tight pulley 65. Said back gearing is thrown into operation by means including a lever 67, the larm 68 of which is engagedv bythe forked end of the lever 58. The arm 69 of the lever 67 engages the forked arm 70 of a lever (7)1. The arm 72 of the lever 71 is connected by means 'of a link 73 to an arm 74 which is pivotally mounted upon a sleeve 75 (Fig. 9), said sleeve being fixed in bracket por. tions 76 and 77 provided in the machine framework., Pivotally mounted upon the sleeve 75 is a bracket (Fig. 9) that'rotatably supports a shaft "79. On said shaft is fixed a wheel .80 adapted to engage `the drive belt 64 when said belt is running upon the lloose pulleyA 66. Rigid with the shaft 79 is a pinion-81that meshes with a spur gear wheel 82 which lis fixed upon a shaft 83 that is rotatably mounted in the sleeve 75. Upon the other end of the shaft 83 is a pinion 84` that meshes with a spur gear wheel 85 which is rotatably mounted upon\ a shaft .86' carried by a bracket 87. The bracket 87 'is pivotally mounted upon the sleeve 75. l Upon the shaft 86 is fixed a disk 88 having a slot-89 (Fig. 13) into which extends a pin 90 set in the spur gear wheel 85. To the shaft 86 is fixed a wheel 91, the periphery of which 'is covered with leather or other Isuitable friction material. The friction wheel 91 is arranged to engage the periphery of the tight pulley 65 when the wheel 80 engages the drive belt 64.' Rigid with the brackets 78 and 87 are upst-anding'arms 92 arid 93, respectively, which are engaged by the opposite ends of a level.'

v94, said lever being pivoted upon anarm 95 which is pivoted on the sleeve 75. Rigid with the arm 95 is anI arm 96 that normally stands against a stop 97. On the arm 96 is pivoted a dog 98. (Fig. 12) that normally bears against the offset portion 99 (Fig. 16) of an arm 100 which is rigid with the arm 74. 101 is a stop on the arm 100 to limit downward movement of the dog underjthe action of the spring 102.

Normally the weight of the brackets 78 and 87 and the parts carried thereby holds the arm 96 against the stop-97, the dog 98 being in contact with the portion 99 of the arm 100. When the latch is disengaged from the lever 58, the spring moves the armlOO in the direction to press the wheels 80 and 91 against the drive belt 64 and the tight pulley 65, respectively. At first the momentum of the machine tends to drive the wheel 91 and the disk 88, the disk exerting its force against the pin 90. Slippage thereupon occurs between the tight pulley and the wheel 91, or between the drive belt 64 and the wheel 80. orbetween both of the wheels 80 and 91 and their respective contacting elements, until the rotation ofthe shaft 6 due to the momentum of the machine h as been checked. The back gearing thus acts as a braketo slow down the machine promptly to the Speed determined by said back gearing.

Upon the stoppage of the ring railsin their lowest position, a few'coils of yarn e are wound upon the lower ends of the bobbins.A To distinguish the coils e from the yarn `mass a, the former are indicated by heavy lines in Fig. 10. By the time suilicient -yarn e has been wound, the speed of the machine will have been reduced to the speedfdetermined by the back gearing, which is preferably just below that at which the yarn balloons; i. e., the low speed is such that the strand of yarn f (FigT 2) running from the drawing rolls to the traveler g on the spinning ring la, does not balloon, but, on the contrary, comes into contact with the yarn on the bobbin. By reason of such contact, said strand and the traveler are carried around with the bobbin, and consequently the yarn produced` by the drawing rolls during the slow operation of the spinning machine is not wound on the bobbin, but instead accumulates as slack between the drawing rolls and the traveler. Thestrand f kinks at-one or more points, as indicatedat c in Fig. 2. l

Means is provided for disengaging the dog 98 from@ the portion 99 of the arm 100, when the predetermined amount of slack yarn hasbeen spun. This meanscomprises a pawl103 (Fig. 13). pivotally mounted on the disk 88 and having afinger 104 which is held in contact with the pin 90 by a spring 105. When the pin 90 movesinto contact een with the leading end wall ofthe slot 89,` the pawl 103 is swung into positiontoengage a 87. On one end of the shaft. 107 is a crank` en W ratchet wheel 106 fixed upon a shaft 107 which is r'otatably supported in the bracket arm 108 carrying a pin 109 which is arranged to engage an extension 110 of the dog 98. A torsion spring 111 normally holds the pin 109 against the lower side of the extension 110. 112 is a detent or locking pawl which is pivoted on the bracket 87 in sition to engage the ratchet wheel 106. gaid detent is normally held away from the ratchet wheel by a stop 113 on the frame aging an extension 114 of the detent. en the bracket 87 is moved by the spring 60, the detent 112 is placed in contact with the ratchet wheel by a tension spring 115 connected at one end to the ,extension 114 and at its other end to a post 116 on the bracket 87. The pawl 103 being moved into effective position by the pin 90 when the braking function of the low-speed drive has been fulfilled, it will be Aseen that the movement of the throw-out pin 109 begins approximately simultaneously with the production of slack yarn, and hence the amount of slack yarn is not affected by variations in the amount of slippage between the brake elements.

The operation is as follows: When the bobbins are to be doed, the operator depresses the treadle 30 whereupon the rails are raised above the normal traverse. After a small yarn mass b has been spun on the upper end of each bobbin for engagement by` an end-finding device (not shown), the ring A rails are automatically lowered to a plane below the normal traverse.` As the ring rails approach said plane the projection 52 (Fig. 3.), acting through the rod 53, disengages the latch from the lever 58, whereupon the spring 60 shifts the drive belt 64 from the tight pulley to the loose pulley 66. and swingsthe brackets 78 and 87 into position to press the ;wheel.80 against the drive belt and the wheel 91 against the tight pulley 65. Power is thereby, transmitted from the belt 64, through the -yvheel 80, shaft 79, gears 81 and 82, shaftB/, gears 84 and 85, pin 90,disk 88, shaft' 86 and wheel 91 to the wheel 65, the wheel 91 acting first as a brake and thereafter vdriving the machine at low speed. Before lthe speed has been fully reduced, suiiicient ar'n e will have been wound upon the lower'v-"ends ofthe bobbins, the ensuing low-speed operation of the machine causing the production of a slack yarn. When reversal of torque occurs. the pin 90 moves into engagement with the leading end wall of the slot 89, thereby swinging the pawl 103 into position to engage the ratchet wheel 106. As the gear wheel 85 and the disk 8'8 revolve, the pawl 103 turns the ratchet wheel step by step, thus swinging the crank pin 109 until finally it strikes the upper side of the extension 110 and rocks the dog 98 out of contact with the portion 99 of the arm 100. Gravity thereupon causes the brackets 78 and 87 to swing downwardly until the bracket. 87 strikes the stop 97, the end of the dog 98 voverlying the portion 99. In such downward movement ot' the brackets, the extension 114 strikes the stop 113 and withdraws the detent 112 from the ratchet wheel 106, whereupon the torsion spring 111 restores the crank pin 109 to contact with the lower side of the extension 110. The throw-out - mechanism 103, 106, 108 is arranged to stop the machine as soon as the proper amount of slack yarn has been spun. In the ensuing do'ing o eration, all or most of the yarn e will slip o the bobbin.

Hence, when the coils b are stripped from vsmall yarn mass for end-finding purposes and then lowered for the winding of a few turns of yarn for dofiing purposes on the lower endvof the bobbin, and for the spinlning of a little slack yarn, after which the machine stops.' The descent of the ring rails from the end-finder-coil spinning position to the doing position is effected at such speed that the shortest practicable strand is produced between the end-finder coil and the doiing coil.

When the machine is ready to be again set in motion, the operator shifts the belt 64 to the tight pulley by. means of the usual hand lever (not shown), the lever 58 being thereby moved into the position shown in Fig. 9, where it is retainedby the latch 55. Such movement of the lever 58 raises the arm 100 far enough to allow the do 98 to spring down behind the portion 99,4 ne dog being supported behind said portion by the lug 101.l

The invention is not limited to the construction and arrangement herein disclosed, as various modifications and reorganizations may be effected without departing from the yspirit and sco e of the invention as defined Ain the appen ed claims.

communicating power from the first mentioned wheel to the other, mechanism for placing said wheels in contact with said belt and tight pulley, a spring for actuating said mechanism and said belt shifter, a det-ent for the spring, and means actuated by the ring rail for withdrawing the detent.

2. A spinning machine having, in combination, a spinning element, a drive shaft, a tight pulley and a loose pulley on said shaft, a drive belt arranged to run on said pulleys, a shifter for the belt, reduction gearing arranged to coact with the belt and the tight pulley, mechanism for operatingr said reduction gearing, a spring for actuating said mechanism and said belt shifter, a detent for the spring, and means actuated by said spinning element for withdrawing the detent.y

3. A spinning machine having, in combination, spindles, a shaft and connections for rotating the spindles at normal speed, a ring rail arranged to be lowered for the spinning of yarn upon the lower ends of the bobbins, and means controlled by the lowering of the ring rail for driving said shaft at a lower speed for a predetermined length of time.

4. A spinning machine having, in com1I bination, spindles, a shaft and connections for rotating the spindles at normal speed, a ring rail arranged to be lowered for the spinning of yarn upon the lower ends of the bobbins, and means automatically thrown into operation in such lowering of the ring rail for driving said shaft at a lower speed for a predetermined length of ime.

5. A ring spinning machine having, in combination, a ring rail; a builder motion comprising means tending to raise the ring rail, a builder arm, a cam for movingthe builder'arm, a filling arm movably connected to the builder arm, and a connection between the filling arm and the ring rail; and power-driven means independent of the builder motion for lowering the ring rail to dofing position.

6. A spinning machine having, in combination, spindles, a shaft and connections for rotating the spindles at normal s ed, a ring'rail arranged to be lowered or the spinning of yarn upon the lower ends of the bobbins, and 'means controlled by the rin rail for drivng said shaft at a lower Spee 7. A spinning machine having, in combiy nation, a high speed drive, a low speed drive,

a ring rail arranged to descend below the normal traverse, means controlled by abnor-v mal descent of the ring rail for replacing the high speed drive with the low speed drive,

and means for throwing out the low speed drive after a predetermined'length oftime. 8. A ring spinning machine having, in

combination, a ring rail; a builder motion comprising means tending to raise the ring rail, a bullder arm, a cam for movlng the builder arm, a filling arm movably connectconnected to said drum and adapted'to act` upon the ring rail'L to lower the latter to doffing position.

9. A spinning machine having, in combination, a ring rail, a winding drum, a cable connected at one end to the winding drum, a spring connected to the other end of the cable for moving the cable in opposition to the winding drum, operating connections betweenthe cable and the ring rail, and means for rotating the winding drum vto lower the ring rail-to doliing position.

10. A spinning machine having, in combination, a ring rail, a winding drum, a flexible connection between the winding drum and the rail, a drive shaft, and means driven from said shaft for rotating the winding drum to lower the ring rail to doiing position. Y

` 11. A spinning machine having, in combination, a ring rail, a builder motion for trav- .,ersing`the ring rail, said rail tending to ranged to be placed in action by abnormal` descent of the ring rail, and means for throwing out said drive afterl a predetermined length of time.

13. A spinning machine having, in combination, a ring rail arranged to travel beyond the normal traverse, a low speed drive arranged to be placed in action by abnormal travel of the ring rail, and means for throwing out said drive after a predetermined length of time. Y j

14. A spinning machine having, in combination, a ring rail arranged to descend below the normal traverse, a drive controlled by abnormal descent .of the rin rail, and means for throwing out said drive after a predetermined length of time.I A

15. A spinning` machine having, in combination, a ring rail arranged to descend below the normal traverse, and a low speed drive controlled by abnormal descent of the ring rail.

16. A spinning machine having, in combination, a ring rail arranged to travel beyond the normal traverse, and a low s eed drive controlled by abnormal travel o the ring rail.

Dfi

l Uil lli 17. A spinning machine having, in combination, a ring rail arranged to descend below the normal traverse, and a drive for the machine controlled by abnormal descent of the ring rail.

18. A spinning machine having, in combination, a ring rail arranged to travel beyond the normal traverse, and a drive for the machine controlled vby abnormal travel said normal traverse, and a low speed drivemechanism for imparting a predetermined amount of rotation to the spindle'while the I ring is in such abnormal position.

20. A spinningr machine having, in combination, a drawing roll, a bobbin spindle, a. spinning ring, a traveler on the ring, means for driving the drawing roll and the Y.. spindle at winding speed, and means acting after the formation of the`mai'n yarn mass upon the bobbin to drive the drawing roll and the spindle at such reduced speed that ballooning of the yarn between the roll and the traveler does not occur.

21.'A spinning machine having, in combination,-a drawing roll, a bobbin spindle,-

a spinning ring, a traveler on the ring, and means for driving thevdrawing roll and the spindle after the 'formation of the main yarn mass thereon for a predetermined length of time at subnormal speed so that ballooning ofthe yarn between the roll and the traveler does not occur.

22. A spinning machine having, in combination, spinning elements, means to drive the spinning elements at winding speed, and means to brake the spinning elements, and thereafter drive them at less than'winding speed. l

23. A spinning machine having, in combination, spinning elements, means to drive the spinning elements at winding speed, and means acting automatically after the formation of the main yarn .mass to ldriveA the spinning elements at less than winding speed for a predetermined length of time to produce slack yarn.

24. A spinning machine having, in combination, a rotary spindle for a bobbin, a spinning ring,- means to raise the ring into position to spin an end-finder coil on the upper end .of the bobbin, means to lower the ring into position to spin a doiing coil on the lower end of the bobbin, means to lock .the ring in the last mentioned position, and

means to drive the spindle at sub-ballooning speed.

25. A spinning machine having, in combination, a rotary spindle for a bobbin, a

spinning ring, means for raising the ring into position to spin an end-finder coil on the an end-finder coil on the upper endof the bobbin, means automatically actuated to lower the ring from such elevated position jto a position for spinning a few turns of yarn on the lower end of the bobbin, means to lock the ring in the last mentioned position, and means controlled by the lowering means for driving the spindle at sub-ballooning speed for a predetermined length of time.

27. A spinning machine having,- in combination, a ring ra'il, a builder arm operativelyconnected to the rail, a'laterally slidable cam, means for holding the arm against the cam, a sha-ft, a winding drum rotatively mounted on the shaft, a flexible connection between-the Winding drum and the rail, a clutch element on the shaft arranged to engage the winding drum, a'rock shaft, forks on therock shaft for slidingvsaid cam and clutch member,- manipulative means for turning the rock shaft in one direction, and means for turning the rock shaft in the opposite direction.

28. A spinning machine having, in combination, a ring rail, a: builder arm operatively connected to the rail, a' laterally slidable cam,means for .holding the arm against the ca'm, a winding drum, a -iiexible connection between the winding drum and the rail, means for rotating the drum including a clutch member, and manipulative means for -sliding said cam and clutch member.

29. A spinning machine having, in combination, a ring rail, a builder arm operative-v in one direction, and means for turning the rock shaft in the opposite direction. l

30. A spinning machine having, in combination, af ring rail, a builder motion for eecting a normal traverse of the ring rail, and means for effecting an abnormal traverse of the ring rail including a rota'ry shaft,

1 nected to the'winding drum and operatively connected to the ring rail, and means for connecting and disconnecting the winding drum and said rotating shaft.

32. A -spinning machine having, in combination, a ring rail, a rock vshaft operatively connected to the rin rail, a counterweight tending to` turn the s aft in the direction to raise the ring rail, -a gear segment onthe rock shaft, a pinion meshing with the segment, a wheel rotatable on the axis of the pinion, a. pawl carried by said wheel, a ratchet wheel connected to the pinion and engaged by said pawl, and means for rotating the pawl-carrying Wheel backwardly with reference to the ratchet Wheel.

33. A spinning machine having, in combination, a ring rail, means tending to raise the ring rail, a ratchet wheelgeared to the raising means, a wheel rotatable on the axis of the ratchet wheel, a pawl carried by the second mentioned wheel and engaging the ratchet wheel, and means for rotating the pawl-carrying wheel backwardly with ,reference to the ratchet wheel.

34,-A spinning machine having, in combination, a ring rail, a builder arm operatively connected to therail, a cam, means for holding the arm against the cam, means' for causing relative disengaging movement between the arm and the cam, and means for restraining the resultant rise of the rail, but permitting a slow upward movement thereof.

35. A spinning machine having, in combination, a ring rail, a builder arm operatively connected to the rail, a cam', means for holdin the arm against the cam, means for lateral y moving the cam'out of operative relation to the arm, vand means for re,- straining the resultant rise of the rail but permitting a slow upward movement thereof.

36. A spinning machine having, in combination, a ring rail, a builder motion operai tively 'connected to the rail and including;

means tending to raise the rail, means for operating the builder motion to release the raising means to action, and vmeans vfor restraining the resultantrise of the rail but permitting a slow upward movement thereof.

37. A spinning machine having, in combination, a ring rail tending to rise, a builder motion for traversing the ring rail, and power 'means under the4 control of the operator for lowering the ring rail below thc normal traverse.

38. A spinning machinehaving, in combination, a ring rail, a vbuilder arm operatively connected to the rail, a cam, means for holding the arm against the cam, and means for laterally moving the cam out of operative relation t0 the arm whereby the latter is permitted to rise.

39. A spinning machine having, in combination, a ring rail, a builder arm operatively connected to the rail, acam, lmeans for holding the arm against the cam, and means for causing 'relative disengaging movement between the arm and the cani whereby the arm is permitted to rise.

40. A spinning machine4 having, in combination, a ring rail, afbuilder motion comprising a counterweight and a cam, a lowering means for the rail, and means for disabling the cam to permit the counterweight Atocraise the rail, and for subsequently placing the owering means in action.

41. A spinning machine having, in combination, a ring rail, a winding drum, a cable connected at one end to the winding drum, means connected to the other end of the cable for moving the cable in opposition to the winding drum, a member operatively connected to the ring rail, said cable being movable longitudinally relative to said member, a device on the cable adapted to engage said member to move the ring rail to doffing position, and means for rotating the winding drum.I

42. A spinning machine having, in combination, spinning elements, means to drive` the spinning elements at Winding speed to form the main yarn mass and a doliing coil, and means acting automatically after the formation of the doiiing coil to drive the spinning elements at less than winding speed for a predetermined length of time to produce slack yarn.

43. A spinning machine having, in combination, spinning elements, and means for automatically driving the spinning elements at less than windingpspeed for a predetermined length of time to produce slack yarn.

In testimony whereof we have hereunto set our hands. Y

HOWARD D. COLMAN. BURT A. PETERSON.

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