US1207138A - Warping apparatus. - Google Patents

Description

H. D. COLMAN.

WARPING APPARATUS. APPLlc/Tlon mso MAY lo. |915.

1,207,138. Patented Dec. 5,1916.

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APPLICATION FILED MAY l0, i915.

Patented Deo. 5, 12H6.

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. COLMAN WARPING APPARATUS. APPLICATlON FILED MAY l0, |A9vl5-V H. n. G0L-MAN@ WARPING APPARATUS.

APPLICATION FILED MAY I0. |9L5.

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WARPING APPARATUS.

.APPLICTION FILED MAY l0, |915- Pawnted' Dee. 5,1916."

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WARPING APPARATUS.l

APPLICATION PILED MAY 1.0. lsls.

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H. D. COLMAN. WARHNG APPARATUS. APPLICATION'FILED MAY 10,-!9l5.

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-.-1- lli--- illustrating the brakeopera'ting mechanism, the brakes having been restored' to initial or inoperative position, and the apparatus being at rest. showing the parts in process of being restored to initial position. Fig. i3 isa view from the side opposite to that seen 1n Fie.

11. Fig. le illustrates the means for locking the brakes in initial position. Fig. l5 shows a means for preventing the Warper from be'- ing operated until the brakes have been re- "stored to initial position. Fig. 16 illustrates Suitable means (not herein shown) may be employed to prevent the formation of an eccentric yarn mass on the beam. l) are the drop Wires for detecting thread breakages, and F the usual slack-take-up roll res ,ing upon the sheet of Warp threads. As herein before suggested, the threads are kept taut at all times by the co-action of the cheese brakes and the beam brake and Without the assistance of the iall roll llhthe latter being retained in the Warper for the purpose of preventing slack in case of va sudden accidental decrease in the speed of the beam, ior the purpose of indicating to the operative when the beam brake requires adjustment, and to prevent slack when the beam comes to rest after having been revolved slowly preparatory to going onto higher speed.

'.W'hile the invention in its broadest aspect is applicable to the unvvinding ol" various forms of .yarn masses, it is herein illustra-ted as embodied in a machine for un- Winding yarn masses in the form oli cylindrical cheeses .'z. Each cheese consists of yarn cross-Wound upon a cheese tube la). ln the illustrative forni herein shown, the cheese tube consists of two cylindrical sheet-metal sections t1 and t2 rigidly secured together, each of said sections having an annular' end Wall 253. ln each of the 4end Walls hais a central opening surrounded by an inturned flange et. A sleeve t5 extends centrally of and Within the sections 51 and 62 and surrounds the flanges In the Creel the cheeses are rotatably supported upon spindles l, four cheeses, in the present embodiment being carried by each spindle. The cheese tubesare not mounted directly upon the sl'iindle, but are carried-by rollers 2 Which arei'otatably supported upon the spindle. ln the construction herein shown, each roller is formed of sheet metal `and comprises annular hearing anges 2a Fig. l2 is a ragniental vieWf nannies supporting the bearingfianges b* of .the

cheese tubes. By reason of such reduction 1n diameter the roller has a generally crowning Aforni which prevents the cheese from 4moving laterally .into contact with the ad3acent 'cheeses Whenrevolving in' the creel.

The greatest diameter ofthe roller 2 is sutil l'cie'ntly less than the smallest internal diameter of the cheese tube so-that the latter'may be' readily slipped on and ofthe roller :by the operative. a

The rollers are prevented from being displaced' endWise by means of sleeves il Which.- arerotatably mounted uponthe spinv dle l between the rollers. The ends of 4the rollers are' countersunk so as to overhang the sleeves 3, and sleeves are provided near their 'y ends with annular flanges which prevent yarn from getting between the ends of the rollers 2 and sleeves 3. case some yarn should become Wound around one of the sleeves 3, the yarn may be readily'unwound therefrom, as the sleeve 'will rotate freely as the yarn is Withdrawn.

To lubricate the spindles 1, a small quantity of oil n? is placed in each roller 2 before theA roller is placed upon the spindle in the operation of assembling the` parts. The quantity of oil is preferably so small that the level of the oil never touches the spindle Whether the spindle is `in horizontal or vertical position. When the spindle is in the creel andthe rollers .2 are revolving, seme of the oil is carried up onto the outer surface of the 'flanges 2. When the spindle lib lis subsequently' placed in vertical position,

some of the oil onV said iianges flows onto the spindle.

In the construction herein illustrated, the spindles l are arranged in groups of three, each group, being 'fixed to a base 4: (Figs. la and 8). Upon the end of each spindle is mounted a cap Spacer sleeves 3 are provided to space the rollers from the cap andthe base. Each base l with its row of spindles l will hereinal*l er be termed a trident. The tridents are adapted to be used at the Winder as a receptacle or a support tor the cheeses When the latter are removed Jfrom the Winder. lhen in use at the Winder, the tridents rest upon the bases 4 with the spindles l in upright position. When in such 4position the cheese tubes on a given spindle rest upon one another. `When the tridents are in use in the creel, the spindles occupy a horizontal position, the cheese tubesv being out lof contact with each other.

The framework of the creel may be of any suitable character. As vherein shown, it consists of tvvo upright frames 6' and 7 (Fig. 3) which areadjacent each' other at vided with thread posed .of six bays, each adapted to support` three tridents arranged one above the other. lThe tridents are insertible and removable through the outer sides of the frames 6 and.

7. At'the'left-hand side of' each bay are sockets 8 (Figs. 3, 5 and 8), each intended to 4receive one end of the base 4f of a trident, At the front end of each socket 8 is a projection 9 on which the operative may momentarily rest the base of the trident while placing the trident in the Creel-frame.-

At the right-hand side of the bay are sockets 10 (Figs. 1 and -5) to receive the caps 5. For each socket 10 there is a guide iange 11 to assist the operative in setting the triflent in place. Each bay is provided on its outer side with a gate l2 hinged at 13. (See Figs. 3, 8 and 10.) The gate is held shut by means of a projection 14 (Fig. 10) on the gate adapted to lie inl a recess 15 on a locking member 16 fixed to the creelframe. Each gate is provided with guide rods 17 for guiding the threads from the cheeses to thewarper.

The mounting of a pluralityof cheeses upon each spindle conduces to a very compact arrangement of the cheeses in the Creel,

-as will be apparent from Fig. 2.

The Winder operatives place the cheeses vupon the tridents in such a manner that when the tridents are set in' thecreel-frame the yarn shall unwind. from the upper portions of the cheeses. As the tridents may be set in the Creel-frame with either end up. the warner tender can place the tridents without giving any attention to the matter of seeing that the yarn unwinds from the upper part of the cheeses. After placing the tridents inthe creelframe, the warper tender spaces the cheeses properly upon the spindles, so that each cheese rests upon its roller 2. f

It will be seen that the creel comprising as. it does tridents each of which is supplied' with twelve cheeses at the Winder, mavbe filled and emptied verygquicklv, and with a minimuprof handling of the cheeses.

To keep the'yarn from some of the lower c cheeses out of contact with the next higher cheeses, certain of the guide rods 17 are pro- Referring now to the cheese brakes: At any given stop each cheese coasts about the same amount-as all the other cheeses, because the cheeses are all approximately the same size, and because of the character of the braking surfaces. One of these surfacesis the surface of the yarn mass and the other guiding notches 18 is a polished metal plate. The rubbing of the yarn against the plate in stopping keeps the plate bright so that the surface condi'- tion of the plate-remains very nearly constant. As stated, the other braking surface is the yarn, and as a new surface 4is constantly being resented to the brake (owing to the unwinding of the yarn) there is no change in the characteristics of this surface due to wear, and other changes due to such causes as temperature and humidity affect all o'f the cheeses-alike. l

l19 indicates the polished metal plate comprised in each cheese brake. The plate is .preferably curved so as to present a convex surface to the yarn mass and is arranged to bear against the middle of the periphery of the cheese in order that when the plate is pressed against the cheese the latter shall not be tilted so as to bring its tube b into contact with an adjacent' tube. l

vThe brake plates 19 are pivotally mounted upon rock shafts'20 which are supported upon the inner side of the-creel-frame.

21 are individual torsion springsfor the brake plates, one end of each spring'being secured'to the rock shaft andthe other end to the brake plate. The springs 21 normally hold the brake plates 194 in contact with stop arms 22 fixed to the shafts 20, each arm having two lugs that overlie the adjacent brake plates. When the cheeses are to be braked, all of the shafts 20 are turned (by means to be later described) to swing the brake plates 19 against the cheeses. The rock shafts 20 are connected together for simultaneous movement by means of crank arms 23 and vertical connecting rods 2 4 (Figs. 3 and 8).-

In the upper portion of the creel is supported a horizontal rock shaft 25 having arms 26 fixed upon its ends. These arms are connected to two of the crank arms 23 by means of links 27 (Figs. 8 and 13). A tension spring 28 anchored at one ,end4 to the creel framework and connected at itsr 28 is prevented from acting until the warper stop motion operates by means to be now described. Fixed upon the rock shaft'25v is an arm 30, on the upper end of which is pivoted a dog 31 (Fig. 14). 32 and 33 are stops to limit the pivotal movementof the dogp The dog normally .bears against A A a stop 34 which is rotatably mounted in the .supporting framework. The rdog ,bears against the stop at a point below the axis of rotation of the stop and thus tends to turn the stop. The stop is normally pre- "vented fromI turning 'by means 7of an arm' 35 rigidly connected to the stop, one end of which arm bears against a latch 36 ,pivoted l helt. upon the-pulley 63, whereby the wheel 61 is set in motion. j

As the wheel 6i raises the arm 30, the cam 70 is withdrawn lfrom the projection 71 on the arm 69. In order to prevent the spring 68 from shifting the belt 65 to the loose pulley 64 until the wheel 61 has completed its work of raising the arm 30, I provide a lock for the belt shifter, which lckconsists of a latch 72 (Fig. 12|) which is pivoted at 73 to the-supportmg framework, said latch having a shoulder arranged' to engage an arm 74 that is rigid with the shifter fork 66 and the arm 69. When the shifterfork 66 is moved to place the belt upon the tight pulley, the shoulder on the latch 7 2 drops behind the. arm 74 and thus locks the belt shifter. The means for disengaging the latch 72 from the arm 74 comprises two dianietrieally opposite cams 75 on the wheel 61 (see Fig. 12). After one of the roller studs 62 has raised the arm 30, one of the cams 75 comes into engagement with the projection 76 on the latch 7 2 and lifts said latch clear of the arm 74, whereupon the spring 68 shifts the belt' to the loose pulley. I' To prevent the wheel 61 from revolving beyond its proper initial position through momentum after the belt 65 has been-shifted to the loose pulley, I provide a brake com- .prising a brake shoe 77 carried by an arm 78, said arm being piveted on the airis of the wheel 61. The brake shoe 77 is arranged to engage the periphery of the tight pulley 63. l

The braling pressure. is furnished by a spring 7 9 which acts upon an arm 8O that is rigid with the arm 78. When the drive belt is beingshifted tothe tight pulley 63,

the brake shoe 77 lis removed from said pulley by means ofl a projection 81 on lthe vshifter fork,..said projection engaging and moving the arm 80. When the shifter fork places the belt upon .the loose pulley, the

^ .projection 81 is removed vfrom the arm 80,

whereupon the spring 79 presses the brake shoe 77 against the pulley 63 and stops the rotation of the Wheel 61. After the warper stop motion has operated to stop the warper, the operative finds the thread-end on thev beam and pieces up the thread. To facilitate the nding of the'end on the beam, the operative may set the beam in slow rotation by depressing the treadle T part way. After pieeing up the thread, the operative depresses the treadle part way to start the beam slowly and then depresses the treadle fully to throw in the high speed. To prevent any depression of the treadle until the operation of restoring the brake mechanism to its normal position hasbeen completed, I.l

provide a locking member 82 (Fig. 13), said locking member being pivotally supportedrat 83 and being arranged to dropv .by gravity into alinement with the bar 40 and thereby prevent movement of said bar and hence of the treadle T. Rigid with the locking member 82 is an arm 84 which eX- tends into contact with the arm 74. When the belt shifter 66 places the belt 65 0nthe tight pulley 63, the locking member .82 swings by gravity into locking position. When the belt shifter moves the drive belt to the loose pulley 64, the arm 74 operating the driving power and allowed to come to rest by taking the foot off the treadle. Vhen the beam is thus stopped, the brakes are vnet automatically applied, as the movement of the bar 40 (Fig. 13) in setting the beam in slow rotation does Vnot cause the shoulder 42 to drop into the horizontal plane of the lug 43.

If desired, the creel may be provided with means for supporting a number of extra cheeses, the yarn from which may'be substituted for the yarn from any of the other cheeses. Herein I have shown on .each 'reel frame a stand 85 (Fig. 2), each stand having two spindles 86 which are generallysimilar to the spindles of the tridents. For each of the extra cheeses there is a brake 19, the brakes on each stand being operated from, the adjacent shaft 2O through a contherefore such extra strands may run to any space in the comb on the warper.

As hereinbefore stated, each cheese coasts about the same amount as all the other cheeses at any given stop, the differences in coasting'bein due to slight differences in the size of the c eeses, as well as in the spring pressure of the brakes and in the friction in the bearings of the various shafts 20. On account of these varying factors it is impossible, with high winding speeds, to make the cheese brakes and the beam brake effective at the same-instant. p If it were attempted to make the cheese brakes and the beam brake simultaneously effective', the threads of many of the cheeses would be so slack as to cause trouble. beam brake somewhat lessl effective in preventing coasting than the cheese brakes', thereby causing the .threads as a. rule to be I, therefore, make the brake-controlling lever, thread-controlled means :t'or holding said lever in brake-released position, said lever tending?,` to move into brake-applied position,.means for moving said lever into brake-released position, a starting and stopping device controlling said lever-moving means, and means connected to move with the lever for actuating te the starting and stoppingf device.

A creci-braking mechanism having la brake-controlling lever, thread-controlled means for holding said lever in brake-re leased position, said lever tending to move into brake-applied position, means for moving" said lever into brake-releasedV position,

a starting and stopping; device controlling said lever-moving means, means connected to move With the lever for actuating the 3o startingr and stopping; device, and means :tor locking' the starting' and'stopping device in starting position.

8. A creci-braking mechanism having" a brake-controlling lever, thread-controlled means for holding' said lever in brake-released position, said lever tending to move into bialre-applied position, means for mov .ing said lever into bralereleased position, a starting and stoppin@ device controlling i0 said lever-moving means, means connected to move with the lever for' actuatingthe starting' and stopping device, means for locking the starting and stopping device in starting position, and means moving with the lever-moving means for operatingthe lock to release the startingr and stopping means.

e. ln a creel-brakingr apparatus, a brakecontrolling lever having an applied and 59 a released position, thread-controlled means for holding said lever in released position, said lever tending; to move into :ip-- plied position, power means tor moving said lever 'into released position, and means connected to the said thread-controlled means for throwing the power means into opera tion.

5. In a Creel-brakinga apparatus, a brakecontrolling leverv .having a brake-applied 6G and a brake-released position, thread-controlled means for holding said lever in brake-released position, saidlever tending to move into brake-applied position, power r means for moving said lever into brake-reel leased positiomand means connected 'to the l. A creol-braking mechanism having a said thread-controlled means for-'throwing the power means into operation.

6. A warping apparatus having, in combinatioma creely for rotatably supporting a plurality of cheeses, a brake member for each cheese, each brake member being arranged to bear against the periphery of the yarn mass of the cheese, means for movingv the brake members into and out of contact vvith the yarn masses, beamrotating means, and a beam brake arranged to permit` the beam' to supplement the momentum of the cheeses in causingl rotation of the cheeses for a time against the action of the brake members. 4

7. In a Creel-braking mechanism, a brakecontrollingl lever having a4 brake-applied and a brakefreleased position, thread-controlled meansr for holding said lever in brakereleased position, said lever tending to move into brake-applied position,` and power means for moving' said lever into brake-released position.

8. A vcreelbralin, mechanism having bralre-restoringn means, an operating member, thread-controlled means fori-moving said member in one direction to set the brake-restoring means in operation, means. for moving said member in the opposite direction, and means controlled by thebrakerestoring; lmeans for locking saidmember against movement in the last mentioned direction. i

9. A creel havingr a support on which a, yarn container may be loosely mounted, a brake member having1 a convex surface, and means for pressing the convex surface of said member against the middle of the periphery of the yarn .mass on a container mounted on said support to stop the container, and for removing;d said brake member from the yarn mass, the brake member being normally out of Contact with the yarn mass.

l0. A creel having supports for a plurality 'of yarn containers, a plurality of movably supported brake 'members and means Jfor moving` said brake members into and out of contact with the peripheries of the yarn masses on the yarn containers.

11. A creel having supports for a pluand a beam brake, the beam brake being less 12. A warping apparatus comprising a Y .`creel,'beamrotat1ng means, creel brakes,

eiective to prevent coasting, with relation to the mass controlled, than the creel brakes.

13. A warping' apparatus comprising a creeI, beamaotating means, 'creel brakes,

and a. beam brake, the beam brake being so In testimony whereof, hereunto my proportioned to the ereel brakes that the hand inthe presence of two'wtnesses.

beam While coasting causes the yarn masses 'HOWARD D. COLMAN. in the Creel to revolve after the Creel brakes In the presence o- 54 otherwise would have stoppe@ j sad yarn GEORGE L. CHINDAHL,

masses. MARGARET H. MANN.

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