US1793427A - Stop motion for dressing machines - Google Patents

Description

Feb 17, 19 1.

J. P. KING 1,793,427

STOP MOTION FOR DRESSING MACHINES 3 Sheets-Sheet 1 Original Filed June 15, 1928 IN V EN TOR.

A TTORNEYS.

Feb. 17, 1931. J. P. KING 1,793,427

7 STOP MOTION FOR DRESSING MACHINES Original Filed June 15, 1928 5 Sheets-Sheet 2 1N ENTOR.

42W VIM? A TTORNEYS.

Feb. 17, 1931 J. P. KING 1,793,427

STOP MOTION FOR DRESSING MACHINES Original Filed June 15. 1928 3 Sheets-Sheet 5 I NV EN TOR.

ATTORNEYS.

Patented Feb. 17,' 1931f 1.1031142; kmdonPRovxnEnoE, RHODE ISLAND, ASSIGNOR TO WALLINGJfia WALLING, or PROVIDENCE;RHODEISLANQ AFIRM ooMPosnnoF-avmtmr L. WALLING'AND LESTER- s-.- WALLING sror .mom-ron roa DRESSING mcmms App1 ication filed June 15; 192 Saar-m. 285,758; Reneweaj ane 27; 1930; 1. a

, This ini cntion'relates to'improvements I stop mot ons; more particularly adapted for usein thread d'ressing machines. The generaltypecf "di-essing machine shown and dc scribed he'reinis; ClflllDQCllILfi; separate apply" cation filed by me? oneven date herewith An object of the'inventionis to-provide a stop-motionforthread-dressing machines wherein a'detectorarranged to be actuated by "an imperfection 1n the thread causes the threadfeeding mechanism to become lnoperative.

I Another object is -to provide means for auto matically disconnecting the thread feedingf1nechanism from the dPIVHIgQIlGCllanlSIH when an imperfectionis-'detected in the thread.

Another object is to produce an efiicient,

strong and durable stop-motion for thread ,dressing machines, which issimple in con *"struction mi inexpensive to manufacture.

With these andother objects in View, the

invention consistsof certain novel features of construction, as will be more fully described, and particularly pointed out in the appended claims. h o

The vlews-ofthe; drawings are as-follows Figure l is a" plan of'a thread-dress1ng ma- 7 chine constructeda'ccording to the invention, the stop-motion mechanism beingshown 1n normal operative position.

Figure'2 is-aview partly in elevation and partly in section showing diagrammatically the mode of dressingthe thread in the machine shown in Figure 1. i r

Figure-3 is an enlarged View of'the stopmotion mechanism shownin Figure 2 Figure &' is a-section taken on the line 44 of' 'Figure 1 showing diagrammatically the mode of taking the'thread from the supply package;

Figure 5 is a verticalsectionthrough the eye in the end of the detector'arm;

Figure 6 is a horizontal section through the thread'feeding mechanismshowing a stopunotion-partly in planand partly insection. Figure 7 is a vertical section taken on the line 77 of Figure'6; and

Figure 8 is a'view, partly in section'and k partly in elevation, asseenfrom the line 88 of Figure 6.

lmechanism when imperfections are detected in the threads, so that such'imperfections can the same downwardly: For the purpose-of? ,gagea set-screw" 27-tlireaded through th racketlfi," r ,1 I a It is of advanta'ge in the manufacture of threads, and the; like toprovide the machines used for dressiiig andfinishing the threads 7 with means for automatically stopping- .the"

be' removed beforethe threads are finished and'rewound; and it 'is also ofia'dvantageto so construct and arrange the stoprmotion' mechanism that the several portions of -the dressing machines simultaneously and auto-i" matically stopped through the actuation of single element; and the following is-a ds'cripi' tion of one constructionby which theseadva1i"- 'tageous results may sbe accompli h L Referring-tethe drawings; a threadfdress mg machine equipped with'my,inventio'11';is 7 shown as including a frame composed -'"offside' bars 11' and312, "and e'n'dbars' 13 male; ar-K- 7 rangedre'ct'angularly in the manneiflsliown' in Figure 1, to best receive and support the-w several parts "ofthe machine, aswill behere inafterjmore'fully describedij' v V The end bar 1'3"0f the frame has "a" pair of brackets 15 and 16 fixed th'ereto andextend 5 ing inwardly'therefrom'. 'Thesexbrackets are adapted to receive a spindle 1 7 on which is revolvabl-y mounted a' spool 18"containing".' the thread 19 to be dressed and-otherwise fin ished'in'the-machine;

The brackets 1'5" and-16 are extended to provide upright arms 20 which-1 support a cross-- bar 21, over which'the thread 19-passes; As

shown, the bar 21 should'be disposed above,

and slightly in advance of the'spool 18.

The bracket 16 has an arm 22 pivotally com nected'thereto, asindicat'edat 23. This arm is extended to a point in front ofthe spool 18; and carries aroller 2 1. Thethreadis passed, in the form of a loop-255under theroller-f24 and over the cross-bar2li' Iii this-waythe' roller 24 andthe arm 22- will=besupported by the loop 25' a11d the weightof the roller'fi: and arm tends to tighten the loop and draw-- limiting the downward swinging movement of the roller 24, the inner end Iofi-the arm 22 is provided with afoot-26 adapted to one For the purpose of retarding the rotation of the spool 18, as well as the delivery of the thread therefrom, one end of the spool has a circular disk 28 fixed thereto. This disk may be positoned on the end of the spool adjacent to the arm 22, and such disk is partially encircled by a band 29. One end of the band is fixed to the arm 22, as indicated at 30, while the opposite end of the band is secured to-a fixed portion'of the machine, as indicated at 31.

The tension of the thread being unwound from the spool 18 is such thatjduring the operation of the machine, the roller 24 will be lifted suficiently by the loop'to relieve the pressure-ofthe band 29lonthe disk'so that the spool will be free to rotate at a speed substantially equal to the speed'at which the,

thread is travelling. through .the machine.

However, as soon as the'speed of the thread is retarded theloop25 will lengthen, therebypermitting theroller 24 tofall sufficientlyto draw the band29 into engagement with the periphery of the disk, and thus retard 1. the rotation of the spool so as toprevent the thread from being delivered from thespool faster than the same isdrawn through the machine. In this way, voverrunning of the v the speed at which the thread travels through spool .is,prevented and the thread willbe delivered therefrom at'a .speed equivalentto the machine.

It will alsolbe understood, thatjshould the thread break after leavingthe spool, the j tension of the thread in the-loop 25 will be released," thereby permittingthe arm 22 to swing downwardly on its pivot whereby the band 29 will be applied to the peripheryof the disk with sufficient force to immediately prevent further rotation, of the spool.

In this way a simple and effective brake,

has been provided for; controlling the delivery of thethread from the spool, and, as will be hereinafter fully described, mechanism is provided for automatically actuating this braking means, as well as for automatically stopping the -machine,swhen any-imperfections are detected in the thread. 7

The'thread is immersed in a suitable liquid solution contained in a tank 32 located in the bottom of the machine. The thread may be guided through the tank by a pair of spaced wheels 33. V

The sides of the. tank may be enclosed by a jacket 34 containing water having a temperature suitable for maintaining the liquid solution in the tank 32 at the desiredtemper ature, In order to remove excess liquid from the thread as it emerges from the tank, the thread passes through a wiper 35 of any approved construction.

In the particular type of machine herein shown the thread, after it has been immersed in the solution, ispassed a number of times around a pair of spaced drums 36 and 37 proved type.

each drum having a multiplicity of grooves 38,-so as tog'uide the thread and separate the loops. V v

The drum 36 is mounted on a shaft 39 journalled in bearings 40 and4l, the former being fixed'to the side barll, While the-latter is fixed to the side bar 12, of the frame. One

end of the shaft 39 carries a gear 42 which meshes with a gear-4.3 on a drive shaft 44 supalso be revolvedby the travelling thread which propelled by. the drum 36, the loops of the thread serving as means for transmitting the power from the drum 36 to the drum 37, as will be readily understood;

Thedrums 36 and 37 preferably should be of the same diameter and have the same number of grooves 38, and the thread, which first passed over the drum 36, is then looped around the drum 37 and returned to the drum I 36, this looping of the thread around the drums continuing until a multiplicity of loops are formed. In this way a considerable length of thread will befexposed to the atmosphere between the two drums, thus permitting some of the solution to evaporate before the thread is further treated.

The thread is led from the drum36 upward to' a drum 50 at the top of a. dryer 51, the drum 50 also being of substantially the same diameter as the drums 36 and 37 andhaving a plurality of grooves for receiving the thread. V p I r I The dryer 51 comprises an elongated body, preferably formed'from sheet metal and having an open top to permit the escape of the heat, and its bottom connectedtoa pipe 52 containing a heating element 53, of any ap:

The circulation of the heat. through the dryer may be effected through a blower unit 54', of any desiredtype. 7

Near the bottom of the dryer there is another grooved drum 55, similar in construction to .the drum 50. The thread is passed around the drums 50 and 55 a multiplicity of times, and is then led from the drum 50 to a spool 56 on the end of the machine opposite to the spool 18. v

For the purpose of moving the thread through the dryer 51 and also for the purpose of reducing the elasticity in the thread,

meshes. with. an. idler gear 58 revolyably moimted inabracket, 592fixedtto the side bar 12, and the gear 58 meshes with a geanbO:

fixed to the spindle 61 of the drum 55.

The gear 60l'is provided with fewer teeth- 2 than the gear57, andthe construction and arrangement of the parts should-be such vthat the drums 36 and 55 are both rotated inthe sameldirection with the speed of the drum-55 slightlv faster than that of the drum 36 so thatrtlie thread will bemoved faster around the: drums and than it travels around 7 thedrums 36 and 37.

Inasmuchasthe drum50 will be rotated at the same speed as is the drum 55, the

tendency Wlll' bG for the drum 55 to draw thethread-will be stretched. In actual practice ithas been found that there is a slight slippage in the initial loops of thread around the drums 50 and 55 after which, the length (of the thread having been substantially in- 'creased,the remaining loops of the thread will travel around the drums 50 and 55 with thelsame tautness. It hasalso been found that the stretching ofthe. thread in the manso her hereindescribed also serves to compress the projecting fibres of the thread down on to the body thereof, as the thread passes around thedrumsw i I It is desirable that-the thread inthe dryer be smoothed so as toimpart'a linen-like finish thereto. Any suitable means may be em- I ployedi for this purpose, such for instance as the ironing. devices 62 mounted in pcckete 63 01 the dryer,which devices'have fingers fid'through which the thread passes, as'shown in Figure 2. V I

The spool 56 is mounted on a spindle 65 carried by abr acket 66pivotally mounted on the'endbar ll-ofthe frame.

Obviously, the spool 56 may be rotatedin any. suitable manner, so that it will take up the thread from the dryer 51. As showmthe spindle 61 has a pulley 67'mounted thereon, which pulley is connected to a pulley 68 carried'bythe spool 56, by a belt 69.

The bracket 66' may be retained in a fixed positionbymeans-of an arm 7 0 fixed to the sidebar 11 andengaging one of the sides ofthe bracket, in the manner shown by Figi ure 1.

For the purpose of laying the thread evenlyon the-spool 56,- use is made of a slotted arm 71, which-is carried by a rod 72, slidably mounted in brackets 7 3 and 74. The rod 7 2 is-reciprocated by a cam 7 5, mounted in the bracket 74. The cam is adapted to be driven from the gear 42, by a spur gear 76 carried byabearing77 fixed to theside bar 12, the

hub of the-gear 76-having aworm 7 8 meshing with a=wormgear 79 on oneend ota'counter .shaft 80.; .The opposite end'zotrtlieshaft; 80f

has-aworm8l which mesheswith a: worm gear- 82011 the shaftof the camu7 5. The'lconstructionshould be. such: that one revolution of the-clam will move the arm 71. vforward:

spool, :as will: be

and backward over the readily understood.

It isof advantage in machines vofitheitype herein-described;v to provide means for'auto; matically arresting the operation when im-;

perfections appear in: the thread, .so that: the. imperfecti ns canbe removed before. the, thread isfinished." Bythe present-invention, thedrum 36 is connected to theshaft': 393

through afclutch 83. This clutch is normally. engage'd with-the drumand it isadapted' to. be disengaged therefrom, either automatically or manually, by mechanisms to behereinafter fully described.

The: clutch 83 is slidably mountedion 5 shaft 39, being keyed-fto the-shaft,.as indicatediat 84,-. The periphery of the clutchxis bevelled, asat 85, and this surface is adapted to engage with a: correspondingly bevelled; face 86 formed in the end-of thedrum 36..

The clutch is recessed; to receive an expansible coil spring 87 whichencircles theshaft? 39' and bears againstthe'iends of-ithe drum.

and the clutch. to-force the latter awayfrom the former.

For the purpose the drum 36, I have provided means,..includ+ of i retaining the: clutch 83 in operative engagement with. the endtofr ing a lever 88 which is fulcrumed ina bracke et 89 carried by the side bar. 11. The endof the lever adjacent to its fulcrum point is bifurcated, as indicated at 90, to provide two- These arms for straddling the shaft 39'. arms of the lever are so formed that the ends thereof bear against a. thrust bearing-9.1 on the outer-portion of the clutch 83 and'force:

theclutch inwardlytowardsthe drum (see Figure 6). The end or" 83 is encircledby' a band 92 composed of two semi-circular sections pivotally supported by a bracket 93. The bra-'cket93 is carried by a rod 94 supported in the frame. The

free ends of the sections ofthe band 92 are provided withbeveled faces 95, and beyond; these faces, the extremities of each of the sections of the band are formed with oppositely projecting bosses 96, which are disposed transversely of the band, such bosses being formed with alined openings through which bolts 97,-or the like, are passed. Springs 98 are mounted on each of these bolts, in the manner shown by Figure 7 so that'the free ends of the-band 92 will:

be drawn together to cause the band to frictionally engage the periphery of the end the drum 36' adjacent the clutch V V of the drum, andthus' prevent rotation-of the drum.

However, inasmuch as the 4 drum should be normally free to rotate, the lever'SS-is proof-the. band from the periphery of the drum,

in the manner clearly shown by Figure 6,

and when the lever is actuated to disconnect the clutch 83' from the drum, the lug 99 will bemoved inwardly towards the drum a sufficient distance to permit the springs 98 to draw the sections of the band 92 tightly against the-drum so as to restrain further movement thereof.

The end of the lever 88 opposite to the end 90 thereof is adapted to be releasably connected to a detector member, in the form of a lever 101 fulcrumed in a bracket 102 carried by the side bar 12. The outer end of the lever 88 has a socket member 108 adjustably mounted therein, while the bracket 102 is provided with an car 104 carrying a similarly formed socketanember 105, also adj ustably mounted therein. The members 103 and 105 are disposed in alinemcnt with each other when the lever-88 is in normal. position, so as to receive and retain an annular head 106 on the end of the shortnrm of the lever 101 (see Figures 6 and 8).

vertically, while the lever88 is adapted to be swung in a plane atright angles thereto, or

horizontally. Asshown in Figure 7, the pivotal mounting of the lever 101 includes tension means comprising a coil spring 107 adapted to force the end ofthe long arm of the lever upwardly. The outer .end of the long arm of the lever 101 is provided with an eye 108 through which the thread 19 passes. The disposition of the eye 108 should be such that it is directly beneath the cross bar 21, and the opening in this eye should be of such size as to ordinarily permit the passage of thethread, but prevent the passage of knots or other imperfections in the thread (see Figure 5).

In this way the eye 108 constitutes means for detecting imperfections in the thread, and

The lever 101 is pivotally mounted to swing to draw the sections of the band 92 into-frictional engagement with the periphery of the drum.

The continued rotation of the spool lengthens the loop 25,, thus permittingthe arm 22 and roller 24 to descend, thereby ap plying the band 29 to the disk 28, in the manner heretofore described, andin this way further rotation of the spool 18 will be prevented. r

Inasmuch as the drum 55 is driven from the shaft 39, as soon as the clutch 83 has been,

disconnected from the drum 86, the drum 55 will also stop, and in this way further travel of the thread through the vmachine will'be.

prevented until the levers88 and 101 are re? set to the operative position shown in Fig ure 6.

is provided with a handle 109, which may be used to manually disconnect the lever 88 from the lever 101, and which may also be, used to re-engage the ends of the levers 88 and 101 with the latch provided by the sockets 1 03 and 105 and the head 106.

The foregoing description is, directed sole-- The lever 88, above the socket piece-103,'.

ly towards the construction illustrated, but 1 desire it to be understood thatI reserve the privilege of resortingto all the .mechanical caanges to which the device is susceptible, the invention being defined and limited only by the terms of the appended claims.

The invention claimed is 1. In a thread-treatingmachine, a-thread supply package, a thread take-up, spool,

thread feeding mechanism, a feeder arm intermediate the supply and feeding mechan sm for detectlng lmperfections in the thread, said feeding mechanism having a brake normally inoperative and a clutch normally operative, and a single lever supported in operative position by said feeler arm affected by the movement of said detector. to

apply the said brake and disconnect the said clutch.

2. In a thread-treating machine, a thread supply package, a thread take-up spool,

thread feeding mechanism, a feeler arm pivotally mounted intermediate the supply and feeding mechanism for detecting imperfec-f tions in the thread, said thread supply package having a brake, said feeding mechanism having a brake, normally inoperative and a clutch normally operative, and means affected by the engagement of an enlargement in sald thread with said feeler arm for simultaneously applying both of the said brakes and disconnecting the said clutch.

3. In a thread-treating mechanism, a

thread supply ,package, a thread take-up spool, thread feeding" mechanism, a feeler arm pivotally mounted intermediate the sup 7 ply and feeding mechanism for detectingim perfections in the thread, said thread feeding mechanism including a drum, means for.

rotating the drum, a clutch for disconnecting the drum from the said rotating means, a brake adapted to frictionally engagesaid drum when said clutch is disconnected therefrom, a single lever arranged to control action of both said clutch and the said brake, and means whereby the engagement of an enlargement in said thread .with said feeler arm actuates said lever to disconnect the clutch from said drum and to apply the brake thereto.

4. A stop-motion for thread finishing machines. including a pair of levers arranged with adjoining ends detachably locked together, one'of the said levers being mounted to swing in a horizontal plane tocontrol the said drive. a tripper for said drive control lever. a detector lever controlling said tripper, whereby a passing imperfection in the travelling thread is caused to move the detector lever .to trip and release said drive control lever to disconnect the drive and apply 7 7 the brake by a single movement thereof.

6. In a thread-treating mechanism, av thread supply package.v a thread take-up spool, thread feeding mechanism. means in-" termediate the supply and feeding mechanism for" detecting imperfections in the thread, said thread feeding mechanism ineluding a thread-carrying drum, means for rotating the drum, a clutch for disconnecting the drum from the said rotating means, a pivoted drum-drive control lever, a pivoted feeler lever, the control lever being retained in operative position by-contact with said feeler lever,'whereby the passage of an obstruction in the thread moves the feeler lever to releasethe control lever permitting the clutch to move-and stop the machine.

V 7. In a thread-treating machine, a'thread e supply package, 1 a' threadtake-up spool,

thread-feeding mechanism between said supply and take-up, clutch control means for saidmechanism, spring means normally urging said clutch controlmeans to inoperative position, a feeler arm positioned to be actuated by an imperfection in the thread, and a lock device on said arm normally holding said clutch control means .in' operative position, whereby actuation of said feeler arm by a thread imperfection moves thelockldevice to release the clutch control means. 7

In testimony whereof Iaiiix my signature,-

' JOHN 1?. KING.

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