US2428379A - Tensiometer for yarn coning machines - Google Patents

Description

Oct. 7, 1947. H, NAUMANN 2,428,379

TENSIOMETER FOR YARN CONING MACHINES Filed Aug. 7, 1941 4 Sheets-Sheet 1 d @Meli/@mmm am @.Wf

Oct.- 7, 1947. H, NAUMANN 2,428,379

TENSIOMETER FOR YARN CONING MACHINES Filed Aug. '7, 1941 4 Sheets-Sheet 2 Oct. 7, 1947. H, NAUMANN 2,428,379

-TENSIOMETER FOR YARN CONING MACHINES Filed Aug. '7, 1941 4 Sheets-Sheet 3 Oct. 7, 1947. H. NAUMANN 2,428,379

TENSIOMETER FOR YARN CONING MACHINES Filed Aug. '7, 1941 4 Sheets-Sheet 4 n 4 thereof with a c one- I thread tensionmeasuremenm aecomo located above tensionerA i2, it is evident that rejections from' customers'and the necessity for l rewindiiig with 'itsi' attendant rito" thread and 'waste ottime-oi coping machine operators.

Itis s further ebject'p'fjtnis invention te pro-l vide an apparatusfor the accurate measurement By me praeticefor the et the present-invention, it is contemplated that cones; oi

any selectedhardness may' be Produced substantiaily withoutthe necessity tor readjustments of theindiv'idual'fwindingunits once they have been adjusted-ienne windinsf-cf 'e certain one and n denier. of 'yarn'.

' (Zitherv 'objects and advantages of inven.

tion will be apparent' `from'lthe followingdetailed the extent vo i drag imparted to the thread by tensioner I2 andthe winding speed oi the cone will determine the tension ofthe threadfpassing therebetween. and hence the winding tension. According to conventional construction, .it is cus"-y tomary Iorthe drag imparted to the thread by description'ofaa preferredform oi the'component Figure-11 is-a perspective view-Soi paf tension measuring device constructedaccording to this f invention. illustratingthe operative association windingfmachine inltension measuring position; f

.Figure 2 is a viewjin planeet the tension'measurinf'gv deviceshown 'in Figure 1, .illustrating the 'manner of connecting the saine to" the` slubv' catcher 1 rodl and v` l' 'nii'e oi ja' .coping machine;

vrFigure-: 1 is aview 'in section taken valong the isure S1.

entire* tension measuring device illus-mung the PosiliionE-oI-- the moving verts *themt .during` a E" ela is. a view 'of a calibrated Figure lois ei-front viewer 'a winding unit of n conventionaL coning machine.

Before describing the various steps'by the pracing 'the --ten'sionxof thread during linear travel will be-discussed.`

vWhen thread is wound4 on aconi'ngmachine is alongltudinalfsectional vietri-ii'. the

seele eed in registeringrelative threadtensions:

Figure .9 isa''vieW--Qi anothercalibrated scale tensioner I 2to`be controlled by a weight Ila. vThe position and hence the eiIect of this weight .10

iscontrolledby radial movement o! the traverse arm I2'b caused by the increase in diameter ot #the wound -cone as the winding operation' progresses, The reason for this arrangement is Vthat take-upvspeed increases as the diameter V*of the AWinding cone increases. Thus. without adjustment. thread tension would continuously increase from the beginning of the winding operation to theend of the winding operation. To

compensate for this. the radial movement of the traverse shifts the weight associated with the tensioner insuch away that drag is progressively decreased as-take-up speed increases. On most coning'machmes it is possible for the operator tocontrol the. position of the weight at either the beginning or end of awinding operation, the

lshifting thereof being automatically eiiected by suitable linkagein association with the traverse mechanism.

In winding Vcones of predetermined hardness,

Ait is essential-that the winding tension at various stages be known, for it has been discovered.

` as a part of this invention, that the tension of the, thread at some stages in the winding bears an important' relationship to the characteristics of the 4wound cone .and thatii the winding tensions are-controlled in'those stages, itis possible to controlwith accuracy the build-up aswell as 'the hardnes's'of the cone which will be produced.

^ Howeven'before any degree of control is possible, -it is necessarytobe able todetermine accurately the winding Atensions at the critical stage in the windingoperation. To this end, this invention includesthe provision of apparatus for measuringth'read tensions between the tensioning device1l2 *andv the winding cone of any winding unit on a winding machine.

The tension measuring device includes an arm il, mounted for arcuate movement of a predeterl -mined iinit'e amplitude about shaft I 8, from a p0' position parallel to the normal path of thread passing from stop motion wire I 5 to guide I6, to a thread displacing position', see Figure 3. A spring I9 isemployed in driving arm l1 to thread displacing position, while a sleeve 20 is manually roof conventional constructiomit iscustomary to drive a l collecting cone land to draw thread -upwardly from asupply.v package onto such -cone.

Intermediate theicollecting cone and the supply package it -is the usual practicetoprovidej somel device forthepurpose of imparting dragtothe thread so aslto permit controlling the winding tatedv to -loadthe spring to the extent necessary to effect the desired angular movement of the arm Il against the resultant force tending to restore thethread to itsnormal path of travel. Clearly, since the thread is being pulled by cone I 2c from tensioner I2, it will normally follow a straight line 'path from stopmotion wire I5 to guide I6.

Whenth'e thread is displaced from this path, a

p iorce, resolved from the pull of the cone I 2c this device 'and the associated i:lienihers that areshown `in Figure 1.1 it will'beseen that as threadis drawn in the direction of the arrow,

from avs'upplylpackage notlshown to a driven cone l.l2c,i.i t will pass-through pigtail-g'ulies I0 and II-, .throughjwa'sh board tensionerrglZ.' between -a s lub-` 'catcher rod- |31 and slub kniferM, across-.- stop motion wirel I5 and iinally I through against tensioner l2, tends to restore the thread -to itsnorinaipath. It is evident that this force is aiunction of threadtension. Thread tension therefore', is measured through measurement of the compression-of spring I9 necessary to displace armA 'I 'I for a'ilnite. number of degrees against theres'ultant force acting through the thread.

Uponnreierence to Figure 2, it will be noted that shaft I 8 is adapted for detachable insertion 'into the hollow end of slub catcher rod I3. As a consequence, arm Il, which is mounted for arcua Ipigt'ail guide lifgsinc'e the cone is 75' ate moreinentabout that shaft, will move about an axis common to the slub catcher bar and so will contact the thread at the same point in its path of travel on any winding unit, the slub bar, the stop motion wire and the pigtail guide bearing a fixed relative position on any unit of any winding machine. or, at least, being adjustable to such iixed relative position.

The slub knife I4 also bears a guide I8. As sluh catcher rod I3 is used to posiially extending keys 42 to stillanother sleeve 43.

Helical spring I9 extendsbetween this sleeve and relative position with respect to stop motion wire I and tion the device as a whole, knife I4 is used in positioningthepath of movement of armV I1. To

thm end, a disc 2| is mounted on shaft I8 andthis disc is provided with a bifurcated member 22 which extends therefrom parallel to shaft I8 .(see Figures 2 and 3). Member 22 is adapted for detachable connection :to slub knife I4 at the same time that shaft I8 is connected to constitute an extension of slub catcher rod I3. Disc 2Iis provided with an arcuate slot 23 through which arm I1 passes and a marker 24. Since slub catcher rod I3 andslub knife I4 always bear a xed relative position on any coning machine, it will be seen that when shaft I8 engages sluh catcher rod I3 and member 22 is brought into registry with knife I4, slot 23 and arm' Il will be automatically positioned with respect to the 'f path of travel of the thread. Similarly, marker 24 will be caused to-assume a iixed position with respect to the normal path of the thread between stop motion wire I5 and pigtail guide I8.

y Upon reference to Figures 3 and 7, it will beseen that arm I1; after passing through slot 23 in disc 2|, passes through a groove 25 in the inteange 28 of a sleeve 21 which is mounted for rotation on shaft I8. After passing through groove 25, arm Il is bent down to lie parallel to ange 28. An eye 28 is formed in arm I1 at the Y end thereof remote from the thread contacting end and a screw 29 passes through this eye into a threaded aperture in flange 28 to fasten the two securely together. A pointer 38 is also attached to ange 28 and extends radially therefrom in spaced relation to thread contacting arm I1. A screw 3| serves to attach pointer 38 to flange 28. The weight of arm l1, pointer 38 and their attaching means is balanced by counterof the thread, the greater the amplitude of movement on the part of sleeve 28 to'bring about the.

weight 32 which may beintegral with or attached tofiange 28. To insure substantially frictionless arcuate movement of the balanced weight of ange 28 and the elements carried thereby, a bearing assembly 33 is interposed betwee between bearing assembly 33 and `the hub of disc n sleeve Y 21 and shaft I8. A cage 34 is in contact with 2|. This bearing consists of two annular running surfaces 38 with an interposed annular member 31 carrying ball bearings 38. It is evident that by the use of `these bearings and by perfect balancing the weight of the flange, any

' force necessary to move arm I1 against the thread will be substantially equal to the resultant force tending to return the thread to its normal path,

friction being so reduced as to avoid interference with'the accuracy of the determinations.

To-elfect movement of arm I1, the operator manually grips sleeve 28 at a knurled portion 38 and turns the same in a clockwise direction as viewed in Figure 1. Sleeve 28 is connected to a sleeve 48 which is mounted for rotation on shaft I8 while the outer surface of sleeve 48 constitutes ashaft around `which sleeve 28 turns. Sleeves 28 and 48 are keyed together by aset screw 4I. Sleeve 48, on the other hand, is attached by axflange 28, the free ends thereof being attached as shown in Figure 'I by passage through suitable drilled apertures. A press ring 44 serves to maintain axially extending keys 42 in position..

It will be noted that sleeve 28 bearsa calibrated scale 24a which underlies the path of arcuate movement of pointer 39. Thus, when sleeve 28 is rotated to compress-spring I9, it will cause sleeve 21, its integral ange 28, the pointer 38 and arm I1 carried thereby, to move in the same direction. Y In' effecting a tension measurement, sleeve 28 is rotated suiilciently to move pointer 38 from the Flgure3 position to a position in registry with marker 24. Since pointer 38 and arm I1 are both permanently fastened'to ange 28 axed distance apart. arm I1 will displace always the same for each tension measurement made, sleeve 28 will have a varying amplitude of movement for it always moves atleast as far as pointer 3l Vand-additionally suilicient to load spring I9 enough :to drive arm Ilthroug'h its complete path of movement against the tension of the thread. Thus, the greater the tension xed angular displacement of pointer 38 rand arm I1. f

l Scale 24u, which is `illustrated in Figure, may Y be conveniently calibrated to read in grams ten-l sion. As shown, the scale would therefore read up topiifty-ve grams vbeyond which point the reading would be iifty-nve grams plus the additional reading brought up by the completion of the full turn ofl sleeve 28. To avoid confusion and-to render scale 24a always easy to read, ad-

justment of the initial loading of spring I9. prior to any movement f sleeve 28. is provided. vAlso,

a stop pin 45 is associated with sleeve 28 .and

with disc 2I, the two pins cooperating to prevent the turning of sleeve 28 more .than one complete revolution.

1t wm be noted than sleeve 2u is pm'wniedY with a number of spaced apertures 46 extending parallel to shaft I8 and arranged for cooperation with the shank of screw4l (see in particular Figure 5).

Furthermore, there are three threadedapertures 41 in sleeve 4Il each adapted to receive screw 4I'. Aperturas 41 are spaced apartfor a dilerent distance than apertures 48 so that in almost any conceivable relative position Aof sleeves 2l and 48,

one of the apertures 46. Y A

If screw 4I is withdrawn from one ofthe aper-` tm'es 41 far enough so that its shank no longer projectsv into one of the apertures 48, sleeves -28 one or the apertures 41 will be in registry' with' to be loaded, the operator withdraws screw 4I and grips the knurled portion 39 of sleeve 28. While sleeve 28 isiirmly held against movement.

a knurled portion 48 of sleeve 4 8 is gripped and 3 end of spring I8 is attached to sleeve In order that the extent of pre-loading of spring Il may be discerned without measurement, a marker 49 is arranged on sleeve III in position to register with a calibrated scale ill on sleeve 2l. Scale Il permits adiustmentoi' the instrument in fractions of grams. Thus a pre-loading ofspring Il is possible, which pre-loading will be readable on scale |50. Oi course, if it were possible to fabricate spring I9 so that it would have the same torsional strength at a given torsion angle. preioading would not be necessary. However, in order to provide scale 24a with a uniform gradua' tion the initial tension of spring Il is made individually adjustable. should not be more than plus or minus two hole spacings as shown in Figure i. Otherwise the since it would lack suilicient sensitivenesss for low range load measurements. The pre-loading of spring I9, once accomplished, is maintained by locking sleeves 20'and 40 together by the insertion of screw 4l in any two of apertures 40-41 at a'point where the tension of spring l! is adjusted to the graduation of. scale 24a.,

It is l'evident that in the dev ice'as` thus far described,the arm I1 (Fig. 3) will tend at all times to move in a counter-clockwise direction.- This tendency arises because .of the loading of spring I8. In order to maintain arm I'I in starting position, that is. at the left extremity of slot 2l, as viewed in Figure il.- a spring I I is employed.

This spring extends between sleeve 4l and a sleeve l2 which is keyed by a set screw. 53 to shaft |8. The action oiyspring 5| .is'in a counter clockwise direction and its Vforce is' suilicient to maintain arm I'I;in the starting. or, left-hand position, regardless of the loadingof spring Il. until such time as knurled portion 39 ofsleeve previously stated that pointer Il and arm I1 are attached to ilange 2t of sleeve 21 In fixed spaced relation. Thus, when pointer Il has moved into registry with marker 24. arm I'I will have been The limit of preloading spring would not be suitable for this instrument is gripped and that sleeve is turned in a clockwise direction to move arm I'I- for a ilxed distance into thread displacing Position due tothe loading of spring I9.

A cylindrical housing surrounds sleeve 52' and spring 5I, this housing having an end plug 55 which ts over shaft i and a set screw 55 which locks the same in xed position with respect to the shaft.A Upon reference to Figure '1, itvwillbe seen that set screw 56 locks cylinder I4 and plug 55 against 'relative movement and against movement; with respect 4to shaft I 8. Housing 5.4 acts as a handle which the operator may grip during such times as shaft I8 and bifurcated member 22 are being placed in position on slub catcher bar I3 and slub knife I4, re-fl spectively.

When the device described above is used for measuring the tension of thread passing between -two i'lxed points such as stop motion wire I5 and pigtail guide I6, shown in Figure 1, the operator grips the handle 54 and inserts the free end of shaft I8 into the hollow 'of slub catcher rod I3 and simultaneouslyA moves the hifurcated member 22 into cooperating engagement with slub knife I4. Arm II will be disposed in a plane parallel to the plane of the thread in its normal path of travel- When a measurement is to be taken, the operator turns sleeve '2B by the use Aoi' thumb and foreflnger as shown in Figure l.

The sleeve is turned in a clockwise direction until pointer moves into registry with indicating marker 24 at the top of disc 2l. It has been moved for exactly the same distance. This distance is predetermined and is used in controlling the calculations by which. the gradations on calibrated scale 24a are made up. The advantage of accurate control of the extent of movement of arm I1 will be recognized when it is borne in mind that the force necessary to displace thread to any extent from its normal path oi' travel, although always a function of thread tension, will bear a diiferent relation to thread tension at any extent of displacement. Thus. ii arm I'I were not moved for a nxed distance, it would be necessary upon taking each tension determination to measure the extent of thread displacement aswell as the i'orce necessary to eiect that displacement and to compute thread tension from the two variables. Acco nsly, disc 2| with its associated member 22 for an important function in denitely locating t radius of slub bar Il in which marker 24 lie, since this marker serves to indicate the extent of movement of arm i1 therebyreducing thread tension determinations to a force measuring problem involving but a single variable, it being apparent that the thread always bears a fixed position with respect to the slub bar. By the time that pointer Il is in registry with marker 2l, arm II will have moved through slot 23 from left to right as viewed in Figure 3. The movement of sleeve 2l, however. will be considerably greater than the movement of arm II since sleeve 2li must be moved sumciently to 10nd spring I9 to that extent required Vin overcoming the resultant force tending to restore the thread to its normal path oi' travel between stop motion wire I5 and pigtail guide Il. This lost motion will be measured by Vthe difference in relative position of the scale 24a and pointer III.v Thus, pointer SII and zero on scale 24a are in registryin Figure 3. However, in Figure 2, which represents a tension measurement,the reading will be above. zero an extent dependent uponthe resistance oifered by the thread to displacement by the arm Il. It will be realized that sleeve 2li moves with, as well as with respect to pointer 30. Thus, if a hypothetical case were assumed in which the thread offered no resistance whatsoever, sleeve 20 and pointer B would Amove together until pointer 30 was in registry with marker 24. The reading on scale 24a, however, would be zero.

As has been pointed out above, there seems to be no correlation between the initial winding tension of thread being wound into cone form and the extent of hardness ef the cone produced. This is true despite the fact that practically all coning machines are provided with means for modulating the drag imparted to the thread by the tensioning board with increases in cone diameter. Apparently, the diiiiculty arises from the fact that the rates of change of drag with respect to increases in cone diameter are not constant on all winding units of a coning machine even when the starting drags are equal. The inaccuracy may be due to slight variations in the physical characteristics of threads of like material and equal denier, as well as variations in the eil'ect of the mechanical parts controlling the wash board tensioning mechanism, etc.

It-has been discovered, however, as a part of this invention that there is a correlation between the beginning and end tensions in cone i' zwi-isn ai naamw-tia 'tuin-un if ne 'finished cone, Ifl a number of Winding units. i iusted' 1:0 an" equaifmoduietionfrete, are? startgut-4 "io f continued until it 'reached the ,same

-' possess th'esame hardness vvmaster cone. l Oncethe winding umts have been as; menester-cane ofthe desired hard- '.ness. I t---will-be found that all ofthe cones pro- -fduced on "the units so will build-up asthe adjusted in themanner hereinbefore described,

lno.additionaltension adjustments are necessary provided the'type and denier-of yarn..the of .the .cone,' the winding speed; etc.. remainv coni.,

-" stant. -In orderto expeditethe adjustment of a tion"'.a s use din this Siiicationisintended indicatethe rate of .drag reduction!oftensioner |-2 in responseto increase ineftectivediameter HoffconeI'2c,1seel?igure10.' f

' In accordar'ice` .With the present iifiventiom the beginning and @amusing-.tensions determined asv follows. Yarn .of unifor'mtypef and denier "is-' i simultaneously wound. into cones 101,. thefdesired size onseveral windingnnits-subse-f Aquent tothe'adiustmentofthetensioningde- 1 'vices .on these-unit'sjto a settinrwhich from.`

practical' experience is known'to yield- 'cones `of approximately. the A desired degree of hardness.; 5' After the cones have been'completely-woundfto the desired size, they are removed from the winding'spjindlesand subjectedto a hardness 4test fard hardness testing device." preliminary; f-

coning' experimentv generally yieldsat"leastjone" ,cone which; possesses vthe 'desired hardness.

largenumber of winding units, the use of a. plu- '-rality of conesfinplace of a master cone suggested. dummyfcones are of a size substantially equal to the'siz'eof the master cone which isto be duplicatedon. a large scale.v vWhen dummy.- cones are used,A the procedure for ad- Justine the winding units win be identical with' 'that 'one' describedwithfrespect to the master ifcon'e.v It has beenfound that adjustments of the beginning tensions are rarely necessary. and

finthose' instances .where they are required they cone issin'gled out in order to bensediasa master cone;for` the production of duplicate cones, i. e.;V

cones'havingthesame degree ois-hardness and uniformity in build-up--asljth'e master cone-For f the I determination of the end lwinding tensioni;- the 1 aforementioned :master `c `or1 e still 'fully wound;- is placed. back into winding" position on the 'windingunitf on which it was. prepared and-. immediately 'upon commencement of-'the winding operation a' measurementof thethread'ten-.1'- sion is taken with the apparatus which-is afiliartl J fof the present invention. This measurement gives lthe end winding tensicn of the' thread. The mas-j ter cone is'then removed from the spindle and an empty conefcore havingthe samediz'lnen-4 sions asthe core'used'in-windingthe-master cone. is placed into winding position thereon. 'I'hrea .di o f the same type and denier vas' that ofthe master cone is .wound -onto the. core 'and 'concurrently I i the tension of-themnning thread is measured'by'p l means ofthe aforesaidinstrument. "The'tension '55" beginning winding tensionof the master cone'.

determined by. this measurement represents the The beginning and end .winding tensions thus determined arenow vused asa'basis -for tiratori-"x f' sion adjustment of all of -tliefwindixig units on which themastercone is tube-duplicated. Each measurement .-'is made, the drag. adjusting"v meansv 60' oneof'these windin'gunitsv isirst'adjusted to the .l predetermined "end winding tension by means 'of temporarily placing the aforementioned master cone on the windingspindle andi concurrently j mea su'ring the thread tension.- Since'the master cone isnfu'lly woundat the time the tension The,

are so slight that'no material changein the-end tensiontakes place for which the winding unit has previously been adjusted. Modulation of threadtension with'cone diameter willoccur .in

.the normalway' but when. the traverse mechanism reaches the point .that it'assu'med on the dummy cone at theV time the end tension adiustment was made, the tension will be that onenecessary for producing acone of desired hardnessi winding cones according to the foregoing -'process, it =has been found that identical be ginniiig and-end tensions on all winding units 1 will produce conesofl uniform hardness.- Generally speaking; however,l all f other factors re- 40 maining constant; increases in denier of thread :will result in' decreases in `cone hardness; Thus,

to insure cones of any predeterminedhardness vdenier-'-variations must be considered. The followingtable will serve asian example of the particular beginningand end tensions: necessary to -produceicones of predetermined hardness from threads Iof various deniers. all unmentioned factors being-constant? ness o f sixty asrmeasured'by a Durometer.

unit n adiustedjto the predetermined-:beginning 7o volition; herewith'shown'and described, isto be such an' adjustment should beltonen -ri ece's sa.ry, .whereupon -the winding ofthe cone Bgm End Tension zo t cones listed above wereA wound at an average room temperature of 82 F. and an average relative humidity o'i' 56%. The largest outside diameter of these cones after. complete` was approximately 5%", and all of thel Vconesfinentio ned inthe foregoing table possessed afhardness of sixty according to measurement -b'y a'Durometer.A 'Any changes in the aforementioned vfactors would necessitate different beginning f and end tensions as those given in the j taken as a preierredexample of thc -san1 'e,i'and that various changes and variations maybe'made.

i without departing from the 'spirit oi my 'inven- .tion orthe scope ofthe sub'Joined claims; 'j j y 1. A` device i'or measuring the tension fot. thread duringjlinear travel between two i lxed stationary points on'a winding. machine icoln. pricing. a threadcontacting arm, meansiorde- `taci-lably supporting the arm for arcuate-'ipove-- ment about an axis ilxed with respect 'to 7one:ci f the -nxed points todisplace -therunning thread 4from its normal -path oi' travel between the points,- a manually-operable -driving-me-inber, a resilient f* l" tension-detecting means contacts' the running torque transmission connecting. saidl arm and said.

' driving member, registering members movable with said arm `a'nd'said driving'memberior in-i dicating in terms oi thread tension the energy f absorbed by said transniissicn in moving saidarx'n against the resultant i'orce tending to restore the thread to its normal path ei.'rtr avei.

2. A device for 4measuring the tenaiqnffjoithread during linear travel'between two'iixed stationary points on a-winding' machinejcm-f prising, a thread contacting arm, means torjde tachably supporting the' for arcuate' movement in a limited path about an axis fixed withI respect to one of the ilxed pointsto dispiace the running thread to a limited extent' fromfits nor- I mal path of travel between `the points, a manually operable driving member.' a spring ier transmitting torque connecting s aicl `arm and said driving member, registering members movable with said arm and'said driving member 'ior indicating in terms oi.' thread tension thefenergy 35 absorbed by said spring in 4moving-said. armv for the full amplitude oi' its ilxed path against the z resultant force tending to restore the thread to its normal path o'f travel.

3. A device for measuring 'v thev tensionoi.'-

thread during windingon a coningmachineprp'- vided with a slub bar and a guidev in iixedsp'ajced relation thereto. comprising, a thread` contacting' arm adapted to act on thread ata point between, the slub bar and the guide, means adapted-iur 1 detachable connection to the slub. b 'ar' for' s'up porting said arm for movementl in an' arcuate path to displace thread laterally, meansi'or. prei.

determining the position 'ot said path in relation '5 to normal path of travel of the thread; means normally maintaining said ann in. parallel .rela-1" .1." tionship with respect to the normal f-p'ath Vci ;f travel ofthe threadirom the slub bar to :the guide, including resilient means for driving said arm away from normal position to displace' thread laterally, and means for loading saidres'ilientj' means to the extent necessary to move the-arm t for the full length of its path of ltravehand meansl :er registering-the extent er leading-ofthe reg silient means interms oi.' threa'dtension.

'4. The combination with a winding machine having a plurality cf thread windingg'stations each includinga thread guide andf'afthreadtensicn .regulating device in spaced relation. the thread.

ingmeansadapted tog-contact a. thread running measuring device'havingjthread tension detect -between the thread guide andthe thread tension regulating means of a thread winding station and device adapted to sof'detachabiy connect 'the thread tension-.measuring device to the slub bar and siub knife oi' the threadv tension device of a thread winding station that the thread thread at. a predeterminedf distance from `the .thread `tension regulating deviceirrespective of the 'thread winding stationwithwhich-the thread" tension measuring device isassoelated.`

-including'a multiplicity "oi identical :winding '-.-each of vwhich includes a ilxed 'thread guide and af slub catcher in fixed spaced relation to the fixed ,threadfguide saidlslubcatcher having a' slub bar grand a siubknife 'ccoperating'.herewith,''of a; thread 'tensionv measuring. device adaptedto, be interchangeahly. 'associated` withlthe individual y5..r The combination with .a winding mach-ine "windingunitasaid'thread.tensmnzmeasuring .dei-'f -vice "comprising adisplaceable thread' 'engaging' f.'-

"3 .arm adapted to engage-a thread travelling be-` tween the slubr catcher fand the. *iixed' thread guide. means cooperating withthe thread c llsag.- 'i118 arm for-registeringin oi thi ea d.ten' 1, sioni the `amount oi' energy *requiredl to 1 overcome' displacement of' they ltravelling thread", byjthe'V thread engaging arm' and'means..carried by the ltensionmeasuring device for .detachably engage.

'ing both' the lslub barand lsiub knife for' .accu--` I gratelocation'oi the point ofcontact'ci the thread.

40 engaging. arm .withythe travelling thread -spective ci thethrea'dfwindingunitwithfwhich the thread tension `measuring-devies e. isass'ociated HERBERT hamm."-

STATES PATEN'rs'i'

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