US2207863A - Tension device - Google Patents

Description

July 16, 1940- H. w. HITCHCOCK TENSION DEVICE Filed Jan. 19, 1959 s sheets-sheet@ 4 "f j gg l" g/ 59% Za Ma/ff 7p l 5 Z5 7/ j fg -fg 55 f5 il 35 54 @D Ww 2 /9 f7 v 76' n 9 V' M22@ @15, Wfm

, July 16, 1940. H. w. HITCHCOCK TENSION DEVICE 3 Sheets-Sheet 2 r ll,

Filed Jan. 19, 1939 July 16, 1940.N

H. w. HITCHCOCK TENSION DEVICE Filed Jari. 19, 195s pagina July 16, 1940 TENSION -DEYICE Harold WoodA Hitchcock, Apponaug, B.. I., as- 'signor to Universal Winding Company, Cramton, R. 1.,' a lcorporation .-ot Massachusetts Application January 19, 1939, Serial No. 251,816 14 claims. (c1. 24a- 150)` This invention relates to improvements in devices for tensioning a strand of yarn, thread or the like during its delivery to a winding machine, or in other transfer processes, and particularly to means for controlling the amount or degree'of tension applied to the strand in accordance with its linear speed or rate of draft.

In the following specification and claims the term"yarn is employed in a general sense to 1 apply to all kinds of strand materials, either textile or otherwise, and the designation pack- -age is intended to indicate the product of the winding or like machine whatever itsform.`

One object of the invention is to provide a dinerential tension-device adapted to operate automatically to maintain a uniform tension on the yarn during the winding or other operation. Another object of the invention is to provide controllingl means for the tension-device which act positively and accurately to reduce the applied tension on the yarn as the speed of draft of the latter increases whereby to maintain the ultimate tension uniform throughout the winding. Another object of the invention is to provide controlling means of the type indicated which act positively to control the tension applied to the yarn without the use of springs,` weights o r other elements liable to cause vibration or chatter of the tension-elements. 30 Another object of the invention is to provide controlling means of the type indicated which may be minutely and accurately adjusted in accordance with the requirements., l

Another object of the invention is to provide Iare adaptable for 'use with tension-devices -of various types having a tension-element movable with respect to another fixed-element to vary the degree of tension applied to drawing between the elements.

40 Another object of the invention isV to provide controlling means of the type indicated whichv controlling means of the type indicated whichthe strand' ing the applied tension as the linear speed of the yarn increases during the winding operation;v

Fig. 2 is an enlarged part-sectional side elevation of the tension-device and the controlling means therefor showing the position assumed by the parts at the commencement of the winding operation;

Fig. 3 is a view similar to Fig. 2 showing the relationship of the parts at a later stage in the winding operation; m

Fig. 4` is a partial plan view of the tensioncontrolling means;

Fig. 5 is a further enlarged part-sectional side view of the tension-controllingl means, indicating diagramm'atically the movement imparted to 15 the tension-elements during the progress of the Winding operation;A

Fig. 6 is a vertical sectional view through the tension-controlling device taken on line 6--6 of Fig. 5 and showing the eccentric mounting for 20 the adjusting means;

Fig. 4'7 is a vertical sectional view of another form of tension-device adapted to be operated from the improved controlling device;

Fig. 8 is an end view of the tension-device 25 illustrated in Fig. 7;

Fig. 9 is a side view of another modiiied form of tension-controlling device;

Fig. 10 is a vertical sectional view of the same taken on line lll-l0 of Fig. 9; v v 30 Fig. 11'is a side view of a modified form of plunger-rod for connecting'the tension-elements and controlling means; and

Fig. 12 is a similar view of still another modified form of plunger-rod.

The present invention is-concerned particularly with winding machines in which the windingspindle is rotated at a constant rate of speed so that during the winding of a package thereon the speed of draft or rate of linear movement of the yarn progressively increases with the increase in circumference of the wound mass. It `is well known to those skilled in the art that in winding on machines of thisY type as the winding progresses. and the package increases in circumference the yarn must feed thereto at an .accelerated rate or with an increasing speed of draft and, therefore, unless controlled, the tension on the running yarn -will be augmented or increased from this cause. It has heretofore l been proposed to provide means for gradually relieving or reducing the applied tension on the yarn during the growth oi the package and the present invention is distinguished from such known devices in that it provides a positive concontrolling means is also shown, by way of ex' ample, as applied to use with a tension-device of the type illustrated and described in my prior application for Letters Patent, Serial No. 224,386,

led August 1l, 1938; but it is to be understood that the invention may be used for controlling the operation of tension-devices of other types wherein the tension-elements are progressively Aeo separated, one from the other, or the pressure of one against the other relieved during the winding or like operation..

Fig. 1 of the drawings illustrates a well-known type of windingmachine comprising a main frame 2 having upper bearings for a rotary wind- `ing spindle 3 and lower bearings for a' cam-shaft 4. Cylindrical or conical packages may be wound on the spindle 3 by traversing the yarn longitudinally thereof through the means of a reciproeating thread--guide 5 which is supported on a swinging frame 6. The thread-guide 5 is conneetedv to a traverse-rod I slidable in grooved bearings in the traverse-frame B and reciprocated by a helical cam, not herein shown, which is rotated by the cam-shaft 4. The traverseframe 6 is pivoted on the ends of the cam-shaft.

4 to adapt the thread-guide 5 Icarried thereby to move outwardly away from the winding-spindle 3 as the package is built up thereon. To counter- Ibalance the traverse-frame Iiv to maintain the thread-guide 5 bearing against theA package the frame is preferably provided with a weighted arm V9 depending therefrom in the-manner of a pendulum. As a further means for resisting the action of the package to swing the guide away from the spindle 3, differential pressure-means are'employed, but these are not herein shown ince they form no part of the present invenion.

The tension-device I5 is shown and described in detail'I in the above mentioned application for United States patent, and is therefore described herein only briey as relating to'the operation of the improved tension-controlling means. Suiiice it-tostate that a pair of concave-convexdisks I6 and I1 are rotatably mounted on a tubular or sleeve-like spindle I8 fxedly held in a hub .I9

. formed integral with a tension-bracket 20. The bracket 20 has a curved arm 2l which is attached to the side of the winding machine frame 2 by means of screws 22.

The tension-disks I6 and I1 are preferably circumferential recess `42 in the thimble 34 and constructed from sheet-metal and formed to substantially saucer-shape with their main radial portions having flat faces adapted to bear against the strand s drawing therebetween. Radially outward beyond their nat portions the tensiondisks I6 and I1 are ared laterally in arcuate shape in cross-section and terminate inY -radial flanges-forming at rims 23 and 24 substantially parallel with their main at faces. Y l

The means for 'applying pressure to the disks .I6 and I1 to force them toward each other tov cause them to bear against the strand may consist in a flexible diaphragm 25 for each disk con- Vstructed from suitable resilient material such as rubber, ber or the like. The diaphragms 25 are.

of disk-like form, as shown in Fig. 3, and of substantially the same outside diameter as the tension-disks I6 and II to adapt them to bear against the rims 23 and 24 of the latter in the manner illustrated in Fig. 2. Theidiaphragms 25 are formed with axial holes to adapt them to be supported onthe central spindle I8 and pressure y is applied tothel sides of the diaphragms adjacent their centers to cause them to yieldingly press against the outer rims 23 and 24 of the disks I6 and I1.

The tension-device illustrated `in Figs. 7 and 8 diiers from that described above only in the form ofthe pressure means employed therewith. In this case the pressure-elements are in the form of spider-like springs 30 slidably arranged on the Ameans comprises a plunger-rod 33 which is slidable in the axial bore of the hollow spindle I8. The rod 33 projects beyond the outer end of the spindle I8 and is threadedto receive an internally-threaded hub or thimble 34 which is screwed thereon and held in adjusted position by means of a lock-nut 35 screwed onto the -threaded extremity of the rod and set up against the hub. The hub or thimble 34 is adapted to engage the side of the outer disk 25, while the inner disk 25 has its central portion bearing against a relatively thin washer 36 abutting the end of the hub I9 in whichthe spindle I8 is held. The thimble 34 is bored axially at 38 to receive the end of the spindie I8 to adapt it-to slide thereon. It will thus be observed that when the plunger-rod 33 is slid to the left, as' viewed in 2, the thimble 34 willbear against the central portion ofthe outer diaphragm 25 to 4exert pressure on both diaphragms whereof to cause them to yieldingly press against the rims 23 and 24 of the two disks I 6 and I'I. As the pressure of the thimble is increased the diaphragms will be flexed to cause them to be bowed inwardly toward each .other to a slight extent.

` With the form of tension-device shown in Figs.'

7 and 8 'the spring-elements 30 are exed in the y same manner to cause them to be bowed inwardly toward each other to a slight extent. The inner spring-element 38 maybeheld against rotation by a pin 40 -in the bracket 20 engaging the side of voneof the radial arms ofthe element. Rotation of the outer spring-element 38 is yieldingly resisted by a wirering 4I frictionally held in a.

pr\ovided with an arm 43 engaging the side of an arm of the element, the ring permitting the outer. element to creep orrotate slowly to prevent 4 5`at the upper end of the bracket. Fromthe guiding rod 45 the'strand leads across a wire vbail 4 6 and thence through the groovev in the thread-guide 5 to the package being wound.

'Ihe present inventionA relatesv to means for gradually reducing the pressure of the diaphragms 2i or the spring-elements 30, as the case 75 may be, against the disks I6 and I1. This is accomplished by means to be next described which act to slide the plunger-rod 33 longitudinally in the bore of the spindle I8.

Screwed into a boss on the arm 2I of the tension-bracket 29 is a stud 49, see Fig. 4, on which is pivotally mounted a bifurcated lever 5I). The lever 50 has a hub portion 5I for receiving the stud 49 with arms 52 and 53 radiating therefrom and connected at their ends by a cross-Strut 54, see Figs. 4 and 6. The arms 52 and 53 of the lever 56 are'provded with alined holes 56 and 51 for receiving the shank portion of an adjusting stud 59. As shown in Fig. 6, the adjusting stud 59 has an eccentric portion 69 with its side abutting the outer face of the arm .52 while its opposite shank end is headed over in the countersunk end of the hole 51 in the arm 53 to hold the stud.I axially in place and provide frictional resistaneve to its rotation. An enlarged head 6I formed at the outer end of the stud 59 is slotted to receive a screwdriver to facilitate turning the stud when adjusting the position of the eccentricrportion 66 for a purpose to be explained later. The shank of the stud 59 is bored axially to receive the bent end 65 of a wire link 66, see Figs. 4 and 6; The opposite bent end 61 of the link 66 passes through one of a series of holes 68 in a sheet-metal bracket 69 carried by the weightedarm 9 of the traversefrarne 6. The bracket 69 is pivoted on a stud 16 held in a second bracket 1I fastened to the side of the arm 9, see Fig. 1, and forming part of the differential pressure means common to winding machines of the type herein illustrated.. The bracket 69 is provided with an arcuate slot -12 through which passes a screw 13 in a threaded hole in the bracket 1I and by loosening the screw 13 the smaller bracket 69 may be adjusted about the stud 10 and thereafter secured in position by tightening the screw. It'will be apparent vthat during the winding operation, as the package increases in diameter the weighted arm 9 is swung in a clockwise direction, as viewed in Fig. 1, and through the bracket 69 and link 66 the lever 50 will be rocked about its pivot 49 in a counter.- clockwise direction.

The forward arm 52 of the lever '56 is extended laterally, as indicated at 15 in Fig. 4 and the extension provided adjacent its extremity with a threaded hole for receiving the reduced threaded end of a stud 16. Pivoted on the shank portion 11 of the stud 16 between the extension 15 and head 18 of the stud is a sheet-metal lever 80 provided `witha longitudinal slot 8I, the sides of which embrace the eccentric portion 69 of the adjusting stud 59. The slot 8l is continued toVv l the right, as viewed in Fig. 5, in a narrower slot 85 to give resiliency to the upper portion of the lever 480 whereby'to cause the sides of the slot 8I to exert pressure on the sides of the eccentric portion 69 vof the stud 59. In this way the sides of the slot 8I form jaws which engage/the eccentric 60 frictionally to resist turning movement of the stud 59. The lever 8IIl is extended forwardly and laterally in an ear 82 which is provided-g with a hole 83. The plunger-rod 33, previously described as being slidably mounted in the hollow spindle I8 of the tension-devicevIS, isbent upwardly at its end and formed with a rright-angular portion 84 hooked into the hole 83 of the ear 82 on the lever 80. A preferred form of construction of the tension-controllingdevice having been described in detail its method of voperation will be explained next.

Toprepare the machine for winding thestrand spring-elements 30.

s of yarn or the like is drawn upwardly through the guide 44, threaded between the tension-disks I6 and I1, and thence led across the guide 45 and bail 46. The strand is then passed through the thread-guide l5 and its end attached to the tube t or other yarn-receiver mounted on the spindle 3. The tension-controlling device, including the- levers 50 and 80, is then adjusted angularly about the pivot-stud 49 with the bent end 61 of the link 66'inserted in the appropriate holes 68 in the bracket 69. With the parts of the controlling device thus connected the initial tension von the strand s is regulated by adjusting the thimble 34 along the rod 33 to ex the diaphragms 25 or spring-elements 30 to the required degree. That is to say, flexing of the diaphragms adjusts the amount of pressure applied to the rims 23 and 24 of the tension-disks I6 and I1 and thus the initial tension appliedV to the strand s at the start of the winding is' regulated in accordance with requirements.

The controlling 'device isfurther adjusted to regulate the extent of sliding movement imparted to the plunger-rod 33 by the traverse-frameV 6' during the winding of a package and thereby the extent to which the applied tension is reduced. Turning the adjusting stud 59 by means of a screw-driver causes its eccentric portion 69 to swing the lever 89 about the pivot-stud 16. With the eccentric portion 60 of the stud 59 in uppermost position, that is, displaced upwardly 90 from the position illustrated in Fig. 2, the hole 83y in the end of the lever 80 will be positioned in axial alinement with the pivot-stud 49. Consequently, as the connected levers 59 and 80 are swung about the pivot 49 under the pulling action of the link 66 during the movement of the traverse-frame 6 no slidingmovement will be 'imparted to' the rod 33. To effect movement of the rod 33 and thereby a relief of pressure on the tension.

disks during the winding the adjusting stud 59 is turned-in a clockwise direction, as viewed in Fig. 2, toadjust the connected end 84 of the rod.- 33 intoeccentric relation to the raxis of the pivotstud 49. With. the hole 83 adjusted away from the stud 49 in eccentric relation to the axis thereof pivotal movement of the levers 50 and 86 during the winding .operation will cause, theend 84 of the plunger-rod 33 to swing in an arc concentric with the axis of the stud 49'in the manner of a crank-pin, and thus the rod 33 will be slid toward the right to gradually relieve the pressure of the diaphragms 25 against the rims of the tension-disks I6 and. I1.

Referring to Fig. 5, the eccentric portion 6I) of .the adjusting stud-59 is shown as adjusted to lowermost position with the'end 84 vo'vf the plungerrod 33at the maximum distancefrom'the axis of the pivot-stud 49. With this adjustment, when the leversn50 and-80 `are swung upwardly in a counterclockwise direction the endA 84 of the plunger-rod 33 will'be carried therewith in an arc `indicated by the line designated b. At the I start of thewinding operation the end 84 of the rod 33 is positioned'substantially in a vertical piane of the axis of the stud 49 and at thel co`mpletion of the .winding yit will have been moved to the right into the position indicated by the dashline circle. During this displacement of its end 84 the rod 33 is moved toward the vright a distance equal-that'indic'ated by the reference character a and thus thel thimble 34 carried by the rod is shifted axiallyA to a corresponding distance to relieve its pressure on the diaphragms 25 or By the above-explained method of operation of the control-device the pressure of the two diaphragms on the tension-disks I6 and I1 is relieved so thatthe pressure of the disks on the strand s drawing therebetween is correspondingly reduced. It will be understood that this relief oi' the pressure on the diaphragms and the coresponding reduction in the pressure of the tension-disks on the strand is effected gradually and continuously from start to nish of the winding of each package and in proportion to the increase in linear speed or rate of draft of the strandas the package grows in size. In ilne, as the speed of draft of the yarn increases due to the growing diameter of the packagebeing wound the applied tension on the yarn is gradually relieved so that the ultimate tension remains substantially constant or uniform throughout the winding. With the present improved construction and arrangement of the tension-controlling means the strand is delivered to the winding machine or other apparatus under substantially uniform tension during variation in its linear speed.

It will be observed by reference to the drawings that as the end 84 of the plunger-rod 33 moves upwardly along the arc b as indicated inFlg. 5 the rod will tilt upwardly slightly. To permit this angular displacement of the rod* 33 the axial bore of the spindle -I 8 is made slightly larger than the diameter of the rod. To avoid this tendency of the rod 33 to be canted in the ybore of the spindle I8 the rod may be constructedl in two sections as shown in Fig. 11. With this articulated structure of the rod 33 its forward end may terminate in a loop 86 which is pivotally connected to the looped end of a wire link 81 by means oi.' a suitable hinge-'pin or stud 88. The opposite bent end 84 of the link 81 is hooked through the hole 83 in the lever 88 and as the lever swings upwardly the link pivots on the pin 88 without tiltingthe whole rod.

As another means for preventing' tilting o1' the -plunger-rod 33 during the pivotal movement of the lever 88 the rod may be provided at its inner end with a vertical loopv 98 as shown in Fig. 12.` A -pin 9| held in the hole 83 of the lever 88. is

arranged to project through the loop 98 and as the lever swings upwardly the pin will ride vertically in the loop, thereby imparting longitudinal sliding movement to the rod 33 without tilting it.

Figs. 9 and 10 of the present drawingsvillustrate a modified form -oi construction of thev invention. In this embodiment a single leverA 88 is shown as pivoted on a stud 99 corresponding to the stud 49 previously described. The lever |88 is formed with an arm |8| having ahole at its erating link end through which the bent end 650i the op- 66 is hooked. Below the stud 99 the lever |88 is bent laterally and then upwardly as shown in Fig. 10 to form a second arm |82 extending parallel to the arm 8|.` The arm |82 is formed with a vertical slot |83 for receiving the reduced end of an adjusting stud |85 which passes therethrough. The 'shouldered portion of the stud |85 abuts one side of the. arm 82 and A a nut |86 screwedonto the threaded extremity of the stud binds it in adjusted position in the slot |83. Surro ding the shank portion of the stud |85 is the lo ped end |81 of the plunger-rod ,33, the loop being held in place by the headA |88 of the stud. It will be readily understood that ad.-

' justment of the stud |85 in the slot |83 toward and away from the axis ofthe pivot-stud 99 will vary the eccentricity of the stud '|85'with respect to the pivot andas the lever |88 is swung under theI pull of the link 66 the stud |85 will be rocked therewith to impart sliding movement to the plunger-rod 33.

The present drawingsA illustrate the improved tension-controlling means as arranged to operate a particular type of tension-device but it is to be understoody that it may be used with various other types of tension-devices.

It will be observed from the foregoing that the present invention provides a particularly simple yet ingenious means for positively and accurately controlling the pressure on the tension-members during the winding of a package whereby to relieve the tension applied to the yarn as the linear speed of the latter increases. In this'way the device operates automatically to maintain a substantially constant and uniform tension onthe yarn from start to finish of the package.

As a particular feature of improvement in the present invention the tension-controlling device is operated directly from the'winding mechanism in direct proportion to the growth of the package being wound without the use of interposed springs, weights orother unstable elements liable to cause vibration or chatter of the tension-elements and result in uneven tension being applied to the yarn. Furthermore, the improved tensioncontrolling device may be quickly and accurately adjusted to effect a range of action necessary to properly relieve the tension during the winding or like operation;

While the invention is hereinshown and described as embodying several preferred forms of construction, it will be understood that other modifications may be made in the structure and arrangement of the'parts of the device and in the method of applying it to use without departing from the spirit or scope of the invention. Therefore, without limiting myself in this respect, I claim:

l. A1 tension-device for winding and like machines comprising a member adapted to bear against s .strand of'yarn to resist its draft, resilient means acting against said tensionmem ber, means acting against the resilient means to maintain it under compression, a rockable lever, an adjustable member fixed on the lever and rockable therewith as a unit, and a link connecting the member on said lever to act against the compression means, said adjustable mem- ,.ber being movable on the lever for adjusting the connection of the link with the lever eccentrically of the pivot of said lever.

2. A tension-device for winding and like machines comprising a member adapted to bear against a strand of yarn to resist its draft, resilient means'acting against said tension-member, means acting against the resilient means to maintain it under compression, a4 member rockable about a fixed pivot, an arm pivoted tothe member at a distance from'its pivot, a link connected to thel arm at one end and connected at its opposite end to said compression means, and means for varying the' position` of the arm on the rockable member to adjust the endof thelink eccentrically of the pivot of the rockable member.

:loV

csf

3. A tension-device forwinding and like ma- I points, said last-named means'being adapted to l means acting against said tension means, means adjust the second lever angularly with respect to the ilrst lever, and means connecting the second lever to the compression means.

4. A tension-device for winding and like ma- 'chines comprising a .member adapted to act against a strand of yam to apply resistance to its draft, resilient means acting against said tensionmember, means for maintaining said resilient means under compression, means adapted to shift said last-named means to vary the compres sion of the resilient means comprising a rockable pivoted to the first lever, an eccentric rotatable on one lever and engaging the other lever at'a distance from their pivotal connectionand adapted to adjust the relationship of said levers, and means connecting'the second lever with the compression means.

6. Ina tension-device, the combination of a member adapted to act` on a strand of yarn to apply resistance to its draft, resilient means acting against said tension-member, means for maintaining said resilient means under compression, an element rockable about a fixed axis, a second element connected to and adjustable relatively of the first element, a link connecting the.l

second element with the compression means, and

` eccentric means .acting between the first element and` second element for adjusting their relationship to vary the extent of movement of the link as said elements are rocked about the pivot of the first element. f

'7. A tension-device comprising a member adapted to apply resistance to a strand of yarn feeding thereacross, resilient means acting against said element, means for maintaining said resilient means under compression, a pivoted lever, a second lever pivoted to the first lever, one of said levers being provided with a slot, an eccentric on one lever engaging the slot in the other lever and operable to adjust'the relationship of said levers, and means connecting the second lever with the compression means.

8. A tension-device comprising a member adapted to apply resistance to a strand of yarn feeding thereacross,-resilient means acting on said tension-member, means for maintaining said resilient means under compression, a pivoted lever, a second. lever pivoted to ythe first lever and formed withl a/slot at one side of its pivot, an,

eccentric on the lfirst lever in Yfrictional engagement with the sides of the slot in the second lever, means for rotating said-eccentric to adjust the position of the second lever with'respect to the first lever, and means connecting the secondv lever with the compression means.

' 9.' A tension-device comprising means adapted to apply resistance to the draft of a yarn, resilient for maintaining said resilient means under comlpression, a rockable lever, a member pivoted to the lever and formed with resilient jaws at one side of its pivot, an eccentric on the lever frictionally engaged by the resilient jaws of said member, means for turning the eccentric to adjust the position of the member in relation to the lever, and a link connecting said member with the compression means.

10. In a winding machine, the combination of a winding-spindle andl thread-guide adapted to recede one from the other during the winding of a package, a frame for movably supporting one of said elements, a pivoted member, a member movable on the pivoted member, a link directly connecting said pivoted member with the frame to adapt it to be rocked thereby, a tension-device forapplying resistance to the draft of a yarn feeding to the package being wound, resilient means for actuating said tension-device, means `ior maintaining said resilient means under compression, a link connecting the member movable on the pivoted member with the compression means,

and means for varying the position of the movable member on the pivoted member to adjust the connection of said last-named link on the movable member toward and away from the pivotal axis of the pivoted member.

11. In awinding machine, the combination of a-winding-spindle, a thread-guide for traversing yarn on the spindle to wind a package, a traverseframe for supporting the thread-guide to adapt it to recede from the winding-spindle, a tensiondevice for applying resistance to the draft of a yarn feeding to the package being wound, resilient means for actuating said tension-device, means for maintaining said resilient means under compression, a pivoted member connected direct- 1y to the traverse-frame to be rocked during the movement thereof, an adjusting member carried by said pivoted member, a link connecting said adjusting ,member with the compression means, and eccentric means for moving the adjusting member to adjust the link toward and away from the pivotal-axis of the pivoted member.

12. In sii-:winding machine, the combination of `awinding-"spindle, a thread-guide for traversing yarn on the spindle to Wind a package, a traverse-frame for supporting the thread-guide to adapt it to recede from the winding-spindle, 4a

tension-device comprising a member adapted to-V act against the yarn feeding to the package, resilient means acting against the tension-member, means for maintaining said resilient'means under compression, a lever connected to be rocked by the traverse-frame during the recessionv of the thread-guidefrom the winding-spindle, a mem- Aber pivoted to the lever, means on the lever engaging the member at a distance from their pivotal connection and adapted for adjusting the position of said member on the lever, and a link connecting Ysaid member with the compression 13. In a winding machine, the combination of a windingspindle, a thread-guide for traversing yarnon the spindle to wind a package, a traverseframe for supporting the thread-guide to adapt ,it to recede from the winding-spindle, a tension- `device comprising a memberl adapted to act against the yarn feeding/to the winding-spindle, resilient means acting against thetensionmem ber, means for V`maintaining said resilient means under compression, a lever connected to be rocked by the traverse-frame during the recession .of the thread-guide fromk the winding-spindle, a mem'berpivoted tothe lever, an eccentric connecting the member and lever at a distance from l their pivotal connection and adapted for adjusting said member to various positions with respect to the lever, and a link connecting said member with the compression means.

14. A tension-device for winding machines comprising a member adapted to bear against a strand of yarn to resist its draft; resilient means acting against said tension-member, means acting against the resilient means to maintain it under compression, apivoted member, a member mov-` v pivoted member.

'able on the pivoted member, ay link connecting the movable member with the compression means,

and an eccentric for adjusting the movable mem- HAROLD WOOD HITCHCOCK.

Images