US1038971A - Cop or bobbin. - Google Patents

Description

I that of the coils at the base end. As before the body.. portion having a taper slightly greater than the taper of the surface ofthe tubeor spindle on wliich it is wound. By this method the cop is formed so that the amount of arn surrounding the tube at its outer .smal end is Slightly less than the amount at the base end where the tube is larger. This provides that the constrictive action of the. coils of winding at the outer end of the bobbin will not be so great as stated, it ismore ditlicult to maintain the formation ofthe layers of winding on a small diameterl support than on one of relatively large diameter, and bylesseningthe constriction of the mass aty the' point'wliere.

there is the greatest tendency for the coils to slip and be displaced I provide 'a more stable formation and the cop is less liable to be distorted 0r damaged.

In Fig. 1, A represents the winding spindle and a. is the tube of paper or fiber on l .which the cop is wound. The first layer of winding b is laid with a traverse extending from a: to y, and this traverse is maintainer` uniform in length throughout the whole building of the cop. The next layer of winding c is, woundl with the traverse stepped slightly forward so that itsvend overlaps the outer end of the layer b, and the layer d 'overlaps the end of the layer c in the same manner.' As the yarn builds `up with each layer overlap ing the one previously wound,

the use Vof mechanism actuated through contact with the yarn wound on the spindle and operating to feed the threadguide along the traverse-bar through which it is reciprocated A common form of such a device consists of a contact wheel or friction disk having its periphery adapted to bear on the winding and arranged to rotate a nut which enga es threads on the traverse-bar. For buil ing theheel of the cop various devices have been used in the art, some of which operate 4in connectionwith the contact wheel above linentioned, and others operating independently thereof. -One of such means is shown and described. in the United States Patent No. 940,489, granted to Simon W. Wardwell November 16th, 1909. vThe arrangement of this part of the mechanism isnot essential to the -present invention, however, and need notbe described -i'n de'- tail.

i fc5 vThe present invention contemplates only the building of the body portion of the cop, and'fthe essential mechanism for this part of they winding isk shown in Fig.- 3. This consi-sts of a. thread-guide g carried' on a holder lor arm i'niounted on the traversebar 2' which reciprocates longitudinally of the Winding spindle A. The holder k is of bifurcated .form-and between its two exten*- sions or legs is a nut j'oii which is mounted the contact-wheel or friction disk la. The traverse-bar ,z' is formed with eccentric threads Z and the nutjis internally threaded to engage thetlireads I. A wire spring fm,l engages a flange on' tlie vwheel lc to press the nut into engagement with the threads Z. By pressing the Wheel v in the Opposite direction the threads are released so that the' wheel and the thread-guide holder can 80 i.

be adjusted along the traverse-bar to set the thread-guide in position to start the winding of a new cop. In Fig. 3 the threadguide g is shown at the rear end of its traverse, and in this position the contact wheel bears on the base of the cone on which the body of the cop is to be built. Each time the thread-guide returns to its rearmost position, when traversed by the bar z', the wheel la will contact with the outside diameter of thecop and the rotation of the latter wil? cause a slight rotation of-tlie Wheel. The rotation ofthe wheel lc causes the nut j to.

.feed along the bar z' and-the thread-guide is thereby' moved a slight distance outward 95 along the winding spindle in the direction p indicated by the arrow.. In other words, at each tra-verse of the thread-guide the wheel v7c contacts with the winding at its point of l largest `diameter lto gradually feed the 1Q() thread-guide outward along the' winding spindle A. This action causes the guide to lay the yarn in the superimposed concentric,

conical layers, indicated by f, f, Fig. 1,' and the body of the cop is built out to the required'length and terminates in the pointedV nose from which the yarn delivers.

I'Ieretofore', in all winding systems oper-` ating on this principlelhe 'axis of the winding spindle A is arranged parallel to the I traverse-bar. In some cases, the 'winding spindle' is reoiprocated instead of the travemebar, but with', either arrangement the path of reciprocation is always in a straight line. the cop with 'a cylindrical periphery, as indicated by the dot-and-dash lines -zin Fig. 1. iv

In my present improvement I build the body of the cop with aslight taper, prefer- '12cably a little vgreater than the taper vof thee,- su'rface on which'the'winding is performed; and to provide for this it is necessary that the contact wheel which engages tlie periphery of the cop shall' travel in a plane Ain- 125 clined to the axis 0-0 of the winding spindle. v .l

Any suitable arrangement mightbeused for'causing the contact wheel to move out= ward in a'path inclined to the axis of the 13G IThis results in building the body of 115 nosemi .torni of such an. arrangement. W'itb the.

. mechanism as here shown the traversebar is icrn'ied in two parts 'i and 2. The main portion 2 of the bar reciprocates to a plane parallel to the axis of the Winding spindle, and the prtion e' is swiveled at 7) so that its outer end can swing in toward the axis of the spindle. At the outer end of the portion z' I provide a swiveled bearing n which is otlset from t-he plane ont the bar portion r.he dot-and-dash lines r indicate the position lthe traverse-bar would assume if it avere reciprocated ina straight line parallel to the axis of the winding spindle, but as shown by the full lines'the bearing a is. set in toward the axis of the spindle so that the bar e' takes a position. inclined to the axis ot the Winding spindle.

It will be evident, ofcourse, that as the inner end of the bar e' moves out in a plane iti parallel to the axis ot the spindle the inclination of the whole bar z' 4will be increased slightly as the guide moves outward, but this is not: material because the contact ovlieel fr only contacts with the Winding 'when the tra verse-bar is at the rearward eX- tent o t' s traverse. '-lhatis, the portion of the traversebar,will always be in a position inclined to the axis of the Winding spindle on which the cop is Wound when the friction Wheel lu is contacting with the wii'iding, so that the points of contact of the wheel it' with the cop are maintained in a plane inclined to approach the outer' end of the Winding; spindle. As illustrated graphically in Fig. 3, the dist? o :e s will beslightly than the distance i?, and as shown in Fig.-

l the distance a will be less than the distance o, so that the thickness of yarn at the cuter end of the cop 1Where the ldiameter of the tube is smallest will be less than the thickness oi the yarn at the inner end Where the diameter of the tube is rela vely large, and, as previously pointed out, the 'coils of winding will have less constrictive torce at the outer end of the cop than at the inner endA There is another advantage in building the cop of this Atorni, in that the taper ot' the layers ismaint-aned at substantially uniformly the same angle throughout the buildin@ of the body of le cop. As shown by tirador-andasse unes g in. Fig. 1, if the cop is built with. a cylindrical body, and the traverse remains uniform throughout the whirling, the taper of the layers will change somewhat trom one vend of the cop to the other. That is, the nose of the cop will be more'blunt or obtuse than thc taper of the first layers which. are deposited. Such variation in the angles of the several layers results in a disadvantage which is now minted out. been determined liar winding the separate imam this annie .must- -be maintained .After the proper angle hasthroughout the Whole body of the cop. Otherwise, .ifr the layers gradually .become steeper the yarn `Will not hold its position so well and is more liable to become loosened and Slough olf at the point of the nose of the cop.

In my improved cop the angle of inclination of the layers of winding is never allowed to become steeper `as the winding progresses, but on the contrary the taper becomes less and less as the body is builtv out. rlhis provides that there will be less tendency for the coils of Winding to slip oft of the conical nose at the outer end ot the cop and therefore the mass becomes more stableand less liable to breakdown or be distorted.

The above described method of winding the cop has been found advantageous with cert-ain. classes of materials which are especially diliicult to wind. As before stated, there is a greater tendency for the mass of yarn to become disarranged at the outer ornose end of the cop than at the base end. By building the cop with a less volume of yarn at the outer end of its body this tend ency is overcome and the cop made more stable and less liable to be deformed. With my new form of cop it is possible to wind materials which will not build up a suit-. able package With previously known systems of winding, and an improved product is produced which is better adapted for use in the shuttle.

In Fig. 2 I have shown my improved form of bobbm wound on a wooden tube fw, the shank owhich is slightlyk tapered., This form of tube has a conical butt to on which the first layer 'of yarn f is deposited and succeeding layers f2, f2, etc. are wound in loo concentric conical planes. The dot-and-'dash v Alines show the conformation of the usual style of bobbin Wound with a cylindrical body portion and illustrate the difference in taper in the present system of building the bobbin.

It will be understood that the taper of the body of`my new cop or bobbin is not determined by the taper of'the tube or support on which it is Wound, but the body is built with any taper as best adapted to the requirements of the material being wound. It

will also be evident that a cop or bobbin might be Wound on a .straight .or cylindrical tube with its' body portionftapered as above described. y

I do not herein claim the means or mechanism for building my improved cop or bob- 1 bin, as the same forms the subject matter for a separate application, Serial No. 545,434, filed'February 23d, 1910. Thefpresent invention is .limited to the improved `form of w Co shown and described,

hat l. claim is: 1. A tourer bottin Wound ou a: tapered support and having an extended body portion consisting of coniforin layers of uniform length and terminating in a conical nose, With said body portion tapering from its base to the nose with a .greater taper than that of the support on which the bobbin is Wound.

'2. A cop or bobbin having an extended body portion consisting ot eoniforni layers of uniform length and terminating in a conical nose, with said body portion tapering from its base to the nose and inclined to the surface on which the bobbin is Wound.

3. A cop or bobbin Wound with concentric, coniforni layers of yarn of uniform length superimposed to forni an vextended body portion with a tapered periphery and a conical delivery end, said body portion tapered so that its periphery is nearer the surface of the tube on which the bobbin is Wound at the outer end of the bobbin than at the base end.

4. A cop or bobbinfwound on a tube With concentric coniforrn layers of yarn of uniform length advancing progressively to form the body of the cop, the edges of the successivelayers forming atapered periphery'on the body'with said periphery nearer the surface of the tube at the outer end of the cop than at the base end.

5. A cop or bobbin having an extended body portion Wound with all the layers of the same length and terminating in a conical nose, With said body portion tapering from -its base to the nose so that the thickness of the yarn at the outer end of thecopfis less than at the base end. ,v g 2 v- G. A cop orbobbin Wound on a support, with an extended body portion consist-ing of coniforin layers of uniform length an terminating in a conical nose, Wit-h 4said body portion tapered from its base to the nose to provide a less thickness of the yarn around the outer end of the support than at the base end.

71A cop or bobbin having coniformedges oit' the. successive layers forming ac slightly tapered periphery on the body and the angle of inclination of the' layers decreasing in a steepness from the base to the nose of the cop.

In testimony whereof I affix my signature in presence of two Witnesses( y CLAES RYDEN- l/Vitnesses:

ARTHUR A. ARMING'ON, GRACE lV. BROWN;

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