US2615652A - Yarn package support - Google Patents

Description

oct. 2s, 1952 J E JOHNSON 2,615,652

YARN PACKAGE SUPPORT Filed March 2, 1950 2 SHEETS- SHEET 1 A TTORNE Y Oct. 28, 1952 J. E. JOHNSON 2,515,652

YARN PACKAGE SUPPORT Filed March 2, 1950 ZSHEETS--SHEET 2 v v v v v v v v v,

INVENTOR. JAMES Ln/000 JOHNSON WM AI/ ATTORNEY Patented Oct. 28, 1952 James Elwood Johnson, Cleveland, Ohio, assignor to Industrial Rayon Corporation,` Cleveland, Ohio, a corporation-of Delaware ApplicationMarch 2, 1950, Serial No. 147,255

This invention relates to a yarn package support and securing means, and more particularly to a yarn package support employed in a Creel that is adapted to readily secure and hold a yarn package wound on a core or spool against `displacement.

Yarn packages that are wound on hollow cores in the form of cylinders or cones or spools are generally supported on stationary shafts or arbors held in brackets that are attached to vertical supports of creels and secured thereon by an internal or external locking means. The yarnv packages are secured in position so as to prevent a malformed package from being pulled 'off during a yarn withdrawing operation. Low denier yarn will readily breakduring a creeling operation due to some fault in its initial winding while'yarn packages having yarn of about eleven hundred denier and over will not breakk as easily. A malformed package of heavy denier yarn can be pulled off its support unless it is securely heldr because of the greater tensile strength of such yarn, and such a yarn package which mayweigh about four pounds and more, can damageadjacent equipment aswell as itselfwhen it is suddenly pulled off its support.

`3 Claims. (Cl. 242-130) is substantially well centered without, generally, the need of lanother centering device on the arbor. f f

A means for compressing the core holding and securing'sleeve is advantageously positioned on the exterior of a mounting bracket and it is operable therethrough. The compressing means comprises a cam to which the yarn package/supporting shaft or arbor is; connected at one end,

and when the arbor is drawn against the bracket the resilient sleeve is axially compressed and l ltransversely expanded. The yarnpackage support is also adapted ,to be adjusted so as to accommodate different length packages by a change in the position of the core holding and expanding sleeve on the arbor.

This invention Will be explained in greater detail in the following specification and in the accompanying drawing, Where:

Figure 1 represents in elevation a pair of yarn packages supported in a creel; p n

Figure 2 is 'a plan view of Figure 1 showing locked and unlocked positions of the core holdingl and securing means of this invention;

` Figure 3 represents, in elevation, the yarn pack- "age holding andsecuring means;

Various locking devices have been proposed for n securing a yarn package to its supporting shaft or arbor. factory their use is generally limited to small packages; or they are not adaptableto different package shapes; or that they are not easily oper- While some locking devices are satisn y 30 able so as to readily secure or release a yarn 'n package; or that the locking and securing devices interfere with the withdrawing yarn. This invention provides for a yarn package support and securing means in a creel that is adapted to support and to securely hold a package wound on a core having the shape of a cone or a cylinder.

The yarn package support of this invention secures a core against displacement by frictionally vholding means tends to securely grasp the inner core surface since the material of which it' is composed flows so as to conform to the shape oi the core. Further, whether the core is a cone or a spool, if the size of either falls Within the expanding limits of the expansible sleeve, then each is adapted to be securely held. Another advantage is that a core when locked into position Figure4, taken across lines 4--4 of Figure 3, represents the adjustable sleeve portion of the yarn package arbor support which permits a different positioning ofthe expandable sleeve on the arbor.

kFigure 5 is a section of Figure 3 taken across lines 5-5;k

Figure 6 is al partially cut-away view showing a partial large cone-shaped yarn package, and a smaller cone-shapedyarn package secured and supported against displacement on the same arbor; land n i Figures 7 and 8 represent partiallyy cut-'away views of cylindrical yarn packages, and the package supporting and securing means in adjusted position.

n Inthe drawingy yarn packages vvI0 in the form of cones are supported on vertical posts I 4 of a creel. The cones I0 are positioned about longitudinally 'movable stub shafts or arbors l2 supported in the ereel support or brackets I3. A creel may have several hundredand more packages. The yarn from the cones I0 is withdrawn over the free end of the packages through various guiding and tension devices (not shown) generally onto a warper creel or to a loom. Further, since yarns are generally axiallywithdrawn and if a package is imperfectly wound, it is subject to being pulled off when the yarn is 0f heavier denier.' A suddenly pulled package endangers adjacent equipment, the remaining yarn on the packagey and it may also endanger the operator of the creel. Locks or package securing means that are easily operable and out-of-the-way, of a simple construction, are essential.

The package on the right of Figures 1 or 2 is shown as being locked to the supporting arbor I 2 by means of the cam I6 which is eccentrically pivoted about a pivot I8. The cam I6 is operable by the handle I'I and since it is secured to the arbor I2, it is adapted to longitudinally or axially move the arbor in the bracket I3 when caused to rotate against the stationary cam face or reaction face 20 of the mounting bracket I3. Thus, when the handle is in the downward position the arbor is drawn toward the bracket |3 and the yarn package I becomes locked to the arbor, and when the handle I1 is in an upward position the yarn package I0 then is in a released position.

As shown in Figure 3 the arbor I2 extends through the bracket I3 and it has about it abutting sleeve sections 2| and 22. The sleeve section 2|, as shown in Figure 4, is removable for adjustment purposes, while sleeve section 22 is fully cylindrical and it is adapted to be slidably located about the arbor. Ahead of .sleeve section 22 is a thrust washer. 23, a compression spring 24, a Washer 26, then the compressible and transversely expansible sleeve member 25. The member 25, in turn, is compressed Aby the thrust collar 21 and a spring washer 29 which rest in a groove at the end of the arbor or shaft I2. Thus, as shown in the dotted lines of Figure 3, when the handle I'I of the cam I8 is swung downwardly, the shaft I2 is pulled rearwardly through the supporting bracket I3 to effect a compression and an expansion of the resilient sleeve 25 against the spring 24 and the section sleeves 22 and 2| which are fixed in position and which abut the bracket I3.

As shown by dotted lines in Figures 3 and 5, the expansible sleeve 25, which can be of resilient material such as rubber and the like, upon compression tends to expand in a transverse plane, and upon release to its previous form. Upon compression the sleeve 25 increases in diameter and thus i it frictionally locks itself to an inner surrounding core surface. The expansion of the sleeve 25 against and about the interior of the core firmly secure the core to its arbor. The expansion, and the ability of a rubber-like material to flow is generally substantial so that at one position it can accommodate a cone-like package as well as cylindrical package having substantially similar diameters.

Further resiliency to the core locking means is added by the use of the compression spring 24 which prevents injury to the interior of a core by absorbing any excess expansion in the direction of the transverse plane over the amount that is necessary for an adequate holding of a core. The compression spring 24 also tends to maintain at all times a substantially constant pressure against a core by the expandable locking member 25 which, as stated hereinbefore, conforms to the contour or shape against which it bears. The expansible member 25, in addition to securely holding a core of a yarn package, also tends to center the yarn package about the arbor I2.

The same arbor can be used, if desired, for various sized packages. As shown in Figure 6 the arbor I2 is adapted to hold and secure a small cone or a larger cone. The arbor, of course, must 4 be of a length so as to accommodate both sizes. The larger of the two will be secured more forwardly by its cone than the smaller; each, however, is just as securely held, and substantially firmly centered.

Should smaller cones be used, or cylindrical yarn packages having cores of different diameters, or packages whose length may be such that it is desirable to support them at substantially their mid-point the resilient sleeve member 25 can be readily moved from its forward position as shown in Figure 3 to somewhere nearer the supporting bracket I3. The removable sleeve section 2| is taken from about the arbor I2 by withdrawing the clamping section 30, then moving the sleeve section 22 toward the bracket I3. The removed section 2| is then placed ahead of the locking washer 29. The expanding member 25 will, then. upon an actuation of the cam I8 lock and securely hold a core at some desired position within a core other than at the end, as shown in Figures 7 and 8.

Since there is a tendency for thevexpanding sleeve 25 to pull the core back slightly, it in instances is advantageous to provide a4 backing plate or washer 3| that is larger than a core diameter. The backing washer 3| serves to better center the package bout the arbor where it is supported only by the expansible sleeve 25.

A supporting arbor of the type herein described is readily adjustable for various types of packages, and it is long-lasting since overexpansion of the resilient member 25 is always absorbed by the compression spring 24. The compression spring regulates and keeps consistent the compression of the resilient member 25 against a core interior. Further, the parts comprising the arbor need not be manufactured to close tolerances since the spring 24 can absorb any differences in the length of such parts. Tension in the spring can be readily varied by the use of additional washers. As shown the arbor is readily adjustable by the simple expedient of removing a sleeve section from the one side of the expansible member 25 to the other. The support thus becomes readily adapted for different types of packages. If desired, a threaded nut can replace the thrust collar 21 on the forward end of the shaft |2'so that in lieu of using the removable sleeve 2| the nut could be threaded into thrust position. The shaft I2 would, of course, have to be threaded for at least the length of the sleeve 2| which would be removed.

I claim:

1. A yarn package holding and securing mechanism comprising, an axially movable shaft, a support for said shaft, a yarn package core securing means being axially compressible and transversely expansible and positioned about said shaft, said securing means being adapted when transversely expanded to hold and secure said core to said shaft, adjustable means about said shaft for adjustably locating said compressible and expansible means, and cam means reacting against said support for transversely expanding said compressible means against the inner` wall of said core.

2. In a creel, a stationary support for a yarn package, a longitudinally movable shaft in said support, a cam means positioned exteriorly of said support for moving said shaft, a resilient core securing means positioned about said shaft adapted upon axial compression to expand in a transverse direction, sleeves about said shaft for locating said resilient means on the shaft and for providing reaction when said resilient core securing means is compressed by said cam means, and a compressible element about said shaft against which said resilient core securing means is compressed.

3. In a creel, a stationary support for a yarn package, an axially movable arbor in said support, a cam means positioned exteriorly of said support and being attached to one end of said arbor, said cam means by pivoting on said arbor and against said support being adapted to axially move said arbor, an axially compressible and transversely expansible core securing means positioned about said arbor, adjustable sleeves about said arbor for locating said transversely expansible core securing means and for providing reaction for the axial compression of said transversely expansible core securing means, and a compression spring about said arbor for opposing the axial movement of said arbor and for predetermining the axial compression/and transverse expansion of said expansible core securing means.

JAMES ELWOOD JOHNSON.

REFERENCES CITED Thefollowing references are of record in the file of this patent:

UNITED STATES PATENTS

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