US2569094A - Textile cone - Google Patents

Description

Sept. 25, 1951 c. K. DUNLAP 2,569,094

TEXTILE coma Filed Aug. e, 1945 um I g I 3nventor CHARLES K Dl/IVL/YP Patented Sept. 25, 1951 assume 7 TEXTILE coin:

Charles K. Dunlap, liartsville, s. 0., m... to Sonoco Products Company, a corporation of South Carolina Application August 8, 1945, Serial N0. 609,08.

1 Claim. (CL 242-122) This invention relates to textile cones for supporting yarn packages and the like, and more particularly to a textile cone provided with means adapted for securing a yarn package against slippage on the cone.

It is common practice in the textile industry to use conical cores, particularly paper cones such as are contemplated by the present invention, to dispose yarn or the like for feeding into warping and other textile machinery. The yarn is disposed for this purpose by winding it on the cones so that a body of yarn of substantial size commonly referred to as a yarn package is built up on the cones. The winding operation is carried out on a machine which includes a traverse mechanism adapted to lay the yarn windings on the cone according to a helical pattern. the traverse mechanism reversing as each end of the cone is reached so that the helical winding pattern is formed in both directions on the cone and the yarn forms a loop at the end portions of the cone each time the traverse mechanism reverses to change the direction of winding.

It is well known that particular diificuity is encountered in maintaining these end loops against slippage on the cone during winding and subsequent use of the yarn package. In view of the conical form of the supporting core the individual strands of yarn slip quite readily during winding,. and the completed yarn package has a tendency to slip bodily on the supporting core toward the smaller end and thus disengage itself from the core, unless special attention is directed to precluding this result.

It has heretofore been proposed to formjhe supporting cores with roughened or otherwise configurated end portions so as to provide a gripping surface which would secure the end loops against slippage. More recently, however, as the use of synthetic fibers of relatively large size has increased. such as in the manufacture of rayon tire cord, the problem of dealing with slippage has been accentuated. These large size synthetic yarns, particularly when adapted for use as tire cord, are formed with a hard twist which renders them slick and extremely prone to slip when wound on a conical supporting core. In view of this circumstance. the roughened end portions on the supporting cores have been generally abandoned as a means for preventing slippage and the problem has been dealt with by increasing the tension on the yarn during the winding operation so as to lay the windings on 2 ever, because it renders the winding operation diiiicult and substantially increases the likelihood of defective winding.

In accordance with the present invention I have found that these large size synthetic fibers can be secured against slippage on conical supporting cores by providing the core with knoblike raised configurations or bosses spaced circumferentially at either end of the core in relation to the disposition of the end loops of the windings laid on the core. These spaced bosses provide a configurated pattern at the ends of the cone which is particularly adapted to anchor the end loops securely against slipp e.

My-invention is illustrated in the accompanying drawing which shows a side elevation of a textile cone provided with configurated end portions in accordance with my invention. The manner in which slippage of yarn on conical supporting cores is precluded by raised bosses arranged in accordance with my invention is unique insofar as I am aware. Actual tests with textile cones formed with configurated end portions of all of the previously proposed types with which I am familiar, and even with adaptions of these types, have proved unsuccessful. Slippage was not satisfactorily eliminated in winding the large size synthetic fibers referred to above until the particular configurated pattern formed by arranging raised bosses on the conical supporting cores in accordance with the present invention was conceived.

As illustrated in the drawing. the textile cone of this invention comprises a conical paper body I conveniently formed by winding 9. semi-circular blank upon itself to form a sturdy laminated paper structure held together by a suitable adhesive applied to the paper :blank before winding. The paper body I may be made up from any suitable paper stock, such as kraft stock, and instead of a wound laminated paper body as described above a molded paper body may be used if desired.

After winding the small end of the cone thus formed is preferably turned in and polished n necessary to form a smooth tip portion as indicated in the drawing at 2. The tip portion 2 may be formed, for instance, as described in my prior United States Patents 1,896,135 and 2,014,040.

The spaced raised configurations or bosses are shown in the drawing at 3 and l respectively. These configurations are essentially knob-like the core tighter and prevent slippage in this raised portions which are spaced circumferenmanner. This expedient is objectionable, howtially in rows at each end of the paper body I.

As shown in the drawing the raised portions are circular in form although it may be possible to use other forms so long as the knob-like or rounded characteristics of the raised portions are maintained.

The spaced rows of raised configurations as at 3 and 4 are formed on the paper body I in relation to the disposition of the end loops of yarn windings laid on the paper body I. The effect of this construction is to provide areas on the textile cones having a configurated pattern in which the end loops of yarn windings laid on the cone may secure themselves. The knoblike raised portions have the effect of displacing the end loops slightly to one side or another in the valleys between them as the end loops are laid on the cone. their way between the raised portions and are anchored securely against slippage.

The extent of projection from the surface of the paper body I of the raised portions 3 and 4 will depend somewhat on the particular yarn being worked with. As a general rule they should correspond approximately to the diameter of the yarn to be wound, and in any case should project a distance equal to half the diameter of the yarn.

The raised portions may be formed on th paper body I either by forming them in the semi-circular paper blank before it is wound to form the paper body I or by embossing them in the paper body I after it is formed; or where molded cones are used, by arranging suitable recesses in the forming die.

The spacing and number of rows of the raised.

portions 3 and 4 which are used may be varied as necessary in particular instances. In actual practice, I have found thatgood results are obtained by using three rows of the raised portions 3 and 4, as shown in the drawing, and by positioning them with spacings correspondin roughly to their size.

In most instances, it is advantageous to provide the raised portions 3 and 4 at each end of the conical core, but it is also possible to eliminate the raised portions 4 at the small end of the paper body I, if desired. The principal dimculty with slippage occurs in relation to'the tendency of the end loops of the yamwindings laid at the large end of the conical supporting core to shift toward the'small end. End loops laid at the small end of the supporting core do not slip so readily because they have to overcome the conical taper of the core before slippage occurs.

As a result, it is possible to secure yarn package eifectively on the paper body I by means of raised bosses located only at the large end of the paper body I, as at 3. In some instances, the elimination of the raised portions 4 at the small end in this manner may have some advantage in that the yarn wound on the paper As a result the end loops find body I may be taken oil of the tip portion 2 more easily. However, this eflect has not been found pronounced in actual practice, and in the usual case it is recommended that raised portions be located at each end of the paper body I as indicated in the drawing.

The raised bosses 3 and 4 may also be further conditioned, ii desired, by grinding the surface of the paper body I on which they are located to a velvet surface in accordance with my prior United States Patent 2,219,836. Also, the raised bosses may be strengthened and made more rigid by an internal application of a nontacky. hardening agent, such as a resin, silicate of soda, casein or starch. This is desirable when the cones are intended to be used repeatedly. The hardening agent may be conveniently applied after the raised bosses are struck out in the semi-circular paper blank and before winding to form the paper body I.

I claim:

A textile cone for supporting yarn packages of relatively large size synthetic yarns, such as rayon tire cord, said textile cone comprising a conical paper body having a configurated pattern of rounded, raised bosses spaced circumferentially on its exterior surface adjacent each end thereof in relation to the disposition of the end loops of yarn windings wound on said paper body, said raised bosses being rounded in all directions, being proportioned to project from said paper body at a height equal to at least half the diameter of the relatively large size synthetic yarn to be wound thereon, and being ar-' ranged with a circumferential spacing corresponding substantially to their size, whereby said bosses-are adapted to secure the inner windings of a package of said large size yarn against slippage on said paper body during winding and subsequent use of said package, and the remaining exterior surface of said paper body being smooth and uninterrupted whereby the inner windings of said package may be withdrawn easily from said paper body.

- CHARLES K. DUNLAP.

- REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 986,379 Gess Mar. 7, 1911 2,219,836 Dunlap Oct. 29, 1940 2,273,373 Perry Feb. 17, 1942 FOREIGN PATENTS Number Country Date 16,204 Great Britain Apr. 27, 1911 of 1910 457,553 Great Britain Nov. 30, 1936

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