US2197847A - Cross-wound package - Google Patents

Description

April 23, 1940. c A 2,197,847

CRO S S WOI JND PACKAGE Original Filed Sept. 7,1934

. INVENTOR. F Charles F.- Damn Patented Apr. 23, 1940 UNITED STATES PATENT OFFICE I Celanese Corporation of Delaware of America, a corporation Original application September 7, 1934, Serial No.

Divided and this application March 6, 1937, Serial No. 129,332

9 Claims.

This invention relates to a device for forming cross wound packages having self-supporting ends such as cheeses, cones, etc. and more particularly to crosswound packages that are uniform. in twist and contain no ends of less twist than the bulk of the yarn.

This application is a division of my application S. No. 743,067, 'filed September '7, 1934, now Patent No. 2,096,316.

An object of the invention is the economic and expeditious production of cross-wound packages in which the starting end of the thread or yarn that contains practically no twist up to approximately the amount of twist desired is removed 15 from the package without disturbing the solidness thereof. Other objects 01' the invention will appear from the iollowing detailed description and drawing.

In the drawing where like numbers refer to the same or similar elements:

Fig. 1 is an end elevation partially in section of a part of a take-up mechanism of a cheese winding device with the invention attached thereto.

Fig. 2 is a front elevation of a section of a take-up mechanism and is similar in location of parts to the section shown in Fig. 1.

Fig. 3 is a front view of an attachment for the cheese winding device shown in attached posi- 3 tion in Figs. 1 and 2.

In the twisting and winding of thread it is customary to have a fastly rotating bobbin containing the yarn to be twisted and a take-up package driven slower than the bobbin, thus imparting twist to the yarn. The yarn is wound upon a core by the take-up device, guided thereto in a manner to crosswind the package by a reciprocatlng guide device. The yarn after leaving the bobbin traverses a space allowed for the ballooning of the yarn in the twisting action, and passes through guides, cleaners and possibly treating devices before reaching the take-up mechanism. For this reason and also because the machine as a whole or as a part has not reached the required speed and the formation 45 ofthe balloon is not established, the first yarn or first few yards of yarn coming to the take-up package has not the same degree of twist as that imparted to the yarn after the operation has been 50 completely started and balanced in speed. This length of yarn may be from a fraction of a yard to ten yards in 'length when working on high speed machines with low denier artificial filament yarns. Downward twistlng devices are also employed in the art with the same results.

Formerly this length ofyarn was taken up by the take-up package wound thereon in the same manner as the yarn of the desired twist. In warping, weaving, knitting and other textile operations this end of yarn would be fed to said devices and being of a difierent twist than the remaining yarn would result in a defect in the finished product. Further, in unwinding the yarn from the package, this low twist end would. draw the twist from several yards of yarn in an attempt to equalize itself which might amount to as much as ten yards of yarn that could not be used with safety.

By employing this invention this untwisted end may be removed from the package leaving only yarn of equal twists thereon. This is done without materially increasing the work of the twisting machine operator or slowing up the process whatsoever. Further, there is no weakening of the package or any drawing action that might cause tangling or sluffing of yarns on the end of the package.

According to my invention the untwisted or unprocessed end of the yarn is wound on the take-up package core at one end not regularly covered with yarn, then, when the delivery of twisted or processed yarn reaches the take-up package the yarn is automatically taken over by the reciprocating guide and a package formed. The core with its package is then removed from the device and the ridge of yarn at the end, not a part of the main package, is unwound or cut off and the end thus left free is tacked to the core ina suitable manner. This invention is applicable to both the upward and downward twisting device.

This invention is applicable to the winding of twisted yarns of cotton, wool, real silk, flax, artificial yarns or the like wherein a cross-wound package, such as a cheese, or other like package, is desired. The term yarn as employed in the specification and in the claims includes within its scope thread, assemblies or bundles of a number of continuous filaments which may be in parallel relationship or which may be twisted together, artificial bristles, straws, strips of foil, or yarn spun from staple fibres. The yarns may or may not have been previously twisted, coated or otherwise processed.

Although this invention is applicable to any type of yarn, it is of particular applicability to yams formed of substantially continuous filaments. The substantially continuous filaments may be formed in any extruding a cellulose material in a liquid form suitable manner as by through suitable orifices such as the manufacture of filaments containing reconstituted cellulose, regenerated cellulose or organic derivatives of cellulose. Thus the filaments may contain such organic derivatives of cellulose as the organic esters of cellulose and cellulose ethers. Examples of organic esters of cellulose are cellulose acetate, cellulose formate, cellulose propionate and cellulose butyrate, while examples of cellulose ethers are methyl cellulose, ethyl cellulose and benzyl cellulose. I p

The yarns may be twisted .by any suitable mechanism such as those described in U. S. application S. No. 695,963 filed October 31, 1933, or more preferably by a device of the type described in U. S. application S. No. 742,108, filed August 30, 1934. In the drawing, wherein there is an illustration of one embodiment of the invention, those parts not directly related to the attachment have not been shown. However, reference may be made to the above applications for details of the general mechanism.

In the drawing I is a power driven shaft having mounted thereon a cylindrical roll 2 of metal or other suitable materials that may be suitably covered with a friction producing coating 3 such as pressed cork, fibre mat, felt or the like.

A stationary shaft 4 may have mounted thereon an arm 5 having a split bearing 6 the pressure on which may be regulated by the screw I. The shaft 4 is supported from the main frame of the device. Mounted in the end of the arm 5 opposite its pivot is a shaft 8 that supports a core 9 upon which the take-up package is formed. The shaft 8 is held from rotation by a split bearing I held compressed by the screw I I. A handle I2 cooperates with means I3, which does not form part of the instant invention and which is shown in detail in application S. No. 742,108, filed August 30, 1934, Patent No. 2,048,787, for holding the core 9 against rotation relative to the shaft 8, and in operative position to receive the yarn to be wound.

In operation, at the commencement the core 9 or, if the operation has been started, the wound yarn on the core '9 rests on the friction roller 3 and is rotated thereby'at a constant peripheral speed. As the package is being formed the yarn is guided to the package by a reciprocating guide I4 that is fastened or clipped to a reciprocating rod I5. This guide member is of the self threading type. The stroke of reciprocation of guide I4 is slightly less than the length of the core 9 such that the package is formed with from to inch of core projecting from each end of the package. For example, a popular size package may have a core 5 inches long while the actual mass of yarn is only 4% inches long with inch of core protruding from one end. The core may be formed of pressed paper, cardboard, resin-flbre composition, molded resins, molded compounds of organic derivatives of cellulose or similar material and is preferably formed with a yarn holding slot or notch 9' in one end for retaining and gripping the feed end of the yarn until the yarn has built up to a sufficient depth not to slip on the core.

Mounted on the arm 5 and clamped in place by screw II is a bracket I6 having a depending section Il containing an ear I8 on one side and a stud shaft I9 on the other side thereof. Mounted for rotation on the stud shaft I9 is a bearing member having a slide bearing 2I therein adapted to slidably hold a shaft 22. The shaft 22 has fastened at one of its ends a pulley or grooved wheel 23 while the other end is threaded as at 24 for registry with a threaded hole in the ear I8. At the end of the threaded section 24 of the shaft 22 is an abutment member 25 for preventing the shaft 22 from falling out of the slide bearing 2I when the same is in a vertical position by coming in contact with one end of bearing member 20 as is shown in dot-dash lines in Fig. 3.

In operation, the operator first secures the end of the yarn 26, in which a twist was inserted between the rotating spindle 28 and the pigtail guide 29, in the notch or slot 9' in the end 21 of the core 9 on which the yarn is to be wound. The core is then clamped on the device I3 and the yarn placed over the grooved wheel 23 with the threaded shaft 22 on which the wheel is mounted screwed into its innermost position in the ear I8.

The core holding device is then lowered into place so that the core 9 rests on the friction roll 3 which causes the core to rotate and take up the yam., As the yarn is pulled over the grooved wheel 23, the wheel is caused to rotate by the friction of the yarn and this in turn unscrews the threaded shaft from the ear of the bracket. When the shaft is completely unscrewed, the unbalanced load of the wheel and yarn causes the wheel and shaft bearing to rotate on the bearing pivot I9 and fall out of engagement with the yarn as shown in dotted lines in Fig. 3. After the yarn has fallen from the groved wheel it lies in the path of reciprocating guide member I4 which is self threading and immediately picks up theyarn and guides it onto the core 9 to form a crosswound package. The operator may as soon as the yarn is picked up by guide I 4 return the bearing member to a position shown in full lines in Fig. 3 and screw the shaft back into the ear I8 into the starting position ready for the next package.

In this manner the untwisted end of the yarn is wound upon the first section of the core which is usually a half inch in length. The amount of thread wrapped on this section will depend upon the diameter of wheel 23 and the pitch of the thread 24 on shaft 22 all of which may readily be varied to accomplish the desired length of feed not to be included in the finished package. The untwisted end of the yarn is thus wound on a normally exposed or naked section of the core in a completed package. The falling of the wheel 23 guides the yarn over to that section of the core traversed by the guide I4 so that it may be picked up by the guide II unaided by the operator.

When the package has been formed, the same may be removed from the device-by raising the arm 5 and releasing the core clamping means I3- after which the package may be easily slipped off and an empty core maythen be inserted in the device. The package may consistof a solid, well formed cheese of uniform yarn on a core and also a small ridge of windings on the normally naked end of the core. If desired the operator may strip this ridge of windings from the core having just sumcient yarn, to suit subsequent operations, to be reinserted in the notch of the core. This may be done by removing the original end of the yarn from the notch and pulling the windings undone or on from the padkage end, severlng the yarn about a foot from where it crosses in under the main package, rewinding the foot of yarn and hooking the new end in the notch. Or if desired, the operator may cut through all but the last few windings of the auxiliary package or ridge in a stroke lengthwise the core allowing the severed part to' fall off and then u fasten ,the new end in the notch or slot of the core.

Although the above description is primarily directed to thetwisting and winding of yarn it is also generally applicable to any treatment or processing of yarn wherein the yarn is packaged into a cross-wound package such as a cone or a cheese or other package that has self supporting ends. Thus in applying size, lubricant, tints, dyes or other material to the yarn during a winding operation it may be desired not to include in the finished package the uniformly treated starting end that receives too little or too much treatment during threading of the device and the gaining of a speed in equilibrium with the treating means such that the yarn begins to come to the package with uniform treatment.

It is to be understood that the foregoing detailed description and drawing are merely given by way of illustration and many alterations may be made therein without departing from the spirit of my invention.

Having described my invention, what I desire to secure by Letters Patent is:

1. A device for changing the path of running yarns and like materials after a predetermined length of the material has run past a fixed point, said device comprising a wheel adapted to guide and be rotated by the running material, said wheel being somounted as to be capable of movement out of contact with the material, means for restraining such movement during a predetermined number of revolutions of the wheel, and means for releasing said restraining means upon further rotation of said wheel.

2. A device for changing thepath of running yarns and like materials after a predetermined length of the material has run past a fixed point, said device comprising a fixed support, a screwthreaded socket on said support, a spindle screwthreaded to engage said socket, a wheel fast on said spindle and adapted to guide and be rotated by the material, said wheel being urged bodily in a particular direction and being restrained from movement in said direction so long as the spindle is in engagement with the socket and being adapted to move in said direction when rotation of the wheel has unscrewed the spindle from the socket.

3. A device for changing the path of running yarns and like materials after a predetermined length of the material has run pasta fixedpoint, said device comprising a fixed support, a screwthreaded socket on said support, a member'pivotally mounted on said support and urged to swing in a certain direction, a bearing on said member, a spindle in said bearing, said spindle being screw-threaded to engage said socket and thereby to restrain the plvotall'y mounted memher from swinging in the direction urged, a wheel fast on said spindle, said wheel being adapted to guide and be rotated by the material so long as the spindle is in engagement with the socket and in rotating to unscrew the spindle from the socket. v

4. A device for changing the path of running yarns and like materials after a predetermined length of the material has run past a fixed point, said device comprising a fixed support, a screwthreaded socket on said support, a member pivotally mounted on said support and urged to swing downwards, a bearing on said member, a spindle in said bearing, said spindle being screwthreaded to engage said socket and thereby to restrain the pivotally mounted member from ,ing tension to pull the swinging downwards by gravity, a wheel fast on said spindle, said wheel being adapted to guide and be rotated by the material so long as the spindle is in engagement with the socket and in rotating to unscrew the spindle from the socket. 5

5. In a device for processing and cross-winding yarn into a package, the combination with a core, a core holder and means for rotating the core of means, for eliminating the first length of yarn from the package, including a wheel adapted for frictional drive from yarn being taken on the take-up package, a rotating bearing supporting said wheel for moving the wheel from contact with the yarn, a thread shaft driven by said wheel for releasing said rotating bearing support.

6. In a machine for building yarn or likematerial into a cross-wound package, the combination with a package supporting core, driving means therefor and a self-threading traverse guide to lay the material on the core, of means for causing the first part of the material to be wound at one end of said core on a part thereof outside that which the cross-wound package will occupy, said means comprising a guide wheel for the material, means for retaining said wheel in a position to guide the material to said part of the core while keeping it out of the path of the traverse guide against the tendency of the windmaterial into that path, the wheel being adapted to move out of said position 'and out of contact with the material when the retaining means are released so allowing the material to move into said path, and being adapted when in said position to be rotated by the material, the retaining means being released by said rotation.

7. In a machine for building yarn or like material' into a cross-wound package, the combination with a package supporting core, driving means therefor and a self-threading traverse guide to lay the material on the core, of means for causing the first part of the material to be wound at one end of said core on a part thereof outside that which the cross-wound package will occupy, said means comprising a screw-threaded socket fixed to the frame of the machine, a spindle screw-threaded to engage said socket, a wheel fast on said spindle and adapted when the spindle is so engaged to guide the material to saidvpart of the core while keeping it out of the path of the traverse guide against the tendency of the winding tension to pull the material into that path, and to be rotated by the material so as to unscrew the spindle from the socket, said wheel being adapted when rotation has withdrawn the spindle from the socket to move out of contact with the material so as to allow the material to move into the path of the traverse guide.

8. In a machine for building yarn or like material into a cross-wound package, the combinaoccupy, said means comprising a screw-threaded socket fixed to the frame of the machine, a member pivotally mounted on said frame, a bearing on said member, a spindle in said bearing, said spindle being screw-threaded to engage said socket, a wheel fast on said spindle and adapted when the spindle is so engaged to guidethe material to said part of the core while keeping the r material out of the path of the traverse guide against the tendency of the winding tension to pull it into that path, and to be rotated by the material so as to unscrew the spindle from the socket, the pivotally mounted member being adapted when rotation of the wheel has withdrawn the spindle from the socket to swing the wheel out of contact with the material so as to allow the material to move into the path of the traverse guide.

9. In a machine for building yarn or like material into a cross-wound package, the combination with a package supporting core, driving means therefor and a self-threading traverse guide to lay the material on the core, of means for causing the first part of the material to be wound at one end of said core on a part thereof outside that which the cross-wound package will occupy, said means comprising a screw-threaded socket fixed to the frame of the machine, a member pivotally mounted on said frame, a bearing on said member, a spindle in said bearing, said spindle being screw-threaded to engage said socket, a wheel fast on said spindle and adapted when the spindle is so engaged to guide the material to said part of the core while keeping the material out of the path of the traverse guide against the tendency of. the winding tension to pull it into that path, and to be rotated by the material so as to unscrew the spindle from the socket, the pivotally mounted member being adapted when rotation of the wheel has withdrawn the spindle from the socket to swing downwards, carrying the wheel out of contact with the material so as to allow the material to move into the path of the traverse guide.

CHARLES F. BERAN.

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