Патент USA US2119963код для вставки
June 7, 1938. 2,1 19,963 R. A. RAMSDELL PACKAGE AND METHOD OF PRODUCQING SAME Filed June 21, 1935 / // / / .33 m. W Z2 F165 I /24 A '22 INVENTOR. Robert A .Ramsclell BY I ATTO NEW’. Patented June ,7, 1938 2,119,963 ‘ UNITED STATES PATENT OFFICE ' 2.11am memos AND m-z'rnon or raonucmo sum Robert A. Ramsdell, Syosset, N. Y., assignor, by mesne assignments, to E. I. du Pont de Ne-v monrs & Compan , Wilmington, Del., a cor poration of Delaw e Application June 21, 1935; Serial No.‘ 27,825 4 Claims. (Cl. 117-1) This invention will be described with particu > lar reference to crepe twisting. of silk and rayon; however, it is to be understood that the scope of the invention includes the production of all types of high twist yarn having such weight or denier and, such a high degree of twist that the tension and the ballooning of the yarn. This ?yer ordinarily consists of a horizontally disposed wire having an eye at one end thereof which ex twist must necessarily be imparted thereto by tends beyond the edge of the top head of the throwing spool as it is important that the yarn 5 balloon around the periphery of the head of the spool without contacting therewith to prevent means of throwing machines commonly referred degradation of the yarn. to as uptwisters or silk spinners. ' ' The throwing spools as known heretofore were 10' Heretofore the crepe twisting of silk and rayon necessarily made with comparatively large bar- 10 has involved the following essential procedure: \ rels and were wound with relatively few layers The silk or rayon, in the form of skeins, was \ of yarn. The spool was wound with relatively treated, for example by immersion, with a suit few layers of yarn so as to maintain a su?lciently able‘ dope. This dope usually comprises an oil 15 ?nish, an adhesive and a fugitive dye or tint. The adhesive, consisting ordinarily of gelatin, functions to hold the high twist in the yarn and prevents the same from becoming lively after the twist has been set. The oil lubricates and softens the yarn to protect the same in subse or centrifugal forces from being transmitted to 15 the yarn at the high rotational speeds of the spool. The barrels are made comparatively. large The treated yarn was then wound onto small to prevent the thread frompbeing drawn over the head of the spool without ballooning, or from ballooning at a sharp angle from the spool. 20 The production of arti?cial thread has been improved to the point where it is no longer nec essary to process the same in skein form. The arti?cial thread is formed by extrusion of a liq spools made of wood or ?ber composition with relatively large barrels and small heads. Only a uid through a spinneret and collected in a cen- 25 trifugal bucket or on a bobbin. The arti?cial small amount of yarn could be contained on such a spool, hereinafter to be referred to as “throw ing spool”, from whichit was to be crepe twisted, thread, so collected, is then processed by wash ig, desulfuring, bleaching and drying in the form of package in which it is originally collected, or, for reasons which will appear hereinafter. in the case of bobbins, a package formed from 30 quent winding and throwing operations. The dye or tint serves to identify the yarn during subse quent twisting, winding and weaving operations. 25 small diameter to prevent excessive peripheral In the handling of 100 denieryarn, not more than the original by rewinding and twisting. The 1 to 3 ounces could be wound on a throwing spool. These spools were then mounted on suitable ver form of package in which the arti?cial thread is processed, as above-described, will be herein after referred to as the "original package”. .It has been found that the arti?cial silk can also be 36 treated with a suitable creping dope in its origi tical spindles capable of revolving at high speeds, 35 such, as for example, 9,000 to 11,000 R. P. M. The spools of yarn were revolved either in a clockwise or counter-clockwise direction, depend ing upon the direction of twist desired in the yarn. The yarn is drawn up and away from the M - revolving spool at a constant speed and wound up on another spool or take-up bobbin which is sometimes referred to as a steaming spool. The type of machine used to impart a high twist to a ?ne denier thread in the manner above nal package form, thus eliminating the opera tion of first winding the same into the form of skeins» Consequently, the transportation 01' ar ti?cial yam, in the form of skeins, from'the pro- 40 ducer thereof to the throwster, would involve an otherwise unnecessary step of ?rst skeining the yarn. To transport'theyarn in the original package form is undesirable and impractical. - described is that above referred to as an up-twist It has been suggested to wind the processed 45 er or silk spinner. It has been found necessary > and doped yarn directlytfrom the original pack to use this type of machine for ?ne denier yarn when a high degree of twist is to be imparted thereto. By operating in this manner less ten sion and frictional resistance are placed on the age to a throwing spool and transport the mm from the producer to the throwster in this form, thus eliminating the skeining operation. This has yarn than in other types of twisting apparatus. been found to be entirely impractical by reason 50 of the comparatively'large percentage of space A ?yer or yarn guide is rotatably positioned on the top of the spindle of an up-twister for the purpose of guiding the yarn from the throwing and weight taken up by the throwing spools. F1u~thermore, the empty throwing spools would 55 spool to the take-up bobbin and controlling the again have to be returned to the yarn producer. ‘In an attempt to overcome this last-mentioned 65 2 2,119,003 , di?iculty it has been suggested to ?rst wind the yarn from the dope-treated original package onto like, and yarn I! tightly wound thereabout. This core is preferably of uniform cross-section a substantially rigid paper or ?ber core in the throughout the length thereof so as to produce a package of yarn having substantially cylindrical conventional “cone" form of package, the yarn transported in the form of cone packages to the contour, thus preventing bunches or layers of yarn from shifting on the package or “sloughing throwster, and then rewound onto a throwing spool. This procedure'is obviously little better oil" due to centrifugal force, however, a slightly than ?rst skeining the same and transporting the conical core may be use without objectionable yarn in skein form. In this connection it was shifting oi’ the thread. 10 well recognized bythe art that a cone may be used directly in the so-called down-twister type _ The yarn package may contain up to 3/4 pound of yarn and may be as much as 21/2 inches in of machine in which the cone remains stationary and the take-up bobbin is rotated. In an up diameter. I prefer however a package contain ing 4 to 5 ounces of yarn and having an outside twister type of machine, on the other hand, the diameter of about2t/4 inches. The package may vary in length but should be short enough to be accommodated on the throwing machines with 15 cone would be rotated at such a high rate of speed that the layers of thread would telescope and be out alteration. The inside diameter of the core ii is preferably about one inch although consid erable variation in this dimension is permissible. The core’ should comprise no more than about 20% of‘ the total weight of the package, and nor mally will comprise about 10 to 18% of the total - \ thrown in large bunches from the cone by the centrifugal force. The applicant has now found that, contrary 20 to accepted practice, a yarn package which may be economically transported and which may be used directly on the throwing spindle without ?rst rewinding the yarn onto a throwing spool, can-be wound from the original package. 25 weight thereof. from the original package. The winding oper It is therefore an object of this invention to ation is preferably carried out on a precision provide an improved process for the production of crepe twisted yarn from arti?cial thread. It is another object of this invention to provide winding machine of the Universal type. In the winding of the package the stroke of the traverse is progressively shortened so as to form the pack. age with tapered ends, the taper being about 30 .80 to '75". The yarn is preferably tightly wound without about 4 turns around the package per traverse stroke whereby to obtain a compact package of yarnrequiring no head to support a suitable package of arti?cial thread which has 30 been dope-treated for high twist, such as crepe twist, and which can be economically produced and transported to a distant plant for direct use on the spindle of an up-twister. Other objects of the invention will appear here 35 inafter. . The core H is wound with the yarn l2 directly the same despite‘the high rotational speed to ' which it is to be submitted. The objects of my invention are achieved, in general, by processing an original package of ar ti?cial silk including the treatment thereof with a ‘suitable creping dope, then winding the treated ' yarn on a substantially rigid, light-weight core , by means of a precision winding machine, such as, for example, a machine of the type manu factured by the Universal Winding Machine Cor poration and commonly referred to in the art i The package of Fig. -1 has the additional ad vantage that it may be used to produce either right- or left-hand ‘twisted crepe thread by merely reversing the end of the package which is 40 ?rst placed on the spindle. In the use of throw ing spools as known heretofore it was necessary to wind the yarn thereon in a speci?ed direction to make it suitable for production of left-hand twist crepe and in the other direction to make 45 as a Universal Winder. The yarn is precision it suitable for production of right-hand twist wound to form a relatively large package, the to tal weight of which is at least ?ve times the crepe by reason of the fact that throwing spools must always be positioned on _a spindle with weight of the core. The package is then trans ported to a throwing plant where it is directly the same end down.v Therefore, in accordance positioned on a throwing spindle of an up-twister with the present invention, the same package. can be used for either right- or left-hand twist and a high twist imparted to the yarn. The objects and purposes of the invention will yarn. . Fig. 2 shows a modi?ed form of a thread pack be more clearly apparent by reference to the fol lowing detailed description taken in connection age having a rigid, light-weight core I3 com 56 with the accompanying illustrations of certain prising a cylindrical hollow barrel l3 and a head . speci?c embodiments thereof, it being understood or ?ange 33. The ?ange 38 will prevent slough ing of! of the thread II from one ‘end of the’ that the invention is not limited thereto. package and the thread may be wound against In the drawing: _ _ Fig. 1 is a vertical cross-sectional view of a 00 yarn package which may be directly mounted‘on' the spindle of an up-twister. the ?ange so that a larger amount of thread may be contained thereon. This form, of pack age, however, has the disadvantage that only left- or right-hand twist crepe thread'may be Fig. 2 is a vertical cross-sectional view of a modi?ed form of yarn package. ' Fig. 3 is a vertical cross-sectional view showing 05 an adapter which may be interposed between a suitable yarn package and a spindle of an up 'produced therefrom, depending upon the direc tion in which the thread is wound on the core. Referring to Figs. 3 and 4 vof the drawing, l5 designates a throwing spindle of an up-twister, i8 designates an adapter which may be mounted Fig. 4 is a vertical cross-sectional view showing on the spindle ii to receive the yarn package a yarn package and adapter mounted on the spin ‘of Figs. 1 or 2. The adapter It consists of a solid barrel 36, a head 22 and a plurality of leaf 70 70 dle of- an up-twister; and Fig. 5 is a vertical cross-sectional view showing springs IT. The adapter has a su?lciently small a conventional throwing spool. ' diameter to permit the core II (or ii) to easily The yarn package illustrated in Fig. 1 of the slide thereover. When the package is positioned drawing consists of a rigid, light-weight core ll on the adapter the springs II are compressed to of paper, paste-board, card-board, ?ber, or the’ hold the package ?rmly in place thereon. The 75 twister. _ _ ' 9,119,968 adapter Is; is provided with any desired driving engagement with the spindle such as, for ex ' ample, the tapered ?t shown in Figs. 3 and 4. ‘ The form of adapter described is particularly desirable since it can be easily and quickly formed from conventional throwing spools as shown in Fig. 5 of the drawing. The throwins spool barrel 24 is merely cut down to the de sired diameter, for example, by turning on a 10 lathe, and the top head 23 removed therefrom. The barrel is then provided with suitable hold 3 has been found that the thread tension does not vary greatly and that a substantially uniformly twisted crepe thread is produced. This is par tially due to the fact that the end of the pack age does not require a head around which the yarn must be drawn as is the case with throw ing spools. The radius of the ?yer need not be so large as to over-hang the edge of the outer diameter of the yarn. Therefore, the centrifugal _ force of the yarn as it is forced against the ?yer or the radius of the balloon of the yarn is not of such magnitude as to injure the yarn. Obviously, the adapter may be omitted, if de 1 The light-weight paper or ?ber core used in sired, by forming the core of such diameter that . accordance with the present invention is of cheap 15 it may be directly mounted on the spindle of an construction and therefore is suitable for one 15 up-twister. ing means such as the leaf springs H. H way shipment. After the yarn package is positioned on the spindle i5, as shown in Fig. 4, the projecting end of the spindle is provided with a ?yer 20 by rotatably positioning the ?yer bearing II on the spindle in a known manner. The yarn. which has only su?lcient twist to prevent it from open ing, is passed through one eye ll of the ?yer and then to a take-up bobbin (not shown). The spindle is now rotated at a high speed, for ex ample, 10,000 R. P. M., and the yarn wound up . The direct winding of the‘ yarn onto the core from the original package eliminates at least one winding operation I from previously known methods. In accordance with the present invention a larger quantity of arti?cial thread ‘can be mount ed on a spindle for twisting without increased power consumption. . . A relatively large package of yarn can be pre pared and wound with more perfect wind than is possible with the use of headed spools such as previously used in the crepe twisting of arti?cial on a take-up bobbin or steaming spool at the rate of 250 inches per minute whereby a twist of 40 turns per inch is imparted to the thread, silk, thus greatly reducing dimculties in throwing 30 assuming no contraction in length. ' and the time given by the attendant per pound ‘The following example will serve to illustrate of crepe produced. ‘ more clearly the steps of‘ producing crepe twist By eliminating the skein processing of arti thread in accordance with the present invention, ?cial thread the yarn is much less degraded, and it being understood that the invention is not to ' contains fewer knots, broken ?laments, ?uii' balls, be limited to the speci?c details set forth: and the like. ‘ Bucket cakes of 100 denier-40 ?lament yarn spun with a left twist of 4 turns per inch, and which have been washed, desulfured, bleached and dried in the original package form, for ex ample, in accordance with the process described in the copending application, Serial No. 683,896, to J. S. Fonda et al., are subjected to a soaking operation which comprises immersing the proc essed package for about one-half hour in a bath composed of 27 pounds sulfonated olive oil, 4 pounds gelatin, 50 gallons of water, and V2 to 2 grams of fugitive dye per liter of solution, de pending upon the depth of color desired, which is maintained at a temperature of 120°-130° F. process, cellulose ester or ether thread such as ‘ cellulose acetate, benzyl cellulose, glycol cellulose threads, and the like. Many changes and modi?cations may be made in the present invention without departing from the nature and spirit thereof. It is therefore to be understood that the invention is not to be limited to speci?c steps and modi?cations above described except as set forth in the appended claims. Thereafter, the packages are centrifugally wrung I claim: by rotating the same about their own axes for ' 1. In a process for the production of crepe twist about 3 minutes at a speed of about 7,000 R. P. M., and dried. The dried packages of yarn, after humidi?cation or conditioning, in a known manner, are directly wound on the cylindrical core above described by means of a Universal precision winding machine to form a package containing about £4 pound of yarn, and of the general shape illustrated by Fig. 1 of the draw ing. The package is then transported to a throwing mill where it is mounted on the throw ing spindle of an up-twister and ,a high twist imparted thereto as‘above set forth. Any desired doping or tinting solution may be used to impart the desired characteristics to the yarn. Furthermore, the doping or tinting solution may be applied to the yarn in any de sired manner and at any suitable point in the process. 70 The invention is applicable to silk or any type of arti?cial thread, such as regenerated cellulose thread produced by the viscose or cuprammonium - ed arti?cial thread from original packages of thread produced in the ?lament forming opera tion and which have been puri?ed, dried, doped and have a preliminary twist imparted thereto,_ the steps comprising precision-winding said thread from the original package onto a light weight, headless core, to form a package which may be mounted on and from which the thread may be directly twisted by means of an up twister, said package being economically trans 00 portable for long distances, and crepe twisting said thread directly therefrom. 2. In a process for the production of crepe twisted arti?cial thread from original packages of thread produced in the ?lament forming op 65 eration and which have been puri?ed, dried. doped and have a preliminary twist imparted thereto, the steps comprising precision-winding said thread from the original package onto a light The comparatively large size of the packag 70 produced in accordance with this invention will weight, headless core, to form a package which may be mounted on and from' which the thread permit a long period of twisting per spindle with out changing packages. In spite of the large ' may be directly twisted by means of an up change in diameter of the package from the be- , twlster, said package being economically trans 75. ginning to the end of the twisting thereof, it portable for long distances, positioning said re 75 4 auaass wound package on a spindle of an tip-twister and crepe twisting said thread directly therefrom. 3. In a process for the production or crepe twisted arti?cial thread from original packages of thread produced in the ‘?lament forming op ‘oration and which have been puri?ed, dried, doped and have a pmeliminary twist imparted '10 4. lnzxa process for the production oi crepe twisted arti?cial thread from original packages of thread produced in the ?lament forming op eration and which have been puri?ed. dried.‘ doped and have a preliminary twist imparted thereto, thefsteps comprising precision-winding said thread from the original package onto a thereto, the steps comprising precision-winding light-weight, headless core. to form a package said thread from the original package onto a’ light-weight, headless core, to iorm a package‘ containing approximately 4-to 12 ounces of thread. and which maybe mounted on and from which the thread may be directly twisted by means of an up-twister, said package being economically up-twister. said package being ‘economically transportable for long distances, said core weigh transportable for long distances. and crepe twist 586. 15 ing said thread directly therefrom. which may be mounted on and irom which the thread may be directly twisted by means of an 10 ing not in excess of 20% of said package, and crepe twisting directly from said rewound pack nomm'r 5., RAMBDELL.