US2293981A - Manufacture of rayon yarn - Google Patents

Manufacture of rayon yarn Download PDF

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Publication number
US2293981A
US2293981A US286294A US28629439A US2293981A US 2293981 A US2293981 A US 2293981A US 286294 A US286294 A US 286294A US 28629439 A US28629439 A US 28629439A US 2293981 A US2293981 A US 2293981A
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US
United States
Prior art keywords
filaments
chain
rayon
cams
roller
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US286294A
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English (en)
Inventor
Arthur L Jackson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Akzona Inc
Original Assignee
American Enka Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to NL54518D priority Critical patent/NL54518C/xx
Application filed by American Enka Corp filed Critical American Enka Corp
Priority to US286294A priority patent/US2293981A/en
Priority to DEA91695D priority patent/DE728186C/de
Application granted granted Critical
Publication of US2293981A publication Critical patent/US2293981A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D5/00—Formation of filaments, threads, or the like
    • D01D5/20—Formation of filaments, threads, or the like with varying denier along their length

Definitions

  • This invention relates to rayon and to a process of and apparatus for producing rayon yarn. More particularly the invention is directed due to the resistance encountered in the coagulating bath and, too, only relatively gradual systo the production of rayon in which the lilay ments or threads thereof have a non-systemati denier variation in the form of nubs.
  • the production of rayon yarns or threads and the utilization of the same in the formation of various types of fabrics has presented many problems due in part t denier variations oc-r curring in the nished yarns or threads as prepared and the normal operations involved -in the manufacture of knitted and Woven fabrics.
  • This invention contemplates the formation of rayon yarns, filaments or threads, for convenwas instigated with a view to providing processes and apparatus for efficiently producing varying denier or nub yarns which would formL novel and desirable fabrics when Woven or knitted.
  • this invention has as an ⁇ object the provision of a'y process and apparatus for the production of rayon filaments whereby novel effects will be produced in fabric'i'n which they are incorporated, the novel effects resulting from the non-systematic variations in the denier-'of the la'ments and the 'character of the ffnubs formed at varying intervals.
  • the present process and ⁇ apparatus contemplate forming nubs" in.v theA yarn by passing vto Vprovide i I 4laments-from a spinneret substantially verti-
  • the filaments are drawn off. by means of a positively driven godet at a point remote from the spinneret relative to the posil tion of the rollers.
  • the first roller is mounted for a slow movement away from the second roller and a quick return and the "nubs are formed on succeeding portions of the filaments adjacent the spinneret.
  • Figure 1 is a view in side elevation of a por tion of one form of apparatus constructed in accordance with the present invention and c Figure 2 is a transverse sectional view through the machine shown in Figure 1 illustratingthe rollers for thev laments formed by one of the spinnerets together with the mechanism for supporting and moving one of the rollers.
  • the numeral I designates a spinneret positioned as shown in a coagulating bath II which extends i along the entire length of the spinning machine.
  • a plurality of spinnerets III are positioned at spaced intervals within the coagulating bath. From a, suitable source (not shown) a spinning solution is caused to be extruded from each of the spinnerets III to form filaments I2 in accord- 1 ance with any of the well known practices.
  • the laments as formed are withdrawn substantially vertically from the coagulating bath II. This is .accomplished by passing the laments to and around a freely rotatable roller I3, after which they are .caused to descend substantially vertically to and around a second freely rotatable roller I4 located in close proximity ⁇ to said first roller I3.
  • rollers I3 and I4 are located just above the spinning bath II but spaced a material distance from their respective godets/ I5 for a purpose to be hereinafter more fully discussed.
  • Each roller I3 is carried at the free end of one of ⁇ a series of pivoted levers I6, the respective levers being pivotally secured to a ⁇ bracket II which is in turn bolted to a portion of ,the machine frame. Both bracket II and lever I6 are provided with a series of apertures through corresponding apertures without the necessity for bodily moving the lever.
  • is supported and driven by sprockets 23 and 24 which in turn are keyed to shafts 25 and 26 journaled at 21 and 28. Journals 21 and 28 are attached to upstanding L-bars 29 spaced apart by channel bars 30 and 3l which extend the length of the'machine and act to maintain the two sprockets in spaced relation.
  • the channel bar 3l acts as a housing for the lower run of chain 2
  • a sprocket 32 adapted to be connected to a suitable source of power (not shown) so that the sprockets and the chain carried thereby may be driven.
  • ⁇ 'I'he cams 26 are attached to alternate links of the chains 2
  • 'I'he unit 22 comprises a connecting rod 33 having a bifurcated end 34 into the recesses of which a portion of lever I6 is received and held by bolt 35.
  • the connecting rod is guided in its reciprocating path by bearing 36, filter bridge channel'31, spring stop 38 and bearing 39 eachattached to the machine frame.
  • a -rubber ring 46 is mounted upon the upper surface of bearing 36 and encircles the connecting rod 33. Ring 4l acts to absorb the shock resulting from the enextremity of connecting rod 33 there is another bifurcated member- 43 into the recess of which Is placed a freely rotatable roller 44 acting as a cam follower. The position of cam follower 44 is directly above the path of travel of the cams 23 in their movement along the upper run of the chain.
  • the connecting rod 33 is made in two sections connected together by a turnbuckle 45.
  • the lever I6 will oscillate in a path selected by their movement along the upper run of the chain as indicated by the arrow in Figure l. Due to the character of the cam surfaces and the speed of the chain, the upward movement of the connecting rods is gradual as the cams pass under respective cam followers. At the upper limit of each cam the cam follower is suddenly released bringing spring 42 into play to cause the lever I6 to abruptly return to its lower position. This operation willbe repeated as each cam 20 carried by the chain 2
  • An apparatus for producing rayon filaments comprising in combination means for forming filaments, a driven godet, a lever movable in an. arcuate path, a freely rotatable roller mounted on said lever, a second freely rotatable roller mounted in a fixed position in the path Vof the filaments between the godet and the first roller, and means to oscillate said lever so as to vary the distance between said first roller and said second roller while maintaining the distance between the second roller and godet constant.
  • An apparatus for producing rayon filaments comprising in combination means for forming filaments, a driven godet, a freely rotatable roller therebetween, a second freely rotatable roller for said filaments between said godet and said first roller,v said first roller being movable within a path with respect to said second roller to vary the distance therebetween, and means to actuate said first roller, said last named means path, and single means for moving each of said rollers at irregularly recurring intervals independently of each other.
  • An apparatus for producing rayon filaments comprising a plurality of means for l forming bundles of filaments, a driven godet for each bundle forming means, a freely rotatable roller for respective bundles in their path between said bundle forming means and said driven godet, each of said rollers being movable in a. restricted path, and a long endless 'conveyor having irregularly spaced cams lthereon for succ essively effecting the movement of each of said rollers at irregularly recurring intervals.
  • An apparatus for producing rayon filaments comprising a plurality of means for forming bundles of filaments, a driven godet for each bundle forming means, a freely rotatable roller for respective bundles in the1r path between 'said bundle forming means and said driven godet, each 'of said rollers being movable in a restricted path, means having a cam follower thereon connected to each roller, and a long endless conveyor havingl irregularly spaced cams thereon for successively contacting each of said cam followers at irregularly recurring intervals, thereby to actuate said rollers.
  • an apparatus for producing rayon filaments including means for forming bundles of filaments, a driven godet and an oscillating guide for each bundle of filaments in theirpath of travel intermediate said forming means and the y l guide having said guide freely rotatably mounted thereon, means including a cam follower attached to each lever, and a driven conveyor operating adjacent said cam followers, said conveyor having irregularly spaced cams thereon each adapted to contact each of said followers independently of each other to actuate each said lever at irregularly recurring intervals.
  • an apparatus for producing rayon dlaments including means for forming bundles of filaments, a driven godet and an oscillating guide for each bundle of filaments in their path of travel intermediate said forming means and the driven godet, an oscillating lever for each said guide' having said guide freely rotatably mounted thereon, means for effecting an adjustment of the path cf oscillation of said lever, means including a cam follower attached to each lever, a driven conveyor operating adjacent said cam followers, said' conveyor having irregularly spaced cams thereon each adapted to contact each of said followers independently of each other to actuate each said lever at irregularly recurring intervals.
  • an apparatus for producing rayon'illa- ⁇ ment producing machine having a. freely rotatable roller thereon mounted on a member movable in a path, comprising means including a cam follower connected to said member, a driven ments including means for forming bundles of filaments, a driven godet and an oscillating guide for each bundle of filaments in their path ment of the path of oscillation of said lever,
  • means including a cam follower attached to each lever, a driven conveyor operating adjacent said cam follower, said conveyor having irregularly spaced cams thereon each adapted to contact and slowly raise and abruptly release each of said cam followers independently of each other to actuate said lever at irregularly recurring intervals, and a meansconstantly urging said cam followers into the path of said cams.
  • An apparatus for producing 4rayon filaments having variable nubs'V therein comprising means for forming a bundle of filaments, a driven godet located at a point remote from said filament forming means, a freely rotatable roller mounted for reciprocation substantially vertimounted in a xed position in close proximity to said first roller and substantially vertically Y therebelow, and means to actuate said nrst roller with respect to said second rollerat irregularly recurring intervals.
  • An operating mechanism forA a rayon iilaendless chain operating adjacent said cam follower, cams on said chain adapted to4 engage said follower, and means constantly urging said follower into the path of said cams, said cams being connected to alternate' links of said chain irregularly spaced.
  • An operating mechanism for a. rayon filament producing machine having a freely rotatable roller thereon mounted. on a member movable in a path, comprising means including a cam follower connected to said member, a driven endless chain operating adjacent said cam follower, cams on said chain adapted to engage said follower. means constantly urging said follower in the direction of said chain, and means to support a run of said chain, the upper surface of said cams sloping upwardly away from the direction of movement of said chain, said cams being connected to alternate links of said chain at different points onthe said chain.
  • An operating mechanism for a rayon filament producing machine having a freely rotatable roller thereon mounted on a member movable in a path comprising a cam follower on said member, a driven endless chain. operating adjacent said cam follower, cams on said chain adapted to engage said follower, means constantly urging said follower into the path of said cams, a support for a run of said chain and means enclosing another run of-said chain, said cams being connected to alternate links of said chain at irregularly spaced intervals.
  • a process for the production of rayon threads having variable nubs therein comprising extruding filaments vertically through a spinneret into a coagulating bath, directly drawing the formedthread substantially vertically and without friction, from the spinneret while in a plastic state under tension, deflecting said thread from its vertical path at a point remote from said bath, slowly increasing the,distance of said point of deflection from said bath at irregularly recurring intervals at a rate of speed insufficient to materiallyv alter the cross-section of said thread, and suddenly decreasing the distance of said point of deflection from said bath at the end of each said intervals, whereby nubs" are formed in the plastic thread adjacent the spinneret, and setting the nub formation in the thread by causing the thread to pass through a long path of ⁇ travel prior to collection.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US286294A 1939-07-24 1939-07-24 Manufacture of rayon yarn Expired - Lifetime US2293981A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
NL54518D NL54518C (fr) 1939-07-24
US286294A US2293981A (en) 1939-07-24 1939-07-24 Manufacture of rayon yarn
DEA91695D DE728186C (de) 1939-07-24 1940-07-18 Vorrichtung zur Herstellung von Kunstseidefaeden mit unregelmaessigen Titerschwankungen

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US286294A US2293981A (en) 1939-07-24 1939-07-24 Manufacture of rayon yarn

Publications (1)

Publication Number Publication Date
US2293981A true US2293981A (en) 1942-08-25

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Family Applications (1)

Application Number Title Priority Date Filing Date
US286294A Expired - Lifetime US2293981A (en) 1939-07-24 1939-07-24 Manufacture of rayon yarn

Country Status (3)

Country Link
US (1) US2293981A (fr)
DE (1) DE728186C (fr)
NL (1) NL54518C (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418492A (en) * 1943-04-29 1947-04-08 Du Pont Manufacture of tapered filaments
US2920345A (en) * 1955-06-03 1960-01-12 Eastman Kodak Co Method and apparatus for producing variable denier yarn

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE866077C (de) * 1944-07-11 1953-02-05 Spinnfaser A G Verfahren zur Herstellung von Zellwolle aus Viscose
FR1065558A (fr) * 1952-07-17 1954-05-26 Files De Calais Procédé et dispositif pour la fabrication de fils flammés de textiles artificiels
BE530111A (fr) * 1953-09-04
DE1114002B (de) * 1953-10-16 1961-09-21 Glanzstoff Courtaulds Gmbh Getriebe fuer die Herstellung von Kunstseidefaeden mit aperiodischen Verdickungen

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2418492A (en) * 1943-04-29 1947-04-08 Du Pont Manufacture of tapered filaments
US2920345A (en) * 1955-06-03 1960-01-12 Eastman Kodak Co Method and apparatus for producing variable denier yarn

Also Published As

Publication number Publication date
DE728186C (de) 1942-11-21
NL54518C (fr)

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