US2539982A - Yarn treating vat having guide wheel driven by a magnetic coupling - Google Patents

Yarn treating vat having guide wheel driven by a magnetic coupling Download PDF

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Publication number
US2539982A
US2539982A US725513A US72551347A US2539982A US 2539982 A US2539982 A US 2539982A US 725513 A US725513 A US 725513A US 72551347 A US72551347 A US 72551347A US 2539982 A US2539982 A US 2539982A
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United States
Prior art keywords
yarn
wheel
bath
guide wheel
magnetic coupling
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
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US725513A
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English (en)
Inventor
John K Whisnant
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 FR956826D priority Critical patent/FR956826A/fr
Application filed by American Enka Corp filed Critical American Enka Corp
Priority to US725513A priority patent/US2539982A/en
Application granted granted Critical
Publication of US2539982A publication Critical patent/US2539982A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • D01D5/06—Wet spinning methods

Definitions

  • This invention relates to thread guiding and propelling apparatus and is more particularly concerned with apparatus for advancing freshly formed rayon yarn through a treating bath.
  • these guide wheels may be driven by frictional contact with the thread passing around them or from a suitable mechanically connected external power source but, in practice neither of these expedients has been wholly satisfactory, particularly in handling freshly spun rayon yarn.
  • Figure 1 is a. schematic perspective view a single unit of a two bath spinning system illustrating the position of the driving wheel of the present invention in the assembly;
  • Figure 2 is a vertical sectional view of the guide wheel of the present invention in association with a portion of the apparatus of Figure l:
  • I Figure 3 is a view in elevation taken along the line 3-3 of Figure 2;
  • Figure 4 is view in elevation taken along the line H of Figure 2.
  • the numeral Iii represents a tank conperipheral speed than the godet which draws the yarn from the spin bath, it is apparent that, if the frictional drag imposed on the yarn by the guide wheel is non-uniform, stretch variations will occur which deleteriously effect the quality of the finished thread. It has been found that it is not entirely practical from a commercial point of view to provide a thread-driven wheel which will afford a frictional drag on the thread which is sufllciently uniform to meet operating requirements.
  • the spinning solution such as viscose is led to the tank It through a pipe II from a source not shown and is extruded through a spinnerette [2 located within the tank Ill and below the surface of the acid spin bath.
  • Freshly spun yarn is drawn from the spinnerette by a godet I! supported from a panel [4 and driven by conventional means, not shown. From the godet It the yarn is passed downwardly and into a tank i5 containing hot dilute acid. In its passage through the tank It it is guided and propelled by a large guiding wheel l6 partially submerged in the hot dilute acid.
  • the thread After leaving the guide wheel IS the thread is drawn upwardly by a godet i'l similar in structure and operation to the godet l3, and from the godet II the thread is passed to a point of collection or to after treatment, a point of collection being diagrammatically indicated at it. It is noted that the tanks l0 and ii are of approximately equivalent dimensions and are separated by a hollow partition i9, trapezoidal in section.-
  • a driving shaft ill driven at an appropriate speed by conventional means, not shown, and this drive shaft is provided with gear 2! which meshes with It is an object of this invention to overcome 66 a gear 22 mounted on a stub shaft 23 for rotation therewith.
  • suitable conventional bearing means 24 and 26 are provided to guide and support the shaft 23.
  • the end of the shaft 23 adjacent the tank It is provided with a driving part 26 of a magnetic coupling.
  • This part consists of a generally rectangular piece of metal provided with pole pieces 21 and 23 adapted to lie'closely adjacent a partition wall 29 separating the tank 46 from the hollow working space within the partition i9.
  • the wall 29 is constructed of any material that is substantially non-magnetic, such as lead or plastic.
  • the driving member 26 will be either permanently magnetized or an electro-magnet of conventional design, the opposite pole pieces being designated by reference characters 21 and 23.
  • a stub shaft 30 Mounted on the wall 29 and lying within the tank ii there is a stub shaft 30.
  • This shaft is supported from one end only by suitable attachment to the wall 29 and extends in alignment with the shaft '23.
  • the shaft 30 may be made of suitable material which is resistant to the acid contained within the tank l and it serves to support for rotation thereon the guide wheel l6.
  • the guide wheel includes a peripheral yarn contacting surface 3
  • the hub surrounds the shaft and rotates thereon.
  • the flange 32 acts to prevent the yarn from getting between the partition wall 29 and the wheel proper, while the annular surface 3
  • a diametrically disposed bar 34 of magnetic material which is fixed to the bath wheel and which lies adjacent the driving member 26 but on the other side of the partition 29 therefrom. If desirable, several of such bars may be employed, provided of course, the driving member contains the same number of poles.
  • the magnetic material 34 may be either magnetized or unmagnetized material of high permeability. To increase the strength of the couple between the driving element 26 and the magnet 34, it is desirable, of course, to have the members 26 and 34 both permanently magnetized and with their pole pieces arranged as is indicated in Figure 2.
  • the Wheel l6 lies wholly within the bath tank l5 and there is no shaft or other connection which passes through the partition. Accordingly, the packing difiiculties and protective measures against corrosion which were of considerable concern in the prior art, are wholly obviated. Due to the fact that the magnetic coupling is established between the pole pieces 21 and 28 and the corresponding pole pieces of the magnet 34, the guide wheel is is positively driven and variations in the frictional drag between the bath wheel and its bearings are absorbed by the driving mechanism rather than by the yarn so that protection of the yarn against uncontrolled stretch is afforded. It is of course, understood that the driving memberv might be unmagnetized thereby constituting a pole piece for a permanently magnetized bar located on the wheel.
  • the above described type of magnetic drive has the additional advantage of providing synchronous rotation of the driving member and the driven member, because as soon as the magnetic field is broken, the torque created on the driven member drops to substantially zero.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Artificial Filaments (AREA)
US725513A 1947-01-31 1947-01-31 Yarn treating vat having guide wheel driven by a magnetic coupling Expired - Lifetime US2539982A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR956826D FR956826A (en(2012)) 1947-01-31
US725513A US2539982A (en) 1947-01-31 1947-01-31 Yarn treating vat having guide wheel driven by a magnetic coupling

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US725513A US2539982A (en) 1947-01-31 1947-01-31 Yarn treating vat having guide wheel driven by a magnetic coupling

Publications (1)

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US2539982A true US2539982A (en) 1951-01-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
US725513A Expired - Lifetime US2539982A (en) 1947-01-31 1947-01-31 Yarn treating vat having guide wheel driven by a magnetic coupling

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US (1) US2539982A (en(2012))
FR (1) FR956826A (en(2012))

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786737A (en) * 1950-03-28 1957-03-26 British Celanese Wet spinning process

Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US644498A (en) * 1899-05-22 1900-02-27 Edward Samuel Cook Washing-machine.
US778236A (en) * 1904-07-27 1904-12-27 John W Fries Machine for dyeing, &c.
US1259526A (en) * 1916-11-25 1918-03-19 Wegmann & Co Process and plant for the treatment of fabric pieces.
GB179295A (en) * 1921-02-02 1922-05-02 Evan Lovell Widdrington Byrne Improvements relating to submersible electrical machinery
US1722813A (en) * 1928-04-12 1929-07-30 Slasher Rolls Co Rinsing machine
US1847006A (en) * 1929-02-06 1932-02-23 Westinghouse Electric & Mfg Co Driving mechanism
US1900811A (en) * 1928-05-29 1933-03-07 Courtaulds Ltd Production of artificial threads and the like from viscose, and in apparatus therefor
US2056177A (en) * 1933-02-03 1936-10-06 Charles Tagliabue Mfg Co Flow meter
US2145019A (en) * 1937-03-31 1939-01-24 Backup Eliott Cloth washer
US2346696A (en) * 1940-03-05 1944-04-18 American Enka Corp Manufacture of rayon
US2348415A (en) * 1941-05-09 1944-05-09 American Enka Corp Manufacture of rayon
US2366562A (en) * 1943-08-09 1945-01-02 Hoover Co Refrigeration
US2369190A (en) * 1939-03-01 1945-02-13 American Enka Corp Manufacture of rayon

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US644498A (en) * 1899-05-22 1900-02-27 Edward Samuel Cook Washing-machine.
US778236A (en) * 1904-07-27 1904-12-27 John W Fries Machine for dyeing, &c.
US1259526A (en) * 1916-11-25 1918-03-19 Wegmann & Co Process and plant for the treatment of fabric pieces.
GB179295A (en) * 1921-02-02 1922-05-02 Evan Lovell Widdrington Byrne Improvements relating to submersible electrical machinery
US1722813A (en) * 1928-04-12 1929-07-30 Slasher Rolls Co Rinsing machine
US1900811A (en) * 1928-05-29 1933-03-07 Courtaulds Ltd Production of artificial threads and the like from viscose, and in apparatus therefor
US1847006A (en) * 1929-02-06 1932-02-23 Westinghouse Electric & Mfg Co Driving mechanism
US2056177A (en) * 1933-02-03 1936-10-06 Charles Tagliabue Mfg Co Flow meter
US2145019A (en) * 1937-03-31 1939-01-24 Backup Eliott Cloth washer
US2369190A (en) * 1939-03-01 1945-02-13 American Enka Corp Manufacture of rayon
US2346696A (en) * 1940-03-05 1944-04-18 American Enka Corp Manufacture of rayon
US2348415A (en) * 1941-05-09 1944-05-09 American Enka Corp Manufacture of rayon
US2366562A (en) * 1943-08-09 1945-01-02 Hoover Co Refrigeration

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2786737A (en) * 1950-03-28 1957-03-26 British Celanese Wet spinning process

Also Published As

Publication number Publication date
FR956826A (en(2012)) 1950-02-08

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