US1950922A - Manufacture of artificial silk - Google Patents

Manufacture of artificial silk Download PDF

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Publication number
US1950922A
US1950922A US186728A US18672827A US1950922A US 1950922 A US1950922 A US 1950922A US 186728 A US186728 A US 186728A US 18672827 A US18672827 A US 18672827A US 1950922 A US1950922 A US 1950922A
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US
United States
Prior art keywords
thread
godet
rotor
godets
manufacture
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
US186728A
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English (en)
Inventor
Frank H Griffin
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.)
Akzo Nobel UK PLC
Original Assignee
American Viscose 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 BE353760D priority Critical patent/BE353760A/xx
Application filed by American Viscose Corp filed Critical American Viscose Corp
Priority to US186728A priority patent/US1950922A/en
Application granted granted Critical
Publication of US1950922A publication Critical patent/US1950922A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/227—Control of the stretching tension; Localisation of the stretching neck; Draw-pins

Definitions

  • My invention relates to the manufacture of artificial silk', and particularly to an improvement in method and apparatus by which the product is improved from the standpoint of vtensile strength, uniformity in strength and size, and dyeing properties. While my invention may be applicable to dry spinning as well as wet spinning, and also to silk spun from various cellulosic solutions, I have practiced it particularly in the manufacture of artificial silk from viscose, and accordingly have illustrated viscose silk spinningl apparatusin the accompanying more or less diagrammatic drawings, in which Fig. 1 is a side elevation, partially in section,
  • Fig. 2 is an enlarged section illustrating the adjustable carrier bar infwhich a-,battery of lower godets and their associated guides are mounted;
  • Fig. 3 is a broken plan view of portion of a battery of spinning units, only the pumps and lower godets and their drive connections being shown;
  • Fig. 4 is an end elevation of the drive gear for the lower godets and pumps
  • Fig. 5 is a front elevation of the spinning unit' shown in Fig. 1;
  • Fig. 6 is a broken front elevation of a Abattery of upper godets and their drive gear
  • Fig. 8 is a section of a. detail of the lower godet drive; and i Fig. 9 is a front elevation of a modified layout in which a plurality of upper godets is used.
  • the thread be led from a stationary guide, submerged in the Fig. 7 is a front elevation of an adjustable carsetting bath, to a positively driven cylinder and thence to a winding bobbin, the peripheral speed of the bobbin exceeding that of the positively driven cylinder.
  • Practical experience has established, however, that there is not only slippage of the thread at the cylinder which prevents uniformity of tension between the latter and the winding bobbin, but also that the deflection of the thread ata sharp angle from the submerged .guide to the cylinder is in itself objectionable, since it prevents uniformity of tension between, guide and cylinder and between guide and spinning nozzle.
  • My invention contemplates the engagement of the thread (that is to say the group of filaments 'which eventually constitutes the thread) between ⁇ spaced rotors positively driven at different peripheral speeds, the engagement of the thread with each of the rotors being so effected that no appreciable slippage occurs at either. A uniform tension is thus placed 'on the thread 95 between these rotors, and also between the spinning nozzle and the rotor which draws the thread Vfrom the spinning bath.
  • the thread may be passed between pairs of cooperating rolls which positively engage the thread at the nip of each roll pair.
  • Fig. 1 a layout which comprises asetting bath 15, into which the group of filaments which composes the thread is discharged through a submerged nozzle 16 connected to the pump 17.
  • the thread From the spinning nozzle 16 the thread passes to a guide 18 so arranged with respect to a positively driven lower godet 19 that the thread is delivered Iwithout substantial deflection by the guide 18 to the periphery of the godet.
  • the thread On the latter the thread is lapped sufficiently toinsure a non-slipfdraughting engagement therewith, and is taken from the godet over a second guide 20 located to prevent interference between the on and off courses of the thread on the godet.
  • Both guides 18 and 20, as well as the godet spindle 21, are carried by a bar 22 longitudinally adjustable on its supporting brackets 23 to vary the length of the thread submersion in the bath 15.
  • the guide 20 is also preferably mounted on an adjustable bracket 24 so that its position with respect to the godet may be varied.
  • the thread 25 passes from guide 20 to the upper godet 26, with'which is associated the guide 27.
  • the notch 28 of the guide 27 receives the thread and delivers it to the godet 26 adjacent the rim flange 29 of the latter. Lapping the godet 26 the thread is engaged in notch 30 of the guide from which it again laps the godet 26, thus similarly insuring a non-slip draughting engagement between the godet and thread. Passing from the godet 26 the thread descends through the guide funnel 31 to a coiling device such as a spinning box (not shown).
  • any suitable means may be provided for driving the godets 21 and 26 at differentA peripheral speeds.
  • the godets are ofv the same diameter and the gearing is so arranged as to impart to the godet 19 a slower speed of rotation than that imparted to the upper godet 2G. Both take their drive from the main shaft 32.
  • the drive for the lower godet 19 is indicated in Fig.
  • the upper godet 26 is driven from shaft 32 throughbevel ⁇ pinion 46, meshing with a bevel sprocket 47 on shaft 48, a second bevel sprocket 49 at the opposite end of the shaft meshing with bevel gear 50 on shaft 51 of sprocket 52 throughy which motion is transtwo godets 21 and 26 may be varied to increase or decrease the tension exerted upon the thread as it passes therebetween and between the lower godet and the spinning nozzle.
  • Gear 37 may be replaced by a gear of different size if it is desired tochange proportionally the speedsg of pump 17 and godets 19.
  • the adjustable mounting of the idlers 39, 40 and 53 permits these substitutions.
  • the number of laps necessary to insure a sufficient frictional grip of the thread upon the godets may vary with the diameter of the latter, with theirspeed of rotation, the denier of the thread and other factors. It may be desirable under certain conditions to vary the number of laps on either or both godets, and my invention contemplates appropriate guide constructions to prevent interference between the courses or tracks of the laps on the respective godets.
  • Guide 27, as well as guide 20, is preferably adjustable upon its support.
  • the guides may be glass or porcelain rods. 'They may be substituted if desired by metallic spindles, upon which small pulleys of glass, or other inert material, may be journaled to prevent possible injury to the thread by frictional engagement. Guide pins of known type may be used if desired.
  • the method ofstretchingthe thread which-comprises feeding the thread from ⁇ the spinning nozzle into engagement with a series of rotors while causing the thread engaging portion of each rotor to have a higher linear speed than the corresponding portion of the preceding rotor in the series and While causing the thread to have, at each rotor, substantially the same linear speed as the portion of the rotor it engages, and delivering'the thread continuously from the last of said rotors.
  • the lmethod of passing the thread from thespinning nozzle to a coiling device which comprises drawing the thread from the spinning nozzle by a driven godet, delivering the thread from said godet to a second godet driven at a higher peripheral speed, causing the thread While vin engagement with each godet to have substantially the same linear speed as the portion of the godet that it engages, and delivering the thread continuously from said godets to a coiling device.
  • the method of passing the thread from the spinning nozzle to a coiling device which comprises drawing the thread from the spinning nozzle by a driven rotor, delivering the thread from said rotor to a second rotor driven at higher peripheral speed, causing the thread while in engagement with each rotor to have the same -linear speed as the portion of the rotor which it engages, and delivering the thread continuously from said second rotor to a coiling device.
  • the method of delivering the thread from the spinning nozzle to a coiling means which comprises giving the thread a different speed at spaced points in its path of travel thespeed at each pointibeing higher than at the preceding point, and maintaining the respective speeds constant for successive portions of the thread passing said points.
  • Apparatus for the manufacture of artificial silk comprising a pairl of spaced rotors positively driven at different. peripheral speeds, and means associated with each'rotor for thereon engaging against slippage and trackage a thread drawn by the rotor of higher peripheral speed from the rotor of lower peripheral speed.
  • Apparatus for the manufacture of artificial silk comprising a spinning bath, a positively driven rotor in proximity to the bath, and means associated with the rotor for thereon engaging against slippage a thread drawn by the rotor from the bath, in combination with a similar rotor of higher peripheral speed, and means for thereon engaging against slippage the thread drawn thereby under tension from the first rotor.
  • Apparatus for the manufacture of artificial silk comprising a pair of spaced godets, means for positively driving said godets at different peripheral speeds, and guide means associated with each godet for preventing trackage interference thereon of a thread extending between said godets and lapped on Veach to prevent slippage of the thread on said godets due to the tension exerted on the thread by the draft of the godet having higher peripheral speed.
  • An artificial silkproducing apparatus having a spinning nozzle for delivering thread-formingmaterial to a setting bath and a means for coiling the thread, in combination with two or more godets between the nozzle and the coiling means, said godets having means for guiding the thread therearound with an arc of contact of the yarn on the godets sufcient to prevent slippage,
  • Apparatus forstretching freshly spun filaments of articial silk comprising a spinning nozzle, two or more rollers spaced apart, each roller revolving at a peripheral speed greater than the peripheral speed of the preceding roller, in combination with means. associated with each roller for guiding the thread onto the same, and a second thread guiding means for preventing tracking of the thread inserted in the thread course at veach roller positioned to move the thread from one position on the roller to another as the thread passes one or more times around the respective rollers.
  • Apparatus for the manufacture of artificial silk thread comprising a spinning nozzle, a pair of spaced godets around which the thread is lapped to prevent slippage, and means for driving said godets positively at different peripheral speeds, in combination with guide means associated with a godet adapted to contact with thread as it passes around said lapped godets to prevent trackage thereon.
  • Apparatus for the 'manufacture of artificial silk thread comprising a pair of spaced godets driven at different peripheral speeds, each adapted to have arcs of contact with the thread sufficient to ensure against slippage of the thread on the godets, in combination with a guide means at each godet guiding the thread onto same, and
  • ⁇ a second guide means positioned to remove the thread from the godet after the thread has contacted with ⁇ the godet and to guide it! ⁇ back onto cial silk, comprising a pair of spaced god "Q means for positively driving said godets L.
  • different peripheral speeds and guide means associated with each godet having a plurality of guiding surfaces, one such surface being located and adapted to guide the thread onto the godet in the rst instance, and the other guiding surfaces being adapted to remove the thread from the ⁇ godet and place it back on the godet so as to prevent tracking by placing it at a different position from that given by each of the other guiding surfaces.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
US186728A 1927-04-26 1927-04-26 Manufacture of artificial silk Expired - Lifetime US1950922A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BE353760D BE353760A (enrdf_load_html_response) 1927-04-26
US186728A US1950922A (en) 1927-04-26 1927-04-26 Manufacture of artificial silk

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US186728A US1950922A (en) 1927-04-26 1927-04-26 Manufacture of artificial silk

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US1950922A true US1950922A (en) 1934-03-13

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022001777A1 (de) 2022-05-20 2023-11-23 Oerlikon Textile Gmbh & Co. Kg Positionierhilfe für Galetten und/oder Walzen einer Aufwickelvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102022001777A1 (de) 2022-05-20 2023-11-23 Oerlikon Textile Gmbh & Co. Kg Positionierhilfe für Galetten und/oder Walzen einer Aufwickelvorrichtung

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BE353760A (enrdf_load_html_response)

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