US2825624A - Method for indicating the termination of a yarn cake winding - Google Patents

Method for indicating the termination of a yarn cake winding Download PDF

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US2825624A
US2825624A US471833A US47183354A US2825624A US 2825624 A US2825624 A US 2825624A US 471833 A US471833 A US 471833A US 47183354 A US47183354 A US 47183354A US 2825624 A US2825624 A US 2825624A
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cake
yarn
filament
termination
spinneret
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US471833A
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Jr Horace P Fry
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Akzo Nobel UK PLC
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American Viscose Corp
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Assigned to WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. reassignment WALTER E. HELLER & COMPANY, INC., A CORP. OF DEL. AGREEMENT WHEREBY AETNA RELEASES AVTEX FROM ALL MORTAGES AND SECURITY INTERESTS IN SAID INVENTIONS AS OF JANUARY 11,1979, AND ASSIGNS TO ASSIGNEE THE ENTIRE INTEREST IN SAID MORTAGE AGREEMENT TO ASSIGNEE (SEE RECORDS FOR DETAILS). Assignors: AETNA BUSINESS CREDIT, INC., A CORP. OF N.Y., AVTEX FIBERS, INC, A CORP. OF NY, KELLOGG CREDIT CORP., A CORP. OF DEL.
Assigned to WESTERN AND SOUTHERN LIFE INSURANCE COMPANY THE C/O NEW ENGLAND MUTUAL LIFE INSURANCE COMPANY, NEW ENGLAND MUTUAL LIFE INSURANCE COMPANY, PAUL REVERE LIFE INSURANCE COMPANY THE C/O THE PAUL REVERE EQUITY MANAGEMENT COMPANY, PROVIDENT ALLIANCE LIFE INSURANCE COMPANY C/O THE PAUL REVERE EQUITY MANAGEMENT COMPANY, JOHN HANCOCK MUTUAL LIFE INSURANCE COMPANY, BALBOA INSURANCE COMPANY C/O THE PAUL REVERE EQUITY MANAGEMENT COMPANY reassignment WESTERN AND SOUTHERN LIFE INSURANCE COMPANY THE C/O NEW ENGLAND MUTUAL LIFE INSURANCE COMPANY AS SECURITY FOR INDEBTEDNESS RECITED ASSIGNOR GRANTS , BARGAINS, MORTGAGES, PLEDGES, SELLS AND CREATES A SECURITY INTEREST WITH A LIEN UNDER SAID PATENTS, SUBJECT TO CONDITIONS RECITED. (SEE DOCUMENT FOR DETAILS). Assignors: AVTEX FIBERS INC. A NY CORP.
Assigned to KELLOGG CREDIT CORPORATION A DE CORP. reassignment KELLOGG CREDIT CORPORATION A DE CORP. AGREEMENT WHEREBY SAID HELLER AND RAYONIER RELEASES ALL MORTGAGES AND SECURITY INTERESTS HELD BY AVTEX ON APRIL 28, 1978, AND JAN. 11, 1979, RESPECTIVELY AND ASSIGNS ITS ENTIRE INTEREST IN SAID MORT-AGAGE AGREEMENT TO ASSIGNEE (SEE RECORD FOR DETAILS) Assignors: AVTEX FIBERS INC., A NY CORP., ITT RAYONIER INCORPORATED, A DE CORP., WALTER E. HELLER & COMPANY, INC. A NY CORP.
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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
    • 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
    • D01D7/00—Collecting the newly-spun products
    • D01D7/02—Collecting the newly-spun products in centrifugal spinning pots

Definitions

  • This invention relates to a method of selectively eliminating the innermost layers of a cake or package of synthetic filament and more particularly to the provision or" controlled slugs in the filament as it is produced at the spinning machine.
  • the present invention has for its primary object the provision of a method for imparting structural changes into filaments during the spinning of the same.
  • a further object of the invention is to provide a method for inducing slubs or spurts of spinning fluid through the spinneret which in turn form bumps or slubs on the yarn so that the winding machines will automatically stop due to actuation of the slub catcher.
  • a further object of the invention is to provide a method of inducing slubs in the extruded yarn filaments when a yarn cake has been substantially completed.
  • a further object of the invention is to provide a method for eliminating the damaged turns adjacent the bore of a yarn package.
  • FIG. 1 is a fragmentary detail of a spinning machine partly schematic showing a preferred embodiment of the present invention
  • Figure 2 is a transverse section as seen at 11-11 of Figure 1;
  • Figure 3 illustrates a modified form of the apparatus of Figure l.
  • Figure 4 shows the introduction of the slubs to the final windings of a yarn cake.
  • the invention comprises essentially the provision of accelerating instantaneously the speed of the pump shaft on the spinning machine to induce a series of slubs in the yarn at a predetermined time before each cake is completed.
  • the slubs which occur near the last internal windings of the cake actuate the slub catching device on the winding machine, thus automatically interrupting further winding and permitting the operator to remove the cake before any damaged or inferior windings are transferred from the cake onto the cone or beam.
  • apparams for practicing the method of the present invention is shown in Figures 1 and 2 and comprises an auxiliary drive for the main pump shaft 10.
  • the drive for the metering pump 11 is through shaft 10, spur gears 12 and 13 to shaft 14. From thence the pump 11 is driven through mating spur gears 15 and 16. Viscose is thereby pumped through conduit 17 to filter 18 and spinneret 19 positioned in the conventional coagulating bath 2%.
  • the operator intentionally produces slubs S, S in the yarn by engaging clutch 25 through actuation of lever 26. This operation transfers the driving connection to shaft 27 journaled at 28, 28 thence through eiiptical gears 29 and 30 to shaft 14.
  • the minimum pitch diameter of gear 313 is equal to or greater than the pitch diameter of gear 12 so that a cyclic increase in rotational speed is imparted to shaft 14 in accordance with the contour of gears 2? and 30. Since gears 12 and 13 are in constant mesh, I provide an over-running clutch 31 of any conventional variety so that, although gears 12 and 13 turn at constant speed to turn shaft 14 through the clutch 31, they are not effective to turn shaft 14 when gears 29 and 313 are engaged.
  • the apparatus of Figures 1 and 2 is semi-automatic in that the operator need only throw lever 26 to induce the slubs in the yarn. The slubs will, of course, continue to be spun until clutch 25 is disengaged.
  • the same result can be achieved in a complete manual operation with the apparatus shown in Figure 3.
  • the main driveshaft 10 operates the pump 11 through gears 12, 13 and 15, 16 as described in connection with Figure 1.
  • a ratchet 35 is keyed to the shaft 14 on the other side of over-running clutch 31.
  • a lever 36 is pivotally mounted on shaft 14 and straddles ratchet 35.
  • Pawl 37 connects lever 36 with the ratchet so that the operator can intermittently increase the speed of shaft 14 by actuating the lever 36 back and forth. Engagement between pawl 37 and ratchet 35 transmits torque from the lever to the shaft in the direction of rotation of shaft 14 so that the speed of the shaft and, consequently, the pump is increased to produce the slubs in the same manner as described previously.
  • the present invention provides a simple and satisfactory manner for automatically inducing slubs at the desired position in the extruded yarn, and it will be understood that the apparatus can be made fully automatic provided the time required to spin the desired amount of slub-free yarn is known.
  • the method of providing a yarn cake with structut-a1 means for use intindicating the termination ofha yarn cake winding including the steps of extruding a filament-forming material through a spinneret at a substantially v:uniform rate,tcollecting-the extruded filament as.:a "continuous yarn in :wound cake form, warying the fiowcof filament-forming rnaterials throughathe vspinneret at intermittent intervals as the termination .of the cake winding is approached, and continuing theintermittently varying flow:offilament-forming material through the spinneret until :the final yarn cake windings are completed.
  • the method .of providing a yarn cake with structuraltmeans for-.use in indicating the stermination of a yarn tcaket winding including the steps of :extruding a filament-forming material through a spinneret :at a :substantiallynniform rate, 1 collecting the extruded filament as a-;continuoussyarn-in wound cake form, increasing the flow of filament-forming material throughz-the spinneret at intermittent intervals as the termination-of the cake winding approached; and continuing :the intermittently increased flow of filament-forming material through the aspinneret until the final yam cake windings are completed.
  • the method of providing a yarn cake with structural means for use in indicating the termination of a yarn cake Winding including the steps of extruding a filament-forming material through a spinneret at a substantially uniform rate, collecting the extruded filament as a continuous yarn in a wound cake form, altering the cross-sectional shape of the extruded filament at intermittent "intervals along its length as the termination of the yarn cake winding is approached, .and continuing the intermittent alteration of the filament cross-sectional shape pntil the final yarn cake-windings are completed.

Description

. March 4, 1958 H.-P. FRY, JR
METHOD FOR INDICATING THE TERMINATION OF A YARN CAKE WINDING Filed Nov. 29, 1954 w'w u iag United rates Faterrt METHUD FER EJDKCATRIG THE TERMINATION F A YARN CAKE VJINDING Horace 1. Fry, a., West Chester, Pa, assignor to American Viscose Corporation, Philadelphia, Pa., 2 corporation of Delaware Application November 29, 1954, Serial No. 471,833
3 Claims. (Cl. 18-54) This invention relates to a method of selectively eliminating the innermost layers of a cake or package of synthetic filament and more particularly to the provision or" controlled slugs in the filament as it is produced at the spinning machine.
When artificial filaments are produced on the boxtype spinning machine, the yarn strand, after being properly treated and washed, is spun into cakes in the conventional spinning pots. These cakes, when completed, are individually removed from the pots and then subjected to further liquid treatment and drying after which the yarn is unwound from the cakes and in turn wound on bobbins, cones, beams or other suitable mandrels in accordance with the customers needs. I have found that in the process of handling and treating the cakes from the time they are removed from the spinning pots to the time when they are wound onto cones or bobbins, the inner layers of windings of the cakes are frequently damaged so that it may be impossible or impractical to use up these damaged layers or windings. Such damage may occur from the actual manual manipulation of the cakes or it may result from damage due to the insertion of rods or mandrels through the cakes in the course of various processing and drying steps.
The present invention has for its primary object the provision of a method for imparting structural changes into filaments during the spinning of the same.
A further object of the invention is to provide a method for inducing slubs or spurts of spinning fluid through the spinneret which in turn form bumps or slubs on the yarn so that the winding machines will automatically stop due to actuation of the slub catcher.
A further object of the invention is to provide a method of inducing slubs in the extruded yarn filaments when a yarn cake has been substantially completed.
A further object of the invention is to provide a method for eliminating the damaged turns adjacent the bore of a yarn package.
Further objects will be apparent from the specification and drawings in which:
Figure 1 is a fragmentary detail of a spinning machine partly schematic showing a preferred embodiment of the present invention;
Figure 2 is a transverse section as seen at 11-11 of Figure 1;
Figure 3 illustrates a modified form of the apparatus of Figure l; and
Figure 4 shows the introduction of the slubs to the final windings of a yarn cake.
The invention comprises essentially the provision of accelerating instantaneously the speed of the pump shaft on the spinning machine to induce a series of slubs in the yarn at a predetermined time before each cake is completed. When the yarn in the cake is being unwound in the beaming machine or other winding machine, the slubs which occur near the last internal windings of the cake actuate the slub catching device on the winding machine, thus automatically interrupting further winding and permitting the operator to remove the cake before any damaged or inferior windings are transferred from the cake onto the cone or beam.
, Referring more particularly to the drawings, apparams for practicing the method of the present invention is shown in Figures 1 and 2 and comprises an auxiliary drive for the main pump shaft 10. In normal operation, the drive for the metering pump 11 is through shaft 10, spur gears 12 and 13 to shaft 14. From thence the pump 11 is driven through mating spur gears 15 and 16. Viscose is thereby pumped through conduit 17 to filter 18 and spinneret 19 positioned in the conventional coagulating bath 2%. When the cake C is nearly completed, the operator intentionally produces slubs S, S in the yarn by engaging clutch 25 through actuation of lever 26. This operation transfers the driving connection to shaft 27 journaled at 28, 28 thence through eiiptical gears 29 and 30 to shaft 14. The minimum pitch diameter of gear 313 is equal to or greater than the pitch diameter of gear 12 so that a cyclic increase in rotational speed is imparted to shaft 14 in accordance with the contour of gears 2? and 30. Since gears 12 and 13 are in constant mesh, I provide an over-running clutch 31 of any conventional variety so that, although gears 12 and 13 turn at constant speed to turn shaft 14 through the clutch 31, they are not effective to turn shaft 14 when gears 29 and 313 are engaged.
It will thus be understood that for every revolution of elliptical gear 30, two shots or slugs of viscose are injected through spinneret 19 by reason of the increased rotational speed of shaft 14. This in turn provides the slubs S, S in the yarn. As shown in Figure 4, these slubs are positioned at the portion of the yarn which is located sulficiently radially inward from the bore of the cake to have escaped any possible damage in processing. When the slubs or the first one of them reaches the slub catcher in the winding machine, the stop motion device automatically stops the machine so that there is no danger of winding any damaged yarn onto the cone or beam as the case may be.
The apparatus of Figures 1 and 2 is semi-automatic in that the operator need only throw lever 26 to induce the slubs in the yarn. The slubs will, of course, continue to be spun until clutch 25 is disengaged. The same result can be achieved in a complete manual operation with the apparatus shown in Figure 3. In this construction the main driveshaft 10 operates the pump 11 through gears 12, 13 and 15, 16 as described in connection with Figure 1. However, instead of intermittently increasing the speed of shaft 14 through the medium of elliptical gears, a ratchet 35 is keyed to the shaft 14 on the other side of over-running clutch 31. A lever 36 is pivotally mounted on shaft 14 and straddles ratchet 35. Pawl 37 connects lever 36 with the ratchet so that the operator can intermittently increase the speed of shaft 14 by actuating the lever 36 back and forth. Engagement between pawl 37 and ratchet 35 transmits torque from the lever to the shaft in the direction of rotation of shaft 14 so that the speed of the shaft and, consequently, the pump is increased to produce the slubs in the same manner as described previously.
The present invention provides a simple and satisfactory manner for automatically inducing slubs at the desired position in the extruded yarn, and it will be understood that the apparatus can be made fully automatic provided the time required to spin the desired amount of slub-free yarn is known.
Having thus described my invention, I claim:
1. The method of providing a yarn cake with structut-a1 means for use intindicating the termination ofha yarn cake winding including the steps of extruding a filament-forming material through a spinneret at a substantially v:uniform rate,tcollecting-the extruded filament as.:a "continuous yarn in :wound cake form, warying the fiowcof filament-forming rnaterials throughathe vspinneret at intermittent intervals as the termination .of the cake winding is approached, and continuing theintermittently varying flow:offilament-forming material through the spinneret until :the final yarn cake windings are completed.
'2. The method .of providing a yarn cake with structuraltmeans for-.use in indicating the stermination of a yarn tcaket winding including the steps of :extruding a filament-forming material through a spinneret :at a :substantiallynniform rate, 1 collecting the extruded filament as a-;continuoussyarn-in wound cake form, increasing the flow of filament-forming material throughz-the spinneret at intermittent intervals as the termination-of the cake winding approached; and continuing :the intermittently increased flow of filament-forming material through the aspinneret until the final yam cake windings are completed.
3. The method of providing a yarn cake with structural means for use in indicating the termination of a yarn cake Winding including the steps of extruding a filament-forming material through a spinneret at a substantially uniform rate, collecting the extruded filament as a continuous yarn in a wound cake form, altering the cross-sectional shape of the extruded filament at intermittent "intervals along its length as the termination of the yarn cake winding is approached, .and continuing the intermittent alteration of the filament cross-sectional shape pntil the final yarn cake-windings are completed.
References 1Ci te d inthe-fileof this patent UNITED STATES PATENTS 2,517,946 Kohorn Aug. 48, 1950 "2,624,070 '-Mc Dermo tt Jan. 6,4953 2,671,929 Gaylord Mar. '16, 1954- 2,'7'12,489 Abbott July 5, 1955

Claims (1)

1. THE METHOD OF PROVIDING A YARN CAKE WITH STRUCTURAL MEANS FOR USE IN INDICATING THE TERMINATION OF A YARN CAKE WINDING INCLUDING THE STEPS OF EXTRUDING A FILAMENT-FORMING MATERIAL THROUGH A SPINNERET AT A SUBSTANTIALLY UNIFORM RATE, COLLECTING THE EXTRUDED FILAMENT AS A CONTINUOUS YARN IN WOUND CAKE FROM, VARYING THE FLOW OF FILAMENT-FORMING MATERIALS THROUGH THE SPINNERET AT INTERMITTENT INTERVALS AS THE TERMINATION OF THE CAKE WINDING IS APPROACHED, AND CONTINUING THE INTERMITTENTLY VARYING FLOW OF FILAMENT-FORMING MATERIAL THROUGH THE SPINNERET UNTIL THE FINAL YARM CAKE WINDINGS ARE COMPLETED.
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3126699A (en) * 1962-10-09 1964-03-31 Process for preparing
US3311687A (en) * 1960-12-06 1967-03-28 Scragg Frederick Process for manufacturing a monofilament

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517946A (en) * 1946-10-03 1950-08-08 Kohorn Henry Von Method of producing yarn
US2624070A (en) * 1951-06-04 1953-01-06 American Viscose Corp Spinning or extrusion apparatus
US2671929A (en) * 1949-11-03 1954-03-16 American Viscose Corp Apparatus for producing filaments of uneven denier
US2712489A (en) * 1948-09-29 1955-07-05 Jr William G Abbott Method of forming staple-length fibers by extrusion

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2517946A (en) * 1946-10-03 1950-08-08 Kohorn Henry Von Method of producing yarn
US2712489A (en) * 1948-09-29 1955-07-05 Jr William G Abbott Method of forming staple-length fibers by extrusion
US2671929A (en) * 1949-11-03 1954-03-16 American Viscose Corp Apparatus for producing filaments of uneven denier
US2624070A (en) * 1951-06-04 1953-01-06 American Viscose Corp Spinning or extrusion apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3311687A (en) * 1960-12-06 1967-03-28 Scragg Frederick Process for manufacturing a monofilament
US3126699A (en) * 1962-10-09 1964-03-31 Process for preparing

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