US2924931A - Thread feeding stop device for yarn-forming machine - Google Patents

Thread feeding stop device for yarn-forming machine Download PDF

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Publication number
US2924931A
US2924931A US687532A US68753257A US2924931A US 2924931 A US2924931 A US 2924931A US 687532 A US687532 A US 687532A US 68753257 A US68753257 A US 68753257A US 2924931 A US2924931 A US 2924931A
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US
United States
Prior art keywords
thread
yarn
lever
pressure
pressure cylinder
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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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US687532A
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English (en)
Inventor
Kuhnrich Max
Lassig Gerhard
Schulze Willy
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.)
Spinnerei Karl Marx VEB
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Spinnerei Karl Marx VEB
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
Application filed by Spinnerei Karl Marx VEB filed Critical Spinnerei Karl Marx VEB
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Publication of US2924931A publication Critical patent/US2924931A/en
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Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H13/00—Other common constructional features, details or accessories
    • D01H13/14—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements
    • D01H13/16—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material
    • D01H13/18—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only
    • D01H13/183—Warning or safety devices, e.g. automatic fault detectors, stop motions ; Monitoring the entanglement of slivers in drafting arrangements responsive to reduction in material tension, failure of supply, or breakage, of material stopping supply only the yarn moving out of its normal path, e.g. by lateral diverting

Definitions

  • This invention relates to a thread control means and more particularly to a device for stopping the delivery of the individual strands of thread in the event of breakage thereof in machines used to produce multi-strand yarns.
  • inmachines' of this type it has been known to stop the delivery of'strands of thread in the event of breakage by moving the brokenthread laterally out of engagement withthe delivery shaft by means of a weight or an active resiliently urged pivotal lever.
  • This pivotal lever which is commonly designated as a removal lever, is tiltable transversely about a joint and is arranged such that it is held in an upright position and is movable out of this position upon thread breakage into a thread removal position when it is tilted by the slightest force.
  • Another known device is operative such that one arm of a lever is held by the tensioned thread and the other end of the arm upon thread breakage is effective to move the thread out of engagement with the delivery shafts.
  • This latter arm is formed with an oblique edge which engages the broken thread and permits the thread to slide laterally thereover.
  • this is accomplished by an arrangement including a pair of cooperating thread removal levers of which one of the levers is held by the tensioned thread and the other thread removal lever by means of its own weight is effective to move both levers upon breakage of the thread and thereby laterally shift the thread out of its normal pressure engagement with the pressure surface of the pressure roller.
  • the pressure roller is formed with a peripheral thread entrapment groove, having a conical bottom surface.
  • a strand of the thread is wound around the pressure surface at least once and the thread enters into single thread eye of the thread guide twice.
  • the removal lever performing the lateral shifting of the broken thread is formed with a forked end and a thread guiding arm.
  • a feature of the present invention is the provision of recesses on the upper edge of the conical surface which recesses are arranged either inclined of parallel to the axis of the cylinder.
  • Fig. l is partial end elevational view of a yarn winding machine embodying stop arrangement of the present invention.
  • FIG. 2 is a rear elevational view showing the elements of the stop arrangement in its operative position when the thread is whole.
  • Fig. 3 is similar to Fig. 2, showing the elements of the stop arrangement immediately after the thread has been broken.
  • Fig; 4 is'similar to Figs. 2 and 3 but showing the elements of the stop arrangement after the thread has been laterally shifted into thread entrapment groove of the pressure roller.
  • Fig.5 is a view of the pressure roller.
  • Fig. dis a cross sectional view of Fig. 5 taken substantially along the lines A-B.
  • the strand of thread 1 originates from a thread cop (not shown) or the like and is threaded through the eye of the thread guide 2, wound about the pressure cylinder 3 and again threaded through the eye of the thread guide 2, then between the p i ssure cylinder 3 and the delivery cylinder 4 from whence .it is guided to the yarn spindles (not shown).
  • the numeral 5 designates the operative thread strand condition sensing position of the removal lever and the numeral 5a its rest position (see Fig. 1).
  • a forked thread shifting lever 6 is operatively and movably associated with the removal lever 5, 5a and for the purpose of improving the thread guiding characteristics is also provided with a thread guiding limb 7.
  • a groove 8 Formed on the periphery of the pressure roller is a groove 8 having a conical bottom surface which tapers upwardly into the periphery.
  • the upwardly drawn thread end of the severed thread is designated as 1a (see Figs. 3 and 4).
  • the direction of rotation of the pressure cylinder is indicated by the arrow 9 and the arrow 10 shows the direction of the thread as it travels through the stopping device of the present invention.
  • elongate grooves 11 Provided in the groove 8 of the pressure cylinder are elongate grooves 11.
  • the operation of the stopping device is as follows:
  • the thread 1 originates from a thread cop or the like (not shown) and is threaded through the eye of threaded guide 2 and wound once about the pressure cylinder 3 and again threaded through the thread guide eye 2 in order that it may be guided between the pressure and delivery rollers 3 and 4 respectively.
  • the thread therefore travels in the direction of the arrow 10. Due to the fact that during normal winding the thread 1 is under tension the removal lever 5, 5a is held in the position shown in Figs. 1 and 2.
  • the fork ended lever 6 which is movably coupled with the lever 5, 5a is thread held in the position shown in Figs. 1 and 2 by the tension of the thread and guides the thread 1 between the forks such that the thread extends beneath the pressure surface of the pressure cylinder 3.
  • Lever 6 swings in a plane parallel to the axis of the pressure cylinders 3 and 4 about a shaft 12.
  • Lever 6 is coupled with lever 5 by means of an extension pin 13 which engages a loop 14 on lever 5.
  • the lever 5 swings on a pin 15 secured to shaft 12.
  • the downward pivotal movement of the removal lever 5, 5a also causes the lever 6 to swing in a plane parallel to the axis of pressure cylinders and normal to the lever 5, 5a to move the broken thread strand 1a into the confines of the groove 8 wherein it is entrapped.
  • the removal lever 5, 5a is returned to its upright position under the influence of the tension of the thread whereby the thread transporting means is automatically positioned since the forked end of the thread shift lever is effective to shift the thread over the conical surface 8 and beneath the pressure surface of pressure roller,
  • a multi-strand yarn-forming machine having an eye guide adapted to guide said yarn, a rotatable pressure cylinder spaced from said eye guide for stretching and looping said yarn to said eye guide and back to said pressure cylinder, a rotatable delivery roller in feeding contact with said pressure cylinder at theside of said pressure cylinder where said yarn is doubled ba'ck,'aring groove in said pressure cylinder larger than individual strands of said yarn adapted to grasp and wind up yarn brought into said groove, a yarn shifting :terrorismnber movable with respect to said pressure cylinder and responsive to the tension in said yarn adapted to shift said yarn between said eye and 'said pressure cylinder into 'said groove upon release of tension in said yarn, and out'of said groove upon resumption of tension in said arn,
  • said yarn-shifting member including gravity movable hook means movable to an upward position by tension in said yarn, and movable to a downward positionby release of tension in said yarn and subjection of said book means to gravitational force
  • said yarn-shifting means including fork means laterally movable with respect to said pressure cylinder in response to said hook means, said ring groove including a conical surface and a vertical surface, and a slot groove upon said conical surface'in said ring groove inclined to'the longitudinal axis of said pressure roller.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Forwarding And Storing Of Filamentary Material (AREA)
US687532A 1956-10-19 1957-10-01 Thread feeding stop device for yarn-forming machine Expired - Lifetime US2924931A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE357660X 1956-10-19
DE171256X 1956-12-17

Publications (1)

Publication Number Publication Date
US2924931A true US2924931A (en) 1960-02-16

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ID=25754794

Family Applications (1)

Application Number Title Priority Date Filing Date
US687532A Expired - Lifetime US2924931A (en) 1956-10-19 1957-10-01 Thread feeding stop device for yarn-forming machine

Country Status (4)

Country Link
US (1) US2924931A (de)
CH (1) CH357660A (de)
FR (1) FR1180961A (de)
GB (1) GB854852A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680300A (en) * 1969-12-03 1972-08-01 Schubert & Salzer Maschinen Process and apparatus for fiber band spinning

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AT260075B (de) * 1965-09-06 1968-02-12 Vyzk Ustav Bavlnarsky Vorrichtung zum Abzug des Garnes aus der Spinnvorrichtung einer Spinnanlage

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US941463A (en) * 1909-06-21 1909-11-30 Draper Co Twister stop-motion.
US1711092A (en) * 1928-04-26 1929-04-30 Whitin Machine Works Stop motion for spinning machines

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US941463A (en) * 1909-06-21 1909-11-30 Draper Co Twister stop-motion.
US1711092A (en) * 1928-04-26 1929-04-30 Whitin Machine Works Stop motion for spinning machines

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3680300A (en) * 1969-12-03 1972-08-01 Schubert & Salzer Maschinen Process and apparatus for fiber band spinning

Also Published As

Publication number Publication date
CH357660A (de) 1961-10-15
FR1180961A (fr) 1959-06-10
GB854852A (en) 1960-11-23

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