US2538518A - Stop-motion mechanism for thread working machines - Google Patents

Stop-motion mechanism for thread working machines Download PDF

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Publication number
US2538518A
US2538518A US33262A US3326248A US2538518A US 2538518 A US2538518 A US 2538518A US 33262 A US33262 A US 33262A US 3326248 A US3326248 A US 3326248A US 2538518 A US2538518 A US 2538518A
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US
United States
Prior art keywords
threads
stop
thread
machine
frame
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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US33262A
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English (en)
Inventor
Heijink Abraham
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.)
KONINK TRICOTFABRIEK G J WILLI
Koninklijke Tricotfabriek G J Willink N V
Original Assignee
KONINK TRICOTFABRIEK G J WILLI
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Publication date
Application filed by KONINK TRICOTFABRIEK G J WILLI filed Critical KONINK TRICOTFABRIEK G J WILLI
Application granted granted Critical
Publication of US2538518A publication Critical patent/US2538518A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions

Definitions

  • This invention relates" to stop motiori -mechani'sms'for thread working machines; anii more particularly has for its-object to” provide" an irrrproved device for stopping-a warp-knittingor other'm'achine for working a series of fine delicate threads;upon'breakage' of a thread.
  • Hitherto devices for" stoppingthread working machinestupon: breakagebfa. thread have been used, comprising a series of soiicail'led" lamel's through which the individualithreads' arepassed and which upon breakage of. a" thread c'ausethe machine'to be stopped.
  • These'known devices have various disadvantages. such'asthe laborious threading of the individual threads through the Iamels and thegeneration of static electricity by friction on the threads, and in particular they are not adapted "for use with machines for working fine delicate threads, such as rayon and'ithe'likefi'laments, which are liable to be damaged by the continuous frictional contactwith' such lamels duringnormaloperation'.
  • the present invention provides a device :for the purpose referred to, in which the threadsduring normal operation of the machine remain entirely out ofcontact with any element of such device and uponbreakage are only called upon. to exert a very small force for bringingv about the actuation of the stopping'means'.
  • a warpeknittingframe or other machine for working threads particularly a series of fine delicate threads
  • a device for stopping such machine upon breakage of a thread said device comprising means extending along said threads and arranged for creating a continuous stream of air or other gaseous medium transverse to said threads, continuously moving catcher means extending along said threads at one side'thereof, a movable member also extending along said threads at the last mentioned side thereof and in spaced relation thereto and means for stopping said warp-knitting or the like machine, said stooping means being adapted to be actuated by said movable member in response to a movement thereof caused by a broken thread being carried by said stream of air or other gaseous medium against said catcher means and being caught and so moved thereby as to engage and displace said member.
  • the aforesaid device comprises a nozzle extending along said threads for continuous y directing a stream of air or other gaseous medium thereon, a continuously rotating .grclaimsa (Cl..66-163')' cardediroller extending along said threads-atv the opposite i side thereof, a' rocking-frame including at least one wire or rod also extending along: said tnre'adsat the last mentioned side'thereofsi and in spa'ced relation-thereto; and electric -stoppingroller to be deflected thereby under tensiorrab'out sa id wi re or rod;
  • 1 represents a series of threads, for instan'c'ethe' warp or awarp 'kni'ttingframe, not shown;
  • Extending along" said series on" one side thereof',' is a'pressure-air conduit shaving a slotshaped nozzle 2""arran'ged" for continuously directing a ribbon-like stream of ai'ron said threads during. operation of th'emachine.
  • Facing said nozzle. is a continuously rotating roller '4 mounted onyce'n'tr'esAll and.
  • saidlroll'er also extending along said series of thread's 'but' at the oppositesidethereof and being provided with carding needles 6 or other catcher means, designedrfor co-operation in'a manner to behereinafter described, with a light easily movable rocking-frame extending along the series of threads at the same side thereof as the roller 4.
  • said rocking-frame consists of a rod or tube 1 pivotably supported at its ends on centres and carrying adjacent said ends transverse yokes 8 which are connected together by thin rods or wires 9, I8, the frame being so arranged relative to said carded roller 4,
  • the wire 9 extends paral el to and at a relative y small distance from said. carded roller 4, the opposite rod or wire ll! of said rocking-frame being: connected to a small rod H controlling a snring contact l2 for co-oneration with a s cond. ontact 3, said contacts bein arranged in an e ectric circuit containin a re av or other device for contro ling t e power supply to the driving m ans of the machine.
  • the threads are not in frictional contact with any element of the device and in case of breakage are only called upon to exert the very small force required to rock the light easily movable frame and to close the electric contacts, which as they only serve to establish a relay-circuit may also be very light, the device is particularly adapted for use in machines working fine delicate threads, for which problem up to now no adequate solution has been proposed.
  • Stop means for textile machines and the like operative in response to strand failure comprising an element normally positioned adjacent a portion of the strand as it is moved along the normal path of travel determined by the machine, said element being bodily movable in a direction transverse to said strand portion, means operable by said movable member, upon movement thereof, to effect stoppage of the machine, a rotatively operated carded member positioned adjacent said strand portion, and means for maintaining a continuous flow of a gaseous medium operative upon strand failure forcibly to move the relaxed portion thereof laterally into engagement with said carded member to be caught and tautened thereby, said carded member being arranged with respect to said movable element so as to cause said tautened strand portion to move said element for operating said stopping means.
  • Stop means for textile machines manipulating a plurality of substantially parallel strands comprising a rocking frame including at least one wire normally positioned to extend adjacent and along a portion of said strands as they move along the normal path of travel determined by the machine, means operable by said rocking frame, upon movement thereof, to effect stoppage of the machine, a rotatively operated carded member positioned adjacent said strand portion and means for maintaining a continuous flow of a gaseous medium operative upon failure of at least one strand forcibly to move the relaxed portion thereof laterally into engagement with said carded member to be caught and tautened thereby, said carded member being arranged with respect to said rocking frame so as to cause said tautened strand portion to rock said frame for operating said stopping means.
  • Stop means for textile machines manipulating a plurality of substantially parallel strands comprising a rocking frame including at least one wire normally positioned to extend adjacent and along a portion of said strands as they move along the normal path of travel determined by the machine, electrically operated means to effect stoppage of the machine, 'a single circuit control switch element adapted to be operated by said rocking frame upon movement thereof to actuate said stopping means, a rotatively operated carded member positioned adjacent" said strand portion, and means for maintaining a continuous flow of a gaseous medium operative upon strand failure forcibly to move the relaxed strand portion laterally into engagement with said carded member to be caught and tautened thereby, said carded member being arranged with respect to said rocking frame, so as to cause said tautened strand portion to move said frame for operating said switch element.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US33262A 1947-06-17 1948-06-16 Stop-motion mechanism for thread working machines Expired - Lifetime US2538518A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL2538518X 1947-06-17

Publications (1)

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US2538518A true US2538518A (en) 1951-01-16

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ID=19874640

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US33262A Expired - Lifetime US2538518A (en) 1947-06-17 1948-06-16 Stop-motion mechanism for thread working machines

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US (1) US2538518A (en, 2012)
BE (1) BE482764A (en, 2012)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902534A (en) * 1973-07-25 1975-09-02 Nishiki Sangyo Apparatus for automatically stopping weaving machine upon breakage of warp yarn

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189700767A (en) * 1897-01-11 1897-09-18 Ernst Dietzsch Improvements in or relating to Looms.
US628731A (en) * 1897-03-15 1899-07-11 Alfred Wilkinson Warp stop-motion for looms.
US1472500A (en) * 1923-10-30 A cobporation
US2438365A (en) * 1944-11-17 1948-03-23 Alfred Hofmann & Company Stop means for textile apparatus and the like

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1472500A (en) * 1923-10-30 A cobporation
GB189700767A (en) * 1897-01-11 1897-09-18 Ernst Dietzsch Improvements in or relating to Looms.
US628731A (en) * 1897-03-15 1899-07-11 Alfred Wilkinson Warp stop-motion for looms.
US2438365A (en) * 1944-11-17 1948-03-23 Alfred Hofmann & Company Stop means for textile apparatus and the like

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3902534A (en) * 1973-07-25 1975-09-02 Nishiki Sangyo Apparatus for automatically stopping weaving machine upon breakage of warp yarn

Also Published As

Publication number Publication date
BE482764A (en, 2012)

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