US3605396A - Device for inserting filament into a radially clamping grip - Google Patents

Device for inserting filament into a radially clamping grip Download PDF

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Publication number
US3605396A
US3605396A US881357A US3605396DA US3605396A US 3605396 A US3605396 A US 3605396A US 881357 A US881357 A US 881357A US 3605396D A US3605396D A US 3605396DA US 3605396 A US3605396 A US 3605396A
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US
United States
Prior art keywords
yarn
grip
suction tube
tube
radially
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
US881357A
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English (en)
Inventor
Claude Guignard
Jean Chatelaine Pellaton
Maurice Poull
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.)
Electrospin Corp
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Electrospin 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
Application filed by Electrospin Corp filed Critical Electrospin Corp
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Publication of US3605396A publication Critical patent/US3605396A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H15/00—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing
    • D01H15/007—Piecing arrangements ; Automatic end-finding, e.g. by suction and reverse package rotation; Devices for temporarily storing yarn during piecing for two-for-one twisting machines

Definitions

  • the present invention relates to a device for inserting a yarn into a radially clamping grip at the time of startup or in piecing up after a yarn break.
  • the present invention provides a simple device for performing the above operation without complicated actions and with means which can readily be automated.
  • the device comprisese a suction tube and a propulsion tube, one of the ends of the latter being intended for connection to a source of fluid under pressure and the other end forming an ejection nozzle for the fluid.
  • the two tubes are secured together in a relative position such that the negative pressure set up by the flow of fluid out of the ejection nozzle generates in the suction tube an airflow in the same direction as the fluid flow, the pressure of the fluid being such that the airflow is able to entrain the yarn through the suction tube by aspiration.
  • FIG. 1 is a plan view of a preferred embodiment
  • FIGS. 2 to 5 illustrate the manual operation of the device according to one embodiment by showing four successive positions it will occupy in relation to a radially clamping grip
  • FIG. 6 shows a plan view of a first modification constituting the preferred embodiment
  • FIGS. 7 to 9 illustrate the sequential positions occupied by the modification in FIG. 6,
  • FIGS. 10 and 11 are plan views of two other modifications.
  • the inserting device comprises a cylindrical suction tube 1 open at its two ends, a rear or aspiration end 2 and a front end 3, and a propelling tube 4 which extends into the suction tube 1.
  • Propelling tube 4 has two ends 5 and 6 of which the first, i.e. the inner end 5, is located between the ends 2 and 3 of the suction tube 1, and of which the second, i.e. the outer end 6, is intended to be connected by a flexible tube 7 to a source of fluid under superatmospheric pressure (not shown).
  • Propelling tube 4 therefore extends laterally through the -wall 8 of suction tube 1 and is bent so that the fluid under pressure may be injected in a direction parallel to the axis of suction tube 1, as indicated by the arrow 9, the end 5 serving as a nozzle for ejecting the fluid.
  • the end 5 is radially offset from the axis of suction tube 1 so as to clear, to the greatest possible extent, the internal through flow cross-section of tube 1.
  • the propelling tube 4 can be secured in fluidtight relation to the suction tube wall 8 by any known means, preferably by welding or adhesive bonding.
  • the pressure of the fluid ducted by the flexible tube 7 is so chosen that the jet of fluid produces by a Venturi effect a negative or subatmospheric pressure in the suction tube 1 in the region of the inner end 5, which negative pressure causes outside air to be sucked in through the rear end 2 and to be ejected through the front end 3. If the front end 3 were to be closed off, for instance, by being covered with a finger, as shown in FIGS. 2 and 3, the intake of outside air would cease and instead fluid would be discharged through the rear end 2, as indicated by arrows 12 and 13 in FIGS. 2 and 3; the tube 1 then has a blowing action via its rear end 2.
  • FIGS. 25 The operation of this device, generally designated 10, is illustrated by FIGS. 25 where it has been assumed that the device is being used to insert a yarn into a radially clamping grip, generally designated 20' such as is described in US. Pat. 3,372,537.
  • the grip 20 comprises a bundle of resilient filaments 21 which is surrounded by a damping sleeve 22, the filaments 21 each have a bent portion so as to form a bow-net 23, which is secured to a crown 24 whose inner configuration is flared to form an inlet funnel 25.
  • the Whole is housed in a cylindrical body 26 formed with an outlet orifice 27.
  • the grip 20 is rotatably driven around the axis of the bundle of filaments 21; it receives, at its inlet 25, fibers which are conveyed thereto individually and it delivers, at its outlet 27, a spun yarn resulting from the twisting of these fibers.
  • any retaining member e.g. an eye 31, so that a piece 32 of yarn remains gripped in the bundle 21 of resilient filaments.
  • the spinning of the grip 20 is stopped, the device 10 is then held between the thumb 33 and the middle finger 34, while the index finger 35 blocks the front end 3 (FIG. 2).
  • the fluid under pressure which will be assumed to be compressed air, cannot produceany suc tion effect through the suction tube 1; instead, air is discharged through the rear end 2.
  • the device 10 is then introduced into the stationary grip 20 through the inlet 25 thereof (FIG. 3), the rear end 2 of the suction tube 1 radially expanding the aperture through the center of the resilient filaments of the bundle 21.
  • the piece of yarn 32 is thereby released and under the action of the discharged air, it is expelled from the grip 20.
  • the index finger 35 is raised to unblock the front end 3; air is sucked in and entrains with it the yarn 30, causing it to move forward in the suction tube 1 toward the front end 3.
  • the device 10 is then extracted upwardly from the grip 20 (FIG. 5) so that the bundle 21 closes on the yarn 30 in a reinserted position, rotation of the grip 20 is reestablished and twisting is resumed.
  • the device must be introduced through the inlet funnel 25 of the grip and once it has served its purpose it becomes completely free again and can be used elsewhere to insert another yarn into another grip.
  • the modification shown in FIG. 6 can be inserted only via the rear of the grip, that is from beneath it.
  • This second embodiment differs from the previous one as follows; the propelling tube 4a instead of being bent at right-angles, is bent obliquely for reasons of space and the rear end 2a of the suction tube It: is provided with an intake funnel 36.
  • the propelling tube 4a may be secured to the wall 8a of suction tube 1a in any desired manner as in the first embodiment.
  • the grip must be such as to allow insertion of the suction tube 1a through the outlet of the grip.
  • each filament of the bunch 21a is shown with an outwardly directed bend to form an outlet bow-net 37.
  • a grip of this configuration is shown and fully described in copending application Ser.
  • FIG. 10 shows a modfication of that shown in FIG. 6 with the propelling tube 4a extending into the suction tube 1a through the rear end 29 rather than through the wall 8a.
  • the operation of this modification is similar to that shown in FIG. 6.
  • FIG. 11 a further modification is shown where operation is similar to the preferred embodiment of FIG. 1 and permits introduction of the device only through the front end 25 of the grip.
  • This modification differs only in the relative positions of the suction tube 11; and of the propelling tube 4b.
  • the propelling tube 4 which extends into the suction tube 1 (FIG. 1), here it is the opposite, and the front end 3b is placed very near the ejection nozzle 5b.
  • compressed air is advantageously used as the fluid under pressure although, of course, any other gas may be suitable.
  • a liquid under pressure e.g. water
  • the device then operates like a water aspirator which 4 sucks the yarn which it is required to insert into the grip.
  • a device for inserting into the through aperture of said grip an end of a yarn to which individual fibers can be fed comprising:
  • a device as set forth in claim 1 wherein said means for feeding an end of a spun yarn into said aperture includes means for entraining the yarn by movement of a fluid under pressure.
  • a device for reinserting a yarn end into said grip comprising (a) a suction tube having an internal cross section greater than that of the yarn being spun and an external cross section sufliciently small that it can be inserted coaxially into and radially expand said grip sufliciently to permit passage of the yarn therethrough,
  • a propulsion tube having one end for connecting to a source of fluid under pressure and a second end forming an ejection nozzle for the fluid
  • suction tube and said propulsion tube being secured to one another in a relative position such that the negative pressure set up by the flow of the fluid out of said ejection nozzle generates in the suction tube an air flow in the same direction as the fluid flow
  • suction tube has an aspiration end, and wherein said propulsion tube extends into said suction tube through said aspiration end.
  • suction tube is provided with a funnel at said aspiration end.
  • suction tube extends into said propulsion tube through the sidewall thereof, one end of said suction tube being placed near said ejection nozzle.
  • a method of piecing up yarn in a radially clamping grip which includes resilient filaments from the inlet end which comprises:
  • a method of piecing up yarn in a radially clamping grip which includes resilient filaments from the outlet end which comprises (a) forcing the resilent filaments apart radially,
  • DONALD E. WATKINS Primary Examiner U.S. Cl. X.R.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US881357A 1968-12-24 1969-12-02 Device for inserting filament into a radially clamping grip Expired - Lifetime US3605396A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1925568A CH512599A (fr) 1968-12-24 1968-12-24 Dispositif d'insertion d'un fil dans une pince à serrage radial

Publications (1)

Publication Number Publication Date
US3605396A true US3605396A (en) 1971-09-20

Family

ID=4438330

Family Applications (1)

Application Number Title Priority Date Filing Date
US881357A Expired - Lifetime US3605396A (en) 1968-12-24 1969-12-02 Device for inserting filament into a radially clamping grip

Country Status (5)

Country Link
US (1) US3605396A (cs)
CH (1) CH512599A (cs)
DE (1) DE1965796A1 (cs)
FR (1) FR2027066B1 (cs)
GB (1) GB1263330A (cs)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3822539A (en) * 1972-10-24 1974-07-09 Ici Ltd Threadable yarn treatment tube
US3875735A (en) * 1972-01-21 1975-04-08 Platt International Ltd Threading bushes
US3939639A (en) * 1973-06-05 1976-02-24 Bayer Aktiengesellschaft Spin stretching and spin stretch texturing of multifilament yarns
US3991545A (en) * 1975-01-17 1976-11-16 Heberlein Maschinenfabrik Pneumatic auxiliary device
US4047372A (en) * 1975-09-18 1977-09-13 Hamel Gmbh Zwirnmaschinen Pneumatic threader for twisting apparatus
US4059948A (en) * 1975-05-23 1977-11-29 Asa S.A. Automatic threading false-twist spindle
US4127983A (en) * 1976-10-27 1978-12-05 Palitex Project Company Gmbh Yarn guiding and threading mechanisms for use with textile yarn processing machines
US4598539A (en) * 1983-10-26 1986-07-08 Hans Stahlecker Yarn piecing arrangement for an open-end friction spinning machine
US4631912A (en) * 1985-05-09 1986-12-30 Burlington Industries, Inc. Initial threading for vacuum spinning
US4856691A (en) * 1987-03-16 1989-08-15 Tsudakoma Corp. Yarn guide device
US4885906A (en) * 1987-09-23 1989-12-12 Vyzkumny Ustav Bavlnarsky Device for automatically spinning-in yarn
US20050272363A1 (en) * 2004-05-17 2005-12-08 Bisson William M Portable ventilator for work station

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550560A (en) * 1983-03-30 1985-11-05 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Method for piecing fasciated yarn
DE3317361C2 (de) * 1983-05-13 1994-03-17 Schlafhorst & Co W Verfahren und Vorrichtung zur Inbetriebnahme eines Friktionsspinnaggregates

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1137609A (fr) * 1954-10-12 1957-05-31 Perfectionnements apportés aux dispositifs pour réaliser un étirage poussé de mèches à filer composées de fibres textiles cardées ou peignées, par l'application d'une fausse torsion
FR1199543A (fr) * 1957-03-05 1959-12-15 Perfectionnements apportés aux dispositifs rotatifs et profilés pour obtenir une fausse torsion produisant l'étirage des mèches au cours de la formation des filés textiles
US3540201A (en) * 1966-11-04 1970-11-17 Toray Industries Method and apparatus for manufacturing yarn from textile fibers

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3875735A (en) * 1972-01-21 1975-04-08 Platt International Ltd Threading bushes
US3822539A (en) * 1972-10-24 1974-07-09 Ici Ltd Threadable yarn treatment tube
US3939639A (en) * 1973-06-05 1976-02-24 Bayer Aktiengesellschaft Spin stretching and spin stretch texturing of multifilament yarns
US3991545A (en) * 1975-01-17 1976-11-16 Heberlein Maschinenfabrik Pneumatic auxiliary device
US4059948A (en) * 1975-05-23 1977-11-29 Asa S.A. Automatic threading false-twist spindle
US4047372A (en) * 1975-09-18 1977-09-13 Hamel Gmbh Zwirnmaschinen Pneumatic threader for twisting apparatus
US4127983A (en) * 1976-10-27 1978-12-05 Palitex Project Company Gmbh Yarn guiding and threading mechanisms for use with textile yarn processing machines
US4598539A (en) * 1983-10-26 1986-07-08 Hans Stahlecker Yarn piecing arrangement for an open-end friction spinning machine
US4631912A (en) * 1985-05-09 1986-12-30 Burlington Industries, Inc. Initial threading for vacuum spinning
US4856691A (en) * 1987-03-16 1989-08-15 Tsudakoma Corp. Yarn guide device
US4885906A (en) * 1987-09-23 1989-12-12 Vyzkumny Ustav Bavlnarsky Device for automatically spinning-in yarn
US20050272363A1 (en) * 2004-05-17 2005-12-08 Bisson William M Portable ventilator for work station
US7083513B2 (en) * 2004-05-17 2006-08-01 Bisson William M Portable ventilator for work station

Also Published As

Publication number Publication date
DE1965796A1 (de) 1970-09-03
FR2027066B1 (cs) 1974-03-15
CH512599A (fr) 1971-09-15
GB1263330A (en) 1972-02-09
FR2027066A1 (cs) 1970-09-25

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