US3194278A - Yarn guide means for bobbin change mechanisms - Google Patents

Yarn guide means for bobbin change mechanisms Download PDF

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Publication number
US3194278A
US3194278A US259047A US25904763A US3194278A US 3194278 A US3194278 A US 3194278A US 259047 A US259047 A US 259047A US 25904763 A US25904763 A US 25904763A US 3194278 A US3194278 A US 3194278A
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United States
Prior art keywords
shuttle
yarn
pirn
sley
tail
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Expired - Lifetime
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US259047A
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English (en)
Inventor
Grob Willy
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Individual
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Individual
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D45/00—Looms with automatic weft replenishment
    • D03D45/50—Cutting, holding, manipulating, or disposing of, weft ends

Definitions

  • the invention relates to an automatic loom and more particularly to a mechanism for such looms with a pivoted sley and a plurality of pirns adapted to be inserted selectively into a shuttle.
  • a further obejct of the invention is the provision of means so that the weft yarns come undoubtedly into a position beneath the tongue of the shuttle after pirn change.
  • FIG. 1 shows a side view of the device with several pirns
  • FIG. 2 is a plan view of the device shown in FIG. 1,
  • FIG. 3 is a diagrammatic view of the device during the pirn change
  • FIG. 4 shows diagrammatically a further view of the device in another position of the sley
  • FIG. 5 is a view of the various positions of the crank shaft for driving the sley
  • FIG. 6 is a front view of a part of a shuttle with an inserted pirn
  • FIG. 7 is a cross-section through the shuttle on the line VlI--Vil of FIG. 6.
  • the device is intended for a loom with automatic pirn or bobbin change in which the wound pirns 2 are supplied one over the other in a shuttle box 1.
  • the empty pirns are wound with yarn on the machine itself.
  • This winding mechanism is no part of the invention and therefore it is not in further details explained.
  • the lowermost pirn i 2 in this mechanism which is not inside of a shuttle is determined by shuttle box 1 and other mechanisms and cannot be varied to a substantial extent.
  • the lowermost pirn 3 of the full wound pirns 2 stored in the shuttle box 1 lies directly over the shuttle 4 when the sley 243 of the loom lies in its foremost position shown in FIG. 3.
  • the foremost position of the sley corresponds to the position I of the crank (see FIG. 5).
  • a striker 6 acts directly over the lowermost pirn 3 disposed above the shuttle and forces it into the inside of the shuttle 4 (FIG. 3) whereby simultaneously the empty pirn '7 falls downwardly.
  • the yarn ends or yarn tails 9 projecting from the pirns Z are held constantly taut but not pulled out by the rotating felt drum 8.
  • an adjusting yarn guide member 14 is provided which ensures that the yarn end 9 is at least approximately coincident with the axis of the pirn 3 also in the position II of the crank arm 35 or Ii of the shuttle 4, that is to say it runs in line with the longitudinal axis of the shuttle.
  • the yarns can now pass in their normal position into the yarn receiving means of the shuttle, under the tongue 25 and between the brake jaws 36 (see FIG. 7) as a result of the increased pull on the yarn 9 by the striking movement of the shuttle.
  • the increased pull on the yarn 9 has the effect that the yarn slips over the upper inclined part of the tongue 35 and is pushed under this tongue.
  • the brake jaws 36 disposed between the tongue 25 and the pirn are movable and bear yieldingly against the yarns 9c.
  • the adjusting yarn guide member 14 consisting preferably of bent strip material is provided with a shoulder 37 against which the lowermost yarn 9 of the pile of pirns bears.
  • a rod 15 connected with an angle member 39 to the adjusting member 14 is supported in an axially displaceaole manner in two bearings 16 for clamping the yarn in the moment of the striking movement of the shuttle between clamping heads 15a, 15b.
  • a blocking pin 19 engaging behind a projection 20 or nose of the lever 17 prevents this lever initially from moving to the position shown in chain lines in FIG. 4.
  • a return lever 21 is pivotally fastened to the rod 15 is pushed into the path of an angular stop 22, rigidly fastened to the sley 23.
  • the return lever 21, the rod 15 and the adjusting member 14 are pressed back to the original position shown in full lines in FIG. 4 whereupon the pin 19 again drops behind the projection 29 in order to retain the lever 17 until the next pirn change is required.
  • a yarn guiding device for a loom comprising, in combination, a reciprocable sley; a shuttle movable with said sley between a first position for receiving a pirn and a second position disposed to be picked, said shuttle having yarn receiving means located in a longitudinal axis thereof; meansfor inserting a pirnhavin'g a yarn tail into saidshuttle in said first position; retaining means for.
  • said clampin-gmeans clarriping the yarn tail in a positionalignediwith ithe longitudinal-axis of said shuttle, andsaid yarn guidei means moy ing a portionpf the yarn tail between said clamping ;mjeanst andisaid shuttle Y to' a .p o'sition aligned with said longitudinalxaxis of said I shuttlein said second position wherebythe yarn tail is placed in a position to be inserted intosaid yarn receiving means of said shuttleyandi operating means connected to said yarn fguide-meansyand including a spring-.;connected, V to said yarn guide means for moving'the sametoengage i and move' the yarn tail 'tosaid ;a ligne dnposition,' and 1a blocking means for holding said yarn ,.guidefmeans and adapted to release said yarniguideimeans ih synchronism:
  • a device including clamping means and a yarn guide means located intermediate said shuttle" and? I said' holding means and beingmoveable in the direction of the movement of said sleyt for engaging the yarntail, said clamping means clamping the yarn tail in a position aligned with the lo'ngitudinalaxis of said shuttleyand said yarn guide means moving a portion of the yarn tail between said clamping means and said shuttle to a posi-' tion aligned with said longitudinal axis. of said shuttle in said second position whereby the yarn tail is placed in a position to be inserted into'said yarn receiving means A of said shutle.
  • a reciprocable sley ashuttle movable'with said sleybetween a first position for receiving a pirn and i -asecond position disposed to he picked, said shuttle hav- 0 ing yarn receiving means located in a longitudinal axis thereof; means for inserting a pirn having a yarn-tail into a said shuttle in said firstposition; holding means for holding the 'ya rnv'tail of the inserted pirn' spaced from said" shuttle and being disposed in relationto saidi first position of said shuttle so that the yarn tail extends in the, direction of'said longitudinal axis in said first positionof said shuttle, and at an angle to said axis in said second 7 position of said shuttle; and a device including clamping means'and yarn-guide means located intermediate said sh Httle and said holding means and being movablein the 2,766,779,.
  • said shuttle'yand being disposediinirelation to saidtfirst' posi tion of, said shuttle so 'thatg the;yarndailrextendsin the 1 direction of r saida longitudinal c axis in said i first position I of' said shuttleg and ,at' an angle ito :saidaxis iinisaid sec-. 'i ondposition of said shuttle; and a deviceiincluding clamp-.
  • operating means including "a. lever iconnected to said yarn guidefmeans: and to said clamping meansQa spring"eonnectedtosaid lever for moving 'saidyarn "guide meansfto' engage's'ai'di yarn-tailjso-that the same, is moved to said" aligned position, and for operating saidclamping mean'stto; clamp” the yarn tail, and blocking meansifor blocking movement of 'said lever under thetaction of saidspring; andlefi iptedto -v releasewsaid lever in synchronisrn- With itheimovement of said 'sleyg.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US259047A 1962-02-19 1963-02-18 Yarn guide means for bobbin change mechanisms Expired - Lifetime US3194278A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH198362A CH390829A (de) 1962-02-19 1962-02-19 Einrichtung für den automatischen Spulenwechsel an Webstühlen

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US3194278A true US3194278A (en) 1965-07-13

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Application Number Title Priority Date Filing Date
US259047A Expired - Lifetime US3194278A (en) 1962-02-19 1963-02-18 Yarn guide means for bobbin change mechanisms

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US (1) US3194278A (de)
CH (1) CH390829A (de)
GB (1) GB1025062A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411550A (en) * 1966-11-02 1968-11-19 Johnny W. Jenkins Jr. Transfer-tail-clamping apparatus
US3788362A (en) * 1972-12-21 1974-01-29 Blakely Ind Automatic loom filling winder
US20150031907A1 (en) * 2012-02-29 2015-01-29 Mitsubishi Rayon Co., Ltd. Method for producing acrylonitrile

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1161566A (en) * 1912-06-07 1915-11-23 John Whittaker Weft-replenishing mechanism for looms for weaving.
US2766779A (en) * 1953-05-04 1956-10-16 Universal Winding Co Replenishing means for looms

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1161566A (en) * 1912-06-07 1915-11-23 John Whittaker Weft-replenishing mechanism for looms for weaving.
US2766779A (en) * 1953-05-04 1956-10-16 Universal Winding Co Replenishing means for looms

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3411550A (en) * 1966-11-02 1968-11-19 Johnny W. Jenkins Jr. Transfer-tail-clamping apparatus
US3788362A (en) * 1972-12-21 1974-01-29 Blakely Ind Automatic loom filling winder
US20150031907A1 (en) * 2012-02-29 2015-01-29 Mitsubishi Rayon Co., Ltd. Method for producing acrylonitrile
US9328063B2 (en) * 2012-02-29 2016-05-03 Mitsubishi Rayon Co., Ltd. Method for producing acrylonitrile

Also Published As

Publication number Publication date
CH390829A (de) 1965-04-15
GB1025062A (en) 1966-04-06

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