US3923262A - Yarn pulling device - Google Patents

Yarn pulling device Download PDF

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Publication number
US3923262A
US3923262A US426441A US42644173A US3923262A US 3923262 A US3923262 A US 3923262A US 426441 A US426441 A US 426441A US 42644173 A US42644173 A US 42644173A US 3923262 A US3923262 A US 3923262A
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US
United States
Prior art keywords
roller
yarn
wrapping
wrapping roller
axis
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
US426441A
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English (en)
Inventor
Gerardus Hendrikus Kaalverink
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.)
Rueti Te Strake BV
Original Assignee
Rueti Te Strake BV
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 Rueti Te Strake BV filed Critical Rueti Te Strake BV
Application granted granted Critical
Publication of US3923262A publication Critical patent/US3923262A/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
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Definitions

  • the invention relates to a yarn pulling device comprising two cooperating rollers, one of which is adapted to receive the yarn from a yarn supply and the other serving as the drive roller, means being provided to control the yarn pulling speed.
  • the rollers In a known yarn pulling device the rollers. positioned with their axes parallel to each other, have conical shells.
  • the yarn extends substantially in the shape of a S around both rollers and through the slot or nip between the conical shell surfaces thereof.
  • the rollers are generally driven at a constant speed so that the yarn pulling speed is determined by the position of the yarn in the nip between the rollers.
  • a guiding means For controlling that position and thereby the yarn pulling speed a guiding means has been provided, by means of which the yarn may be shifted parallel to'the axial direction of both rollers in the nip between said rollers.
  • the friction surface between the yarn and the drive disc is relatively small, whereby slipping of the yarn relative to the rollers may easily occur. This possibility of slipping could be eliminated by increasing the force by which the yarn is clamped between both rollers, but this would increase the chances of damaging the yarn.
  • the invention provides a yarn pulling device in which the above mentioned disadvantages are removed while preserving a controllable pulling speed.
  • the yarn pulling device is characterized in that the one roller is in the form of a cylindrical wrapping roller, which engages a drive roller according to an adjustable diameter with a peripheral edge portion.
  • auxiliary roller provided with circumferential grooves, which roller guides the yarn arriving from the yarn supply towards the cylindrical wrapping roller in the form of the desired number of windings.
  • the control of the yarn pulling speed may be carried out in a simple manner by adjusting the wrapping roller along the operative surface of the drive disc and thereby bringing its driven peripheral edge portion into engagement with said drive disc at a larger or smaller diameter.
  • the axes of the wrapping roller and the drive roller are parallel, while the drive roller has a conical circumferential surface and the wrapping roller is mounted with its peripheral edge portion adjustable along said conical circumferential surface.
  • the axis of the wrapping roller is at an angle with the axis of the drive roller, the wrapping roller being mounted with its driven peripheral edge portion radially adjustable along a head surface of the drive roller.
  • FIG. 1 is an axial section through the yarn pulling device according to the invention, according to the line II in FIG. 2;
  • FIG. 2 is an end viewofthe yarn pulling device according to FIG.?l; and I FIG. 3 is a fragmentary section showing a modification of the device in FIG. 1.
  • a drive roller 1 which is e.g. adapted to pull the weft yarn-to be used in a weaving machine from the supply cop, comprises a drive roller 1 having a conical circumferential surface, which roller is driven by a shaft 2.
  • the support housing 7 is pivotally mounted by means of two laterally projecting ears 8 and a'shaft 9 to a stationary bracket 10, e.g. being part of the frame of a weaving machine.
  • the peripheral edge portion of the wrapping roller, which is in engagement with the drive roller 1, is formed by a friction ring 3a.
  • Said ring e.g. in the form of an O-ring, is sunk into a circumferential groove in the shell surface of the wrapping roller 3 and projects slightly radially thereof. With such a ring a slip free engagement may be obtained, with a small frictional contact surface, also when the pulling speed changes, therefore with accelerations and decelerations respectively, between the wrapping roller 3 having small mass and the drive roller.
  • An adjustable knob 11 is rotatably and non-slidably journalled in the support housing 7, namely in the end thereof which is remote from the wrapping roller 3.
  • Said adjusting knob is provided with an inwardly extending screw threaded spindle 12, which is screwed into a correspondingly threaded hole 13 in the shaft 6 of the wrapping roller 3.
  • the shaft 6 is prevented from rotation in the housing 7 by a key 14 extending through the wall of the support housing 7 into a keyway 14a in the shaft 6.
  • the shaft 6 and thereby the wrapping roller 3 is shifted axially.
  • the contact point between the wrapping roller 3 and the drive roller 1 is axially shifted along the conical circumferential surface of the drive roller, whereby the wrapping roller 3 engages the drive roller 1 at a larger or smaller diameter so that the speed of the wrapping roller 3 is correspondingly increased or decreased.
  • a radially extending arm 18 is secured to the shaft 6 and supports at its free end a guide roller 19 provided with circumferential grooves, e.g. made of porcelain.
  • This guide roller receives the yarn 21 arriving from the yarn supply 20 (see FIG. 2) and guides it in a number of windings towards the wrapping roller 3. It will be clear that the guide roller 19 and the wrapping roller 3 are jointly shifted in an axial direction when the adjusting knob 11 is rotated, so that the position of the yarn windings is not changed when the wrapping roller 3 is adjusted.
  • friction ring 3a could also engage the end surface of a drive disc la (FIG. 3) positioned with its axis at an angle relative to that of the wrapping roller 3, instead of engaging the conical circumferential surface of the drive roller 1.
  • a yarn pulling device comprising a cylindrical wrapping roller which is adapted to receive the yarn from a yarn supply and which has a rim by which the roller can be frictionally driven,
  • a driving disc rotatable about a fixed axis and having a surface which is symmetrical about said axis, said surface being non-parallel to said axis and frictionally engaging said rim in all of the adjusted positions of said roller, whereby adjustment of the contact of said rim along said surface changes the speed at which said roller is driven by the disc.
  • a device characterized in that said surface is conical and the axes of the wrapping roller and of the driving disc are parallel.
  • a device characterized in that the axis of the wrapping roller is at an angle with that of the driving disc.
  • a device characterized in that said rim of the wrapping roller is formed by a friction ring provided in a groove in the shell surface of that roller.
  • a device characterized in that a guide roller having circumferential grooves and the wrapping roller are both rotatably supported on said mounting, and means for adjusting said mounting along the axis of said wrapping roller.
  • a device characterized in that said mounting means includes a shaft rotatably supporting said wrapping roller, said shaft being longitudinally adjustably mounted in a housing, means for supporting said housing for movement toward and away from the driving disc, spring means for urging said housing with said wrapping roller against the driving disc, and a projecting arm on said shaft for supporting
US426441A 1972-12-22 1973-12-20 Yarn pulling device Expired - Lifetime US3923262A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7217616A NL7217616A (fr) 1972-12-22 1972-12-22

Publications (1)

Publication Number Publication Date
US3923262A true US3923262A (en) 1975-12-02

Family

ID=19817620

Family Applications (1)

Application Number Title Priority Date Filing Date
US426441A Expired - Lifetime US3923262A (en) 1972-12-22 1973-12-20 Yarn pulling device

Country Status (5)

Country Link
US (1) US3923262A (fr)
JP (1) JPS5710019B2 (fr)
CH (1) CH578991A5 (fr)
GB (1) GB1457266A (fr)
NL (1) NL7217616A (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS536249U (fr) * 1976-07-02 1978-01-20
DE3305376C2 (de) * 1983-02-17 1985-01-03 Kurt Wolf & Co Kg, 7547 Wildbad Schaltungsanordnung zur Regelung der Heizleistung eines Heizelementes einer Kochplatte

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962029A (en) * 1932-06-21 1934-06-05 Dunlop Rubber Co Supplying thread under extension, for example in covering machines
US2667052A (en) * 1949-06-02 1954-01-26 Sarl So Called Lebocey Machine Thread feeder for knitting and hosiery machines
US2985393A (en) * 1956-03-12 1961-05-23 Glanzstoff Ag Winding machine for the production of bobbins with predetermined thread tension overthe bobbin run
US3202371A (en) * 1961-05-01 1965-08-24 Bured Inc Feeding mechanism for lace packaging machine
US3552622A (en) * 1968-09-24 1971-01-05 Strake Maschf Nv Device for drawing a thread for a thread package

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1962029A (en) * 1932-06-21 1934-06-05 Dunlop Rubber Co Supplying thread under extension, for example in covering machines
US2667052A (en) * 1949-06-02 1954-01-26 Sarl So Called Lebocey Machine Thread feeder for knitting and hosiery machines
US2985393A (en) * 1956-03-12 1961-05-23 Glanzstoff Ag Winding machine for the production of bobbins with predetermined thread tension overthe bobbin run
US3202371A (en) * 1961-05-01 1965-08-24 Bured Inc Feeding mechanism for lace packaging machine
US3552622A (en) * 1968-09-24 1971-01-05 Strake Maschf Nv Device for drawing a thread for a thread package

Also Published As

Publication number Publication date
GB1457266A (en) 1976-12-01
NL7217616A (fr) 1974-06-25
CH578991A5 (fr) 1976-08-31
JPS4987857A (fr) 1974-08-22
JPS5710019B2 (fr) 1982-02-24

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