US3901283A - Warp draw-off apparatus - Google Patents

Warp draw-off apparatus Download PDF

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Publication number
US3901283A
US3901283A US469384A US46938474A US3901283A US 3901283 A US3901283 A US 3901283A US 469384 A US469384 A US 469384A US 46938474 A US46938474 A US 46938474A US 3901283 A US3901283 A US 3901283A
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US
United States
Prior art keywords
worm
warp
drive shaft
friction
area
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
US469384A
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English (en)
Inventor
Walther Filter
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.)
Voestalpine AG
Original Assignee
Voestalpine AG
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 Voestalpine AG filed Critical Voestalpine AG
Application granted granted Critical
Publication of US3901283A publication Critical patent/US3901283A/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/04—Control of the tension in warp or cloth
    • D03D49/20—Take-up motions; Cloth beams

Definitions

  • This invention relates to a warp draw-ofi apparatus for use in a loom having two beams, which respectively precede and succeed the shed area in the direction of warp movement.
  • the warp is tensioned between the driven warp beam and the driven cloth beam so that the entire driving force need not be applied by means of the cloth beam.
  • the warp tension depends on the diameter of the material wound on each beam, unless additional tensioning means are provided.
  • the warp tension cannot be adjusted while the machine is being set up because the warp is not tensioned unless the machine is in operation so that variations in warp tension are unavoidable at least at the beginning of the weaving operation.
  • draw-off rolls are (friction rolls) associated with the warp beam and the cloth beam, respectively, and that the worm of one of two worm gearings connecting the draw-off rolls to a common drive shaft may be coupled to the shaft in different relative angular positions, while the draw-off apparatus is at a standstill.
  • This arrangement has the advantage that the warp tension is independent of the diameter of the material on the warp beam and cloth beam because the warp is drawn off by separate rolls.
  • a desired initial tension of the warp threads may be established by turning the worm of one of the two worm gearings relative to the drive shaft.
  • the warp tension may also be adjusted at a slipping friction clutch between one of the draw-off rolls and the associated worm wheel by setting the maximum torque which can be transmitted; by the friction clutch.
  • FIG. 1 is a side elevation of warp draw-off apparatus according to the invention and FIG. 2 shows clutch discs in the apparatus of FIG. 1 in front elevation.
  • a cloth draw-off roll 1 which precedes a cloth beam 13 in the direction of warp movement and awarp drawoff roll 2 which succeeds a warp beam 14 and is referred to hereinafter as a back rest, are connected to a hollow shaft and a drive shaft 6, respectively, by a worm 3 and a worm wheel 4.
  • the drive shaft 6 is associated with the back rest 2 and passes coaxially through the hollow shaft 5. Adjacent axial ens of the hollow shaft 5 and the drive shaft 6 carry respective coupling discs 7 and 8.
  • a slipping friction clutch 9 is provided between the back rest 2 and the worm wheel 4 and limits tension in the warp 16. The friction clutch 9 permits adjustment of the maximum transmitted torque.
  • An intermittent drive actuates the shafts 5, 6 by means of a disc 10 secured against rotation on the shaft
  • the discs 7, 8 coupling the two shafts 5, 6 to each other are disengaged, and one of the two shafts is rotated relative to the other.
  • the cloth draw-off roll and the back rest 2 are provided with friction coverings which prevent a slipping of the warp threads, the latter may be tensioned by turning the cloth draw-off roll 1 and the back rest 2 relative to one another.
  • the frictions rolls 1, 2 do not require locking devices.
  • each disc is formed with a different number of bores 11, uniformly spaced on respective circles of equal diameter for receiving a coupling pin 12.
  • it is sufficient to select a bore which is aligned as exactly as possible with a bore in the other disc and insert the coupling pin through the aligned bores.
  • a loom having a shed area and comprising a warp beam spaced from one end of said area, a cloth beam spaced from the other end of said area, and warp draw-off apparatus; the improvement in the warp drawoff apparatus comprising a. a first friction roll disposed between said warp beam and said area,
  • two worm gearings respectively associated with said friction rolls and each including a worm wheel operatively connected to the associated friction roll and a worm nonrotatably connected to said drive shaft and meshing with said worm wheel,
  • coupling means for coupling the worm of one of said worm gearings to said drive shaft in each of a plurality of relative angular positions while said apparatus is at a standstill.
  • said coupling means including a hollow shaft coaxially surrounding said drive shaft and having an end axially adjacent to an end of said drive shaft, and two coupling discs respectively carried by said adjacent ends, said worm of said one worm gearing being mounted on said hollow shaft.
  • each of said coupling discs being formed with a plurality of axial bores uniformly spaced along a circle, and the number of bores in one of said discs differing from the number of bores in the other disc, said coupling means further including a coupling pin detachably extending through respective, axially aligned bores in said two discs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Warping, Beaming, Or Leasing (AREA)
US469384A 1973-05-16 1974-05-13 Warp draw-off apparatus Expired - Lifetime US3901283A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AT426473A AT322466B (de) 1973-05-16 1973-05-16 Kettfadenabzugsvorrichtung für flachwebmaschinen

Publications (1)

Publication Number Publication Date
US3901283A true US3901283A (en) 1975-08-26

Family

ID=3561752

Family Applications (1)

Application Number Title Priority Date Filing Date
US469384A Expired - Lifetime US3901283A (en) 1973-05-16 1974-05-13 Warp draw-off apparatus

Country Status (11)

Country Link
US (1) US3901283A (it)
JP (1) JPS5018761A (it)
AT (1) AT322466B (it)
BE (1) BE815115A (it)
CH (1) CH567125A5 (it)
CS (1) CS164207B2 (it)
DE (1) DE2420713A1 (it)
ES (1) ES426312A1 (it)
FR (1) FR2229792B3 (it)
GB (1) GB1427652A (it)
IT (1) IT1013792B (it)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2364990A1 (fr) * 1976-09-21 1978-04-14 Saurer Ag Adolph Metier a tisser
CN116123262A (zh) * 2023-01-10 2023-05-16 浙江泰坦股份有限公司 一种织机传动装置

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4914104B2 (ja) * 2006-04-19 2012-04-11 東洋機械金属株式会社 射出成形機
JP2008105301A (ja) * 2006-10-26 2008-05-08 Toyo Mach & Metal Co Ltd 射出成形機

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US676376A (en) * 1900-11-09 1901-06-11 Walter I Whitehurst Wire-weaving loom.
US1062455A (en) * 1910-01-11 1913-05-20 John H Greenhalgh Let-off mechanism for looms.
US2820485A (en) * 1952-10-22 1958-01-21 Selles Pedro Cerdans Let-off and take-up for looms
US3308854A (en) * 1963-01-22 1967-03-14 Sulzer Ag Loom for weaving

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US676376A (en) * 1900-11-09 1901-06-11 Walter I Whitehurst Wire-weaving loom.
US1062455A (en) * 1910-01-11 1913-05-20 John H Greenhalgh Let-off mechanism for looms.
US2820485A (en) * 1952-10-22 1958-01-21 Selles Pedro Cerdans Let-off and take-up for looms
US3308854A (en) * 1963-01-22 1967-03-14 Sulzer Ag Loom for weaving

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2364990A1 (fr) * 1976-09-21 1978-04-14 Saurer Ag Adolph Metier a tisser
US4125131A (en) * 1976-09-21 1978-11-14 Adolph Saurer Fixed driving connection between a guide roller and delivery roller of a loom
CN116123262A (zh) * 2023-01-10 2023-05-16 浙江泰坦股份有限公司 一种织机传动装置
CN116123262B (zh) * 2023-01-10 2023-08-08 浙江泰坦股份有限公司 一种织机传动装置

Also Published As

Publication number Publication date
AT322466B (de) 1975-05-26
IT1013792B (it) 1977-03-30
DE2420713A1 (de) 1974-12-05
GB1427652A (en) 1976-03-10
JPS5018761A (it) 1975-02-27
ES426312A1 (es) 1976-07-01
FR2229792B3 (it) 1977-03-11
CS164207B2 (it) 1975-11-07
CH567125A5 (it) 1975-09-30
FR2229792A1 (it) 1974-12-13
BE815115A (fr) 1974-11-18

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