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US3156964A - Weft correcting apparatus - Google Patents

Weft correcting apparatus Download PDF

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Publication number
US3156964A
US3156964A US174499A US17449962A US3156964A US 3156964 A US3156964 A US 3156964A US 174499 A US174499 A US 174499A US 17449962 A US17449962 A US 17449962A US 3156964 A US3156964 A US 3156964A
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US
United States
Prior art keywords
band
cloth
weft
bands
rubber
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
US174499A
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English (en)
Inventor
Leimer Albert
Brunner Siegfried
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LEIMER
Original Assignee
LEIMER
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Filing date
Publication date
Application filed by LEIMER filed Critical LEIMER
Application granted granted Critical
Publication of US3156964A publication Critical patent/US3156964A/en
Anticipated expiration legal-status Critical
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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06H—MARKING, INSPECTING, SEAMING OR SEVERING TEXTILE MATERIALS
    • D06H3/00—Inspecting textile materials
    • D06H3/12—Detecting or automatically correcting errors in the position of weft threads in woven fabrics

Definitions

  • Such extensive treatment of the fabric may have an adverse effect upon parts of the fabric which are about to enter, or which may have already left, the weft straightening apparatus; and the type of correction effected can thus adversely influence other portions of the fabric outside the weft correcting apparatus, and may in fact lead to the formation of new and undesired weft displacements in portions of the fabric spaced from the correcting appliance.
  • an improved apparatus for straightening weft threads in a run or web of woven cloth said apparatus being characterized by a cloth treatment zone formed between two endless stretchable (e.g., rubber) bands, or between such a band and a backing plate, in conjunction with means operative, in the treatment zone, through which the cloth web passes, to effect a localized and adjustable compression of the rubber band or bands in such manner that various adjacent areas in the width of the bands are independently and differently compressed.
  • Such variations in band compression cause the said bands to be variably stretched, as will be described, and this in turn causes corresponding portions of the cloth run being treated to be variably accelerated in the treatment zone, thereby to effect any desired correction.
  • the aforementioned stretching efiect of the rubber band or hands is independent of the speed of the cloth and remains in existence until the pressure applied to the band or bands is relieved and the rubber returns to its original thickness.
  • FIG. 1 is a diagrammatic perspective view of the invention
  • FIG. 2 is an elevation of part of the arrangement of FIG. 1 to a larger scale
  • FIG. 3 is a plan view
  • FIG. 4 is a diagrammatic View of part of a piece of cloth showing the manner in which the invention operates.
  • a weft correcting apparatus constructed in accordance with the present invention may comprise an endless rubber band 1 supported on a pair of rollers 3 and 4, and cooperating with a further endless rubber band 2 supported on further rollers 6, 5 and 7.
  • the rollers 4 and 5 are at the exit side of the apparatus and are driven at the same speed but in opposite directions, e.g., by a motor as illustrated in FIGURE 1.
  • a roller 9 is provided between rollers 3 and 4. This roller 9 can also be driven if desired, and can moreover be adjustable toward and away from a roller 10 (to be described) in a manner, and by means of a structure, similar to that to be described hereinafter in reference to said roller 1t).
  • the speed of the drive is such that the circumferential speed or surface speed of the rubber bands 1 and 2 corresponds to or is equal to the speed of travel of cloth run 8 in the direction of the arrow.
  • the roller 9 functions as a contra-pressure roller.
  • a composite roller comprising parts or rolls 1%, 1t), it) etc., is mounted between rollers 5 and 6 at a position opposite roller 9.
  • Each individual roll, 1t 10', 10" etc. can, as best illustrated in FIGURES 1 and 2, be moved toward or away from roller 9 by a lever 11 mounted on a pivot 13.
  • the contra-pressure roller 9 is illustrated in plan in FIG. 3, as are also the rubber bands 1 and 2, and the opposing rolls 19, 10, 10" etc.
  • Each lever 11, upon which a roll 10, 10, 16", etc. is rotatably mounted, is adapted to rotate about the pivot 13 (FIG. 2) and is integral with or connected to a further lever 12. Accordingly, as can be seen from FIG.
  • the amount of acceleration effected in any particular portion of cloth web 8 is dependent upon the amount of rubber displacement in the directions A. and B, in the sections of bands 1 and 2 adjacent said particular web portion.
  • the stretch in the bands, and the resultant acceleration in the cloth portion being treated is dependent upon the amount of constriction of bands 1 and 2 and may accordingly be varied by varying the magnitude of the force exerted in the direction of arrow 14. As this force is increased, the distance between rollers 9 and 1G is reduced; and this in turn operates to increase the speed of the incremental portions of bands 1 and 2 between rollers 9 and 10, thereby in turn accelerating the warp of web 8 passing this particular spot.
  • FIG. 4 shows, by way of example, a cloth run with weft threads having a straight line slant, the amount of which can be ascertained by the use of a weft thread distortion indicating appliance.
  • the forces depicted by the arrows X X are, in such a case, graduated linearly in accordance with the assumed linear distortion or slant of the weft thread.
  • the arrow X illustrates the maximum by a magnitude indicated at a+b 3 force applied in this assumed case, and X is intended to illustrate the application of zero force.
  • the basic concept of the present invention can also be practiced by utilizing a contra-pressure roller 9 which, rather than being continuous, takes the form of a plurality of individual cylinders or rolls 9, 9', 9", etc. (see FIGURE 1) corresponding to the rolls 10, 10, 10", etc., already described.
  • the single force in the direction of arrow 14 can be replaced by a pair of forces applied symmetrically to and between any individual pair of opposed rolls.
  • the individual rolls employed, such as 10, 10, 10", etc. to be somewhat barrel shaped in form to effect a smoother gradation of forces applied to adjacent portions of the rubber bands 1-2.
  • Such a barrel shape for the individual rolls is depicted in FIGURE 3.
  • weft correcting apparatus and techniques of the present invention have no effect on the tension of the portions of the cloth web either in front of or behind the weft correcting device.
  • Weft correction occurs within and is confined to the treatment zone between bands 1 and 2, and the desired weft correction can take place even if the cloth run arrives at and leaves the device at extremely low tension.
  • Apparatus for treating Woven cloth to straighten weft threads thereof including a first endless rubber band, support means for said band, means for applying a localised varying pressure to said band to cause variable stretching of a localized portion thereof, cloth support means including a second endless rubber band having a portion'extending closely adjacent to said localized portion of said first band, and means for feeding a woven cloth between said adjacent portions of the first and second rubber bands.
  • said means for applying said localised varying pressure to said band includes means operative to apply varying pressures to said band along a line extending transverse to the feed direction of said cloth, said varying pressures varying in accordance with the amount of weft thread distortion in said woven cloth.
  • said means band, support means for said band, means for applying a localised adjustable pressure to said band to cause stretching and relaxing of a localized portion thereof said pressure applying means comprising a pressure roller consisting of a plurality of axially aligned rolls, means for adjusting the pressure applied by each roll, cloth support means in the form of a second endless rubber band, means for supporting a portion of said second endless rubber band in opposed relation to the localized portion of said first endless band which is subjected to said localised adjustable pressure, and means for feeding a length of woven cloth between said opposed portions of said first and second bands.
  • said support means for said first and said second endless rubber bands comprise guide rollers, said pressure roller being disposed between a pair of said guide rollers for said first endless band, and means'for driving guide rollers of said first and second endless rubber bands.
  • Weft straightening apparatus for woven cloth comprising an endless band of stretchable material, means supporting said band for continuous closed loop movement along a preselected path, pressure means defining an elongated cloth treatment zone adjacent which an elongated portion of said band is continuously positioned during its said closed loop movement, means for applying different pressures to different localized parts of said elongated portion of said band to effect varying amounts of localized stretching at different positions in said elongated portion of said band thereby to variably accelerate corresponding portions of cloth in said treatment zone, and means for feeding a length of cloth through said elongated treatment zone in intimate contact with said varyingly stretched parts of said elongated band portion, said pressure applying means comprising means operative to effect a pressure gradient along said parts of said band in a direction extending transverse to the direction of said cloth feed.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
US174499A 1961-02-25 1962-02-20 Weft correcting apparatus Expired - Lifetime US3156964A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEE20658A DE1180342B (de) 1961-02-25 1961-02-25 Vorrichtung zum Geraderichten der Schussfaeden von Gewebebahnen

Publications (1)

Publication Number Publication Date
US3156964A true US3156964A (en) 1964-11-17

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US174499A Expired - Lifetime US3156964A (en) 1961-02-25 1962-02-20 Weft correcting apparatus

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US (1) US3156964A (de)
DE (1) DE1180342B (de)
GB (1) GB955363A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247566A (en) * 1963-11-06 1966-04-26 Burklund Lab Inc Weft straightener
US3296676A (en) * 1964-06-03 1967-01-10 Dan C Page Jr Weft straightening apparatus and method

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3339249A (en) * 1964-08-25 1967-09-05 John D Riordan Fabric compactor
GB1069620A (en) * 1964-09-17 1967-05-24 Schmidt Adolf Process for the stretching or contracting of a material web
US3939537A (en) * 1973-10-24 1976-02-24 Morrison Machine Co. Apparatus for longitudinally compressing textile material
US5035030A (en) * 1990-04-05 1991-07-30 Riccardo Pellari Apparatus for controlling and straightening weft and/or warp fabric patterns
DE102006003384A1 (de) * 2006-01-24 2007-07-26 Brückner Trockentechnik GmbH & Co. KG Vorrichtung zum Richten textiler Materialbahnen
CN113174738A (zh) * 2021-05-28 2021-07-27 常州宏大智能装备产业发展研究院有限公司 织物纹理及花形矫正方法及整纬机

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US886024A (en) * 1907-10-31 1908-04-28 Charles Wiebke Ribbozine-machine.
US1107771A (en) * 1914-04-29 1914-08-18 Eugene Louis Ezbelent Plaiting-machine for producing textile fabrics resembling velvet.
US1272924A (en) * 1918-01-04 1918-07-16 Bauer & Black Weft-straightening apparatus.
US1690334A (en) * 1927-04-19 1928-11-06 Durrant George Apparatus for straightening weft in fabrics
US2825117A (en) * 1952-06-20 1958-03-04 Bradford Dyers Ass Ltd Method and apparatus for treating sheet material
US2972795A (en) * 1957-08-13 1961-02-28 Crompton & Knowles Corp Process for treating textile materials
US3007223A (en) * 1958-05-29 1961-11-07 L & L Mfg Inc Process and apparatus for controlling shrinkage in and otherwise improving the characteristics of tubular fabrics

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1861422A (en) * 1930-04-18 1932-05-31 Sanford L Cluett Art of shrinking fabrics
DE718624C (de) * 1938-05-07 1942-03-17 C G Haubold Ag Vorrichtung zum Krumpfen von Gewebebahnen in ihrer Laengsrichtung
DE959821C (de) * 1953-12-06 1957-03-14 Haas Friedrich Maschf Vorrichtung zum Krumpfen fortlaufender Gewebebahnen in Kettenrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US886024A (en) * 1907-10-31 1908-04-28 Charles Wiebke Ribbozine-machine.
US1107771A (en) * 1914-04-29 1914-08-18 Eugene Louis Ezbelent Plaiting-machine for producing textile fabrics resembling velvet.
US1272924A (en) * 1918-01-04 1918-07-16 Bauer & Black Weft-straightening apparatus.
US1690334A (en) * 1927-04-19 1928-11-06 Durrant George Apparatus for straightening weft in fabrics
US2825117A (en) * 1952-06-20 1958-03-04 Bradford Dyers Ass Ltd Method and apparatus for treating sheet material
US2972795A (en) * 1957-08-13 1961-02-28 Crompton & Knowles Corp Process for treating textile materials
US3007223A (en) * 1958-05-29 1961-11-07 L & L Mfg Inc Process and apparatus for controlling shrinkage in and otherwise improving the characteristics of tubular fabrics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3247566A (en) * 1963-11-06 1966-04-26 Burklund Lab Inc Weft straightener
US3296676A (en) * 1964-06-03 1967-01-10 Dan C Page Jr Weft straightening apparatus and method

Also Published As

Publication number Publication date
DE1180342B (de) 1964-10-29
GB955363A (en) 1964-04-15

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