GB533924A - Improvements in and relating to weaving machinery - Google Patents

Improvements in and relating to weaving machinery

Info

Publication number
GB533924A
GB533924A GB24709/39A GB2470939A GB533924A GB 533924 A GB533924 A GB 533924A GB 24709/39 A GB24709/39 A GB 24709/39A GB 2470939 A GB2470939 A GB 2470939A GB 533924 A GB533924 A GB 533924A
Authority
GB
United Kingdom
Prior art keywords
fabric
photo
frequency
straightening
aug
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
Application number
GB24709/39A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston Co Ltd
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 British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB533924A publication Critical patent/GB533924A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • 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
    • D06H3/125—Detecting errors in the position of weft threads

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Looms (AREA)

Abstract

533,924. Photo-electric control of textile machinery. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 28, 1939, No. 24709 Convention date, Aug. 27, 1938. [Class 40 (iii)] [Also in Group XXXV] Alignment. Means for straightening woven material 1 in motion are operated electrically in accordance with the difference in frequency of two photo-electric devices 22, 30, one of which is stationary, the other being moved across the moving fabric along with the straightening means. Each device receives a beam of light after passing through the fabric so that its output frequency is determined by the rate at which the weft threads interrupt the beam. The moving device 30 is associated with a slotted disc 6 through which the beam passes so that it sweeps successive portions of the fabric as indicated by the quadrilateral 16 in Fig. 4 and the existence of bow or skew in any of those portions will increase or decrease the frequency of its output in comparison with that of the fixed device 22. These outputs are supplied to a valve circuit of the kind described in Specification 499,753 to control a reversible motor 42 operating a screw to determine the pressure applied by a spring to a roll 39 on a carriage 31 which is traversed with the second mentioned photo-electric device. This roll presses the fabric against a fixed plate and applies the required straightening force to the fabric.
GB24709/39A 1938-08-27 1939-08-28 Improvements in and relating to weaving machinery Expired GB533924A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US227148A US2196893A (en) 1938-08-27 1938-08-27 Weft straightening apparatus

Publications (1)

Publication Number Publication Date
GB533924A true GB533924A (en) 1941-02-24

Family

ID=22851952

Family Applications (1)

Application Number Title Priority Date Filing Date
GB24709/39A Expired GB533924A (en) 1938-08-27 1939-08-28 Improvements in and relating to weaving machinery

Country Status (3)

Country Link
US (1) US2196893A (en)
DE (1) DE702121C (en)
GB (1) GB533924A (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE748367C (en) * 1941-09-23 1944-11-01 C G Haubold Ag Device for controlling fabric webs for straight-edged winding
US2623262A (en) * 1951-03-22 1952-12-30 Gen Electric Weft straightener
US2737700A (en) * 1952-02-19 1956-03-13 Tubular Textile Machine Corp Stripe matching machine
DE1067401B (en) * 1957-04-02 1959-10-22 Albert Leimer, Augsburg Device for straightening warped weft threads in running fabric webs
US2972794A (en) * 1958-05-23 1961-02-28 Cranston Print Works Co Weft straightener
US2962596A (en) * 1958-10-01 1960-11-29 Leimer Albert Control system for the contactless scanning of textile webs and like sheet material
US3257563A (en) * 1962-10-22 1966-06-21 George J Laurent Photosensitive variable aperture scanning device
US3633037A (en) * 1969-10-15 1972-01-04 Perkin Elmer Corp Method and apparatus for observing, detecting and correcting periodic structures in a moving web
DE2850804C2 (en) * 1978-11-23 1983-08-04 Mahlo GmbH & Co KG, 8424 Saal Method and device for measuring the weft thread position of a moving textile material web
US4378161A (en) * 1980-08-01 1983-03-29 Sw Industries, Inc. Optical sensing system for determining the angular orientation of weft threads
US4656360A (en) * 1984-10-19 1987-04-07 Sw Industries, Inc. Optical sensing system for determining the orientation of weft threads in a wide variety of fabrics
IT1316845B1 (en) * 1999-04-30 2003-05-12 Pleva Gmbh PROCEDURE AND DEVICE TO DETERMINE THE ALIGNMENT OF LINEAR DIFFERENCES IN BELTS WITH A PREVALENT SURFACE EXTENSION,
DE19953130B4 (en) * 1999-04-30 2013-10-31 Pleva Gmbh Method for determining the alignment of line formations in flat, in particular longitudinally moved, webs of a structure
CN102862853A (en) * 2012-09-25 2013-01-09 吴江市晓昱喷气织造有限公司 Off-tracking alarming device for spinning
CN114395907B (en) * 2022-01-12 2023-03-14 绍兴金楚印染有限公司 Last tension mechanism of weft straightener

Also Published As

Publication number Publication date
US2196893A (en) 1940-04-09
DE702121C (en) 1941-01-30

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