GB1531930A - Apparatus for detecting holes in a piece of fabric - Google Patents

Apparatus for detecting holes in a piece of fabric

Info

Publication number
GB1531930A
GB1531930A GB40058/76A GB4005876A GB1531930A GB 1531930 A GB1531930 A GB 1531930A GB 40058/76 A GB40058/76 A GB 40058/76A GB 4005876 A GB4005876 A GB 4005876A GB 1531930 A GB1531930 A GB 1531930A
Authority
GB
United Kingdom
Prior art keywords
detectors
photo
fed
signals
compared
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
GB40058/76A
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.)
ARGUS ELECTRONIC IVERSEN
Original Assignee
ARGUS ELECTRONIC IVERSEN
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 ARGUS ELECTRONIC IVERSEN filed Critical ARGUS ELECTRONIC IVERSEN
Publication of GB1531930A publication Critical patent/GB1531930A/en
Expired legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04B—KNITTING
    • D04B35/00—Details of, or auxiliary devices incorporated in, knitting machines, not otherwise provided for
    • D04B35/10—Indicating, warning, or safety devices, e.g. stop motions
    • D04B35/20—Indicating, warning, or safety devices, e.g. stop motions responsive to defects, e.g. holes, in knitted products
    • 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
    • D06H3/08—Inspecting textile materials by photo-electric or television means

Landscapes

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

Abstract

1531930 Photo-electric defect detectors ARGUS ELECTRONIC VOLE IVERSEN 27 Sept 1976 [3 Oct 1975] 40058/76 Heading G1A To detect various forms of holes in a moving knitted fabric three photo-detectors are arranged behind a slot which is disposed transverse to the direction of motion, and the outputs of the detectors are summed to indicate defects extending across all three detectors, and are also compared to indicate defects adjacent only one or two of the detectors. In Fig. 1 the signals from detectors 1-3 are all fed to operational amplifier 12 where their sum is found; they are also each fed to operational amplifiers 4-6 where each is compared with the mean of the other two. After rectification at 7-9 and summation at 10 the result is displayed at 11. If a hole extends across all three detectors the signals on all the inputs to 4-6 are equal and cancel, so the only output is from 12; for any other sort of hole there will be an output at 11. Circuit details are given, Figs. 2, 3 (not shown), as are setting-up procedures.
GB40058/76A 1975-10-03 1976-09-27 Apparatus for detecting holes in a piece of fabric Expired GB1531930A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK448375AA DK138762B (en) 1975-10-03 1975-10-03 Apparatus for detecting holes in a piece of fabric.

Publications (1)

Publication Number Publication Date
GB1531930A true GB1531930A (en) 1978-11-15

Family

ID=8133937

Family Applications (1)

Application Number Title Priority Date Filing Date
GB40058/76A Expired GB1531930A (en) 1975-10-03 1976-09-27 Apparatus for detecting holes in a piece of fabric

Country Status (4)

Country Link
DE (1) DE2644502A1 (en)
DK (1) DK138762B (en)
GB (1) GB1531930A (en)
SE (1) SE7610907L (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CS217628B1 (en) * 1980-08-25 1983-01-28 Frantisek Piskula Apparatus for evaluating and detecting defects in textile fabrics,especially knitworks
FR2652161B1 (en) * 1989-09-15 1991-12-27 Inst Textile De France ENDOSCOPIC DEVICE FOR DETECTING DEFECTS ON CIRCULAR KNITTING MATERIAL.
DE4129126A1 (en) * 1991-09-02 1993-03-04 Memminger Iro Gmbh METHOD FOR DETECTING ERRORS IN A TEXTILE TRACK

Also Published As

Publication number Publication date
DE2644502A1 (en) 1977-04-14
DK448375A (en) 1977-04-04
DK138762C (en) 1979-04-02
SE7610907L (en) 1977-04-04
DK138762B (en) 1978-10-23

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee