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GB1386050A - Apparatus for detecting irregularities in continuously moving webs - Google Patents

Apparatus for detecting irregularities in continuously moving webs

Info

Publication number
GB1386050A
GB1386050A GB1246073A GB1246073A GB1386050A GB 1386050 A GB1386050 A GB 1386050A GB 1246073 A GB1246073 A GB 1246073A GB 1246073 A GB1246073 A GB 1246073A GB 1386050 A GB1386050 A GB 1386050A
Authority
GB
United Kingdom
Prior art keywords
web
cylinder
irregularities
spot
shaft
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
GB1246073A
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.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
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 EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Publication of GB1386050A publication Critical patent/GB1386050A/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
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material
    • B65H63/024—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials
    • B65H63/028—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element
    • B65H63/032—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic
    • B65H63/0321—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators
    • B65H63/0324—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to reduction in material tension, failure of supply, or breakage, of material responsive to breakage of materials characterised by the detecting or sensing element electrical or pneumatic using electronic actuators using photo-electric sensing means, i.e. the defect signal is a variation of light energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H63/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package
    • B65H63/06—Warning or safety devices, e.g. automatic fault detectors, stop-motions ; Quality control of the package responsive to presence of irregularities in running material, e.g. for severing the material at irregularities ; Control of the correct working of the yarn cleaner
    • B65H63/062—Electronic slub detector
    • B65H63/065—Electronic slub detector using photo-electric sensing means, i.e. the defect signal is a variation of light energy
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Landscapes

  • Engineering & Computer Science (AREA)
  • Quality & Reliability (AREA)
  • Textile Engineering (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

1386050 Web detectors E I DU PONT DE NEMOURS & CO 15 March 1973 [15 March 1972] 12460/73 Heading B8R [Also in Division G1] Apparatus for detecting irregularities in a continuous web 10, Fig. 1, moving along a path comprises a shaft 13 disposed above the path and supporting for eccentric movement thereon a cylinder 16 whose outer surface engages the web pressed against the cylinder by a guide 44, and a member 23 mounted for angular movement about said shaft into engagement with the web with an edge and means 15, 40 for detecting movement of said cylinder and said member occasioned by web irregularities. Irregularities in the web, e.g. knots are detected by the cylinder 16 whose shaft 13 is mounted on a bracket 14 which supports a photo-electric receiver 40 projecting a beam of light through an aperture in the member 23 on to a reflecting spot 15 on the cylinder 16. A knot in the web 10 displaces the eccentrically mounted cylinder upwardly jointly with the spot 15 and causes a signal to be generated. Tension of web is controlled or web break is detected by the member 23 whose edge abuts the web surface. Reduced tension or web break cause the member 23 to pivot downwardly whereby a shield 26 on the member obscures the spot 15 and causes a signal to be generated. The signals may be used to operate alarm devices, recorders and/or shut down the web transport device.
GB1246073A 1972-03-15 1973-03-15 Apparatus for detecting irregularities in continuously moving webs Expired GB1386050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US23496672A 1972-03-15 1972-03-15

Publications (1)

Publication Number Publication Date
GB1386050A true GB1386050A (en) 1975-03-05

Family

ID=22883504

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1246073A Expired GB1386050A (en) 1972-03-15 1973-03-15 Apparatus for detecting irregularities in continuously moving webs

Country Status (4)

Country Link
US (1) US3763373A (en)
CA (1) CA957699A (en)
GB (1) GB1386050A (en)
NL (1) NL7303571A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4612842A (en) * 1985-08-14 1986-09-23 E. I. Du Pont De Nemours And Company Apparatus for cutting filamentary material
US5694524A (en) * 1994-02-15 1997-12-02 R. R. Donnelley & Sons Company System and method for identifying conditions leading to a particular result in a multi-variant system
NL1033385C2 (en) * 2007-02-13 2008-08-14 Jaap Hendrik Martin Berends Ajar stand holder.

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3037381A (en) * 1959-05-13 1962-06-05 Warren S D Co Bump detector
CH382477A (en) * 1961-03-30 1964-09-30 Ferag Ag Counting device
DE1164708B (en) * 1961-11-16 1964-03-05 Hans Biel Fa Device for detecting surface defects on moving material webs, in particular paper webs
DE1199022B (en) * 1962-06-22 1965-08-19 Paul Nash Photoelectric device for detecting surface elevations, e.g. B. Faeltchen, on moving webs of flat material with a normally smooth surface, z. B. paper
US3327398A (en) * 1963-05-30 1967-06-27 Canada Glazed Papers Ltd Sheet material inspection apparatus
US3316760A (en) * 1964-11-09 1967-05-02 Teledyne Inc Seam detector
US3363107A (en) * 1964-12-07 1968-01-09 Du Pont Tow flaw apparatus wherein the flaw vibrates a pivoted element between a light source and photocell
US3363458A (en) * 1966-02-11 1968-01-16 Cutler Hammer Inc Apparatus for detecting surface imperfections on moving webs
DE6915129U (en) * 1969-04-16 1969-09-25 Hell Rudolf Dr Ing Fa DEVICE FOR DETECTING PINCHES, KNOTS OR SIMILAR DEFECTS IN CONTINUOUS MATERIALS, IN PARTICULAR PAPER

Also Published As

Publication number Publication date
US3763373A (en) 1973-10-02
NL7303571A (en) 1973-09-18
CA957699A (en) 1974-11-12

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees