GB727927A - Pin-hole detector - Google Patents

Pin-hole detector

Info

Publication number
GB727927A
GB727927A GB31759/52A GB3175952A GB727927A GB 727927 A GB727927 A GB 727927A GB 31759/52 A GB31759/52 A GB 31759/52A GB 3175952 A GB3175952 A GB 3175952A GB 727927 A GB727927 A GB 727927A
Authority
GB
United Kingdom
Prior art keywords
conveyer
photo
plates
pin
deflector
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
GB31759/52A
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.)
United States Steel Corp
Original Assignee
United States Steel Corp
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 United States Steel Corp filed Critical United States Steel Corp
Publication of GB727927A publication Critical patent/GB727927A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
    • G01N21/84—Systems specially adapted for particular applications
    • G01N21/88—Investigating the presence of flaws or contamination
    • G01N21/89—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles
    • G01N21/892—Investigating the presence of flaws or contamination in moving material, e.g. running paper or textiles characterised by the flaw, defect or object feature examined
    • G01N21/894—Pinholes

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Controlling Sheets Or Webs (AREA)
  • Sorting Of Articles (AREA)

Abstract

727,927. Photo-electric pin-hole detectors. UNITED STATES STEEL CORPORATION. Dec. 15, 1952 [March 18, 1952], No. 31759/52. Class 40 (3). In a photo-electric pin-hole detector in which sheets pass between a light beam on one side and a photo-electric cell on the other, the sheets then pass a second detector in which the illumination is from the other side. As shown, sheets from a pile 2 pass singly over a conveyer 6 between a light source 10 and photo-cell 12, and over a second conveyer 8 having a thickness gauge 20. At the end of conveyer 20 is a deflector 16 which is controlled by photo-cell 12 to pass sheets with a pin-hole to a bin 18. At the end of a further conveyer 24 is a deflector 28 operated by the thickness gauge. The plates are then carried up on a sloping conveyer 32 below which are permanent magnets 40 which hold the plates in contact with the conveyer, over an end pulley 36, the plates being held in contact by a further belt 48 and finally on the underside of belt 32 to which the plates are held by electromagnets 42. The plates are released when a photo-cell 52 detects their arrival at the lower end of the conveyer and de-energizes the electromagnets. Thus the plates fall on to conveyer 56 and are passed to a further pin-hole detector 66 with what was previously the trailing edge leading and inverted. This detector operates deflector 70, and a further switch-operated deflector 74 is provided to enable an operator to reject a plate after a visual inspection. Specifications 708,513 and 722,384 are referred to.
GB31759/52A 1952-03-18 1952-12-15 Pin-hole detector Expired GB727927A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US277319A US2695098A (en) 1952-03-18 1952-03-18 Method and apparatus for inspecting sheets

Publications (1)

Publication Number Publication Date
GB727927A true GB727927A (en) 1955-04-13

Family

ID=23060336

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31759/52A Expired GB727927A (en) 1952-03-18 1952-12-15 Pin-hole detector

Country Status (3)

Country Link
US (1) US2695098A (en)
BE (1) BE516602A (en)
GB (1) GB727927A (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2970691A (en) * 1954-05-12 1961-02-07 Ungerer Fritz Plant for sorting strips of material differing from one or more reference characteristics
US3065850A (en) * 1958-08-29 1962-11-27 Billie B Nixon Automatic mail facing and sorting machine
US3074550A (en) * 1959-03-20 1963-01-22 Continental Can Co Photoelectric inspection of glassware
US3156173A (en) * 1961-10-16 1964-11-10 James R Meyer Magnetic conveyance and transfer system for photographic processing
US3227444A (en) * 1963-08-30 1966-01-04 Eastman Kodak Co Reversal unit for document copying apparatus
US3247963A (en) * 1964-10-23 1966-04-26 Lumbermatic Inc Automatic green chain
JPS6453945A (en) * 1987-08-21 1989-03-01 Minolta Camera Kk Conveying device for sheet type processed body
JPH01185455A (en) * 1988-01-20 1989-07-25 Nec Home Electron Ltd Function inspection system

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1358061A (en) * 1919-07-25 1920-11-09 Horatio F Davidson Fruit-grading machine
US1385000A (en) * 1920-06-30 1921-07-19 Griffin Button Company Machine for reversing small articles
US1873860A (en) * 1926-02-15 1932-08-23 American Can Co Tin plate sorting machine
US2063485A (en) * 1933-10-16 1936-12-08 Button Machine Company Apparatus for selecting pearl buttons
US2070339A (en) * 1934-08-28 1937-02-09 Mark E Moore Can end inspector
GB468692A (en) * 1936-01-06 1937-07-06 Leonard Joseph Blumenthal Improvements in and relating to conveyers
US2312357A (en) * 1940-03-02 1943-03-02 American Can Co Sorting machine
US2527911A (en) * 1946-03-19 1950-10-31 Buccicone Dario Magnetic sheet piling
US2540766A (en) * 1947-07-21 1951-02-06 Fmc Corp Rotary box dump
US2570288A (en) * 1949-05-03 1951-10-09 Howard Paper Mills Inc Photoelectric inspection of sheet materials

Also Published As

Publication number Publication date
BE516602A (en)
US2695098A (en) 1954-11-23

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