GB841409A - Optical apparatus for observing opposed surfaces of a moving strip - Google Patents

Optical apparatus for observing opposed surfaces of a moving strip

Info

Publication number
GB841409A
GB841409A GB9902/58A GB990258A GB841409A GB 841409 A GB841409 A GB 841409A GB 9902/58 A GB9902/58 A GB 9902/58A GB 990258 A GB990258 A GB 990258A GB 841409 A GB841409 A GB 841409A
Authority
GB
United Kingdom
Prior art keywords
strip
mirror
mirrors
rocking
drum
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
GB9902/58A
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.)
NAT LAB AND Manufacturing CORP
Original Assignee
NAT LAB AND Manufacturing 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 NAT LAB AND Manufacturing CORP filed Critical NAT LAB AND Manufacturing CORP
Publication of GB841409A publication Critical patent/GB841409A/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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
    • G01P3/00—Measuring linear or angular speed; Measuring differences of linear or angular speeds
    • G01P3/36—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light
    • G01P3/40—Devices characterised by the use of optical means, e.g. using infrared, visible, or ultraviolet light using stroboscopic means

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General 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)
  • Textile Engineering (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Electromagnetism (AREA)
  • Power Engineering (AREA)
  • Facsimile Scanning Arrangements (AREA)

Abstract

841,409. Optical apparatus. NATIONAL LABORATORIES & MANUFACTURING CORPORATION. March, 27, 1958 [April 26, 1957], No. 9902/58. Class 97(1) Apparatus for observing opposite sides of a moving strip comprises two rotating mirror drums, on to each of which light is reflected from the strip by a mirror, the mirror drum being rotated in synchronization with the strip movement. A rocking mirror is associated with each mirror drum so that each side of the strip would be seen by a viewer looking into both rocking mirrors. As shown in Fig. 2, each side of the moving strip 15 is illuminated by lamps 24 and the light therefrom is reflected by mirrors 16, 17 through units 28, 29 to an observer at 20. Each unit may be as described in Specification 754,026 and comprise a mirror drum 32, Fig. 3, which is rotated in synchronism with the movement of the strip, and has associated therewith a rocking mirror 59. An observer of the two mirrors 59 may see a stationary image of each side of the strip. Each mirror 59 is clamped to a rigid member 61 carrying a cam roller 71, which is resiliently pressed against the hub of the associated mirror drum, the latter being geared at 49 to a selsyn motor 53 connected to another selsyn motor driven in synchronization with the drive for the strip 15.
GB9902/58A 1957-04-26 1958-03-27 Optical apparatus for observing opposed surfaces of a moving strip Expired GB841409A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US841409XA 1957-04-26 1957-04-26

Publications (1)

Publication Number Publication Date
GB841409A true GB841409A (en) 1960-07-13

Family

ID=22183122

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9902/58A Expired GB841409A (en) 1957-04-26 1958-03-27 Optical apparatus for observing opposed surfaces of a moving strip

Country Status (1)

Country Link
GB (1) GB841409A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065213A (en) * 1969-10-22 1977-12-27 Curt Lennart Nyman Apparatus for and method of inspecting tubular textile goods

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065213A (en) * 1969-10-22 1977-12-27 Curt Lennart Nyman Apparatus for and method of inspecting tubular textile goods

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