GB1076691A - Improvements in or relating to methods and apparatus for testing the surface roughness of a web - Google Patents

Improvements in or relating to methods and apparatus for testing the surface roughness of a web

Info

Publication number
GB1076691A
GB1076691A GB4014762A GB4014762A GB1076691A GB 1076691 A GB1076691 A GB 1076691A GB 4014762 A GB4014762 A GB 4014762A GB 4014762 A GB4014762 A GB 4014762A GB 1076691 A GB1076691 A GB 1076691A
Authority
GB
United Kingdom
Prior art keywords
web
surface roughness
arms
testing
thickness
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
GB4014762A
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.)
JOHN GRAHAM GOFFEY
Arjo Wiggins Ltd
Original Assignee
JOHN GRAHAM GOFFEY
Wiggins Teape Research and Development 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 JOHN GRAHAM GOFFEY, Wiggins Teape Research and Development Ltd filed Critical JOHN GRAHAM GOFFEY
Priority to GB4014762A priority Critical patent/GB1076691A/en
Publication of GB1076691A publication Critical patent/GB1076691A/en
Priority to GB2024868A priority patent/GB1172331A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
    • G01B5/28—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces
    • G01B5/285—Measuring arrangements characterised by the use of mechanical techniques for measuring roughness or irregularity of surfaces for controlling eveness

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • A Measuring Device Byusing Mechanical Method (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)

Abstract

1,076,691. Measuring surface roughness electrically; photo-electric thickness measuring. WIGGINS TEAPE RESEARCH & DEVELOPMENT Ltd. and J. G. GOFFEY. Jan.13, 1964 [Oct. 23, 1962], No.40147/62. Headings G1A, G1M and G1N] In a device for testing surface roughness of a paper web 12 moving over a drum 11, two rollers 15, 16 spaced in the direction of travel of the web, are biased on to the drum 11 and are carried on respective arms 18, 19 pivoted at 23, 24 and carrying between their upper ends a microswitch 32 sensitive to relative movement of the two arms. Thus the switch is not affected by overall changes in web thickness as both arms then move together; but, if a local variation in thickness affects one roller only, the switch closes and operates a marking device. The microswitch may be replaced by a differential transformer or a capacitor transducer. Alternatively a light source may be placed on one arm and a photo-electric cell on the other, so that movement of the one arm alters the amount of light passing through a fixed screen to the cell. The rollers may be applied to a web portion not actually on the roller, and several of these surface testing devices may be mounted side by side across the width of the web.
GB4014762A 1962-10-23 1962-10-23 Improvements in or relating to methods and apparatus for testing the surface roughness of a web Expired GB1076691A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB4014762A GB1076691A (en) 1962-10-23 1962-10-23 Improvements in or relating to methods and apparatus for testing the surface roughness of a web
GB2024868A GB1172331A (en) 1962-10-23 1968-04-29 Improvements in or relating to Methods and Apparatus for Testing the Surface Roughness of a Web

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB4014762A GB1076691A (en) 1962-10-23 1962-10-23 Improvements in or relating to methods and apparatus for testing the surface roughness of a web
GB2024868A GB1172331A (en) 1962-10-23 1968-04-29 Improvements in or relating to Methods and Apparatus for Testing the Surface Roughness of a Web

Publications (1)

Publication Number Publication Date
GB1076691A true GB1076691A (en) 1967-07-19

Family

ID=10142841

Family Applications (2)

Application Number Title Priority Date Filing Date
GB4014762A Expired GB1076691A (en) 1962-10-23 1962-10-23 Improvements in or relating to methods and apparatus for testing the surface roughness of a web
GB2024868A Expired GB1172331A (en) 1962-10-23 1968-04-29 Improvements in or relating to Methods and Apparatus for Testing the Surface Roughness of a Web

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB2024868A Expired GB1172331A (en) 1962-10-23 1968-04-29 Improvements in or relating to Methods and Apparatus for Testing the Surface Roughness of a Web

Country Status (1)

Country Link
GB (2) GB1076691A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140553A (en) * 1983-05-24 1984-11-28 Rieter Ag Maschf Automat location system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2140553A (en) * 1983-05-24 1984-11-28 Rieter Ag Maschf Automat location system
US4703617A (en) * 1983-05-24 1987-11-03 Rieter Machine Works, Ltd. Automat location system

Also Published As

Publication number Publication date
GB1172331A (en) 1969-11-26

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