GB1246099A - Method and apparatus for measuring fibres - Google Patents

Method and apparatus for measuring fibres

Info

Publication number
GB1246099A
GB1246099A GB195668A GB195668A GB1246099A GB 1246099 A GB1246099 A GB 1246099A GB 195668 A GB195668 A GB 195668A GB 195668 A GB195668 A GB 195668A GB 1246099 A GB1246099 A GB 1246099A
Authority
GB
United Kingdom
Prior art keywords
photo
diameter
fibre
fibres
cells
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
GB195668A
Inventor
Lionel Richard Baker
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.)
SIRA INST FORMERLY KNOWN AS BR
Original Assignee
SIRA INST FORMERLY KNOWN AS BR
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 SIRA INST FORMERLY KNOWN AS BR filed Critical SIRA INST FORMERLY KNOWN AS BR
Priority to GB195668A priority Critical patent/GB1246099A/en
Priority to DE19691900924 priority patent/DE1900924A1/en
Priority to NL6900376A priority patent/NL6900376A/xx
Priority to BE726769D priority patent/BE726769A/xx
Priority to FR6900401A priority patent/FR2000213A1/fr
Publication of GB1246099A publication Critical patent/GB1246099A/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
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
    • G01B11/10—Measuring arrangements characterised by the use of optical techniques for measuring diameters of objects while moving
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C17/00—Hand tools or apparatus using hand held tools, for applying liquids or other fluent materials to, for spreading applied liquids or other fluent materials on, or for partially removing applied liquids or other fluent materials from, surfaces
    • B05C17/02—Rollers ; Hand tools comprising coating rollers or coating endless belts
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
    • G01N33/36—Textiles

Abstract

1,246,099. Measuring diameters of fibres. SIRA INSTITUTE. 9 Jan., 1969 [12 Jan., 1968], No. 1956/68. Heading G4H. [Also in Division G1] The diameter of a fibre or wire is measured by directing a beam of monochromatic radiation on to the fibre to form a diffraction pattern and photo-electrically measuring the intensity of at least two portions of the pattern. A laser may be used to provide a coherent monochromatic beam 10 which is focused by lens 14 to form a diffraction pattern of the fibre 12 in a plane 18. A pair of adjacent photo-cells, connected in a differential arrangement, are located in a reference position several maxima away from the centre maximum 26. An increase (or decrease) in diameter of the fibre causes the selected maximum to move towards (or away from) the optical axis, resulting in a difference signal from the photo-cells indicating the sense of the diameter change. The output can control the rate of drawing of glass fibres when these are monitored by the apparatus. In an alternative arrangement, the photocells may be one on either side of the central maximum symmetrically disposed with respect to it. For large changes in diameter involving movement of a number of maxima at the detectors, counting circuitry may be provided. A number of fibres angled with respect to one another may be monitored, Fig. 3 (not shown), the mean diameter being measured. A movable photo-cell pair as in the Fig. 1 arrangement, or a pair of annular photo-cells, Fig. 3 (not shown), movable along the optical axis, may be used for this purpose. Alternatively a segment of the annular device may be used.
GB195668A 1968-01-12 1968-01-12 Method and apparatus for measuring fibres Expired GB1246099A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB195668A GB1246099A (en) 1968-01-12 1968-01-12 Method and apparatus for measuring fibres
DE19691900924 DE1900924A1 (en) 1968-01-12 1969-01-09 Method and device for determining the fiber thickness
NL6900376A NL6900376A (en) 1968-01-12 1969-01-09
BE726769D BE726769A (en) 1968-01-12 1969-01-10
FR6900401A FR2000213A1 (en) 1968-01-12 1969-01-13

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB195668A GB1246099A (en) 1968-01-12 1968-01-12 Method and apparatus for measuring fibres

Publications (1)

Publication Number Publication Date
GB1246099A true GB1246099A (en) 1971-09-15

Family

ID=9731011

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195668A Expired GB1246099A (en) 1968-01-12 1968-01-12 Method and apparatus for measuring fibres

Country Status (5)

Country Link
BE (1) BE726769A (en)
DE (1) DE1900924A1 (en)
FR (1) FR2000213A1 (en)
GB (1) GB1246099A (en)
NL (1) NL6900376A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892057A (en) * 1972-02-25 1973-11-29
JPS5026848U (en) * 1973-07-02 1975-03-27

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4123936A1 (en) * 1991-07-19 1993-01-21 Thueringische Faser Ag Schwarz Automatic, non-contact filament prodn. test - has continuous laser monitoring of cross=section and quality, measuring thread double diffraction by phase difference
DE4123935A1 (en) * 1991-07-19 1993-01-21 Thueringische Faser Ag Schwarz Automatic, non-contact filament prodn. test - continuously monitors double diffraction and phase difference using laser appts.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4892057A (en) * 1972-02-25 1973-11-29
JPS5026848U (en) * 1973-07-02 1975-03-27

Also Published As

Publication number Publication date
NL6900376A (en) 1969-07-15
FR2000213A1 (en) 1969-08-29
BE726769A (en) 1969-06-16
DE1900924A1 (en) 1969-07-31

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