GB861225A - Apparatus for detecting variations in size of filamentary material - Google Patents

Apparatus for detecting variations in size of filamentary material

Info

Publication number
GB861225A
GB861225A GB1999856A GB1999856A GB861225A GB 861225 A GB861225 A GB 861225A GB 1999856 A GB1999856 A GB 1999856A GB 1999856 A GB1999856 A GB 1999856A GB 861225 A GB861225 A GB 861225A
Authority
GB
United Kingdom
Prior art keywords
signal
thread
output
amplifier
variations
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
GB1999856A
Inventor
Alan Grant Mckay
George Syke
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.)
LASTEX YARN AND LACTRON THREAD
Original Assignee
LASTEX YARN AND LACTRON THREAD
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 LASTEX YARN AND LACTRON THREAD filed Critical LASTEX YARN AND LACTRON THREAD
Priority to GB1999856A priority Critical patent/GB861225A/en
Publication of GB861225A publication Critical patent/GB861225A/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
    • B65H63/06—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)
  • Textile Engineering (AREA)
  • Quality & Reliability (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Filamentary Materials, Packages, And Safety Devices Therefor (AREA)

Abstract

861,225. Photo-electric gauging. LASTEX YARN & LACTRON THREAD Ltd. June 26, 1957 [June 28, 1956], No. 19998/56. Class 40 (3). The variations in diameter of a thread or other filamentary material 22 moving over an aperture 24 in a screen 23 are detected by a phototransistor unit 26 which receives light via the aperture from a source 25. The A.C. component of the phototransistor output signal, which has an amplitude which varies with the variations in thread diameter, is applied with a superimposed 3 kc/s. signal from the oscillation 28 to an amplifier 32 which is biased to limit signals exceeding predetermined positive and negative valves (waveform 33). The amplifier output is applied to a H.P. filter 34 which removes the original photo-transistor signal whereby its output consists of a 3 kc/s. signal which drops to zero when a variation in thread diameter produces a signal exceeding the value which produces a limiting action in the amplifier 32. This signal is amplified and rectified in a voltage doubling circuit 38. The circuit 38 provides a negative output which is applied with a fixed positive bias to the grid of a trigger valve 40 which fires when the 3 kc/s. signal drops to zero. The trigger valve operates a neon indicator, an audible alarm or stops the thread processing line and continues to conduct until manually reset.
GB1999856A 1956-06-28 1956-06-28 Apparatus for detecting variations in size of filamentary material Expired GB861225A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1999856A GB861225A (en) 1956-06-28 1956-06-28 Apparatus for detecting variations in size of filamentary material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1999856A GB861225A (en) 1956-06-28 1956-06-28 Apparatus for detecting variations in size of filamentary material

Publications (1)

Publication Number Publication Date
GB861225A true GB861225A (en) 1961-02-15

Family

ID=10138636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1999856A Expired GB861225A (en) 1956-06-28 1956-06-28 Apparatus for detecting variations in size of filamentary material

Country Status (1)

Country Link
GB (1) GB861225A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3494236A (en) * 1966-04-25 1970-02-10 Jonan Electric Co Ltd Circuit system for yarn rejection device
DE1535079B1 (en) * 1962-12-22 1975-07-24 Loepfe Ag Geb Measuring device for the detection of thickness errors of continuous thread-like material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1535079B1 (en) * 1962-12-22 1975-07-24 Loepfe Ag Geb Measuring device for the detection of thickness errors of continuous thread-like material
US3494236A (en) * 1966-04-25 1970-02-10 Jonan Electric Co Ltd Circuit system for yarn rejection device

Similar Documents

Publication Publication Date Title
GB1290537A (en)
GB1498742A (en) Ultrasonic sensor for detecting the passage of articles
US3513463A (en) Sound monitor intruder alarm system
FR72083E (en) Ferromagnetism detection and measurement device
GB1272813A (en) Improvements in method and apparatus for measuring uniformity of tyres
GB1401250A (en) Apparatus for surveying pulse frequency
GB861225A (en) Apparatus for detecting variations in size of filamentary material
GB936623A (en) Improvements in or relating to apparatus for detecting small particles in a space
ES445837A1 (en) Moisture indicating apparatus
GB1222677A (en) Method and circuit arrangement for setting the amplifying factor of a photo-multiplier
GB801489A (en) Improvements in and relating to apparatus for detecting the presence of foreign bodies in the bottom of transparent vessels
SE7909517L (en) DETECTOR AND WAY TO CONTROL THIS
FR1140947A (en) Device usable in particular for the calibration of leak detection installations and similar applications
GB948989A (en) Photoelectric trend detector
JPS5649966A (en) Plane indication device and storing method therefor
SU102486A1 (en) A device for counting very light parts
GB777651A (en) Improvements in or relating to devices for determining the oxygen saturation of the blood
GB887599A (en) Improvements relating to the determination of the denier of yarns
GB1164719A (en) Methods of Determining the Length of Fibres and Apparatus for Carrying Out the Method
SU553543A1 (en) Device for measuring the amplitude of single pulses
GB887547A (en) Improvements relating to the detection and removal of defective spontaneous cross section variation in textile material
FR1249226A (en) Device for locating and counting irregularities in the diameter of a textile thread or the like
JPS5470881A (en) Flaw generation monitor of member
JPS56154628A (en) Device for detecting and processing vibration and loose part
JPS5443670A (en) Peak voltage position detection system