GB866491A - Improvements relating to the treatment of textile fibres - Google Patents

Improvements relating to the treatment of textile fibres

Info

Publication number
GB866491A
GB866491A GB22315/56A GB2231556A GB866491A GB 866491 A GB866491 A GB 866491A GB 22315/56 A GB22315/56 A GB 22315/56A GB 2231556 A GB2231556 A GB 2231556A GB 866491 A GB866491 A GB 866491A
Authority
GB
United Kingdom
Prior art keywords
sliver
speed
signals
thickness
drafting
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
GB22315/56A
Inventor
Sydney Robinson
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 MALCOLM HOWDEN
STANLEY WHITAKER JACKSON
Original Assignee
JOHN MALCOLM HOWDEN
STANLEY WHITAKER JACKSON
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 MALCOLM HOWDEN, STANLEY WHITAKER JACKSON filed Critical JOHN MALCOLM HOWDEN
Priority to GB22315/56A priority Critical patent/GB866491A/en
Priority to US672691A priority patent/US2964803A/en
Priority to FR1186250D priority patent/FR1186250A/en
Publication of GB866491A publication Critical patent/GB866491A/en
Expired legal-status Critical Current

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H5/00Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32Regulating or varying draft
    • D01H5/38Regulating or varying draft in response to irregularities in material ; Measuring irregularities
    • D01H5/42Regulating or varying draft in response to irregularities in material ; Measuring irregularities employing electrical time-delay devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)

Abstract

866,491. Control of textile drafting-machines. JACKSON, S. W., ROBINSON, S., and HOWDEN, J. M., [trading as BRITISH NORTHERN ELECTRICAL APPLIANCES]. July 18, 1957 [July 18, 1956], No. 22315/56. Class 40 (1). [Also in Groups IX and XXIV] The drafting of a textile sliver is controlled by a variable-speed device coupling two drafting elements (e.g. pairs of rollers), this device operating in accordance with electrical signals which have been obtained from a detector responding to the instantaneous thickness or weight per unit length of the sliver as it approaches the drafting mechanism, the signals having been delayed by storage in a bank of capacitors for a time equal to that taken by the sliver to travel from the measuring point to the drafting point. In Fig. 2 the sliver 2 is drawn forward by the back rollers. 1 and the faster moving front rollers 4, and is intermediately operated upon by the faller pins 3. Power is taken from a prime mover 9 via suitable gearing 8, 7, 10, the last having a variable ratio. Electrical signals obtained from the detector 11 are delayed at 12 (as shown below) for a time dependent on the speed of rotation of the rollers 1 (i.e. on the linear speed of the sliver) and also on the distance between the points 3 and 11. The delayed signals are passed into a controller 13 which varies the gear ratio in 10 according to the thickness or density of the sliver at 11, thus ensuring constant thickness of the emergent sliver. Fig. 3 shows a preferred detector comprising a weight-loaded lever 16 pressing the sliver 2 between a roller 15 and a flanged pulley 14. The instantaneous thickness controls the position of the rack 19 and thus the magnitude of the signal from the potentiometer slider 21. Alternatively a radio-active source and detector can be used to measure the quantity of material in the sliver. The delay means for the signals (Fig. 4) comprises a bank of condensers connected successively to three wipers 26, 27, 28 by a rotating commutator; the first wiper charges each condenser to a value depending on the instantaneous value of the signal, the second extracts the signal later and the third removes any residual charge. The delay time depends on the angular separation of the first two wipers (adjustable in accordance with the distance between the points 3 and 11, Fig. 2) and the rotational speed of the commutator (proportional to the speed of rotation of the back rollers 1). The arrangement can be modified by joining the condensers between corresponding segments of two commutators and rotating the whole relative to fixed brushes. The delayed signals are passed through a cathode follower and D.C. amplifier (Fig. 5, not shown) to the field winding of a servomotor which is mechanically coupled to a tachogenerator supplying feed-back to the input of the D.C. amplifier. The speed of the servomotor is thus proportional to the instantaneous thickness of the sliver, and the motor controls the gear ratio of the device 10 (Fig. 2). The control can be direct on a differential between the input and output shafts (Fig. 6, not shown) or via a differential 44 (Fig. 7) whose input is obtained from the driven shaft 43 and compared with the speed of the servomotor 33. Any difference in speed moves the lever 46 to effect a mechanical change of the gear ratio. In another arrangement (Fig. 8, not shown) an electronic device produces a signal which is the difference between the outputs of the cathode follower and of a tachogenerator coupled to the driven shaft of the device 10. The signal then controls the eddy-current coupling of a magnetic clutch. More than one sliver can be fed in to the apparatus, measurement being made of the thickness of each sliver separately, with electrical combination of the signals, or the combined thickness can be measured. The system of the invention may be added to existing textile machinery. According to the Provisional Specification the signals can be delayed on a magnetic tape or drum, in an acoustic line or by storage tubes where the information resides in the charged state of dielectric material.
GB22315/56A 1956-07-18 1956-07-18 Improvements relating to the treatment of textile fibres Expired GB866491A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB22315/56A GB866491A (en) 1956-07-18 1956-07-18 Improvements relating to the treatment of textile fibres
US672691A US2964803A (en) 1956-07-18 1957-07-18 Treatment of textile fibers
FR1186250D FR1186250A (en) 1956-07-18 1957-07-18 Improvements in the treatment of textile fibers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB22315/56A GB866491A (en) 1956-07-18 1956-07-18 Improvements relating to the treatment of textile fibres

Publications (1)

Publication Number Publication Date
GB866491A true GB866491A (en) 1961-04-26

Family

ID=10177401

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22315/56A Expired GB866491A (en) 1956-07-18 1956-07-18 Improvements relating to the treatment of textile fibres

Country Status (3)

Country Link
US (1) US2964803A (en)
FR (1) FR1186250A (en)
GB (1) GB866491A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441984A (en) * 1966-07-28 1969-05-06 Jefferson Mills Inc Self-monitoring card

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB901730A (en) * 1957-08-03 1962-07-25 Cotton Silk & Man Made Fibres A control device for use in processes wherein lengths of materials are treated
DE1134010B (en) * 1958-06-14 1962-07-26 Hanseatische Motoren Ges M B H Control line for the warping of fiber ribbons
US3157915A (en) * 1959-07-09 1964-11-24 Geo W Bollman & Co Inc Control device
US3184798A (en) * 1962-06-04 1965-05-25 Burlington Industries Inc System for processing textile fibers
US3243853A (en) * 1962-12-10 1966-04-05 Ideal Ind Method and means for controlling the output of a textile drafting mechanism
CH400855A (en) * 1963-04-05 1965-10-15 Rieter Ag Maschf Automatic carding with a plurality of continuously fed cards
US3268955A (en) * 1964-02-07 1966-08-30 Burlington Industries Inc Drafting apparatus
US3314114A (en) * 1964-02-19 1967-04-18 Turbo Machine Co Apparatus for processing textiles
US3289255A (en) * 1965-07-09 1966-12-06 Joe R Whitehurst Control for textile drafting mechanism
US3402433A (en) * 1965-09-22 1968-09-24 Benjamin Booth Company Method and apparatus for drafting and coiling sliver
GB1135752A (en) * 1966-11-03 1968-12-04 Tmm Research Ltd Improvements in or relating to textile drafting systems
US3448492A (en) * 1967-05-15 1969-06-10 Jefferson Mills Inc Self-monitoring roving frame
US3604198A (en) * 1969-02-28 1971-09-14 Tmm Research Ltd Production of worsted-spun yarns
DE2331217A1 (en) * 1973-06-19 1975-01-16 Siemens Ag DEVICE FOR COMPARISON OF THE THICKNESS OF TAPE OR STRANDED MATERIAL IN TEXTILE PREPARATION
CH571072A5 (en) * 1974-02-28 1975-12-31 Zellweger Uster Ag
DE4215682B4 (en) * 1991-06-04 2004-07-22 Rieter Ingolstadt Spinnereimaschinenbau Ag Method and device for correcting the regulating point of application and the regulating intensity
DE4219777A1 (en) * 1992-06-17 1993-12-23 Rieter Ingolstadt Spinnerei Method and device for signal analysis of a regulating system
DE4301953C2 (en) * 1993-01-25 1994-12-15 Rieter Ingolstadt Spinnerei Procedure for setting and connecting drafting devices and draw frame
DE4307839A1 (en) * 1993-03-12 1994-09-15 Rieter Ingolstadt Spinnerei Method and device for automatically setting the speed ratios on a route
CZ2007273A3 (en) * 2007-04-17 2008-10-29 Výzkumný ústav textilních stroju Liberec a. s. Method of measuring weight of fiber strand and apparatus for making the same

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2518405A (en) * 1946-11-18 1950-08-08 Hendrik C A Van Duuren Signal storing and code converting radio telegraph system
DE900669C (en) * 1951-08-19 1953-12-28 Masing & Co Kommanditgesellsch Method and device for producing an even card sliver
US2812553A (en) * 1954-06-24 1957-11-12 Ind Res Inst Of The University Textile machine device
US2810936A (en) * 1955-09-08 1957-10-29 Altenburger Wilhelm Carding machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3441984A (en) * 1966-07-28 1969-05-06 Jefferson Mills Inc Self-monitoring card

Also Published As

Publication number Publication date
FR1186250A (en) 1959-08-18
US2964803A (en) 1960-12-20

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