US3748648A - Control mechanism for producing random-like effects on textile materials - Google Patents

Control mechanism for producing random-like effects on textile materials Download PDF

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Publication number
US3748648A
US3748648A US00158961A US3748648DA US3748648A US 3748648 A US3748648 A US 3748648A US 00158961 A US00158961 A US 00158961A US 3748648D A US3748648D A US 3748648DA US 3748648 A US3748648 A US 3748648A
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output
signal
input
counter
signals
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US00158961A
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English (en)
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C Pugh
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Burlington Industries Inc
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Burlington Industries Inc
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/32—Regulating or varying draft
    • D01H5/36—Regulating or varying draft according to a pre-arranged pattern, e.g. to produce slubs
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/84—Generating pulses having a predetermined statistical distribution of a parameter, e.g. random pulse generators

Definitions

  • the minimum length of the spaces and slubs can be independently set on switches which are manually accessible from the exterior of the device and also the ratio between minimum and maximum slub and space widths can be also set on other switches.
  • the circuitry automatically causes the length of the slubs and spaces produced to vary within this range defined between the minimum and maximum values, choosing in a pseudo-random manner successive ones of a fixed number of divisions within that range. In the embodiment described below, that fixed number is 14 divisions between the minimum and maximum length of the slubs and spaces.
  • the circuitry can further be caused to operate in a mode whereby the space or slub length remains constant and another mode in which each of the possible separations in the pseudo-random pattern is produced in succession but not necessarily in order.
  • the circuitry can be caused, by manual operation of a switch on the exterior of the device, to produce a slub or space of maximum or minimum length.
  • the invention relates in part to a circuit for producing alternate electrical signals, the length of which is pseudorandomly determined, and to an apparatus for producing slub thread or yarn.
  • a slub is a thickened place in a yarn or thread which, when it unintentionally results, causes a flaw in any fabric which is woven from the thread or yarn.
  • these slubs are produced at unpatterned intervals along a thread or yarn, cloth which is woven from such yarn has a pleasing appearance and is widely used for draperies and other similar fabrics.
  • Such yarns are referred to as slub or novelty yarns.
  • the separation between adjacent slubs is random, or at least pseudo-random, the woven cloth will have undesirable patterns appearing in it which detract from its appearance and reduce its commercial value.
  • One way to produce this random slub effect in yarn or thread which is being spun is by deliberately over feeding the back roller in the drafting zone on the spinning frame. This can be accomplished by connecting an electric clutch to the back roller through a conventional gear train and a mechanical over riding clutch mechanism so that the electric clutch, when energized, connects a fast" speed to the back roll which increases the stock in the draft zone which in turn causes an enlargement in the yarn, such enlargement being a slub.
  • the spinning frame gearing and speeds are set such that when the electric clutch is not energized the proper size of straight yarn will be produced.
  • One device currently employed for generating a pattern of on" and "off signals for the clutch to cause slubs to be produced employs a chain loop which has dogs on it which are either welded to the chain or whose position can be varied.
  • the chain is driven around a fixed path so that the dogs successively close an electrical contact or otherwise cause the clutch to be actuated whenever a dog is encountered.
  • the slub pattern is constant and repetitive enough so that undesirable patterns result in the woven product, which necessitate weaving on a multi-shuttle loom in an effort to reduce the patterning effect to a minimum. Varying the yarn slub pattern by changing the location of the dogs or replacing the chain is a tiresome and time consuming activity so that it is very difficult to in any way change or control the separation between adjacent slubs or the length of the slubs themselves.
  • Each randomizer has four yarn design wheels with each wheel representing a different yarn style. The styles are created by the particular physical arrangement of cams on the design wheel and the sequence in which they energize the microswitches.
  • there is a defnite slub pattern which causes undesirable patterns in cloth woven from the yarn.
  • the master slub control unit in this device can only control a limited number of frames and twelve has been that number in the past.
  • Yet another device now employed is similar to the chain type slub control mechanism and employs a precut punched paper tape which has been made in a length of 30 meters.
  • This device permits production of yarn lengths up to 2720 or more meters without a pattern repeat.
  • the only way that slub effects can be changed is to change the tape itself and this involves a lengthy and expensive tape punching process so that the variability of the device is quite limited.
  • the slub thickness, while variable is variable only within very narrow limits.
  • the present invention relates, in one of its aspects, to a novel circuit, having a number of novel subcombinations thereof, for producing alternate on and off signals which can be used to control clutches of the type discussed above or for controlling any other suitable circuitry or equipment.
  • This circuit produces an extremely long pseudo-random pattern of effect dispersion to give a true random-like appearance in cloth which is woven from such slub yarns or threads.
  • the minimum length of the spaces and slubs can be independently set on switches which are manually accessible from the exterior of the device and also the ratio between minimum and maximum slub and space widths can be also set on other switches.
  • the circuitry automatically causes the length of the slubs and spaces produced to vary within this range defined between the minimum and maximum values, choosing in a pseudorandom manner successive ones of a fixed number of divisions within that range. In the embodiment described below, that fixed number is l4 divisions between the minimum and maximum length of the slubs and spaces.
  • the circuitry can further be caused to operate in a mode whereby the space or slub length remains constant and another mode in which each of the possible separations in the pseudo-random pattern is produced in succession but not necessarily in order.
  • the circuitry can be caused by manual operation of a switch on the exterior of the device to produce a slub or space of maximum or minimum length.
  • FIG. I shows a view of the front panel of a housing for the novel circuit of this invention with the switches which control the spaces and slubs manually accessible from the exterior of the housing;
  • FIGS. 2A and 2B show a block diagram of one embodiment of this invention for producing alternate pulses which in turn can then be employed to produce spaces and slubs on a yarn or thread;
  • FIGS. 3A through 3.! show a detailed circuit schematic of the embodiment of the invention shown in block diagram in FIGS. 2A and 28;
  • FIG. 4 shows a block diagram of the manner in which the various sheets comprising FIGS. 3A to 3] fit together to form the complete schematic;
  • FIG. 5 shows a simplified view of an apparatus for producing slub yarn whereby an electric clutch is energized to produce a slub

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Electronic Switches (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Feedback Control In General (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
US00158961A 1971-07-01 1971-07-01 Control mechanism for producing random-like effects on textile materials Expired - Lifetime US3748648A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US15896171A 1971-07-01 1971-07-01
US360468A US3868496A (en) 1971-07-01 1973-05-15 Control mechanism for producing random-like effects on textile materials

Publications (1)

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US3748648A true US3748648A (en) 1973-07-24

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US00158961A Expired - Lifetime US3748648A (en) 1971-07-01 1971-07-01 Control mechanism for producing random-like effects on textile materials
US360468A Expired - Lifetime US3868496A (en) 1971-07-01 1973-05-15 Control mechanism for producing random-like effects on textile materials

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US360468A Expired - Lifetime US3868496A (en) 1971-07-01 1973-05-15 Control mechanism for producing random-like effects on textile materials

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US (2) US3748648A (https=)
CA (1) CA956368A (https=)
DE (1) DE2231679A1 (https=)
FR (1) FR2155213A5 (https=)
GB (1) GB1391670A (https=)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522247A1 (de) * 1974-05-20 1975-11-27 Matsushita Electric Ind Co Ltd Kanalwaehler
US4311000A (en) * 1979-08-29 1982-01-19 Burlington Industries, Inc. Novelty yarn production
USRE31808E (en) * 1979-08-29 1985-01-22 Burlington Industries, Inc. Novelty yarn production
US5148586A (en) * 1991-02-05 1992-09-22 Basf Corporation Crimped continuous filament yarn with color-point heather appearance
US5619849A (en) * 1994-08-26 1997-04-15 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand yarn in twisting together at least two yarns and yarn and fabric made by said method
US5673549A (en) * 1994-08-26 1997-10-07 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
US5901544A (en) * 1994-08-26 1999-05-11 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
EP1662027A1 (en) * 2004-11-30 2006-05-31 Kabushiki Kaisha Toyota Jidoshokki Device for producing special yarn

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4365145A (en) * 1978-04-24 1982-12-21 Milliken Research Corporation Random signal generator for the manufacture of slub open end spun yarn
ATE7381T1 (de) * 1979-04-10 1984-05-15 The Post Office Lichtleitfaser mit brechungsindexgradient.
JPS60119228A (ja) * 1983-12-02 1985-06-26 Howa Mach Ltd 特殊糸の製造装置
JP2860443B2 (ja) * 1994-02-14 1999-02-24 日清紡績株式会社 精紡方法及び精紡機
US5813210A (en) * 1995-03-01 1998-09-29 Toshimitsu Musha Twisting method and twisting frame utilizing I/F fluctuations
US6421935B1 (en) 1999-12-15 2002-07-23 Michael D. Bartlett Rocking shoe
US6877916B2 (en) * 2003-03-17 2005-04-12 Irena Khaikin Method for generating non-repeating patterns for printing

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3208008A (en) * 1963-02-12 1965-09-21 Richard A Hills Random width and spaced pulsed generator
US3247815A (en) * 1962-11-06 1966-04-26 Image Designs Inc Systems and methods for reproducing colored patterns in carpets and other manufactured articles
US3366779A (en) * 1965-07-20 1968-01-30 Solartron Electronic Group Random signal generator
US3492587A (en) * 1967-05-25 1970-01-27 Westinghouse Air Brake Co Random function generator
US3529298A (en) * 1967-08-23 1970-09-15 Ibm Graphical design of textiles
US3612845A (en) * 1968-07-05 1971-10-12 Reed C Lawlor Computer utilizing random pulse trains
US3614399A (en) * 1968-08-30 1971-10-19 John C Linz Method of synthesizing low-frequency noise
US3622905A (en) * 1952-09-04 1971-11-23 Us Army Random pulse generator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2558447A (en) * 1948-12-30 1951-06-26 Rca Corp High-speed frequency divider
US2970763A (en) * 1957-02-28 1961-02-07 Sperry Rand Corp Predetermined pulse selector
US3750603A (en) * 1971-04-05 1973-08-07 Clevepak Corp Apparatus for controlling a sewing machine thread cutter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622905A (en) * 1952-09-04 1971-11-23 Us Army Random pulse generator
US3247815A (en) * 1962-11-06 1966-04-26 Image Designs Inc Systems and methods for reproducing colored patterns in carpets and other manufactured articles
US3208008A (en) * 1963-02-12 1965-09-21 Richard A Hills Random width and spaced pulsed generator
US3366779A (en) * 1965-07-20 1968-01-30 Solartron Electronic Group Random signal generator
US3492587A (en) * 1967-05-25 1970-01-27 Westinghouse Air Brake Co Random function generator
US3529298A (en) * 1967-08-23 1970-09-15 Ibm Graphical design of textiles
US3612845A (en) * 1968-07-05 1971-10-12 Reed C Lawlor Computer utilizing random pulse trains
US3614399A (en) * 1968-08-30 1971-10-19 John C Linz Method of synthesizing low-frequency noise

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2522247A1 (de) * 1974-05-20 1975-11-27 Matsushita Electric Ind Co Ltd Kanalwaehler
US4311000A (en) * 1979-08-29 1982-01-19 Burlington Industries, Inc. Novelty yarn production
USRE31808E (en) * 1979-08-29 1985-01-22 Burlington Industries, Inc. Novelty yarn production
US5148586A (en) * 1991-02-05 1992-09-22 Basf Corporation Crimped continuous filament yarn with color-point heather appearance
US5619849A (en) * 1994-08-26 1997-04-15 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand yarn in twisting together at least two yarns and yarn and fabric made by said method
US5673549A (en) * 1994-08-26 1997-10-07 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
US5901544A (en) * 1994-08-26 1999-05-11 Caress Yarns, Inc. Method and apparatus for producing randomly variegated multiple strand twisted yarn and yarn and fabric made by said method
EP1662027A1 (en) * 2004-11-30 2006-05-31 Kabushiki Kaisha Toyota Jidoshokki Device for producing special yarn
CN100443643C (zh) * 2004-11-30 2008-12-17 株式会社丰田自动织机 特殊纱线制造装置

Also Published As

Publication number Publication date
DE2231679A1 (de) 1973-01-11
CA956368A (en) 1974-10-15
US3868496A (en) 1975-02-25
FR2155213A5 (https=) 1973-05-18
GB1391670A (en) 1975-04-23

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Owner name: BI/MS HOLDINGS I INC., A DE. CORP.

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:BURLINGTON INDUSTRIES, INC.,;REEL/FRAME:004811/0598

Effective date: 19870903