US3459143A - Tufting machine pattern variation device - Google Patents

Tufting machine pattern variation device Download PDF

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Publication number
US3459143A
US3459143A US508978A US3459143DA US3459143A US 3459143 A US3459143 A US 3459143A US 508978 A US508978 A US 508978A US 3459143D A US3459143D A US 3459143DA US 3459143 A US3459143 A US 3459143A
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United States
Prior art keywords
pattern
control
signals
loops
reversing
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Expired - Lifetime
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US508978A
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English (en)
Inventor
Ronald Ellison
John Pritchard
Norman Pickles
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Ellison Tufting Machinery Ltd
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Ellison Tufting Machinery Ltd
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    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05C—EMBROIDERING; TUFTING
    • D05C15/00—Making pile fabrics or articles having similar surface features by inserting loops into a base material

Definitions

  • a textile tufting machine incorporating means for reversing the effect which signals from a rotating pattern element have on a pile loop height control means, means for reversing the direction of rotation of the pattern element itself, and selectively programmed means (such as a multi-level stepping switch controlled by a punched card) for controlling both of the aforementioned reversing means, so that a single pattern element may be used to provide a wide variety of differing patterns.
  • the present invention concerns textile tufting machines having pile loop height defining mechanism for the formation of a pattern of pile loops of normal and reduced height on a backing fabric.
  • An object of the invention is to enable a single patterning element to be utilized not only for production of repeats of the corresponding pattern but also of variations thereof.
  • At least one electrical connection reversal device is interposed between the source of movement of the patterning element and the pile loop height control mechanism.
  • the patterning element may be driven electrically by the use of synchros from a rotary spindle adapted to drive the tufting needles.
  • synchros from a rotary spindle adapted to drive the tufting needles.
  • This reversal may be initiated by a signal derived at the end of the pattern, so that on reversal, following one patterning phase in the forward direction, there is another patterning phase in the reverse direction giving what may be termed a longitudinally-reversed pattern repeat in the tufted work.
  • the electrical connection reversal devices may be in the form of relays or transistor circuits or thermionic valves; any suitable circuit giving a substantially instantaneous switchover may be used.
  • any suitable circuit giving a substantially instantaneous switchover may be used.
  • it may be advantageous to programme the form of each of a sequence of repeats, and a stepping switch or uniselector may be used for this purpose or a punched card reading system.
  • the first phase may be normal pattern, the second longitudinally-reversed pattern, the third colourreversed pattern and the fourth colour-reversed and longitudinally-reversed pattern.
  • FIGURE 1 is part of a circuit of the pattern control mechanism
  • FIGURE 2 shows a further part of this circuit associated with the machine
  • FIGURE 3 shows one form of pattern selecting circuit.
  • a control box 1 having a circuit of which one form is shown in FIGURE 3.
  • the machine itself comprises forwarding rollers 24, 25 (FIG. 2) engaging a strip of backing material 29 and forwarding it to the needles at a predetermined rate. These rollers are driven from the main motor of the machine, and one roller drives a synchro-generator 26.
  • the machine also comprises a plurality of pneumatic cylinders of which one is shown at 21, each cylinder having a control valve 20 operated by a solenoid 19.
  • Each cylinder has a brake shoe 22 engaging one or more yarns 30, the pressure of the brake shoe on the yarn determining the length of loop formed during each stitch of the needle through which the yarn 30 passes.
  • a synchro-generator 26 is supplied with alternating current from leads 27, and it is connected by a reversing relay 16 to a synchro-motor 15 driving a pattern drum 14 at a rate determined by the generator 26.
  • the pattern drum is associated with a plurality of photocell .pick-up devices of which one is shown at 13, this photo-cell having an individual amplifier 2.
  • the amplifier is supplied with power from leads 28, and controls the solenoid 19 over lead 18 so as to provide long or short loops as determined by the pattern drum.
  • the amplifier 2 has also a reversing connection 11 which is connected in common via the leads 12 to the other amplifiers, the lead 11 determining whether a lightspot on the pattern produces a long loop or a short loop.
  • the control mechanism 1 is provided with indicating lamps 7 to 10 which show the condition of the pattern control at any time, and the type of pattern produced is determined by switches 3, 4, 5, any one of which may be closed to determine the type of pattern to be produced.
  • FIGURE 3 shows one form of circuit may be included in the control mechanism 1.
  • the circuit comprises a stepping switch S having contact banks S1, S2 and S3,
  • the switch S is energised over lead 28 from a pick-up device 31 (FIGURE 1) which is operated at a pre-determined position of the drum 14 relatively to the photo-cells, so that the switch is stepped for example once every revolution of the drum although the switch may be stepped at multiples of this rate of revolution if required.
  • Each of the contact banks has connections to one of the switches 3, 4, 5, bank S1 being connected to a relay CR, bank S2 to a relay PR and bank S3 to both of these relays.
  • closure of switch 5 operates relay CR on each alternate step of the switch S
  • relay PR is operated on the first four contacts of bank S2, and released for the last four, and both relays are operated if switch 3 is closed, on the last four contacts of bank S3.
  • These strappings on the contact banks may of course be varied to suit the type of pattern required, and more than one contact bank may be associated with each relay.
  • the switches 3, 4, may be brushes associated with a punched card, the card determining the kind of pattern to be produced.
  • Relay CR has a contact CR1 which over lead 11 reverses all the photo-cell outputs so that if for example CR1 is open, long loops are produced, and if closed, short loops are produced.
  • Relay PR has a contact PR1 which over lead 17 operates a pattern direction reversing relay 16 to reverse the direction of the synchro-motor 15. Both relays have contacts CH2 and PR2 connected respectively to leads 7, 8 and 9, 10, these leads lighting the similarly numbered lamps shown in FIGURE 1 to indicate the kind of pattern. Closure of switch 3 operates both relays CR and PR when the wiper of bank S3 is on any one of its last four contacts, this causing reversal of both the loop length controlling means and the pattern direction.
  • a pattern control device carrying indicia representing a pattern
  • second means responsive to said signal for controlling the height of said pile loops to produce loops having a first height during the occurrence of said first state and having a second height during the occurrence of said second state
  • a textile tufting machine for producing carpets and similar patterned fabrics comprising pile loops of yarn applied by a plurality of needles to a backing fabric
  • pattern means comprising an indicia-bearing drum; means for rotating said drum; means for sensing said indicia to provide a plurality of timevarying signals; feed roller means for advancing said backing fabric past said needles at a predetermined speed, the speed of said feed roller means being synchronized with the speed of rotation of said drum; and patternreversing means responsive to one of said time-varying signals for reversing the direction of rotation of said drum.
  • Apparatus according to claim 3 including control means responsive to said time-varying signals for controlling said strands of yarn to vary the height of pile loops being formed from said strands of yarn; and loop height-reversing means for reversing the effect of said time-varying signals on said control means to reverse the effect which a given condition of said signals has on the heights of said pile loops.
  • Apparatus according to claim 3 having a synchrogenerator connected to be driven in synchronism with said feed rollers and a synchro-motor connected to drive said drum, said synchro-generator being connected to drive said synchro-motor, thereby to synchronize the speed of said feed roller means with the speed of said drum.
  • Apparatus according to claim 3 having control means responsive to said time-varying signals for controlling said strands of yarn to vary the heights of said pile loops being formed from said strands of yarn; loop heightreversing means for reversing the effect of said timevarying signals upon the heights of said pile loops; and selective switching means operable through a plurality of conditions to control said pattern-reversing means and said loop height-reversing means selectively, both singly and in combination.
  • a textile tufting machine for producing carpets, patterned fabrics and the like, including first means for applying yarn in loops of controlled heights to a backing fabric and feed roller means for advancing said backing fabric past said first means, the combination of: a first pattern device having a first program stored thereon; second means synchronized with said feed roller means for deriving a first plurality of successive control signals from said first pattern device in accordance with said first stored program; a second pattern device having a second stored program; third means synchronized with said feed roller means for sensing said second program stored on said second pattern device at a speed synchronized with said feed roller means and in a selected sequence to derive a second plurality of successive control signals; fourth means for applying said successive control signals of said second plurality to control said first means; and fifth means responsive to certain of said control signals of said first plurality for controlling the application of said control signals of said second plurality thereby to control the execution of said second program.
  • said fifth means comprises means for controlling the direction in time in which said second stored program is sensed in order to control the time-direction of said selected sequence.
  • Apparatus according to claim 9 in which said first means is operative during a first condition of said fourth means to control said loops to first and second heights, respectively, upon the occurrence of first and second levels respectively, of said control signals of said second plurality, and operative during a second condition of said fourth means to control said loops to said second and first heights, upon the occurrence of said first and second levels of said control signals, respectively, of said second plurality, and in which said fifth means comprises means for 5 6 switching said fourth means between said first and second 3,103,187 9/ 1963 Hammel 11279 conditions. 3,272,163 9/1966 Erwin et a1. 11279 References Cited UNITED STATES PATENTS 5 US. Cl. X.R 2,855,879 10/1958 Manning Ill-79 D 3,016,029 1/1962 Card 112-'79.6 112 26625 219 HERBERT F. ROSS, Primary Examiner

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
  • Control Of Multiple Motors (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US508978A 1964-11-30 1965-11-22 Tufting machine pattern variation device Expired - Lifetime US3459143A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4854564 1964-11-30

Publications (1)

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US3459143A true US3459143A (en) 1969-08-05

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US508978A Expired - Lifetime US3459143A (en) 1964-11-30 1965-11-22 Tufting machine pattern variation device

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US (1) US3459143A (de)
BE (1) BE672824A (de)
DE (1) DE1485465C3 (de)
FR (1) FR1468950A (de)
GB (1) GB1050239A (de)
NL (1) NL6515306A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568614A (en) * 1967-09-26 1971-03-09 Stanley Shorrock Machine pattern for a textile tufting machine
US4267787A (en) * 1979-06-29 1981-05-19 Tsutomu Fukuda Control method for a tufting machine
US5588383A (en) * 1995-03-02 1996-12-31 Tapistron International, Inc. Apparatus and method for producing patterned tufted goods

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITPD20080011A1 (it) * 2008-01-11 2009-07-12 Mara Srl Macchina per cucire con nuovo dispositivo di affrancatura

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855879A (en) * 1956-03-23 1958-10-14 West Point Mfg Co Tufting machine
US3016029A (en) * 1957-08-23 1962-01-09 Singer Cobble Inc Multiple needle skip-stitch machine
US3103187A (en) * 1961-05-29 1963-09-10 Singer Cobble Inc Photocell controlled pattern attachment for tufting machines
US3272163A (en) * 1964-05-06 1966-09-13 Singer Co Pattern control for tufting machine attachments

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2855879A (en) * 1956-03-23 1958-10-14 West Point Mfg Co Tufting machine
US3016029A (en) * 1957-08-23 1962-01-09 Singer Cobble Inc Multiple needle skip-stitch machine
US3103187A (en) * 1961-05-29 1963-09-10 Singer Cobble Inc Photocell controlled pattern attachment for tufting machines
US3272163A (en) * 1964-05-06 1966-09-13 Singer Co Pattern control for tufting machine attachments

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3568614A (en) * 1967-09-26 1971-03-09 Stanley Shorrock Machine pattern for a textile tufting machine
US4267787A (en) * 1979-06-29 1981-05-19 Tsutomu Fukuda Control method for a tufting machine
US5588383A (en) * 1995-03-02 1996-12-31 Tapistron International, Inc. Apparatus and method for producing patterned tufted goods

Also Published As

Publication number Publication date
DE1485465A1 (de) 1969-07-17
BE672824A (de)
FR1468950A (fr) 1967-02-10
NL6515306A (de) 1966-05-31
DE1485465B2 (de) 1975-04-17
GB1050239A (de)
DE1485465C3 (de) 1975-12-18

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