US3282303A - Weft stop motions for shuttleless looms - Google Patents

Weft stop motions for shuttleless looms Download PDF

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Publication number
US3282303A
US3282303A US246264A US24626462A US3282303A US 3282303 A US3282303 A US 3282303A US 246264 A US246264 A US 246264A US 24626462 A US24626462 A US 24626462A US 3282303 A US3282303 A US 3282303A
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United States
Prior art keywords
weft
supply
rods
tension
loom
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Expired - Lifetime
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US246264A
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English (en)
Inventor
Ancet Victor Marie Joseph
Fayolle Marius
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BRELIC INTERNATIONAL Inc
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BRELIC INTERNATIONAL Inc
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D51/00—Driving, starting, or stopping arrangements; Automatic stop motions
    • D03D51/18—Automatic stop motions
    • D03D51/34—Weft stop motions
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Definitions

  • weft thread for a shuttleless loom is drawn from a weft supply package located adjacent the loom.
  • more than one supply package is present in order that weft patterning effects can be obtained, for example, 'by using differently colored wefts drawn in pre-determined sequence from the supply packages.
  • One method of obtaining weft patterning effects is to provide a weft supply rod adjacent the edge of the shed and arranging for the rod to oscillate thereby to displace an electric contact against the action of a spring when an increase in weft tension occurs due to the drawing of weft through the shedby a weft inserting needle.
  • Such an arrangement is disclosed in our French Patent No. 1,125,586 and in the corresponding U.S. Patent 2,977,996.
  • the arrangement disclosed serves as a detector and in the absence of the increased tension, due to breakage or complete lack of weft or marl-presentation of weft which causes it not to be delivered to the weft inserting needle, serves to stop the loom.
  • a system is also known and is the subject of our French Patent No. 1,132,916 in which weft from a series of supply packages can be supplied in predetermined sequence to the weft inserter from a series of supply rods all of which are aranged in the same vertical plane and all having a certain freedom of lateral movement.
  • Each of the supply rods are arranged to enable the electric contact to be actuated and thus a control to be exercised over the loom operation.
  • An object of the present invention is to eliminate the above mentioned disadvantage in what is otherwise a useful control device.
  • a weft stop motion for a shuttleless loom having a plurality of weft supplies in which a plurality of weft supply rods are provided, one for each weft, the rods each being arranged for rotational movement about their longitudinal axes whereby an electrical switch device common to all of the supply rods and associated therewith can be operated on increase of weft tension due to insertion of a pick thereby to ensure operation of the loom, failure of weft supply to a weft inserting needle and thus absence of an increase in tension serving to stop the loom.
  • FIG. 1 is a perspective view of part of a needleloom and a weft stop device in accordance with the invention
  • FIG. 3 is a part sectional plan view of FIG. 1 and FIG. 4 is a detail view of part of the device of FIG. 1.
  • the device consists of a series of rods 1 each provided with an extension 2 provided with an eyelet 3 at their free ends. Each weft 4 passes through an eyelet 3.
  • the extensions 2 are cranked at 5 intermediate their ends.
  • each rod 1 At the upper end of each rod 1 is a sleeve 11 within which the rods are freely rotatable.
  • the rods pass into a housing 6, within which the sleeves 11 are located, and are each connected by means of a cable 7a to a control member A.
  • the cables 7a are each contained within a sheath 7.
  • Screw threaded collars 8 are provided, one on each sheath 7, by means of which tension in the cables 7a can be adjusted.
  • the collars 8 are carried by a carrier 'bar 9.
  • a spring 10 encircles each cable 7a and extends between the end of the rod 1 and the bar 9.
  • the spring 10 serves to cause the cor-responding rod 1 to be lowered when tension in the cable 7a is released.
  • a lowered rod 1 is shown in FIG. 1.
  • Guide means for the rods 1 consist of a cross bar 12 through which each rod 1 passes and the base of the housing 6, the cross bar '12 and the base of the housing 6 being apertured to receive the rods 1.
  • the cross bar 12 also serves to limit the movement of the rods 1, the collars 11 abutting the rod 12 at the extent of movement of the rods 1.
  • Each rod 1 is provided with a radially extending arm 13 located in a slideway 14 formed in a plate 15 mounted adjacent the b-ase'of the housing 6.
  • the slideways :14 are increased in width at their lower ends as shown at 16.
  • Adjacent the plate 15 is a slidable bar 17 whose ends pass through flanges formed on the plate 15. Movement of the bar 17 is in a plane parallel to the plane of the plate 15.
  • One end of the bar '17 abuts a spring 18 which tends to push the other end 19 of the bar 17 against an electrical contact 20.
  • Slots 22 are provided in the bar 17 corresponding to the slideways 14 in the plate 15.
  • the housing 6 is grounded at 24, and the electrical contact 20 is insulated with respect to said housing.
  • Said electrical contact 20 is interposed in series, as in U.S. Patent 2,977,996, in the electrical circuit 25 containing a relay 26.
  • interposed in series in said circuit also as in U.S. Patent 2,977,996, is another switch 27 which is, however, rotary and comprises two sectors, one of which 28 is conductive while the other 29 is insulating.
  • Said rotary switch is driven in rotation by one of the members of the loom, in synchronism with the functioning of the latter, in such a manner that it closes the circuit between the terminals 30 for the time during which a pick for a weft thread is introduced, whereas it opens the same when the thread is inoperative and at rest.
  • the electrical circuit 20 is fed via a transformer 31 from the general distributing main, and it controls a makeand-break switch 32 which controls the motor 3-3 that insures the drive of the loom.
  • the bar 17 In the inoperative .position the bar 17 will normally be positioned with its end -19 in abutment with the contact 20.
  • a weft 4 When a rod 1 is lowered by release of tension in the cable 7a and extension of spring 10 a weft 4 will be positioned to be picked up by a weft inserting needle 23. As the needle 23 draws the weft 4 through the shed its tension will increase and cause the rod 1 to rotate about its longitudinal axis thus rotating the arm 13 in the Wide-r part 16 of the slideway 14. This serves to move the bar 17 against the spring "18 thus breaking the electrical contact at 20 and enabling weaving to proceed.
  • FIG. 3 illustrates the conditions in which the contact 29 is open.
  • the rods 1 are arranged to rotate through an angle of approximately 45.
  • the springs need only be very light, since they do not directly affect the actual control of the loom and thus the device is sensitive.
  • each rod 1 is control-led in identical manner to that above described.
  • the device is sensitive to change in tension of each individual weft and not to the combined tension of all the wefts.
  • a Weft stop motion device for a shuttleless loom arranged to operate using Weft thread from a plurality of weft supplies, said stop motion device including a plurality of rotatable weft supply rods, one for each weft supply, an electrical switching device common to all of said supply rods, means for operating said switching device by rotation of said supply rods about their longitudinal axes, said weft threads causing said rotation upon increase of tension therein during insertion of a pick, said stop motion device being arranged to stop said shuttleless loom in the absence of an increase in weft tension due to non-operation of said electrical switching device.
  • a weft stop motion device for a shuttleless loom arranged to operate using weft thread from a plurality of weft supplies, a weft inserting needle on said loom arranged to receive weft thread from said supplies in a predetermined sequence to enable weft patterning effects to be achieved, said stop motion device including a plurality of cranked rotatable weft supply rods, one for each weft supply, an electrical switching device common to all of said supply rods, means for moving said supply rods in a direction perpendicular to the direction of movement of said weft inserting needle, means for operating said switching device by rotation of said supply rods about their longitudinal axes, said weft threads causing said rotation up-on increase of tension therein during insertion of a pick, said stop motion device being arranged to stop said shuttleless loom in the absence of an increase in weft tension due to non-operation of said electrical switching device.
  • a weft stop motion device for a shuttleless loom arranged to operate using a Weft thread from a plurality of weft supplies, a weft inserting needle on said loom arranged to receive weft thread from said supplies in a predetermined sequence to enable weft patterning effects to be achieved, said stop motion device including a housing, a plurality of cranked rotatable weft supply rods, one for each weft supply, located partially Within said housing, support and guide means for said rods in said housing, cable connecting means on said supply rods whereby cables attached to said connecting means may be operated to enable said weft patterning effects to be achieved, resilient means associated with said supply rods and said cables for moving said supply rods in a direction substantially perpendicular to the direction of movement of said weft inserting needle, means for operating said switching device by rotation of said supply rods about their longitudinal axes, said weft threads causing said rotation upon increase of tension therein during insertion of a pick, said stop motion device being arranged
  • a weft stop motion device for a shuttleless loom arranged to operate using a weft thread from a plurality of weft supplies, a weft inserting needle on said loom arranged to receive weft thread from said supplies in a predetermined sequence to enable Weft patterning effects to be achieved, said stop motion device including a housing, a plurality of cranked rotatable weft supply rods, one for each weft supply, located partially within said housing, a radially extending arm attached to each of said supply rods, a plate located adjacent said supply rods and provided with a slideway for each of said radially extending arms, .an extended width portion in each said slideway to enable said radially extending arms to move in an arc during rotation of said supply rods about their longitudinal axes, a slidable bar adjacent said plate, said bar being provided with slots arranged to receive said radially extending arms, a resilient device loading said bar and against which the bar may be moved during rotation of said supply rods

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US246264A 1962-01-03 1962-12-20 Weft stop motions for shuttleless looms Expired - Lifetime US3282303A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR42162A FR1309084A (fr) 1962-01-03 1962-01-03 Perfectionnements aux mécanismes de contrôle du fil de trame et casse-trame de métier à tisser sans navettes

Publications (1)

Publication Number Publication Date
US3282303A true US3282303A (en) 1966-11-01

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ID=9694303

Family Applications (1)

Application Number Title Priority Date Filing Date
US246264A Expired - Lifetime US3282303A (en) 1962-01-03 1962-12-20 Weft stop motions for shuttleless looms

Country Status (5)

Country Link
US (1) US3282303A (fr)
CH (1) CH407902A (fr)
ES (1) ES283321A1 (fr)
FR (1) FR1309084A (fr)
GB (1) GB987307A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500876A (en) * 1967-05-26 1970-03-17 Ramon Balaguer Golobart Universal weft stop motion
US3528460A (en) * 1969-02-28 1970-09-15 Wendell Mills Inc Detecting means for weft selecting means
EP0333302A1 (fr) * 1988-03-16 1989-09-20 Picanol N.V. Machine à tisser à alimentation de fil de trame modifiée

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1369419A (fr) * 1963-06-13 1964-08-14 Perfectionnements aux appareils sélecteurs de trame à dispositif casse-fil pour métiers à tisser sans navette
US3276482A (en) * 1963-04-10 1966-10-04 Jean Gusken Maschinenfabrik Ei Web thread changing device for web-loom
ES291994A1 (es) * 1963-09-19 1963-11-16 Balaguer Golobart Ramen Mecanismo controlador de la trama
DE1535300B2 (de) * 1963-09-25 1972-01-13 Brelic International Inc., Panama Elektrisch arbeitender Schußfadenwächter für schützenlose Webmaschinen mit einer Schußfadenwechselvorrichtung

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1943012A (en) * 1929-10-28 1934-01-09 Gabler Johann Weft-shoot-changing device for gripper looms
GB443251A (en) * 1935-09-18 1936-02-25 William Walker Improvements in and relating to weft selecting apparatus for looms for weaving
US2202323A (en) * 1938-10-14 1940-05-28 Woodruff T Sullivan Weft tension and loom stopping device
US2429394A (en) * 1945-09-14 1947-10-21 Mohawk Carpet Mills Inc Needle motion
US3092150A (en) * 1959-06-02 1963-06-04 Dewas Raymond Weaving method and loom
US3129902A (en) * 1961-03-22 1964-04-21 Alsacienne Constr Meca Thread feed control device for textile machinery
US3158182A (en) * 1961-09-08 1964-11-24 Dewas Raymond Device for controlling the weft in continuous-feed weaving machines

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1943012A (en) * 1929-10-28 1934-01-09 Gabler Johann Weft-shoot-changing device for gripper looms
GB443251A (en) * 1935-09-18 1936-02-25 William Walker Improvements in and relating to weft selecting apparatus for looms for weaving
US2202323A (en) * 1938-10-14 1940-05-28 Woodruff T Sullivan Weft tension and loom stopping device
US2429394A (en) * 1945-09-14 1947-10-21 Mohawk Carpet Mills Inc Needle motion
US3092150A (en) * 1959-06-02 1963-06-04 Dewas Raymond Weaving method and loom
US3129902A (en) * 1961-03-22 1964-04-21 Alsacienne Constr Meca Thread feed control device for textile machinery
US3158182A (en) * 1961-09-08 1964-11-24 Dewas Raymond Device for controlling the weft in continuous-feed weaving machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3500876A (en) * 1967-05-26 1970-03-17 Ramon Balaguer Golobart Universal weft stop motion
US3528460A (en) * 1969-02-28 1970-09-15 Wendell Mills Inc Detecting means for weft selecting means
EP0333302A1 (fr) * 1988-03-16 1989-09-20 Picanol N.V. Machine à tisser à alimentation de fil de trame modifiée
BE1001513A3 (nl) * 1988-03-16 1989-11-14 Picanol Nv Weefmachine, met een verbeterde voeding voor de inslagdraden.
US4924917A (en) * 1988-03-16 1990-05-15 Picanol N.V. Weft thread break monitor and movement limiting device

Also Published As

Publication number Publication date
GB987307A (en) 1965-03-24
ES283321A1 (es) 1963-03-01
CH407902A (fr) 1966-02-15
FR1309084A (fr) 1962-11-09

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