US3519028A - Picking elements for filling yarns in looms with fixed weft reserve - Google Patents

Picking elements for filling yarns in looms with fixed weft reserve Download PDF

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Publication number
US3519028A
US3519028A US751134A US3519028DA US3519028A US 3519028 A US3519028 A US 3519028A US 751134 A US751134 A US 751134A US 3519028D A US3519028D A US 3519028DA US 3519028 A US3519028 A US 3519028A
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Prior art keywords
needle
yarns
fixed
flat
jaw
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Expired - Lifetime
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US751134A
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English (en)
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Ramon Balaguer Golobart
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Individual
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    • 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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/20—Constructional features of the thread-engaging device on the inserters
    • D03D47/23—Thread grippers

Definitions

  • the present invention refers to improvements in the picking elements for filling yarns in looms with fixed weft reserve, of the type which comprise means to grip the filling yarns and means to actuate said gripping means.
  • said sliding plate On the front surface of said sliding plate projects a rectilinear appendage which is inserted in a groove of the flattened point of the needle, and which unit acts as buttonhole or grommet to prevent the yarns, upon separation of the tWo front faces, one of the sliding plate and the other the front face of the flat point, for the release of the weft yarns, from coming off upwardly out of the recess of the flattened point of the needle.
  • the sliding plate is constantly under the pressure of a helicoidal counter spring, which maintains the flat face of said sliding plate against the internal front face of the flat point of the needle, and at its posterior extremity said plate is connected to the extremity of a rod, which in turn is joined, at its opposite extremity, to a swing lever member located at the posterior extremity of the needle, and next to said swing lever member is placed a clamping device.
  • the driving unit is actuated by a frog (buffer) to close the sliding plate against the flat point and by a two-step fixed cam for the separation in two phases of said sliding plate from the flattened point.
  • a frog buffer
  • a two-step fixed cam for the separation in two phases of said sliding plate from the flattened point.
  • FIG. 1 is a perspective view of the inserting element, in which the protection of the flattened point has been indicated in dotted lines for better visibility, the grasping and releasing means of the weft yarns being in open position.
  • FIG. 2 is a perspective view of the inserting element, in which also the protection of the flattened point has been indicated in dotted lines for better visibility, the grasping and releasing means of the weft yarns being in nearly closed position.
  • FIG. 3 is a perspective view of the flattened point of the inserting element, with its protector.
  • FIG. 4 is a plan detail of the driving device of the grasping and releasing means of the inserting element in the position corresponding to FIG. 2.
  • FIG. 5 is a perpective view showing a detail of the position of the weft yarns in the recess of the flattened point of the needle.
  • FIG. 6 is sectional lateral diagrammatic detail view of the flat point showing said point in clamping position of the weft yarns.
  • FIG. 7 is a sectional lateral diagrammatic detail view of the flat point showing said point in position for the sliding of the weft yarns.
  • FIG. 8 is a diagrammatic plan view of the inserting element slightly prior to the closing of the mouth for grasping the weft yarns.
  • FIG. 9 is a diagrammatic plan view of the inserting element slightly prior to the opening of the mouth for releasing the weft yarns.
  • numeral 1 indicates a weft inserting needle, the gripping head of which is formed with a horizontally disposed flat bottom, or bottom 24, having upstanding lateral wings 2 and 3.
  • the flat point 8 is formed by the upwardly turned end of the flat bottom of the gripping head, while the forward end 2a of wing 2 is cut away in a downwardly rearwardly extending direction to provide the inlet 4 for the weft yarns 6 and 7 (FIG. 5).
  • the wing 3 is also cut away at 3a to provide a rearwardly upwardly sloping portion forming the inlet 5 for the yarns.
  • the flat point acts as a fixed jaw of a mouth and is formed with a flat vertical internal face 9 and a longitudinally extending rectilinear groove 10 (FIGS. 1, 2, 5, 6 and 7) for the insertion of a rectilinear finger 11 which is integral with the front side 12 of a sliding plate 13.
  • This plate may comprise a horizontal flat portion having downwardly extending wings 13a which are slidable on the bottom of the gripping head inside the wings 2 and 3 and thus forms the movable jaw of a front closing mouth, thanks to a small vertical flat plate 14 which is integral with the front face 12.
  • Said sliding plate 13 is joined at its rear portion 15 to the extremity 16 of a rod 17, which extends from end to end of the needle 1.
  • the other extremity 18 of said rod 17 is connected to the projection 19 of a swing lever member 20, pivoted at point 21 to the rear end 22 of needle 1, FIGS. 1, 2 and 4.
  • a helicoidal counterspring 25 which surrounds rod 17 in this area (FIGS. 1 and 2) which rod projects loosely through a horizontal opening in the buffer, and which tends to always maintain contact between the small flat plate 14 of the sliding plate 13, (or movable jaw), against the internal flat face 9 of the flattened point 8, (or fixed jaw), of needle 1.
  • a support 26 attached to the base 24 next to the Wing 2 to support a pawl 27 on a pivot 27a, said pawl having two extremities 28 and 29 (FIGS. 1, 2 and 4), extremity 28 being used to actuate the driving means and the other extremity 29 to engage or hook with a projecting plate 30 of the swing lever 20.
  • the end 31 of a helicoidal spring 32 rests on the forward side of extremity 29 of pawl 27, while its other end 33 rest on the base 24 of the needle 1.
  • a journal or pin 34 which is used to affix it firmly to a device transmitting a rectilinear reciprocating motion (not shown).
  • a protector 45 which comprises a plate having a horizontal flat top and downwardly extending side wings 45a which fit between the wings of the needle and the sliding plate 13 (FIG.3) affixed by means of screw 46 in wing 3 and by means of screw 47 in wing 2 (FIG. 1) to prevent any damage to the warp yarns upon its passage through the shed 35.
  • Improvements in the gripping head of a weft inserting needle for looms having a fixed weft supply comprising a base, a fixed transverse jaw at the forward end of the gripping head, a longitudinally movable transverse jaw on the base positioned rearwardly of the fixed aw, said jaws when open providing with said base a transverse passage for a weft yarn, said movable jaw including a forwardly projecting finger spaced above the base of said needle for loosely retaining a moving weft yarn in said passage when the movable jaw is moved in one directron to a first open position, said jaw being movable in said one direction to a further open position to retract the finger beyond said passage for insertion of a yarn and movable in the opposite direction into abutting engagement with the fixed jaw to close the jaws, latch means on the shuttle including means for holding the jaws closed and for moving the movable jaw, and tripping means coacting with said latch means for closing the jaw to pick up a weft
  • said base is provided with a pair of spaced side wings having aligned openings defining said transverse passage
  • said movable jaw including a plate slidable between the wings, spring means for urging the jaws closed
  • said latching means includes a pivotally mounted lever, means connecting said lever with the movable jaw and pawl means engageable with said lever for holding said jaw in said further open position.
  • said latch means includes a lever pivotally mounted on said base rearwardly of the jaws, a rod connecting said movable jaw with said lever, and said means for holding the jaws closed includes a helicoidal spring surroundnig said rod, one end of the spring being fixed to the base, the other end abutting against the movable jaw.
  • said latch means includes a lever pivotally mounted on the base and pawl means engageable with said lever to hold the movable jaw in said further open position and disengageable to permit the closing of said jaw
  • said tripping means includes means on a loom engageable with said lever to open the movable jaw and engageable with the pawl means for said disengagement of the pawl means.
  • said lever includes a projecting portion
  • said tripping means includes a cam mounted on a loom, said cam having a first portion engageable with said projecting portion of the lever during a portion of the movement of the needle toward said other side of a loom for releasing a yarn, said cam having another portion engageable with said projecting portion of the lever for moving the jaw into said further open position during further movement of the needle for engaging the pawl means with the lever.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US751134A 1967-08-10 1968-08-08 Picking elements for filling yarns in looms with fixed weft reserve Expired - Lifetime US3519028A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ES344309A ES344309A1 (es) 1967-08-10 1967-08-10 Perfeccionamientos en los elementos insertadores de hilos de trama en telares con reserva de trama fija.

Publications (1)

Publication Number Publication Date
US3519028A true US3519028A (en) 1970-07-07

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ID=8445957

Family Applications (1)

Application Number Title Priority Date Filing Date
US751134A Expired - Lifetime US3519028A (en) 1967-08-10 1968-08-08 Picking elements for filling yarns in looms with fixed weft reserve

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US (1) US3519028A (de)
CH (1) CH485051A (de)
DE (1) DE1760959A1 (de)
ES (1) ES344309A1 (de)
FR (1) FR1574625A (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371008A (en) * 1979-09-05 1983-02-01 Ruti Machinery Works Ltd. Gripper head for looms working with removal of the filling thread from stationary bobbins
US4702284A (en) * 1985-07-11 1987-10-27 Lindauer Dornier Gesellschaft Mbh Method and apparatus for inserting weft threads into the loom shed of shuttleless looms
US5065797A (en) * 1989-07-15 1991-11-19 Lindauer Dornier Gesellschaft M.B.H. Gripper head for shuttleless looms
US6065506A (en) * 1997-07-29 2000-05-23 Gividi-Italia S.P.A. Rapier loom thread gripper with elastic tongue

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1200429B (de) * 1962-07-07 1965-09-09 Bosch Gmbh Robert Elektrische Maschine mit Schleifbuersten, insbesondere Gleichstrom-Kleinmotor
DE1181307B (de) * 1962-10-23 1964-11-12 Bosch Gmbh Robert Elektrische Maschine, insbesondere Gleichstromerzeuger fuer Kraftfahrzeuge
EP0025152B1 (de) * 1979-08-31 1983-08-24 Black & Decker Inc. Bürstenanordnung und Vorrichtung zur Montage für ein tragbares Werkzeug
DE3877661T2 (de) * 1987-08-31 1993-06-09 Mitsubishi Electric Corp Elektrischer anlasser.
DE4320005C5 (de) * 1993-06-17 2008-03-27 Continental Teves Ag & Co. Ohg Elektrische Maschine zur Wandlung von elektrischer und mechanischer Energie, insbesondere radialkraftbeaufschlagter Elektromotor zum Antrieb von Pumpen
IT1303764B1 (it) * 1998-11-17 2001-02-23 S M I T S R L Societa Macchine Pinza di condotti per telai senza navetta particolarmente adatta perl'introduzione contemporanea di piu' trame nella bocca di ordito

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960118A (en) * 1955-08-29 1960-11-15 Ancet Victor Marie Joseph Shuttleless weaving looms
US3288173A (en) * 1963-09-19 1966-11-29 Golobart Ramon Balaguer Device for the clamping and pulling of weft yarns
US3384126A (en) * 1964-12-09 1968-05-21 Golobart Ramon Balaguer Weft thread inserting device in weaving machines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2960118A (en) * 1955-08-29 1960-11-15 Ancet Victor Marie Joseph Shuttleless weaving looms
US3288173A (en) * 1963-09-19 1966-11-29 Golobart Ramon Balaguer Device for the clamping and pulling of weft yarns
US3384126A (en) * 1964-12-09 1968-05-21 Golobart Ramon Balaguer Weft thread inserting device in weaving machines

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4371008A (en) * 1979-09-05 1983-02-01 Ruti Machinery Works Ltd. Gripper head for looms working with removal of the filling thread from stationary bobbins
US4702284A (en) * 1985-07-11 1987-10-27 Lindauer Dornier Gesellschaft Mbh Method and apparatus for inserting weft threads into the loom shed of shuttleless looms
US5065797A (en) * 1989-07-15 1991-11-19 Lindauer Dornier Gesellschaft M.B.H. Gripper head for shuttleless looms
US6065506A (en) * 1997-07-29 2000-05-23 Gividi-Italia S.P.A. Rapier loom thread gripper with elastic tongue

Also Published As

Publication number Publication date
FR1574625A (de) 1969-07-11
ES344309A1 (es) 1968-10-01
DE1760959A1 (de) 1971-12-30
CH485051A (de) 1970-01-31

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