US3851676A - Weft thread inserting device for shuttleless looms - Google Patents

Weft thread inserting device for shuttleless looms Download PDF

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Publication number
US3851676A
US3851676A US00360430A US36043073A US3851676A US 3851676 A US3851676 A US 3851676A US 00360430 A US00360430 A US 00360430A US 36043073 A US36043073 A US 36043073A US 3851676 A US3851676 A US 3851676A
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US
United States
Prior art keywords
weft thread
gripper
counter bearing
inserting device
clamping
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 - Lifetime
Application number
US00360430A
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English (en)
Inventor
N Kokkinis
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.)
Lindauer Dornier GmbH
Original Assignee
Lindauer Dornier GmbH
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
Priority claimed from DE19722240009 external-priority patent/DE2240009C3/de
Application filed by Lindauer Dornier GmbH filed Critical Lindauer Dornier GmbH
Application granted granted Critical
Publication of US3851676A publication Critical patent/US3851676A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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

  • This invention relates to an improvement in a weft thread inserting device for shuttleless looms comprising gripper rods which move in a reciprocating fashion and laterally engage into the shed, and wherein grip-i per heads positioned at the forward end of the gripper rods are equipped with clamping means for the weft thread comprising a movable clamping part and a stationary counter bearing, the improvement comprising a soft elastic base means mounted at the counter bearing, and a wear resistant top means floatingly positioned thereon.
  • the present invention relates to a weft thread inserting device for shuttleless looms comprising a pair of gripper rods which move in a reciprocating fashion and laterally engage into the shed, the gripper heads being provided with clamping means for the weft thread.
  • the weft thread is received on one side outside of the loom by the gripper head of one of the gripper rods, drawn into the shed, and transferred approximately in the center of the shed to the gripper head of the other gripper rod. During the return movement of the gripper rods, the weft thread is thereafter completely pulled through the shed, and finally released once more on the other side of the machine.
  • clamping means are provided for purposes of gripping and releasing the tuatable from the outside by means of control levers coupled to the main drive gear of the loom.
  • the clamping means consists of a two-armed clamping lever and a plate being disposed laterally at the gripper head as a counter bearing ,for one of the arms of the clamping lever provided as a clamping part.
  • the aforementioned control levers will come to be positioned upon the other arm of the clamping lever.
  • the control levers engage from the outside through the warp threads of the shed.
  • the clamping lever is moved, during its actuation, parallel to the wall of the gripper head.
  • the clamping part itself is shaped prismatically and therefore constitutes a kind of knife edge which, in the position of rest thereof, is placed against a counter piece in the form of a prismatic bed.
  • This prismatic bed is disposed in a lateral plate at the gripper head wall.
  • V weft thread and these clamping means are forcibly accounter bearing is a soft-elastic base or bed with a wear resistant top or upper part that is floatingly positioned thereon.
  • the counter bearing is preferably provided as a plate which is equipped with two lateral spacer means and is disposed laterally at the gripper head.
  • One of the spacer means of this plate extends in a rectilinear fashion at least at the 'part thereof facing the movable clamping part, and is enclosed with a ring-shaped softelastic base.
  • the top or upper part is shaped in the manner of a clamp or clasp and is inserted between the two' spacer means in a manner such as to be secured against falling out.
  • FIG. 1 illustrates a gripper head with a closed clamping device
  • FIG. 2a illustrates the plate serving as counter bearing in a side view thereof
  • FIG. 2b illustrates the plate serving as counter hearing in a top plan view thereof
  • FIG. 20 illustrates the plate serving as counter bearing in a cross-sectional view thereof
  • FIG. 3 illustrates the top part
  • FIG. 1 Apparent from FIG. 1 is the disposition or provision of the clamping device at the gripper head.
  • the gripper head inself has been identified with reference numeral 1.
  • Pivotally positioned thereon is a two-armed clamping lever 2.
  • the pivot axis has been identified with reference numeral 3.
  • the two-armed clamping lever 2 is provided at the forward end thereof as a clamping part 2a for the weft thread.
  • a leaf-type or flat spring 4 under the arm 2b of the control lever brings about the closing of the clamping device.
  • Disposed at the tip of the gripper head 1 in such a manner as to be laterally removable is a plate 5. Apparent from this figure are also two fastening holes for the plate 5.
  • the construction or design of the plate 5 is illustrated in further detail in the various views of FlGS. 2a to 20.
  • the plate 5 is equipped with two spacer means 5 and It is the object of the present invention to afford a simplification in this respect and, by using the advantages of an elastic counter-piece for the clamping part, to provide a solution which does not have the disadvantages and drawbacks referred to hereinabove, and which clamping part is, in other words, resistant to 'wear and tear so that the frequency change thereof is no longer necessary.
  • Theh plate 5 has holes 7 and 8 in order that it can be secured to the gripper head 1.
  • the plate 5 has a projection 6 pointing upwardly and forming, with the lateral wall of the gripper head 1, a gap into which one arm of the clamping lever engages, namely the clamping part ZaJThis gap has been shown in FIG. 2c.
  • the clamping part 2a has been omitted from this figure for purposes of greater clarity of illustration.
  • the spacer means 5' is so provided that it extends in a rectilinear manner at the portion thereof facing the clamping part 2a.
  • a ringshaped soft-elastic base 9 is placed around the spacer means 5'. Placed in a floating manner upon this base 9 in the gap between the wall'of the gripper head 1 and the projection 6 of the plate 5 is a top part 1th of a wear resistant material.
  • the most diversified materials may be used for the top part 10, which may consist for example of the material known under the name of Widia, or also of a ceramic material.
  • a nose 1th of the support part engages in the interstice between the two spacer means 5' and 5" so that the top part engages the spacer means 5' approximatelyv in a clamp-like or clasp-like fashion and is secured against falling out because of the elasticity thereof. Since the top part 10 is positioned in the gap between the wall of the gripper head and the projection 6 of the plate 5, it also laterally secured against falling out.
  • the top part 10 has been illustrated separately. As is apparent from this figure, it extends in a straight-lined fashion on the upper side thereof so that the clamping part 2 is adapted to be positioned, or rest, flush thereon.
  • the top part By virtue of the construction of the top part as shown, it is possible during the manufacture to insert the part in a very simple manner in its place where it is held by reason of its shape and because of the elasticity of the soft-elastic base. If needed, however, an exchange, or a removal of the top part is readily possible.
  • a weft thread inserting device for shuttleless looms comprising gripper rods which move in a reciprocating fashion and laterally engage into the shed, and wherein gripper heads positioned at the forward end of the gripper rods are equipped with clamping means for the weft thread comprising a movable clamping part and a stationary counter bearing,
  • a weft thread inserting device in which the counter bearing plate mounted laterally at the gripper head and equipped with lateral spacer means, one of the spacer means of said plate extending in a straight-line fashion at least at the portion thereof facing the movable clamping part, and a ring-shaped soft-elastic base surrounding said spacer means, said top means being constructed in a clamp-like manner and inserted between said spacer means so as to be secure against falling out.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US00360430A 1972-08-14 1973-05-15 Weft thread inserting device for shuttleless looms Expired - Lifetime US3851676A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722240009 DE2240009C3 (de) 1972-08-14 Greiferkopf für Webmaschinen mit gegenläufig angetriebenen Greiferstangen

Publications (1)

Publication Number Publication Date
US3851676A true US3851676A (en) 1974-12-03

Family

ID=5853563

Family Applications (1)

Application Number Title Priority Date Filing Date
US00360430A Expired - Lifetime US3851676A (en) 1972-08-14 1973-05-15 Weft thread inserting device for shuttleless looms

Country Status (7)

Country Link
US (1) US3851676A (fr)
JP (1) JPS5142229B2 (fr)
BE (1) BE798958A (fr)
CH (1) CH556930A (fr)
FR (1) FR2196411B1 (fr)
GB (1) GB1382949A (fr)
IT (1) IT990042B (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998251A (en) * 1975-04-17 1976-12-21 Lindauer Dornier Gasellschaft Mbh Clamping device at gripper heads for shuttleless looms
US4467841A (en) * 1980-09-02 1984-08-28 Aktiengesellschaft Adolf Saurer Clamping jaw arrangement of a thread clamp for textile yarns or the like
DE3923540A1 (de) * 1989-07-15 1991-01-24 Dornier Gmbh Lindauer Greiferkopf fuer webmaschinen
US5007463A (en) * 1988-08-19 1991-04-16 Nuovopignone-Industrie Meccaniche E Fonderia, S.P.A. Weft clamping system for inserter rapier
US20030217781A1 (en) * 2002-05-21 2003-11-27 Koen Bruynoghe Gripper for an axminster gripper weaving machine
US20050257849A1 (en) * 2004-05-19 2005-11-24 Dominique Maes Pneumatically controllable weft thread clamp for a weaving machine

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5148456U (fr) * 1974-10-07 1976-04-12
EP2063008A1 (fr) 2007-11-22 2009-05-27 Textilma Ag Dispositif d'accroche pour l'introduction d'un fil de trame d'une machine à tisser à pince
EP2388361A1 (fr) 2010-05-18 2011-11-23 Textilma AG Poignée et dispositif d'entrée de fils de trame pour un métier à tisser à pince

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269426A (en) * 1963-05-30 1966-08-30 Llado Jose Llado Weft braking and positioning device for shuttleless looms
US3633711A (en) * 1968-10-23 1972-01-11 Sulzer Ag Thread brake
US3662785A (en) * 1969-11-11 1972-05-16 Dornier Gmbh Lindauer Gripper head for use in a shuttleless loom

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES343664A1 (es) * 1967-07-13 1968-09-01 Balaguer Golobart Perfeccionamientos en los organos aprehensores de hilos de trama en los elementos insertadores.

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3269426A (en) * 1963-05-30 1966-08-30 Llado Jose Llado Weft braking and positioning device for shuttleless looms
US3633711A (en) * 1968-10-23 1972-01-11 Sulzer Ag Thread brake
US3662785A (en) * 1969-11-11 1972-05-16 Dornier Gmbh Lindauer Gripper head for use in a shuttleless loom

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3998251A (en) * 1975-04-17 1976-12-21 Lindauer Dornier Gasellschaft Mbh Clamping device at gripper heads for shuttleless looms
US4467841A (en) * 1980-09-02 1984-08-28 Aktiengesellschaft Adolf Saurer Clamping jaw arrangement of a thread clamp for textile yarns or the like
US5007463A (en) * 1988-08-19 1991-04-16 Nuovopignone-Industrie Meccaniche E Fonderia, S.P.A. Weft clamping system for inserter rapier
DE3923540A1 (de) * 1989-07-15 1991-01-24 Dornier Gmbh Lindauer Greiferkopf fuer webmaschinen
US20030217781A1 (en) * 2002-05-21 2003-11-27 Koen Bruynoghe Gripper for an axminster gripper weaving machine
US7077169B2 (en) * 2002-05-21 2006-07-18 N.V. Michel Van De Wiele Gripper for an Axminster gripper weaving machine
US20050257849A1 (en) * 2004-05-19 2005-11-24 Dominique Maes Pneumatically controllable weft thread clamp for a weaving machine
US7219702B2 (en) * 2004-05-19 2007-05-22 N.V. Michel Van De Wiele Pneumatically controllable weft thread clamp for a weaving machine

Also Published As

Publication number Publication date
BE798958A (fr) 1973-08-16
IT990042B (it) 1975-06-20
GB1382949A (en) 1975-02-05
CH556930A (de) 1974-12-13
FR2196411A1 (fr) 1974-03-15
DE2240009B2 (de) 1975-12-18
FR2196411B1 (fr) 1976-05-07
DE2240009A1 (de) 1974-02-28
JPS5142229B2 (fr) 1976-11-15
JPS4942961A (fr) 1974-04-23

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