US3242949A - Device for forming a leno weave - Google Patents

Device for forming a leno weave Download PDF

Info

Publication number
US3242949A
US3242949A US393155A US39315564A US3242949A US 3242949 A US3242949 A US 3242949A US 393155 A US393155 A US 393155A US 39315564 A US39315564 A US 39315564A US 3242949 A US3242949 A US 3242949A
Authority
US
United States
Prior art keywords
thread
thread guide
pair
heald frame
end positions
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
US393155A
Other languages
English (en)
Inventor
Taticek Lubomir
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.)
Elitex Sdruzeni Podniku Textilniho Strojirenstvi
Elitex Zavody Textilniho
Original Assignee
Elitex Zavody Textilniho
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
Application filed by Elitex Zavody Textilniho filed Critical Elitex Zavody Textilniho
Application granted granted Critical
Publication of US3242949A publication Critical patent/US3242949A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C7/00—Leno or similar shedding mechanisms
    • 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
    • D03D47/40—Forming selvedges

Definitions

  • the present invention relates to a device for forming a leno weave, particularly for forming fabric selvages of at least three warp threads.
  • one of the three warp threads forms one part of the shed of a leno warp weave, and the two other Warp threads form the second part of the shed, and cross each other after each second pick.
  • a system of at least three warp threads is used for the leno weave, at least one of the warp threads being a binding thread forming one part of the shed of a leno weave, whereas the other two threads form the second part of the shed, while crossing each other.
  • One embodiment of a device comprises a first thread guide means on a first heald frame, a pair of second thread guide means on the second heald frame, actuating means mounted on the first heald frame; and control means on the second heald frame and being operated by the actuating means during opposite reciprocating strokes of the heald frame to move the sec-0nd thread guide means between end positions located on opposite sides of the path of movement of the first thread guide means with the first heald frame.
  • leno warp sheds are formed of the first warp thread guided by the first thread guide means, and of the pair of second warp threads guided by the pair of second thread guide means.
  • the actuating means is resilient and includes a spring and a rod having an engaging portion adapted to engage corresponding recesses in a tiltable element of'the control means for turning the same between end positions in which the two second thread guide means are alternately shifted in' reciprocating strokes between opposite end positions.
  • the power for shifting the three thread guides is exclusively derived from the reciprocating motion of the heald frames.
  • FIG. 1 represents a side-view section of the device, partly in section
  • FIG. 2 a front elevation view of the device in the first wo-rk phase, during the swinging movement of the tilting element to the left,
  • FIG. 3 a front elevation view of the device in its second work phase, during the change of the shed
  • FIG. 4 a front elevation view of the device in its third work phase, during the swinging movement of the tilting element to the right,
  • FIG. 5 a diagrammatical view of the leno weave
  • FIGS. 6-8 the individual work phases during forming of the leno weave by means of three threads.
  • Frame 1 supports a first thread guide means in the form of a needle 3 having a guiding eye 4, and an actuating means including a tie rod 7 suspended between a pair of tension springs 5 and 6 which bias the actuating means 5, 6, 7 to assume a straight position shown in FIG. 3.
  • Rod 7 has a projecting portion or nose 8.
  • Spring 5, which engages a hook 9 of rod 7, is guided in a cylindrical tube 10 which holds spring 5 in a vertical position, while spring 6 can be angularly displaced to permit rod 7 to assume the angular positions shown in FIGS. 2 and 4 in which the nose 8 is displaced transversely from the position shown in FIG. 3.
  • a holder 11 is secured to a bar 2a of heald frame 2 and carries a journal pin 12 on which a control element 13 is mounted for tilting movement between two end positions shown in FIGS. 2 and 4.
  • the tilting element 13 has in a plane of symmetry passing through the axis of journal 12, a pointed tip 14, and on opposite sides of tip 14, a pair of recesses bounded by noses 15 and 16 which are arranged symmetrically with respect to tip 14.
  • a pair of second thread guides 20 and 23 having thread eyes 21, 24 are mounted in a straight horizontal groove 25 in holder 11 and are reciprocable in opposite directions between two end positions shown in FIGS. 2 and 4.
  • Pins 17 and 18 are respectively located in a recess 19 of the upper second thread guide 20, and in recess 22 of the lower second thread guide 23.
  • journal 12 When element 13 is angularly displaced on journal 12 between the two end positions, thread guides 20 and 23 are shifted in opposite directions between two end positions which are determined by abutment of journal 12 on the Walls of recesses 26 and 27 through which journal 12 passes, as best seen in FIG. 4.
  • the binding leno warp thread 28 is guided in the eye 4 of guide needle 3, while eye 21 of the upper thread guide 20 guides the leno warp thread 29, and eye 24 of the lower thread guide 23 guides the leno warp thread 30.
  • leno warpthreads 28, 30 bind the ends of weft thread 31, and the binding warp thread 28 alone constitutes always one part of the shed, While the two crossing warp threads 29 and 3t) constitute the other part of the shed.
  • the warp threads exert a certain tension on the thread guides 20 and 23, urging the tiltable element 13 to turn about journal 12, but the friction of thread guide 20, 23 in groove 25, and of pins 17, 18 in recesses 19 and 20 prevents turning of element 13 by the warp threads 29, 30.
  • the described device is arranged in the same way on both sides of the shafts 1 and 2, i.e. on both fabric edges.
  • On frame 1 more needles 3 for guiding binding threads 28 can be mounted and every thread guide 20 and 23 can be provided with more than one guiding eye 21, or 24, respectively.
  • the device according to the present invention works as follows:
  • the original position of the device is the one shown in FIGS. 1 and 2, i.e. the position, in which frame 1 is in the upper position and frame 2 in the lower one.
  • the upper thread guide 20 is in its extreme right position
  • thread guide 23 is in its extreme left position
  • the thread position in FIG. 6 corresponding to said positions in the perspective front view.
  • the buffer nose 8 of tie rod 7 with the extension spring 6 is moved by the action of tip 14 of tilting element 13 to the left.
  • the weft thread 31 is always inserted, when frames 1 or 2 are in the extreme upper positions.
  • frame 1 After the insertion of the weft, frame 1 begins again to move upwards, and frame 2 downwards, whereby nose 8 of tie rod 7 runs on to the right inclined wall of tip 14 of the tilting element 13 and catches its right side nose 16, causing thereby a turning movement of the tilting element 13 around pivot 12 in the anticlockwise direction, said movement causing by pins 17 and 18 a displacement of the upper thread guide 20 from the extreme right position into the extreme left one, whereas the lower thread guide 23 is moved from the extreme left position to the extreme right position, shown in FIG. 4.
  • this displacement of thread guides 20 and 23 crossing of the threads 29 and 30 takes place, as shown in FIG. 8, said threads constituting at this phase again the bottom part of the leno weave shed, the binding thread 28 constituting again its upper part.
  • a device for forming a leno weave on a loom having first and second heald frames reciprocable in opposite directions comprising, in combination, a first thread guide means mounted on said first heald frame for movement therewith along a path and adapted for guiding a first warp thread along said path; actuating means mounted on said first heald frame; a pair of second thread guide means mounted on said second heald frame for movement therewith, and for opposite reciprocating movement relative to said necond heald frame in directions transverse to said opposite directions and between two end positions for holding a pair of second warp threads alternately on opposite sides of said path; and control means mounted on said second heald frame for movement therewith and being connected with said pair of second thread guide means, said control means being mounted on said second heald frame for movement relative thereto between two end positions in which said second thread guide means are in said two end positions of the same, said control means being engaged by said actuating means during opposite reciprocating strokes of said heald frames and moved by the same between said end positions thereof so that leno war
  • a device for forming a leno weave on a loom having first and second heald frames reciprocable in opposite directions comprising, in combination, a first thread guide means mounted on said first heald frame for movement therewith along a path and adapted for guiding a first warp thread along said path; resilient actuating means mounted on said first heald frame; a pair of second thread guide means mounted on said second healed frame for movement therewith, and for opposite reciprocating movement relative to said second heald frame in directions transverse to said opposite directions and between two end positions for holding a pair of second warp threads alternately on opposite sides of said path; and control means including a tiltable element mounted on said second heald frame for movement therewith and being connected with said pair of second thread guide means, said tiltable element being mounted on said second heald frame for angular movement relative thereto between two end positions in which said second thread guide means are in said two end positions of the same, said tiltable element being engaged by said actuating means during opposite reciprocating strokes of said heald frames and turned by the same between said end
  • a device including a holder secured to said second heald frame and formed with a groove transverse to the direction of reciprocating movement of said frames; and wherein said second thread guide means are slidably mounted in said groove of said holder and have eyes for guiding the pair of second warp threads.
  • said resilient actuating means includes a tie rod having a nose, and at least one spring secured to one end of said tie rod; and wherein said tiltable element has a projecting tip and a pair of recesses on opposite sides of said tip c0- operating with said nose and alternatingly receiving the same during opposite reciprocating strokes of said frames whereby said tiltable element is turned between said end positions for shifting said second thread guide means between said end positions of the same.
  • a device including another spring secured to the other end of said tie rod for connecting the same with said second frame.
  • a device including a rigid tubular member secured to said second heald frame and having said second spring located therein so that the same is guided for rectilinear movement.
  • each of said slidable References Cited by the Examiner members having a recess; and wherein said control means UNITED STATES PATENTS include a tlltable element mounted on said holder for turning movement about an axis, and having a pair of 1,226,361 5/1917 Nlederwefer 13954 projecting pins respectively located in said recesses of 5 2,802,488 8/1954 Opletal et a1 139-54 said slidable members of said second thread guide means, 2,918,945 12/1959 Han said tiltable element having a central tip, and a pair of FOREIGN PATENTS recesses on opposite sides of said central tip adapted to 464,248 6/1951 Italy.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Auxiliary Weaving Apparatuses, Weavers' Tools, And Shuttles (AREA)
US393155A 1963-09-03 1964-08-31 Device for forming a leno weave Expired - Lifetime US3242949A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS487163 1963-09-03

Publications (1)

Publication Number Publication Date
US3242949A true US3242949A (en) 1966-03-29

Family

ID=5392408

Family Applications (1)

Application Number Title Priority Date Filing Date
US393155A Expired - Lifetime US3242949A (en) 1963-09-03 1964-08-31 Device for forming a leno weave

Country Status (6)

Country Link
US (1) US3242949A (cs)
AT (1) AT252148B (cs)
BE (1) BE652547A (cs)
CH (1) CH426674A (cs)
DE (1) DE1535393B1 (cs)
GB (1) GB1067000A (cs)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442301A (en) * 1967-07-27 1969-05-06 Marshall John D Loom stop motion
US3561496A (en) * 1968-01-18 1971-02-09 Diederichs Atel Device for binding wefts on a shuttleless loom
US4846229A (en) * 1986-11-11 1989-07-11 Starlinger Huemer F X Circular loom

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3236035C1 (de) * 1982-09-29 1984-04-05 Gebrüder Schmeing, 4280 Borken Vorrichtung zur Herstellung einer Gewebe-Schnittleiste
AT386848B (de) * 1986-09-11 1988-10-25 Chemiefaser Lenzing Ag Rundwebmaschine fuer dreherbindung
IT1238228B (it) * 1989-12-01 1993-07-12 Roberto Spanevello Dispositivo per un'efficace legatura a giro inglese del bordo lateraledi un tessuto in un telaio tessile

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1226361A (en) * 1914-04-21 1917-05-15 Fiedler & Co G M B H Device for making the cutting-lists of slit-up fabrics.
US2802488A (en) * 1954-08-30 1957-08-13 Vyzk Ustav Tvarecich Stroju Method and device for producing gauze borders on fabrics
US2918945A (en) * 1958-07-16 1959-12-29 Crompton & Knowles Corp Selvage and method and means for making same

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1230808A (fr) * 1958-07-12 1960-09-20 Sdruzeni Podniku Textilniho St Dispositif pour la formation de lisière

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1226361A (en) * 1914-04-21 1917-05-15 Fiedler & Co G M B H Device for making the cutting-lists of slit-up fabrics.
US2802488A (en) * 1954-08-30 1957-08-13 Vyzk Ustav Tvarecich Stroju Method and device for producing gauze borders on fabrics
US2918945A (en) * 1958-07-16 1959-12-29 Crompton & Knowles Corp Selvage and method and means for making same

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3442301A (en) * 1967-07-27 1969-05-06 Marshall John D Loom stop motion
US3561496A (en) * 1968-01-18 1971-02-09 Diederichs Atel Device for binding wefts on a shuttleless loom
US4846229A (en) * 1986-11-11 1989-07-11 Starlinger Huemer F X Circular loom

Also Published As

Publication number Publication date
DE1535393B1 (de) 1970-08-27
GB1067000A (en) 1967-04-26
BE652547A (cs) 1964-12-31
AT252148B (de) 1967-02-10
CH426674A (de) 1966-12-15

Similar Documents

Publication Publication Date Title
US3242949A (en) Device for forming a leno weave
US3952778A (en) Selvage forming device
US2918945A (en) Selvage and method and means for making same
GB1356545A (en) Weaving machine for manufacturing a partly woven and partly knitted textile fabric
US3796235A (en) Harness arrangement for a loom
US2938547A (en) Weft holding means for weaving looms with continuous weft feed
US3741256A (en) Device for the production of intermediate selvages in fabric webs
US4066105A (en) Method of and apparatus for forming a leno selvage on woven goods
US2955619A (en) Loom selvage motion
US3720236A (en) Arrangement for forming a selvage for use on a loom
US3131728A (en) Selvedge formation
US3561496A (en) Device for binding wefts on a shuttleless loom
US2300281A (en) Selvage-forming device
US3831638A (en) Shedding mechanism for looms
US1872935A (en) Center selvage motion
US3369570A (en) Leno selvedge device
US2208886A (en) Shuttleless loom
US3186442A (en) Apparatus and method for forming a decorative fringe
US3108617A (en) Loom selvage motion
US3191634A (en) Means for forming selvages in looms
US3280852A (en) Apparatus for forming selvedges containing turning threads
US2187344A (en) Weft inserting device for weaving looms having a continuous weft supply
US2398484A (en) Woven fabric
US1612631A (en) Loom and in weaving process
US840275A (en) Pile-fabric loom.