EP0940489A1 - Tackle device for Jacquard machines - Google Patents
Tackle device for Jacquard machines Download PDFInfo
- Publication number
- EP0940489A1 EP0940489A1 EP98250045A EP98250045A EP0940489A1 EP 0940489 A1 EP0940489 A1 EP 0940489A1 EP 98250045 A EP98250045 A EP 98250045A EP 98250045 A EP98250045 A EP 98250045A EP 0940489 A1 EP0940489 A1 EP 0940489A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pulley
- cord
- roller
- over
- deflection roller
- 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.)
- Withdrawn
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Classifications
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/06—Double-lift jacquards
-
- D—TEXTILES; PAPER
- D03—WEAVING
- D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
- D03C3/00—Jacquards
- D03C3/12—Multiple-shed jacquards, i.e. jacquards which move warp threads to several different heights, e.g. for weaving pile fabrics
Abstract
A pulley arrangement for forming a shed in the warp threads of a
Jacquard machine, comprising a plurality of pulley elements and a
plurality of complementary hooks connected by means of a plurality of
vertically movable pulley cords and lifting knives, such that control of
a suspension point of the pulley cord enables a selection of four
possible positions for the warp threads for at least each of two picks,
characterized in that each pulley arrangement cooperates with one set of
two of the complementary hooks (111,112), and comprises a pulley element
(114) with top and bottom rollers connected one above the other and
suspended below each set of the complementary hooks by means of a first
pulley cord (113), each end of the first pulley cord being fixed to one
of the complementary hooks (111,112), while downward-hanging portion of
the first pulley cord runs over the top roller (114') of the pulley
element (114), thereby suspending said pulley element, one end of the
second pulley cord (115) being attached to one of the complementary
hooks, with another end of the second pulley cord being attached to a
first deflection roller (121), and guided over said deflection roller
(121) is a third pulley cord (118) having one end connected to a fixed
point (116) of the Jacquard machine, a portion of the third pulley cord
guided over the first deflection roller (121), runs back up over a
second deflection roller (117) and guided over the bottom roller (114")
of the pulley element (114), with another end of the third pulley cord
being connected to one or more warp threads (120) by means of a
plurality of harness cords; one end of a fourth pulley cord (122) being
attached to the second deflection element (117) and another end being
fixed to a grid (119) which is movable up and down in phase with
one of the a plurality of knives.
Description
- The present invention generally relates to Jacquard machines, and particularly to the arrangement or system of pulleys, pulley cords and hooks for forming a shed in the warp threads, as used in carpets face-to-face weaving.
- In U.S. Patent No. 5,139,052 - the contents of which is hereby incorporated by reference - there has been described a pulley arrangement which enables the selection of three possible positions for the warp threads for at least each of two picks (hereinafter referred "to the '052 Patent").
- The objects and advantages of the '052 Patent arrangement over the conventional three positions arrangements have been explained in detail with reference to Figs. 1 and 2 of it's drawings; in the following specification, similar nomenclature and reference numerals will be used.
- It is an object of the present invention to provide a pulley arrangement which enables the creation of five positions, whereby the amount of the dead pile is decreased and/or becomes weaved to and incorporated with the bottom of the carpet. This will result in a higher yield and improve (thicken) the quality of the product.
- According to a general aspect of the invention there is provided a pulley arrangement comprising for forming a shed in the warp threads of a Jacquard machine, a plurality of pulley elements and a plurality of complementary hooks connected by means of a plurality of vertically movable pulley cords, such that control of a suspension point of the pulley cord enables a selection of four possible positions for the warp threads for at least each of two picks. Each pulley, arrangement works together with one set of two of the complementary hooks, and comprises a pulley element with top and bottom roller connected above one another and suspended below each set of the complementary hooks by means of a first pulley cord, each end of the first pulley cord being fixed to one of the complementary hooks, while downward-hanging portion of the first pulley cord runs over the top roller of the pulley element, thereby suspending said pulley element, one end of the second tackle cord being attached to one of the complementary hooks, with another end of the second pulley cord being attached to a first deflection roller, and guided over said deflection roller is a third pulley cord having one end connected to a fixed point of the Jacquard machine, a portion of the third pulley cord guided over the first deflection roller, runs back up over a second deflection roller and guided over the bottom roller of the pulley element, with another end of the third pulley cord being connected to one or more warp threads by means of a plurality of harness cords; one end of a forUth pulley cord being attached to the second deflection element and another end being fixed to a grid which is movable up and down in a phase with one of the a plurality of knives.
- This description is illustrated with reference to the appended drawings, in which:
- Fig. 1 shows schematically a side view - in conjunction with one set of complementary hooks - of the first possible embodiment of the pulley arrangement according to the invention;
- Fig. 2 shows schematically a side view - in conjunction with one set of complementary hooks - of the second possible embodiment of the pulley arrangement according to the invention,
- Fig. 3 shows schematically a side view - in conjunction with two sets of complementary hooks - of the third possible embodiment of the pulley arrangement according to the invention;
- Fig. 4 is schematic representation of a pulley arrangement with three sets of complementary hooks - the fourth possible embodiment of the pulley arrangement according to the invention; and
- Fig. 5 shows schematically a weave of a pile fabric woven with wires obtained by utilizing the Jacquard machine with pulley arrangements in accordance with the present invention.
-
- The tackle suspension system according to the invention consists in that in a first possible embodiment (see Fig. 1) the two ends of a
first pulley cord 113 are fixed at the bottom side of each of thehooks first pulley cord 113 hanging down in a loop. Apulley element 114 with its top roller 114' is hung in said loop. One end of asecond pulley cord 115 is affixed to the bottom side of one of thecomplementary hooks 111, and it's other end being connected to afirst deflection roller 121. - Over the
first deflection roller 121 lies athird pulley cord 118, one end of which is connected to a fixed point of the Jacquardmachine 116 disposed lower down than thepulley element 114. Thethird pulley cord 118 is further made to hang lower down than asecond deflection roller 117 in a loop, extends up and laid over the bottom pulley roller 114' and then down, connected to one ormore warp threads 120. Thesecond deflection roller 117 is supported from below by afourth pulley cord 122 connected to a second up and downmovable grid 119. Thegrid 119 is coupled (by any known means -- not shown) to any of thehooks grid 119. For the bottom carpet, the same movement will result a movement of (1,5h) of thegrid 119. - Fig. 2 shows schematically a second possible embodiment of the pulley tackle arrangement with a pair of complimentary hooks according to the invention.
- Here the first and
second pulley elements complementary hooks second pulley element 216 is the end of athird pulley cord 218 which is made to hang lower down in a loop, around thefirst deflection roller 217, is taken back up and laid over the bottom pulley roller 216'' of thesecond pulley element 216, and the other end is then fixed to asecond deflection roller 221, to suspend it. - The
first deflection roller 217 is suspended in the loop formed with thethird pulley cord 218, and fixed by a fixed cord 225 to thefirst grid 219 disposed horizontally lower down, while this grid being disposed movable up and down with one of the knives 211' and 212'. - The
fourth pulley cord 223 hangs over thesecond deflection roller 221, extends down in a loop over athird deflection roller 222, then hangs over the bottom roller 214'' of thefirst pulley element 214. One end of thefourth pulley cord 223 is connected to asecond grid 224 movable up and down with one of the knives 211' and 212', and it's other end is connected to thewarp threads 220. Thethird deflection roller 222 is suspended in the loop formed with thefourth pulley cord 223 and coupled to the fixed point of the Jacquardmachine 226 directly by means of fixed cord 227. - Another possible embodiment of the pulley arrangement with two sets of complementary hooks is shown in Fig 3.
- Here the two ends of first and
second pulley cords 315 and 316 are fixed to the bottom sides of two sets ofcomplementary hooks pulley cords 315 and 316 hang down in loops around top rollers 317' and 318' of first andsecond pulley elements - A
fourth pulley cord 319, hangs down in a loop over a third deflection roller 320', being top roller ofpulley element 320, then hangs over the bottom roller 317'' of thefirst pulley element 317. One end of thepulley cord 319 is connected to a fixed point of the Jacquardmachine 321 and its other end is connected to thewarp threads 322. Thepulley element 320 with its deflection roller 320' is now suspended in the loop formed with thefourth pulley cord 319. - A
third pulley cord 323, hangs down in a loop over afirst deflection roller 324, hangs over the bottom pulley roller 318'' and hangs down in a loop over asecond deflection roller 325. One end of thethird pulley cord 323 is fixed to the bottom roller 318'' of thesecond pulley element 318, and the other one is connected to the bottom roller 320'' of thepulley element 320. The first andsecond deflection rollers - Fig. 4 shows schematically another possible pulley arrangement according to the invention. This modification is provided with three sets of
complementary hooks pulley elements separate deflection rollers third pulley elements third pulley elements third pulley cords first pulley cord 426 is fixed to one of the hooks of the first set of the complementary hooks, each end of the second pulley cord is fixed to one of the hooks of the second set of the complementary hooks and each end of the third pulley cord is fixed to one of the hooks of the third set of the complementary hooks. - Each
warp thread 423 is now connected by means of the harness cord to the bottom end of afifth pulley cord 424. Thefifth pulley cord 424 runs over a third deflection roller 422 and is directed back downwards, with the other end thereof being connected to a fixed point of the Jacquard machine orgrid 425. The third deflection roller 422 is suspended directly by athird pulley cord 426, which runs over the bottom roller 419'' of thethird pulley element 419 and directed downwards. Then it hangs down in a loop over asecond deflection roller 421, hangs over the bottom pulley roller 418'' of thesecond pulley element 418 and runs down in a loop over afirst deflection roller 420. The second end of thepulley cord 426 is fixed to the bottom roller 417'' of thefirst pulley element 417. The first andsecond deflection rollers - As will be understood from Figs. 1 and 2, through the moving of the hooks over a distance (h), typically of 60mm, and disposing the adjustable grids over respective predetermined distances, five working positions of the warp threads can be provided, totaling the range of 4 X (h) = 240mm.
- It is also readily understood, with regard to Fig. 3, that through moving the
complementary hooks warp threads 322 can also be achieved. Simultaneous lifting of all thehooks warp threads 322, moving thehooks hooks hooks hooks hooks warp threads 322. - The operation of the Fig. 4 embodiment is analogous to the preceding embodiment.
- For illustration of the possibilities for use of the devices according to the invention we look at a weave of a pile fabric woven with wires (see schematic illustration in Fig. 5). For the weaving of such certain weaves it must be possible for the pile warp threads to be lifted in four possible positions. On each pick two wefts W has been inserted -- one in the top fabric (TW), and one in the bottom fabric (BW). The 1st to the 6th picks have been indicated by
serial numbers 1 to 6. - The two backing fabrics comprise binder warp threads (7) and (7') and (8) and (8') respectively and tight warp threads (9) and (10) respectively. In addition, the pile warp threads forming the pile are woven between the two backing fabrics which are held at a certain distance from each other, while the dead pile warp threads are bound into either the top fabric or the bottom fabric.
- Depending on the pattern (the color) which one wishes to obtain in the fabric, a pile warp thread until then forming the pile is bound into the top fabric or bottom weave at a particular weft insertion, and a pile warp thread which has been dead until then can begin to form pile at a particular weft insertion.
- The three pile warp threads are indicated in Fig. 5 by P1, P2 and P3. The pile warp thread P1 is provided for binding into the top weave. The pile warp threads P2 and P3 are provided for binding into the bottom weave.
- The four necessary positions of the pile warp threads can be described as follows:
- BOTTOM position: the pile warp threads are situated below weft BW of the bottom fabric;
- TOP position: the pile warp threads are situated above weft TW of the top fabric;
- MIDDLE positions: the pile warp threads are situated between TW and BW;
-
- In pick/
s 1 to 6 the pile warp thread P1 is lifted in succession, to the following positions: bottom - top - bottom - top - bottom - middle. - The pile warp thread P2 is lifted in succession, to the following positions: middle - middle - middle - middle - middle - bottom.
- And the pile warp thread P3 is lifted in succession, to the following positions: top - bottom - top - bottom - top - middle.
- By selection of the hooks, in cooperation with the device to which the invention relates, it is possible to select any of the four working positions for each pick/s.
- It will be thus readily understood that for four machine stroked -- four color lines are woven -- and not only two as in the conventional machines. The yield or efficiency of the machine utilizing the method of the present invention is therefore doubled.
- Those skilled in the art will readily appreciate that various changes and modifications may be applied without departing from the scope of the invention as defined in and by the appended claims.
Claims (5)
- A pulley arrangement for forming a shed in the warp threads of a Jacquard machine, comprising a plurality of pulley elements and a plurality of complementary hooks connected by means of a plurality of vertically movable pulley cords and lifting knives, such that control of a suspension point of the pulley cord enables a selection of four possible positions for the warp threads for at least each of two picks, characterized in that each pulley arrangement cooperates with one set of two of the complementary hooks, and comprises a pulley element with top and bottom rollers connected one above the other and suspended below each set of the complementary hooks by means of a first pulley cord, each end of the first pulley cord being fixed to one of the complementary hooks, while downward-hanging portion of the first pulley cord runs over the top roller of the pulley element, thereby suspending said pulley element, one end of the second pulley cord being attached to one of the complementary hooks, with another end of the second pulley cord being attached to a first deflection roller, and guided over said deflection roller is a third pulley cord having one end connected to a fixed point of the Jacquard machine, a portion of the third pulley cord guided over the first deflection roller, runs back up over a second deflection roller and guided over the bottom roller of the pulley element, with another end of the third pulley cord being connected to one or more warp threads by means of a plurality of harness cords; one end of a fourth pulley cord being attached to the second deflection element and another end being fixed to a grid which is movable up and down in phase with one of the a plurality of knives.
- The pulley arrangement according to claim 1, further characterized in that the grid is movable up and down in case of top fabric over a height h/2 and in case of bottom fabric over a height 1,5h, where h is the height of a lift of said knives.
- A pulley arrangement for forming a shed in the warp threads of a Jacquard machine, comprising a plurality of pulley elements and a plurality of complementary hooks connected by means of a plurality of vertically movable pulley cords and lifting knives, such that control of a suspension point of the pulley cord enables a selection of four possible positions for the warp threads for at least each of two picks, characterized in that each pulley arrangement cooperates with one set of two of the complementary hooks, and comprises first and second pulley elements with top and bottom rollers connected one above the other and suspended below each set of the complementary hooks, one end of a first pulley cord being fixed to the first complementary hook and another end being attached to the first pulley element, thereby suspending the first pulley element, one end of a second pulley cord being fixed to the second complementary hook and another end being attached to the second pulley element, thereby suspending the second pulley element, one end of the third pulley cord being attached to the bottom roller of the second pulley element, runs back up over a first deflection roller and with another end of the third pulley cord being attached to a second deflection roller, thereby suspending the second deflection roller, guided over the second deflection roller is a fourth pulley cord, having one end connected to a fixed point of the Jacquard machine and having another end connected to one or more warp threads, a downward-hanging portion of the fourth pulley cord runs over the third deflection roller and runs back up over the bottom roller of the first pulley element, the first deflection roller being attached to a first grid which is movable up and down and the third deflection roller being attached to a second grid which is movable up and down.
- A pulley arrangement for forming a shed in the warp threads of a Jacquard machine, comprising a plurality of pulley elements and a plurality of complementary hooks connected by means of a plurality of vertically movable pulley cords, such that control of a suspension point of the pulley cord enables a selection of four possible positions for the warp threads for at least each of two picks, characterized in that each pulley arrangement cooperates with two sets of two complementary hooks, and comprises first and second pulley elements with top and bottom roller connected above one another and suspended below each sets of the complementary hooks by means of first and second pulley cords, each end of the first pulley cord being fixed to one of the first set of the complementary hooks and each end of the second pulley cord being fixed to one of the second set of the complementary hooks, while a downward-hanging portion of the first pulley cord runs over the top roller of the first pulley element, thereby suspending the first pulley element, and a downward-hanging portion of the second pulley cord runs over the top roller of the second pulley element, thereby suspending the second pulley element, one end of a third pulley cord being attached to the bottom roller of the second pulley element, a portion of the third pulley cord hanging below the second pulley element runs back up over the first deflection roller, runs over the bottom roller of the second pulley element, runs back up over a second deflection roller with another end of the third pulley cord being attached to a bottom roller of a third pulley element, one end of a fourth pulley cord being attached to the bottom pulley of the first pulley element, and another end being attached to the first pulley element, thereby suspending the first pulley element, one end of a second pulley cord being fixed to the second complementary hook and another end being attached to the second pulley element, thereby suspending the second pulley element, one end of the third pulley cord being attached to the bottom roller of the second pulley element, runs back up over a first deflection roller and with another end of the third pulley cord being attached to a second deflection roller, thereby suspending the second deflection roller, guided over the second deflection roller is a fourth pulley cord, having one end connected to a fixed point of the Jacquard machine and having another end connected to one or more warp threads, a downward-hanging portion of the fourth pulley cord runs over the third deflection roller and runs back up over the bottom roller of the first pulley element, the first deflection roller being attached to a first up and down movable grid and the third deflection roller being attached to a second up and down movable grid.
- A pulley arrangement for forming a shed in the warp threads of a Jacquard machine, comprising a plurality of pulley elements and a plurality of complementary hooks connected by means of a plurality of vertically movable pulley cords, such that control of a suspension point of the pulley cord enables a selection of four possible positions for the warp threads for at least each of two picks, characterized in that each pulley arrangement cooperates with three sets of two complementary hooks, and comprises first, second and third pulley elements with top and bottom rollers connected one above the other and suspended below each of sets of the complementary hooks by means of first, second and third pulley cords, each end of the first pulley cord being fixed to one of the hooks of the first set of the complementary hooks, each end of the second pulley cord being fixed to one of the hooks of the second set of the complementary hooks and each end of the third pulley cord being fixed to one of the hooks of the third set of the complementary hooks, while a downward-hanging portion of the first pulley cord runs over the top roller of the first pulley element, thereby suspending the first pulley element, a downward-hanging portion of the second pulley cord runs over the top roller of the second pulley element, thereby suspending the second pulley element and a downward-hanging portion of the third pulley cord runs over the top roller of the third pulley element, thereby suspending the third pulley element, one end of a fourth pulley cord being attached to the bottom roller of the first pulley element, a portion of the fourth pulley cord hanging below the first pulley element, runs back up over the first deflection roller, runs over the bottom roller of the second pulley element, runs back up over a second deflection roller, runs over the bottom roller of the third pulley element and with another end of the fourth pulley cord being attached to a third deflection roller, and guided over the third deflection roller is a fifth pulley cord having one end connected to a fixed point of the Jacquard machine and having another end connected to one or more warp threads.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98250045A EP0940489A1 (en) | 1998-02-06 | 1998-02-06 | Tackle device for Jacquard machines |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98250045A EP0940489A1 (en) | 1998-02-06 | 1998-02-06 | Tackle device for Jacquard machines |
Publications (1)
Publication Number | Publication Date |
---|---|
EP0940489A1 true EP0940489A1 (en) | 1999-09-08 |
Family
ID=8234581
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP98250045A Withdrawn EP0940489A1 (en) | 1998-02-06 | 1998-02-06 | Tackle device for Jacquard machines |
Country Status (1)
Country | Link |
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EP (1) | EP0940489A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2910495A1 (en) * | 2006-12-26 | 2008-06-27 | Staubli Lyon Soc Par Actions S | Mounting mechanism for positioning warp thread of jacquard-type weaving machine, has hitch comprising fillet whose one end is fixed to frame of mechanism, while another end is arranged with lower cutter displacing lower pulley and cord |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1050774A (en) * | 1956-08-20 | 1954-01-11 | Lehembre & Cie A | Universal multi-position mechanics for looms |
US5139052A (en) * | 1990-05-31 | 1992-08-18 | N.V. Michel Van De Wiele | Tackle suspension for a jacquard machine |
EP0612874A1 (en) * | 1993-02-12 | 1994-08-31 | CHEMNITZER WEBMASCHINENBAU GmbH | Method and device for making a double-carpet |
EP0627511A1 (en) * | 1993-04-23 | 1994-12-07 | N.V. Michel Van de Wiele | Jacquard machine |
EP0665312A1 (en) * | 1994-01-28 | 1995-08-02 | Staubli-Verdol S.A. | Shedding mechanism providing four warp yarns positions in a loom |
DE19547765A1 (en) * | 1994-12-20 | 1996-06-27 | Wiele Michel Van De Nv | Jacquard pulley system |
-
1998
- 1998-02-06 EP EP98250045A patent/EP0940489A1/en not_active Withdrawn
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR1050774A (en) * | 1956-08-20 | 1954-01-11 | Lehembre & Cie A | Universal multi-position mechanics for looms |
US5139052A (en) * | 1990-05-31 | 1992-08-18 | N.V. Michel Van De Wiele | Tackle suspension for a jacquard machine |
EP0612874A1 (en) * | 1993-02-12 | 1994-08-31 | CHEMNITZER WEBMASCHINENBAU GmbH | Method and device for making a double-carpet |
EP0627511A1 (en) * | 1993-04-23 | 1994-12-07 | N.V. Michel Van de Wiele | Jacquard machine |
EP0665312A1 (en) * | 1994-01-28 | 1995-08-02 | Staubli-Verdol S.A. | Shedding mechanism providing four warp yarns positions in a loom |
DE19547765A1 (en) * | 1994-12-20 | 1996-06-27 | Wiele Michel Van De Nv | Jacquard pulley system |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2910495A1 (en) * | 2006-12-26 | 2008-06-27 | Staubli Lyon Soc Par Actions S | Mounting mechanism for positioning warp thread of jacquard-type weaving machine, has hitch comprising fillet whose one end is fixed to frame of mechanism, while another end is arranged with lower cutter displacing lower pulley and cord |
EP1939338A1 (en) * | 2006-12-26 | 2008-07-02 | Staubli Lyon | Shed forming device in a Jacquard loom, and Jacquard loom equipped with such a device |
CN101240472B (en) * | 2006-12-26 | 2011-11-09 | 施托布利里昂公司 | Weaving device, and jacquard loom equipped with such a device |
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