US3455339A - Double-lift,open-shed jacquard loom - Google Patents

Double-lift,open-shed jacquard loom Download PDF

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Publication number
US3455339A
US3455339A US693244A US3455339DA US3455339A US 3455339 A US3455339 A US 3455339A US 693244 A US693244 A US 693244A US 3455339D A US3455339D A US 3455339DA US 3455339 A US3455339 A US 3455339A
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United States
Prior art keywords
hook
hooks
deflected
double
lift
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Expired - Lifetime
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US693244A
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English (en)
Inventor
Wolfgang Seiler
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.)
MAS FAB OSKAR SCHLEICHER
SCHLEICHER OSKAR MASCHF
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SCHLEICHER OSKAR MASCHF
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C3/00—Jacquards
    • D03C3/24—Features common to jacquards of different types
    • 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

Definitions

  • the invention concerns a Jacquard loom of the doublelift, open-shed kind with lifter hooks controlled by socalled main needles.
  • One object of the invention is to arrange for the sets of gritfes to be movable in opposite directions but in such a way that their paths do not cross; thus the structural length of the loom can be reduced.
  • the invention also has the object of reducing the time during which the hooks have to be deflected by the main needles so that wear on the main needles and hooks caused by frictional contact therebetween can be reduced.
  • the invention relates to a double-lift, open-shed Jacquard loom.
  • Jacquard looms which incorporate two series-arranged sets of griifes which move in opposite directions so that their paths cross each other, and in which the lifter hooks have two shanks and are controlled by the main needles.
  • It is also known to provide a set of stationary gritfes on which the lifter hooks are supported when they are to stay in the upper shed.
  • This invention has the object of providing a Jacquard loom whose structural length is considerably reduced and in which the hooks do not have to be thrust away or deflected for so long a time.
  • each hook has two mutually spaced hook noses or lugs one of which co-operates with the upper set of griifes and the other with the lower set of griifes.
  • the hook noses (lugs) are located on the two ends of a double-armed lever which is pivotably attached to one of the shanks or stems of the hook and can be so pivoted as a result of engagement therewith by the griffe and against the bias of a restoring forcethat the other nose (lug) is shifted to a position outside the area of influence of the second set of grilfes.
  • a particularly favourable form of construction consists in embodying the shank of the hook which carries the two-armed lever as a flat rod or bar.
  • the above-mentioned restoring force is realised, according to a further feature of the invention, by means of a bar spring which is attached to one end of the lever so as to form an extension thereof and whose free end is deflectably arranged on the shank of the hook.
  • FIGURES 1-3 show diagrammatically the Jacquard loom according to the invention in different control positions.
  • FIGURES 4a-4d present views from the front and side of the hook according to the invention, showing different working positions thereof.
  • FIGURES 1-3 illustrate the positions of the loom for controlling shedding. For the sake of simplicity only four main needles 1 and four lifter hooks 2a-2d are shown.
  • the main needles 1 are mounted in a needle board 5 and in a needle grid 6 and are controlled by a card (Jacquard) cylinder 3a or by a preliminary needle mechanism 3b.
  • the thrusting motions of the main needles 1 are transmitted, via the angled projections or shoulders 4 on the needles 1, to the hooks 2.
  • the hooks 2 are guided in guide grid 7 and are supported in their rest position on a stationary bottom board 8.
  • the invention provides, above the guide grid 7, two mutually superposed sets of gritfes 9, 10 which move in opposite directions and serve to move with them, into the upper shed position, those hooks 2 which have not been deflected by the main needles 1.
  • a further control movement causes the hooks 2 to be moved back into the lower shed position by the sets of griffes 9, 10 or, through the agency of nose (lug) 11 which is known per se, to be supported in the upper shed position on a set of stop (check) gritfes arranged below the main needles 1.
  • FIGURE 1 which illustrates the positions of the set of griffes 10 controlling the upper shed position (the sets of gritfes 9, 10 are in their uppermost and lowermost positions respectively), hook 2a is in its inoperative position and rests on the bottom board 8.
  • This hook 2a is not deflected by the associated main' needle 1 or by its angled projection or shoulder 4.
  • Hook 211 also is not deflected by its associated main needle 1, but is in the upper shed position.
  • Hook 2c is in its inoperative position and is deflected by its associated main needle, whereas hook 2d is in the upper shed position and is in its deflected position.
  • FIGURE ,2 which illustrates the control position (the two sets of griffes have moved a certain distance towards each other)
  • the following alteration has taken place: Hook 2a is moved by the set of gritfes 9 into the upper shed position, as it has not been deflected or thrust away by its associated main needle.
  • Hook 2b remains in the upper shed position-in spite of the fact that the set of griifes 10 has been loweredbecause it also has not been deflected and as a result is supported by the set of stop (check) grifl'es 12 through the agency of nose or lug 11.
  • Hook 2c remains in its inoperative position, as it has been deflected by its associated main needle 1, whereas hook 2a is lowered into the lower shed position as, in
  • FIGURE 3 which illustrates the openshed control position of the lower set of grifles 9 (the lower set of grifles 9 is in its uppermost position and the upper set of grifles 10 is in its lowermost position), hooks 2a and 2b are in the upper shed position, hook 212 being deflected.
  • hook 2b is lowered, while hook 2a remains in the upper shed position owing to the fact that its nose (lug) 11 is supported by the set of stop (check) griflFes 12.
  • Hooks 2c and 2d are in their inoperative position, although hook 2c has been deflected, while hook 2d has not been deflected. Accordingly, hook 20 will remain in its inoperative position during the next working stroke, whereas the set of gritfes 10 will carry hook 20. with it into the upper shed position.
  • each hook 2 has a shank 13 constructed as a flat rod or bar and a springy shank 14 whose bent-over end is welded to the shank 13 and forms the nose (lug) 11.
  • a two-armed lever 15 is pivotably mounted on shank 13 through the intermediary of a pivot pin 16.
  • the lever is formed with a nose (lug) at each of its ends; the lower nose is designated as 17 and the upper nose as 18.
  • both noses extend a short distance beyond the front edge of the shank 13 of the hook.
  • the twoarmed lever 15 is also subject to the action of a restoring force which is in the embodiment shown is constituted by a bar spring 19. This bar spring is located at one end of lever 15 so as to constitute an extension thereof and is also supported between two stops 20 fixed to the shank 13 of the hook.
  • the two-armed lever can be laterally deflected, against the bias of this spring 19, by engagement of the grifies 9 under noses 17 or of grifles under noses 18.
  • the nose which is not thus engaged will be pivoted so that it will move to a point beyond the front edge of the hook shank 13, so that it will be unaligned with the path of movement of the other set of griffes.
  • the hook shank 13 Inthe position illustrated in FIGURE 4b the hook shank 13 can be guided unobstructed past the set of grifles 10 and past the set of grifles 9 in the position shown in FIGURE 40.
  • the hook noses are located on the two ends of a twoarmed lever which is pivotably fixed to a shank of the hook and is so pivotable, against the bias of a restoring force and owing to the engagement of a grifle with one of said hook noses from the undeflected position that the other hook nose is moved to a position lying beyond the path of movement of the other set of griffes.
  • Double-lift, open-shed Jacquard loom as claimed in claim 1, wherein the hook shank equipped with the twoarmed lever is constructed as a flat bar.
  • Double-lift, open-shed, Jacquard loom as claimed in claim 2, wherein at least one bar spring serves as the restoring force and is fixed to one end of the lever so as to constitute an extension thereof, while its free end is deflectably attached to the associated shank of the hook.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US693244A 1967-01-04 1967-12-26 Double-lift,open-shed jacquard loom Expired - Lifetime US3455339A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEM0072301 1967-01-04

Publications (1)

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US3455339A true US3455339A (en) 1969-07-15

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US693244A Expired - Lifetime US3455339A (en) 1967-01-04 1967-12-26 Double-lift,open-shed jacquard loom

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US (1) US3455339A (es)
BE (1) BE708399A (es)
CH (1) CH484303A (es)
ES (1) ES343109A1 (es)
FR (1) FR1550691A (es)
GB (1) GB1139109A (es)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835895A (en) * 1972-04-11 1974-09-17 Verdol Sa Loom jacquards of the double-lift type
US3967652A (en) * 1973-07-06 1976-07-06 Staubli Ltd. Spring hook for the harness pull of a double-lift open-shed jacquard machine
US4023598A (en) * 1975-01-31 1977-05-17 Sulzer Brothers Limited Jacquard lifting wire
US4041987A (en) * 1976-08-23 1977-08-16 Sulzer Brothers Limited Jacquard machine equipped with lifting wires and stationary arresting blades
US4060101A (en) * 1975-07-10 1977-11-29 Firma Oskar Schleicher Double lift, open shed Jacquard loom
US4067363A (en) * 1975-07-25 1978-01-10 Firma Grosse Webereimaschinen Gmbh Shedding device for weaving looms, in particular for double-lift open-shed jacquard machines
US4530380A (en) * 1983-04-12 1985-07-23 Fa. Oskar Schleicher Single-leg hook for a double lift open shed Jacquard loom

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3011190C2 (de) * 1980-03-22 1983-09-01 Grosse Webereimaschinen Gmbh, 7910 Neu-Ulm Doppelhub-Offenfach-Jacquardmaschine

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE48033C (de) * E. MÜLLER JR. in Krefeld Mechanischer Jacquard-Webstuhl mit Selbstausrückung
FR319051A (fr) * 1902-02-24 1902-11-03 D'hondt Une nouvelle disposition pour tisser, mouvement de crochets pour mécaniques dites "jacquard et armure"
DE340349C (de) * 1920-01-07 1921-09-09 Franz Pawelka Doppelfach-Jacquardmaschine
US2269121A (en) * 1941-07-25 1942-01-06 Migliora Xerus Shedding mechanism
US2941551A (en) * 1958-01-09 1960-06-21 Lees & Sons Co James Semi-oriental jacquard and method

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE48033C (de) * E. MÜLLER JR. in Krefeld Mechanischer Jacquard-Webstuhl mit Selbstausrückung
FR319051A (fr) * 1902-02-24 1902-11-03 D'hondt Une nouvelle disposition pour tisser, mouvement de crochets pour mécaniques dites "jacquard et armure"
DE340349C (de) * 1920-01-07 1921-09-09 Franz Pawelka Doppelfach-Jacquardmaschine
US2269121A (en) * 1941-07-25 1942-01-06 Migliora Xerus Shedding mechanism
US2941551A (en) * 1958-01-09 1960-06-21 Lees & Sons Co James Semi-oriental jacquard and method

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3835895A (en) * 1972-04-11 1974-09-17 Verdol Sa Loom jacquards of the double-lift type
US3967652A (en) * 1973-07-06 1976-07-06 Staubli Ltd. Spring hook for the harness pull of a double-lift open-shed jacquard machine
US4023598A (en) * 1975-01-31 1977-05-17 Sulzer Brothers Limited Jacquard lifting wire
US4060101A (en) * 1975-07-10 1977-11-29 Firma Oskar Schleicher Double lift, open shed Jacquard loom
US4067363A (en) * 1975-07-25 1978-01-10 Firma Grosse Webereimaschinen Gmbh Shedding device for weaving looms, in particular for double-lift open-shed jacquard machines
US4041987A (en) * 1976-08-23 1977-08-16 Sulzer Brothers Limited Jacquard machine equipped with lifting wires and stationary arresting blades
US4530380A (en) * 1983-04-12 1985-07-23 Fa. Oskar Schleicher Single-leg hook for a double lift open shed Jacquard loom

Also Published As

Publication number Publication date
BE708399A (es) 1968-05-02
GB1139109A (en) 1969-01-08
CH484303A (de) 1970-01-15
FR1550691A (es) 1968-12-20
ES343109A1 (es) 1968-08-16

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