US3517703A - Heald control and drive mechanism for double lift dobbies - Google Patents

Heald control and drive mechanism for double lift dobbies Download PDF

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Publication number
US3517703A
US3517703A US740550A US3517703DA US3517703A US 3517703 A US3517703 A US 3517703A US 740550 A US740550 A US 740550A US 3517703D A US3517703D A US 3517703DA US 3517703 A US3517703 A US 3517703A
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US
United States
Prior art keywords
baulk
hook
bar
pulling
drive mechanism
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
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US740550A
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English (en)
Inventor
Rudolf Schwarz
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.)
Gebr Staubli & Co
Staubli Geb & Co
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Staubli Geb & Co
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Filing date
Publication date
Application filed by Staubli Geb & Co filed Critical Staubli Geb & Co
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Publication of US3517703A publication Critical patent/US3517703A/en
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Classifications

    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies
    • D03C1/06—Double-lift dobbies, i.e. dobbies in which separate draw-knives or equivalent operate on alternate picks
    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C2700/00—Shedding mechanisms
    • D03C2700/01—Shedding mechanisms using heald frames
    • D03C2700/0127—Programme-controlled heald frame movement
    • D03C2700/0133—Programme-controlled heald frame movement with mechanical transmission
    • D03C2700/0138—Programme-controlled heald frame movement with mechanical transmission using hooks or lifters
    • D03C2700/0155—Double-lift mechanisms
    • D03C2700/0166—Double-lift mechanisms of positively-driven type

Definitions

  • This invention relates to a heald control and drive mechanism comprising a baulk and attachment hooks for dobby machines of the Hattersley type, especially double lift dobbies.
  • Dob'bies of the Hatersley type have for each heald of the loom a baulk which is pivoted at its center to the heald-operated lever and at each end of the baulk there is an attachment hook, which according to the control setting is carried along by a pusher bar swinging to and fro, which involves the lifting of the heald into the raised position.
  • Doublelift dobbies are known in which the attachment hooks are in the form of double hooks with a positive hook attaching movement. This positive movement makes a faster operation of the machine possible, as the alternate engagement and disengagement with the one or the other pusher bar or with a stationary bar is not left to chance, but the time sequence is exactly known and can be controlled.
  • the freely movable baulk performs a swinging movement about the central attachment point of the jacklever, this point also performing a relative movement. According to whether during the alternate pulling movement of associated pusher bars, the one or the other or both ends of the baulk is or are driven, the position of the pivot points of the baulk ends changes with respect to the hooks. In the known dobbies of the Hattersley type, especially with simple hooks, the relatively great length of the hooks serves to compensate for these changes of position.
  • baulk end slides up and down on the stationary impact bar and on the stop beams, which causes wear due to friction.
  • the heald control and drive mechanism according to the invention is charterized by the feature that the articulated connection between the baulk and the attachment hook allows a rotational swinging movement as well as a straight line movement in the plane of the baulk.
  • the plate may, for example, have a bolt-like hub or projection with a slot extending transversely to the shaft axis and a sliding block arranged movably therein, the sliding block having a bore in which a bolt of one of the parts to be connected is swingably arranged while the 3,517,703 Patented June 30, 1970 other part to be connected is swingable on the bolt-like hub or projection.
  • Such arrangement can, for example, be used very advantageously in heald control and drive mechanisms having an attachment hook which is swingable with respect to the baulk and is constructed as a double hook, one hook of the double hook being capable of engaging the swinging, pulling and pushing ar and the other hook engaging the stationary impact or arrester bar.
  • FIG. 1 is a diagrammatic illustration of the mode of operation of a dobby machine of the Hattersley type with double hooks.
  • FIG. 2 shows in detail the arrangement of the baulk with the double hook in the position in which it is not drawn out.
  • FIG. 3 shows the same arrangement according to FIG. 2 in the drawn-out position.
  • FIG. 4 is a section on the line IVIV in FIG. 2, and
  • FIG. 5 is a section on the line VV in FIG 2.
  • the jack lever 2 which through the various connection bars 3 determines the position of the heald 4 is pivoted at the center of the baulk 1.
  • an attachment hook 5 is swingably arranged and according to its position comes into engagement with the arrester bar 6 or with the pulling and pushing bar 7 which swings to and fro about the axis 25 as indicated by the arrow A.
  • the pulling and pushing bar 7 draws a hook which is engaged with it forwards and pushes the end of the baulk back into its initial position by means of the plate 13.
  • the control device for the attachment hooks is the perforated pattern card 8 from which the reading needles 9 read off the pattern and the draw bars 10 which, according to their position, carry the connecting levers 11 with them.
  • FIGS 2 and 5 a section of the control and drive mechanism is shown in which the parts arranged at the two ends of the baulk are similar and therefore have the same reference numerals.
  • the baulk 1 consists of two spaced parallel plates between which the bolt 12 is arranged.
  • the attachment hook 5 is constructed as a double hook and comes into engagement according to its position with the arrester bar 6 (FIG. 2 below) or with the pulling and pushing bar 7 (FIG. 2 at the top).
  • the plate 13 Between the hook 5 and the baulk is the plate 13 hav ing a hub-like extension 14 on which the hook 5 is swingably mounted.
  • a slot 15 extending transversely to the shaft axis and in line with the bolt 12 of the baulk 1, which slot serves as a guide for the sliding block 16.
  • the block 16 serves as a bearing for the bolt 12 of the baulk 1.
  • the plate 13 has recesses 17 and autment surfaces 24 which are shaped to receive mating portions on the pulling and pushing bar 7 or the arrester bar 6.
  • a spring 18 bears on the plate 13 and tends to swing the attachment hook so as to engage with the pulling and pushing bar 7.
  • a bar 19 operates against the force of the spring 18 and is moved to and fro by a cam disc (not shown) on the drive shaft of the dobby.
  • the transmission of the control impulses derived from the pattern card 8 is effected by means of a lever 21 which is swingable on a shaft 20 which co-operates with the surface 22 of the hook 5.
  • the lever 21 remains out of range of engagement with the surface 22 (as shown in the upper part of FIG. 2).
  • the spring 1 8 now presses on the hook 5 until the hook engages the pulling and pushing bar 7. Since the plate 13 rests on the pulling and pushing bar 7 and on the hook 5, and also engages behind the arresting rail of the pulling and pushing bar, the attachment hook is guided without play during the whole of the drawing out movement of the pulling and pushing bar 7. As described, the hook which is not drawn out also rests without play on the arrester bar 6. These positionings act on the ends of the baulk free from play.
  • FIGS. 2 and 3 show that both the distances between the attachment hook centers and also their relative position have changed. This is one of the reasons for swingably mounting the hooks 5 on the projection 14 of the plate.
  • the bolt 12 can move away from the center of the hook 5 as is evident from the relative position of the bolt 12 and the corresponding hook 5 in FIG. 3.
  • a heald control and driv mechanism comprising; a baulk, a pair of movable pushing-and-pulling bars, a pair of stationary arrester bars, a pair of attachment hooks each mounted to selectively engage with one of said pushing-and-pulling bars and with one of said arrester bars, and means pivotally connecting each of said attachment hooks to said baulk for both pivotal movement relative to said baulk and translational movement in the plane of said baulk; said lastmentioned means comprising a plate having a hub-like projection on which said attachment hooks are pivotally mounted, a guide slot within said hub-like projection and extending transversely to the pivotal axis of said attachment hooks, and a slide block pivotally connected to said baulk and slidably positioned in said guide slot.
  • a heald control and drive mechanism comprising; a baulk, a pair of movable pushing-and-pulling bars, a pair of stationary arrester bars, a pair of attachment hooks each mounted to selectively engage with one of said pushing-and-pulling bars and with one of said arrester bars, means including a plate pivotally connecting each of said attachment hooks to said baulk for both pivotal movement relative to said baulk and translational movement in the plane of said baulk, said plate having recesses therein shaped to receive without play mating portions of said pushing-andpulling bars and said arrester bars when said pushingand-pulling bars and said arrester bars are engaged with said attachment hooks.
  • a dobby according to claim 4 including means for moving said attachment hooks against the force of said spring means into engagement with said arrester bars, and means for holding and locking said attachment hooks in engagement with said arrester bars.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US740550A 1967-06-27 1968-06-27 Heald control and drive mechanism for double lift dobbies Expired - Lifetime US3517703A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH911667A CH480463A (de) 1967-06-27 1967-06-27 Mittels Balance und Zughaken gebildetes Schaftantriebsgestänge in Schaftmaschinen

Publications (1)

Publication Number Publication Date
US3517703A true US3517703A (en) 1970-06-30

Family

ID=4348486

Family Applications (1)

Application Number Title Priority Date Filing Date
US740550A Expired - Lifetime US3517703A (en) 1967-06-27 1968-06-27 Heald control and drive mechanism for double lift dobbies

Country Status (6)

Country Link
US (1) US3517703A (OSRAM)
BE (1) BE717092A (OSRAM)
CH (1) CH480463A (OSRAM)
DE (1) DE1760394A1 (OSRAM)
FR (1) FR1604836A (OSRAM)
GB (1) GB1236412A (OSRAM)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884273A (en) * 1972-01-04 1975-05-20 Elitex Zavody Textilniho Dobby
JPS5115063A (ja) * 1974-07-26 1976-02-06 Yamada Dobby Seisakusho Kk Fukudodobiiki

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189312331A (en) * 1893-06-23 1894-04-28 James Hill Improvements in Shedding Mechanisms of Looms.
US1841923A (en) * 1929-07-26 1932-01-19 Stanley Works Dobby for looms
US2421599A (en) * 1945-09-26 1947-06-03 Jr Joseph D Cash Loom dobby
US2705506A (en) * 1953-01-26 1955-04-05 Staubli Geb & Co Devices for locking the draw hooks in dobbies
DE959899C (de) * 1951-12-13 1957-03-14 Erich Grosse Doppelhub-Offenfach-Gegenzug-Schaftmaschine
GB853856A (en) * 1957-08-01 1960-11-09 British Cotton Ind Res Assoc Improvements in or relating to looms for weaving
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB189312331A (en) * 1893-06-23 1894-04-28 James Hill Improvements in Shedding Mechanisms of Looms.
US1841923A (en) * 1929-07-26 1932-01-19 Stanley Works Dobby for looms
US2421599A (en) * 1945-09-26 1947-06-03 Jr Joseph D Cash Loom dobby
DE959899C (de) * 1951-12-13 1957-03-14 Erich Grosse Doppelhub-Offenfach-Gegenzug-Schaftmaschine
US2705506A (en) * 1953-01-26 1955-04-05 Staubli Geb & Co Devices for locking the draw hooks in dobbies
GB853856A (en) * 1957-08-01 1960-11-09 British Cotton Ind Res Assoc Improvements in or relating to looms for weaving
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3884273A (en) * 1972-01-04 1975-05-20 Elitex Zavody Textilniho Dobby
JPS5115063A (ja) * 1974-07-26 1976-02-06 Yamada Dobby Seisakusho Kk Fukudodobiiki

Also Published As

Publication number Publication date
BE717092A (OSRAM) 1968-12-02
DE1760394A1 (de) 1971-12-02
GB1236412A (en) 1971-06-23
FR1604836A (OSRAM) 1972-04-17
CH480463A (de) 1969-10-31

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