US3459236A - Dobby machines - Google Patents

Dobby machines Download PDF

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Publication number
US3459236A
US3459236A US701198A US3459236DA US3459236A US 3459236 A US3459236 A US 3459236A US 701198 A US701198 A US 701198A US 3459236D A US3459236D A US 3459236DA US 3459236 A US3459236 A US 3459236A
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US
United States
Prior art keywords
hooks
attachment
hook
baulk
arrester
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
US701198A
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English (en)
Inventor
Marcel Favre
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 Staublic & Co
Staublic & Co Geb
Original Assignee
Staublic & Co Geb
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 Staublic & Co Geb filed Critical Staublic & Co Geb
Application granted granted Critical
Publication of US3459236A publication Critical patent/US3459236A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • D03C1/14—Features common to dobbies of different types
    • D03C1/26—Facilitating engagement of lifting-hooks with draw-knives

Definitions

  • each of the arrester hooks is spring biased toward the respective attachment hook or pull member and stops are provided on the baulk to limit pivotal movement of the attachment hooks by the springs.
  • This invention relates to dobby machines having means for controlling and operating the heald shafts.
  • attachment hooks of the baulks and levers can become disengaged because the sudden arresting of the heald shafts reacts through the reciprocating members, jack levers and baulks on the attachment hooks to disengage them from the arrester hooks.
  • the arrangement according to the invention comprises a baulk with attachment hooks at its ends, which cooperate with arrester hooks or pull members and with bars pushing the baulk ends or attachment hooks, each attachment hook having attached to it one end of a spring, the other end of which is attached to the baulk or to another hook of the same baulk, so that when the connection of the hooks is released, the tip of the attachment hook follows the tip of the arrester hook or pull member thus rendering impossible an undesired disconnection.
  • the springs may be tension or compression springs or also spiral springs.
  • FIG. 1 shows diagrammatically in side elevation the arrangement of the mechanism for control and movement of a shaft
  • FIGS. 2 and 3 are similar partial views showing modifications.
  • the control is effected by means of a punched sheet or card 1 which is driven by the card cylinder 2 and cooperates with reading needles 16.
  • the pulling needles 3 are actuated by reciprocating bars 4, whereby the positions of actuating members shown as arrester hooks 5 are controlled.
  • the hooks 5 are loosely mounted on stationary rods 6 and are acted upon by tension springs 7.
  • the heald shaft which is not shown in the drawings, is moved by a jack-lever 8 which is rockably mounted on a stationary shaft 9 and to which the pull-member A to the heald shaft is attached.
  • the jack-lever 8 is pivotally connected at 20 to the center of a baulk 10 which has at each end an attachment hook 11.
  • Two bars 12 carry out toand-fro swinging movements and push the attachment hooks 11 alternately into an engagement position relative to the arrester hooks 5. In the position illustrated, both arrester hooks are in the engagement position, and the attachment hooks 11 are held in the engaged position.
  • the upper hook 5 has dropped into the attachment hook 11 which has been pushed by the upper bar 12, while the lower arrester hook 5 was already engaged during the previous pick of the loom.
  • a pressure might be exerted by the jack-lever 8 on the baulk 10 which would result in loosening the grip of the hooks 5 0n the hooks 11, thus enabling a disengagement of the hook 5 from the hook 11 and a jump-back of the baulk onto the bar 12. This would result in a simultaneous dropping of the corresponding heald shaft.
  • a spring 13 is arranged between each attachment hook 11 and the baulk 10, tending to keep the tip 14 of the hook 11 in contact with the arrester hook 5 and to prevent disengagement.
  • stops 17 and 18 may be provided on the machine frame and the ends of the baulk, respectively.
  • the two tension springs 13 can be replaced by a single spring 13', with one end attached to each attachment hook 11, so as to cause the tips 14 of the attachment hooks to follow the arrester hooks 5.
  • tension springs compression springs, or spiral springs 13" wound around the pivots 15 of the attachment hooks as illustrated in FIG. 3 can be used.
  • controlling and operating means comprising a jack-lever connected to said heald shaft, a baulk pivotally connected to said jack-lever, an attachment hook pivotally mounted on each end of said baulk, arresting members selectively engageable with said attachment hooks, said jack-lever being biased to pull said attachment hooks away from said arresting members, spring means biasing said attachment hooks to swing about their pivot relative to said baulk in a direction toward said arresting members, means for limiting movement of said attachment hooks relative to said baulk by said spring means, actuating members periodically and alternately engageable with said attachment hooks to position said hooks and said baulk, pattern controlled means for moving said arresting members selectively into and out of position to engage said attachment hooks when engaged by said actuating members, said spring means yieldably holding said attachment hooks in engagement with said arresting members When said arresting members are in hook-engaging position and said attachment hooks are not engaged by said actuating means so that,
  • said spring means comprises tension springs each having one end attached to the baulk and the other end attached to the respective attachment hook.
  • said spring means comprises a single tension spring having its ends attached respectively to said attachment hooks.
  • said spring means comprises a spiral spring arranged around the pivot of each of said attachment hooks respectively.
  • said limiting means comprises stops provided on the baulk for limiting pivotal movement of said hooks by said spring means.
  • arresting members comprise arrester hooks rockable about stationary supports.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Springs (AREA)
US701198A 1967-01-30 1968-01-29 Dobby machines Expired - Lifetime US3459236A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH131967A CH464103A (de) 1967-01-30 1967-01-30 Anordnung an Schaftmaschinen die zur Steuerung und Bewegung der Schäfte von Webstühlen dient

Publications (1)

Publication Number Publication Date
US3459236A true US3459236A (en) 1969-08-05

Family

ID=4207651

Family Applications (1)

Application Number Title Priority Date Filing Date
US701198A Expired - Lifetime US3459236A (en) 1967-01-30 1968-01-29 Dobby machines

Country Status (6)

Country Link
US (1) US3459236A (ru)
BE (1) BE709799A (ru)
CH (1) CH464103A (ru)
DE (1) DE1293095B (ru)
FR (1) FR1554192A (ru)
GB (1) GB1185772A (ru)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602265A (en) * 1968-04-02 1971-08-31 Staeubli Ag Dobby machine
US4120327A (en) * 1976-05-28 1978-10-17 Staeubli Ltd. Double-lift dobby
US4947899A (en) * 1985-04-24 1990-08-14 Fimtessile Fabbrica Italiana Macchinario Tessile S.P.A. Hook structure for negative dobby looms

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2705506A (en) * 1953-01-26 1955-04-05 Staubli Geb & Co Devices for locking the draw hooks in dobbies
US2751938A (en) * 1952-09-02 1956-06-26 Staubli Geb & Co Dougle lift shedding motion
AT219515B (de) * 1957-12-14 1962-02-12 Sdruzeni Podniku Textilniho St Vertikale Doppelhubschaftmaschine
US3225792A (en) * 1962-12-15 1965-12-28 Piazzolla Giovanni Dobby, specially adapted for speedy looms
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies
US3378038A (en) * 1965-04-06 1968-04-16 Elitex Zavody Textilniho Control system for a dobby machine

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2751938A (en) * 1952-09-02 1956-06-26 Staubli Geb & Co Dougle lift shedding motion
US2705506A (en) * 1953-01-26 1955-04-05 Staubli Geb & Co Devices for locking the draw hooks in dobbies
AT219515B (de) * 1957-12-14 1962-02-12 Sdruzeni Podniku Textilniho St Vertikale Doppelhubschaftmaschine
US3225792A (en) * 1962-12-15 1965-12-28 Piazzolla Giovanni Dobby, specially adapted for speedy looms
US3378038A (en) * 1965-04-06 1968-04-16 Elitex Zavody Textilniho Control system for a dobby machine
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3602265A (en) * 1968-04-02 1971-08-31 Staeubli Ag Dobby machine
US4120327A (en) * 1976-05-28 1978-10-17 Staeubli Ltd. Double-lift dobby
US4947899A (en) * 1985-04-24 1990-08-14 Fimtessile Fabbrica Italiana Macchinario Tessile S.P.A. Hook structure for negative dobby looms

Also Published As

Publication number Publication date
BE709799A (ru) 1968-05-30
FR1554192A (ru) 1969-01-17
DE1293095B (de) 1969-04-17
CH464103A (de) 1968-10-15
GB1185772A (en) 1970-03-25

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