US3680601A - Improvements in or relating to draw hooks of a dobby - Google Patents

Improvements in or relating to draw hooks of a dobby Download PDF

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Publication number
US3680601A
US3680601A US49307A US3680601DA US3680601A US 3680601 A US3680601 A US 3680601A US 49307 A US49307 A US 49307A US 3680601D A US3680601D A US 3680601DA US 3680601 A US3680601 A US 3680601A
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United States
Prior art keywords
reading
needle
movement
lever
mechanism according
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
US49307A
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English (en)
Inventor
Joseph Palau
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.)
Staeubli AG
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Staeubli AG
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Filing date
Publication date
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Publication of US3680601A publication Critical patent/US3680601A/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
    • D03C1/14—Features common to dobbies of different types
    • D03C1/22—Needles; Needle boxes; Needle boards

Definitions

  • the invention relates to improvements in or relating to draw hooks of a dobby and has particular reference to a process for reading in of a perforated pattern card by means of reading needles and to the control, according to the pattern, of the draw hooks of the dobby, preferably of the Hattersley type, with an operating lever flexibly coupled to the reading needles thus affecting the position of the draw hooks, as also to a reading-in mechanism for carrying the process into effect.
  • the process in accordance with the invention is characterized in that the reading needles, when they fall in a hole of the pattern card, bring the operating lever within reach of a power drive which, without affecting the reading-in position of the reading needles, initiates amplified power control of the draw hooks through the operating lever.
  • FIG. 1 is a diagrammatic view of the construction of a double lift dobby
  • FIGS. 2 to 4 are detail views of the operating lever with the pusher in three different working positions.
  • FIG. 5 is a detail view of the pusher drive and the progressive mechanism for the reading needles.
  • FIG. 1 shows the motion mechanism of a double lift Hattersley system dobby with a baulk 8, two draw hooks 11 or 11' connected through a slide 6 and connecting 9 to the baulk 8, which after actuation by the to-and-fro moving knives 12 or 12' according to the pattern, are carried along the traverse in the guideways l3, 14 or 13', 14'.
  • the draw hooks which must-be attached to the draw knives are controlled by the pins 15 or 15' as is explained in copending patent application Serial No. 49308 of even date.
  • the pattern card 1 having holes to match the pattern runs over the card cylinder and is read in by reading needles 25, 25.
  • the operating lever is flexibly coupled to the rear end of the reading needles and consists of the connecting link 18, 18 and the double lever 17, 17 which is swivel mounted on the pivot 63, 63' and exerts pressure on the pin 15, 15.
  • a tension spring 20, 20' exerts pressure on the reading needle 25, which draws the reading needle against the card cylinder 26.
  • the lower needle 25 has not found a hole in the pattern card which means there is no call for the hook I] to be released from the notch 57 of the slotted guideway 13.
  • the pusher l9 executes its to-and-fro motion without any action on the snugs 64, 65 as the connecting link 18 stays in its fully raised position and snug 65 is outside its path of movement. This situation also obtains for the position shown chain dotted by FIGS. 3
  • the reading needle 25 brings a working part 18 within the path of movement of a positively operated driving element 19, which element on its return movement at the same time takes in hand the lifting out of the reading needle, while reading-in of the pattern card ensues merely through the force of the spring 20. Therefore the needle is not moved at its servicing end for readingin of the pattern card during the time there is a heald shaft motion.
  • the reading-in mechanism is practically independent of the actual shed forming device and can be interpolated as a unit assembly between the guideways.
  • a reading-in mechanism for controlling the draw hooks of a dobby having at least one reading needle mounted for movement toward and away from a perforated pattern card for controlling the condition of control means which govern the period of time that movement of a draw hook is to be eflected by a draw knife, the combination comprising:
  • articulated lever means connected between the end of said reading needle remote from said pattern card and said control means for controlling said movement of said draw hook
  • pusher means adapted to engage said articulated Y lever means during a period of time that said reading needle is engaging a perforation in said pattern card,'said pusher means moving said articulated lever means to efiect a change of condition of said control means to permit a movement of said draw hook by said draw knife, said pusher means being free of engagement with said articulated lever means during an alternate period of time that said reading needle is out of engagement with said perforation to thereby effect a prevention of movement of said draw hook by said draw knife.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Lock And Its Accessories (AREA)
  • Measuring Leads Or Probes (AREA)
  • Automatic Analysis And Handling Materials Therefor (AREA)
US49307A 1969-06-25 1970-06-24 Improvements in or relating to draw hooks of a dobby Expired - Lifetime US3680601A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH970669A CH509437A (de) 1969-06-25 1969-06-25 Verfahren zur Steuerung der Zughaken einer Schaftmaschine und Steuermechanismus zur Durchführung des Verfahrens

Publications (1)

Publication Number Publication Date
US3680601A true US3680601A (en) 1972-08-01

Family

ID=4354764

Family Applications (1)

Application Number Title Priority Date Filing Date
US49307A Expired - Lifetime US3680601A (en) 1969-06-25 1970-06-24 Improvements in or relating to draw hooks of a dobby

Country Status (6)

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US (1) US3680601A (de)
JP (1) JPS4822148B1 (de)
AT (1) AT300689B (de)
CH (1) CH509437A (de)
FR (1) FR2051331A5 (de)
GB (1) GB1320155A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848643A (en) * 1971-03-10 1974-11-19 Staeubli Ag Reading mechanism of a dobby
US4120327A (en) * 1976-05-28 1978-10-17 Staeubli Ltd. Double-lift dobby
CN101724953B (zh) * 2009-11-11 2011-04-27 常熟市常纺纺织机械有限公司 消极式多臂开口装置的拉钩快速复位机构

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2085459A (en) * 1935-08-03 1937-06-29 Saurer Ag Adolph Pattern mechanism for looms and the like
US2646080A (en) * 1952-05-21 1953-07-21 Crompton & Knowles Loom Works Paper indicated dobby
GB886310A (en) * 1959-04-01 1962-01-03 Saurer Ag Adolph A double-lift open-shed dobby
GB1008665A (en) * 1961-11-03 1965-11-03 Rueti Ag Maschf Improvements in or relating to looms
US3378038A (en) * 1965-04-06 1968-04-16 Elitex Zavody Textilniho Control system for a dobby machine
FR2005367A1 (de) * 1968-04-02 1969-12-12 Staubli Et Co
US3500873A (en) * 1967-04-27 1970-03-17 Staubli Geb & Co Apparatus for controlling the movement of a dobby jack lever in accordance with a pattern card
US3554238A (en) * 1967-04-25 1971-01-12 Staeubli Ag Dobbies

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2085459A (en) * 1935-08-03 1937-06-29 Saurer Ag Adolph Pattern mechanism for looms and the like
US2646080A (en) * 1952-05-21 1953-07-21 Crompton & Knowles Loom Works Paper indicated dobby
GB886310A (en) * 1959-04-01 1962-01-03 Saurer Ag Adolph A double-lift open-shed dobby
GB1008665A (en) * 1961-11-03 1965-11-03 Rueti Ag Maschf Improvements in or relating to looms
US3378038A (en) * 1965-04-06 1968-04-16 Elitex Zavody Textilniho Control system for a dobby machine
US3554238A (en) * 1967-04-25 1971-01-12 Staeubli Ag Dobbies
US3500873A (en) * 1967-04-27 1970-03-17 Staubli Geb & Co Apparatus for controlling the movement of a dobby jack lever in accordance with a pattern card
FR2005367A1 (de) * 1968-04-02 1969-12-12 Staubli Et Co

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3848643A (en) * 1971-03-10 1974-11-19 Staeubli Ag Reading mechanism of a dobby
US4120327A (en) * 1976-05-28 1978-10-17 Staeubli Ltd. Double-lift dobby
CN101724953B (zh) * 2009-11-11 2011-04-27 常熟市常纺纺织机械有限公司 消极式多臂开口装置的拉钩快速复位机构

Also Published As

Publication number Publication date
JPS4822148B1 (de) 1973-07-04
GB1320155A (en) 1973-06-13
AT300689B (de) 1972-08-10
DE1951023A1 (de) 1971-01-21
DE1951023B2 (de) 1973-02-01
CH509437A (de) 1971-06-30
FR2051331A5 (de) 1971-04-02

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