US3169554A - Baulks and hooks for dobbies - Google Patents

Baulks and hooks for dobbies Download PDF

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Publication number
US3169554A
US3169554A US157353A US15735361A US3169554A US 3169554 A US3169554 A US 3169554A US 157353 A US157353 A US 157353A US 15735361 A US15735361 A US 15735361A US 3169554 A US3169554 A US 3169554A
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US
United States
Prior art keywords
baulk
bearing plate
abutment
hooks
bearing
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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US157353A
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English (en)
Inventor
Schwarz Rudolf
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
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 Staubli Geb & Co filed Critical Staubli Geb & Co
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Publication of US3169554A publication Critical patent/US3169554A/en
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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
    • D03C1/06—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—Program-controlled heald frame movement
    • D03C2700/0133—Program-controlled heald frame movement with mechanical transmission
    • D03C2700/0138—Program-controlled heald frame movement with mechanical transmission using hooks or lifters
    • D03C2700/0155—Double-lift mechanisms
    • D03C2700/0172—Constructional details

Definitions

  • the invention relates to baulks with draw hook in dobbies.
  • baulks of dobbies have on both ends a bearing socket into each of which engages the corresponding head of a draw hook. Moreover each end of the baulk has an abutment which contacts an abutment rail.
  • Such an arrangement consisting of baulks, draw hooks and abutment rail is in general use with double lift dobbies.
  • the shaft associated with one such group of baulks and hooks is lifted at any time in that a hook with the associated end of a balance is pulled forward, while the abutment face of the other end of the baulk abuts its associated abutment rail.
  • the abutment faces of the baulk slide over the abutment rails and the heads of the hooks turn in the bearing sockets of the ends of the baulks.
  • baulk arrangement for dobbies comprising in combination: a baulk, at least one bearing plate pivotally mounted on said baulk and having a joint and a rear abutment face, a draw hook articulated to said bearing plate at said joint, a draw knife engaged by said draw hook, and an abutment rail in operation abutted by said abutment face.
  • baulk and bearing plate The connection between baulk and bearing plate is effected conveniently by means of a pivot pin fixed to the end of the baulk.
  • the bearing plate is designed according to the invention to perform also the function of abutting the abutment rail, for which purpose it has an abutment face.
  • the two pivot points and the abutment face of the bearing plates are so arranged relative to one another that the abutment face when abutting the abutment rail is in a position at least substantially parallel to the abutment face of the abutment rail, and accordingly comes into contact therewith with its entire face.
  • the abutment face of the bearing plate stands substantially perpendicular to the straight connecting line between the point of engagement of the draw hook on the draw knife and the pivot point of the bearing plate on the baulk, moreover the abutment face of the bearing plate lies approximately parallel to the abutment face of the abutment rail when making contact with it.
  • the abutment face of the bearing plate may be provided with at least one roller, preferably with two anti-friction rollers or ball bearings.
  • FIG. 1 shows the functional elements of a baulk according to the invention
  • FIGS. 2-9 each show in side elevation an embodiment as an example of the connection between baulk, bearing plate and draw hook.
  • FIG. 6A is a partial cross section taken along line VIA-VIA of FIG. 6.
  • the baulk 1 has on each of its two ends a pivot pin 2 on which a bearing plate 3 is pivotally mounted, which has in turn a bearing socket 4 for the draw hook 5.
  • the rear abutment face or abutment means of the bearing plate 3 is denoted by 6.
  • the semi-lifting lever or jack-lever 21 engages the center pin 7 of the baulk 1 and turns about a pivot shaft A at its lower por tion.
  • the member 21 is in active connection at its upper end B through 'all members, diagrammatically indicated by a dash-dot arrow, with the shaft of a loom (not shown).
  • the baulk 1 consists either of two halves positioned parallel to one another and connected with each other by the pins 2 and 7, or it is made out of one piece which is contoured 'on-both ends.
  • the articulations or joint pins 2 between the baulk 1 and the bearing plates 3 take pulling forces and also prevent the' engaging parts from mutually-'twisting, while the socket joints or bearing sockets 4 serve mainly for the transmission of pulling forces from the draw hooks 5 to the bearing plates 3 and vice versa. Only insignificant pivotal movements occur at these joints. .
  • the draw hooks 5 engage pull blades P at 23.
  • the guidance of the draw hooks 5 is secured in the baulks by means of the bearing plates 3 and pins 2.
  • the bearing or socket joint 4 of the plate 3 is formed hook-shaped and partly embraces the head of the draw hook 5.
  • FIG. 2 also, as in most of the subsequent figures, the lateral guidance is secured by the divided ends of the bearing plate 103.
  • the engagement of the draw hook with plate 103 takes place along bearing face 4a, which may be plane or cambered.
  • the abutment face 106 engages a stop rail in a manner similar to that of face 6 and rail 20 in FIG. 1.
  • the draw hook engages a draw knife P near its other end, in a manner analogous to the engagement at 23 of FIG. 2.
  • the boundary face 10 of the draw hook 105 opposite the bearing face 4 has a slight clearance with respect to the bearing plate 103, so that the hook 105 can be raised without difficulty at its forward end by the draw knife.
  • the bearing plate 203 embraces the rear end of the draw hook 205.
  • the abutment face 206 does not engage a rail 20, but this function is performed by two rollers 6', the axes of which are parallel to the pivot axis of the baulk.
  • the end of draw hook 205 forms a bearing face and joint at 204a in the bearing plate 203.
  • the rear ends of the draw hooks 305 and 603 embrace the respective bearing plates 303 and 605.
  • the pivot points of the baulk and bearing plate and of draw hook and bearing plate coincide, such as also in FIGS. and 8, where the pins 402 and 702 serve as bearings on the respective baulk for both components, i.e. for the draw hook 405 or 705 and for the bearing plate 403 or 703.
  • the movement of lifting the draw hook or the rotatability of the bearing plate is limited by stop pins 8, and in FIG. 8 by guides or stops 9.
  • the swinging motion of the pull hook 705 is limited by the two stops 9. These stops form part of the plate 703.
  • the bearing plate 503 consists of two parallel parts which are connected to one another by a pin 2'.
  • the end 1' of the baulk reaches partially round the pin 2'.
  • FIG. 6A such a partial straddling of the baulk 1' by the pin 2' is possible because the draw hook 505, when engaged by the draw knife, is continuously under tension in opposition to the pulling tension against the baulk 1 or 1.
  • the articulation 4 for the draw hook 5 likewise consists of a pin. This arrangement doesnot alter the function performance as compared with the other embodiments.
  • the abutment faces 506, 606, 706 and 806 in the embodiments of FIGS. 6-9 each serve as abutment faces in a manner analogous to face 6 of FIG. 1.
  • the ends 801 of the baulk may have two pivot pins 802 and 4".
  • the bearing or journal means 2, 102, 202, 302, 402, 602, 703, 4" as a self-lubricating bearing.
  • a baulk arrangement for dobbies comprising in combination: a baulk, at least one bearing plate provided with journal means articulately mounting said plate relative to said baulk, said plate having a joint and rear abutments, a draw hook pivotally articulated to said bearing plate at said joint, and a stationary abutment rail arranged for engagement by said rear abutment means, the pivotal axis of said bearing plate at said journal means coinciding with the pivot axis of said draw hook at said joint.
  • a baulk arrangement for dobbies comprising in combination: a baulk, at least one bearing plate provided with journal means articulately mounting said plate relative to said baulk, said plate having a joint and rear abutment means, a draw hook pivotally articulated to said bearing plate at said joint, and a stationary abutment rail arranged for engagement by said rear abutment means, said rear abutment means comprising at least one roller having a journal axis parallel to'the pivot axis of said journal means, said roller protruding rearwardly beyond said bearing plate.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Chain Conveyers (AREA)
US157353A 1960-12-08 1961-12-06 Baulks and hooks for dobbies Expired - Lifetime US3169554A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH1388160A CH389524A (de) 1960-12-08 1960-12-08 Mittels Balance und Zughaken gebildetes Schaftantriebsgestänge in Schaftmaschinen

Publications (1)

Publication Number Publication Date
US3169554A true US3169554A (en) 1965-02-16

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Application Number Title Priority Date Filing Date
US157353A Expired - Lifetime US3169554A (en) 1960-12-08 1961-12-06 Baulks and hooks for dobbies

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US (1) US3169554A (de)
CH (1) CH389524A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies
US3384124A (en) * 1967-02-23 1968-05-21 John B. Sherrill Swiveled dobby connector
US4305432A (en) * 1979-02-13 1981-12-15 Staeubli Ltd. Positive dobby

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453680A (en) * 1891-06-09 Double-lift open-shed dobby
US729627A (en) * 1903-01-07 1903-06-02 Mason Machine Works Dobby mechanism for looms.
US1425413A (en) * 1921-05-07 1922-08-08 Victor W Page Adjustable foot pedal
US1941005A (en) * 1931-07-03 1933-12-26 Crompton & Knowles Loom Works Dobby lever for looms
US2167052A (en) * 1937-09-24 1939-07-25 Crompton & Knowles Loom Works Dobby knife guide

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US453680A (en) * 1891-06-09 Double-lift open-shed dobby
US729627A (en) * 1903-01-07 1903-06-02 Mason Machine Works Dobby mechanism for looms.
US1425413A (en) * 1921-05-07 1922-08-08 Victor W Page Adjustable foot pedal
US1941005A (en) * 1931-07-03 1933-12-26 Crompton & Knowles Loom Works Dobby lever for looms
US2167052A (en) * 1937-09-24 1939-07-25 Crompton & Knowles Loom Works Dobby knife guide

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285291A (en) * 1965-10-01 1966-11-15 Staubli Geb & Co Drive-mechanism in double lift dobbies
US3384124A (en) * 1967-02-23 1968-05-21 John B. Sherrill Swiveled dobby connector
US4305432A (en) * 1979-02-13 1981-12-15 Staeubli Ltd. Positive dobby

Also Published As

Publication number Publication date
CH389524A (de) 1965-03-15

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