US3730232A - Dobby with a device for moving all heald frame into the same position - Google Patents

Dobby with a device for moving all heald frame into the same position Download PDF

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Publication number
US3730232A
US3730232A US00146867A US3730232DA US3730232A US 3730232 A US3730232 A US 3730232A US 00146867 A US00146867 A US 00146867A US 3730232D A US3730232D A US 3730232DA US 3730232 A US3730232 A US 3730232A
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United States
Prior art keywords
control arm
wedge
drive shaft
movement
improvement according
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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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US00146867A
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English (en)
Inventor
W Kleiner
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Staeubli AG
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Staeubli AG
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Publication date
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03C—SHEDDING MECHANISMS; PATTERN CARDS OR CHAINS; PUNCHING OF CARDS; DESIGNING PATTERNS
    • D03C1/00—Dobbies

Definitions

  • the invention relates to a dobby with a device for moving all heddle frames of a Jacquard loom to the same height, in which machine the heddle frame drive on one hand is controlled by needles which read a pattern card and on the other hand the heddle frames are moved by an eccentric ring which is arranged on a continuously or discontinuously rotating shaft. On such ring there is positioned a connecting rod connected to the heddle frame, whereby a wedge of the eccentric ring engages according to a preselected pattern either the shaft or the nonrotating connecting rod, and the movement and position of the wedge is controlled by a control arm, according to such pattern.
  • the device for synchronizing the heddle frames in a dobby of the described type is characterized according to the invention by a device which brings an arm immovably into a central position, and a device which blocks the arm in its extreme position for the lifted heddle frames.
  • the arm which transmits the control movement to the wedge of the coupling can, for example, have an opening which is engaged by a rotatable cam, whereby the width of the opening corresponds on one side to the largest expansion of the cam and on the other side to the smallest expansion of the cam plus the range of travel of the arm.
  • the axis of rotation of the cam is so arranged that, in case the first condition is met, the control arm directs the heddle frames into the central position. After the corresponding operation of the cam, the driving shaft of the dobby is rotated for 90 so that all heddle frames occupy the central position simultaneously.
  • the dobby has a rail which can be moved into and out of the sweep of the arm and which, in moved-in position, holds the arm in the control position for the heald shafts in lifted position.
  • a draw or push member with an interpositioned spring which gives way at an overloading of the control elements is arranged for this purpose in the draw or push path which is provided between the arm transmitting the control movement and the reading mechanism for the pattern card.
  • FIG. 1 is a schematic view of the coupling and the control mechanism of a dobby inupper shed position for the controlled heald shaft and disengaged vvedge,
  • FIG. 2 is the same view with a controlled dobby and half engaging wedge in the driving shaft for achieving the central position of the heal-d shaft from the controlled upper shed position;
  • FIG. 3 is the same view with a controlled dobby and half engaging wedge in the driving shaft for achieving the central position of the heald shaft from the controlled lower shed position;
  • FIG. 4 is the same view with a controlled dobby for the synchronization of all heald shafts into the upper shed position.
  • the pattern card 2 which serves for controlling the heddle frames 20A is moved by the cylinder 1.
  • the control opening 3 is read by the reading needles 4, 4 by urging the supports 5, 5' of the needles by means of springs 6, 6' away from the stationary block 23 and toward the pattern card. If no control opening 3 appears in the pattern card, the needle 4, 4' rides on the card 2 and the rocking lever 7, 7' swings past the nose 24, 24 of the support 5, 5. However, if an opening 3 appears in the control card 2, the needle moves a small distance into the opening under the pressure of the spring 6, 6',which causes the nose 24, 24' to reach the field of traverse of the lever 7, 7' and the rocking lever 7, 7 then moves the support 5, 5 through the nose 24, 24'.
  • the support 5, 5' acts through the tension element 8 and the compensating spring 9 to pull the control arm 10 downwardly against the force of the spring 12.
  • the force of the compensating spring 9 must be greater than the force of the spring 12 holding back the control arm.
  • the reading needles 4, 4' with the supports 5, 5 and the members engaging thereon are called the reading-in mechanism V.
  • the control arm 10 is pivotably supported on the axis 25 and has an opening 26 in which the driving shaft 15 of the dobby is positioned.
  • the edge 14 of the opening projects axially in the manner of a collar and engages the groove 27 of and is received in a wedge 13 where it serves as a controlling cam.
  • the wedge 13 is supported radially movably in the eccentric ring 28 and can engage either one of the recesses 29 of the driving shaft 15 or it may engage one of the zones 30, 30' between the ends of the resilient guide rails 16, 16.
  • the connecting rod 18 is also slidingly positioned on the eccentric ring 28 which in turn is supported on the driving shaft 15.
  • Said connecting rod 18 converts during rotation of the coupled eccentric ring with the driving shaft the rotational movement of the shaft into a translatory movement for the heddleframe.
  • the guide 19 holds the connecting rod 1'8 against a rotation.
  • the tension member 20 extending to the heddle frame 20A engages the guided end of the connecting rod 18.
  • Four pins 31 are arranged on the connecting rod 18 which pins are used through the slots 17 as guide and stops for the guide rails 16.
  • FIG. 3 illustrates the same control of the arm 10 with the cam 32 wherein the heddle frame is, however, can be brought from the lower shed position into the central position by rotating the driving shaft 15 for 90.
  • the wedge 13 will engage both the recess 29 and also the zone 30 and can thereafter follow the rotation of the shaft 15 for 90 without damage only if the guide rail 16' can yield.
  • the rotatable cam 32 is positioned in a notch 38 in the end of the arm 10.
  • the largest longitudinal dimension of the cam corresponds to the width of the opening 38, and the latter corresponds at least to the sweep required for the control plus the thickness of the cam 32.
  • the device In order that through the rotation of the shaft 15 all heddle frames are controlled by the illustrated dobby, reach the upper shed position and remain there, the device has the blocking bar 39. Same is arranged in such a manner that it can be moved into the notch 38 of the control arm 10 when the control arm 10 is released by the reading-in mechanism V and pulled up by the spring 12 illustrated position in FIG. 4 as illustrated by dashed lines in FIG. 1. In this manner the arm 10 is blocked. If, as this is illustrated in FIG. 4, the wedge coupling is in the control position for the lower shed position of the heddle frame then the wedge 13 is rotated along with the shaft 15 during its rotation whereby now, however, the wedge 13 is slowly pulled out of the recess 29.
  • the resiliently flexible guide rail 16' functions and yields until the wedge engages the zone 30, the shaft 15 in this case being rotated clockwise. Thus, one reaches the position of the actual wedge coupling according to FIG. 1. Any further rotation of the driving shaft 15 remains without any effect on the coupling and therewith also on the position of the heald shafts in the upper shed position.
  • This safety means has according to FIG. 1 the following structure:
  • the draw member consists of two parts.:At the head of the rod 40 there is provided the plate 41 on which the coil spring 9 surrounding the rod 40 is supported. The whole unit is enclosed by the housing of the draw parts 46, 47 whereby the spring 9 is supported on the housing base.
  • a connecting rod having means defining an opening therein and adapted to rotatably receive said eccentric ring therein and wedge means radially movable toward and away from said drive shaft under control of a pattern card reading mechanism for selectively connecting said eccentric ring to said drive shaft, the improvement comprising:
  • cam device adapted to move between first and second positions and further adapted to engage said wedge means in said first position to maintain said wedge means in a central position and, when in said second position, preventing said radially outward movement while permitting a radially inward movement;
  • blocking means adapted to move between third and fourth positions, said blocking means engaging said wedge means when in said third position to prevent a radially inward movement and, when in said fourth position, permitting a radially inward movement.
  • said wedge means comprises a wedge radially slidably mounted on said eccentric ring, a movably supported control arm having an opening therethrough larger in diameter than said drive shaft and receiving said drive shaft, the axis of said opening being perpendicular to the direction of movement of said control arm and connecting means for connecting said control arm to said wedge whereby a movement of said control arm effects a radially slidable movement of said wedge; and
  • cam device and said blocking means are adapted to engage said control arm.
  • control arm includes pivot means for pivotally supporting said control arm.
  • control arm has means defining an outwardly opening notch in the end thereof remote from said pivot means;
  • cam device is adapted to be received in said notch.
  • said cam device is larger in one dimension than in the other, said larger dimension being of a sufficient size to occupy the width of said notch when rotated to said first position to maintain said control arm in said control position, the smaller dimension occupying only a portion of said notch but preventing said radially outward movement while permitting said radially inward movement of said control arm.
  • said pattern card reading mechanism includes second resilient means responsive to an overloading of said control arm to prevent damage to said control arm when said cam device is in said first position and, alternatively, said blocking means is in said third position.
  • said second resilient means comprises a housing member secured to said control arm, plate means movably mounted in said housing and connected at periodic intervals with the reading means of said pattern card reading mechanism and a spring connected between said movable plate means and said housing member.
  • a cam device adapted to move between first and second positions and further adapted to engage said wedge means in said first position to maintain said wedge means in a central position and, when in said second position, preventing said radially outward movement while permitting a radially inward movement.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US00146867A 1970-05-29 1971-05-26 Dobby with a device for moving all heald frame into the same position Expired - Lifetime US3730232A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH803570A CH510148A (de) 1970-05-29 1970-05-29 Schaftmaschine mit einer Vorrichtung zur Steuerung aller Schäfte in die gleiche Stellung

Publications (1)

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US3730232A true US3730232A (en) 1973-05-01

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ID=4334135

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Application Number Title Priority Date Filing Date
US00146867A Expired - Lifetime US3730232A (en) 1970-05-29 1971-05-26 Dobby with a device for moving all heald frame into the same position

Country Status (8)

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US (1) US3730232A (enExample)
JP (1) JPS4841110B1 (enExample)
CH (1) CH510148A (enExample)
CS (1) CS160141B2 (enExample)
ES (1) ES391613A1 (enExample)
FR (1) FR2093747A5 (enExample)
GB (1) GB1354904A (enExample)
SU (1) SU396028A3 (enExample)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2463213A1 (fr) * 1979-08-16 1981-02-20 Staeubli Ag Ratiere a unites de levage rotatives
US4326563A (en) * 1978-09-22 1982-04-27 Maschinenfabrik Carl Zangs Aktiengesellschaft Control for a dobby mechanism
US4493346A (en) * 1981-01-09 1985-01-15 Textilma Ag Coupling arrangement usable in a textile machine
US4497346A (en) * 1980-09-12 1985-02-05 Sulzer Brothers Limited Clutch arrangement for controlling a heddle of a weaving machine
US4614211A (en) * 1983-06-16 1986-09-30 Staeubli Ltd. Dobby
US10344407B2 (en) * 2016-10-18 2019-07-09 Wowwee Group Ltd. Interactive loom
US11535962B2 (en) * 2020-05-21 2022-12-27 Raytheon Technologies Corporation Weaving assembly and method of using

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE791170A (fr) * 1972-02-17 1973-03-01 Amigues Lucien Perfectionnements aux ratieres pour machines a

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256644A (en) * 1917-01-20 1918-02-19 Peter Barlow Dobby used in looms for weaving.
US3180366A (en) * 1961-03-07 1965-04-27 Staubli Geb & Co Shed forming device for looms
FR1405184A (fr) * 1964-08-28 1965-07-02 Staubli Geb & Co Commande de lame pour métiers à tisser
US3207186A (en) * 1962-03-19 1965-09-21 Staubli Geb & Co Control mechanism in dobbies for controlling the heald frames in a loom
GB1089821A (en) * 1964-01-21 1967-11-08 Robert Staubli Loom dobby
US3468347A (en) * 1966-10-05 1969-09-23 Mecaniques Verdol Soc Heddle frame actuating gearing for looms
US3554238A (en) * 1967-04-25 1971-01-12 Staeubli Ag Dobbies

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256647A (en) * 1913-11-24 1918-02-19 Joseph Baudot Rotary explosion-motor.
FR1305638A (fr) * 1961-09-15 1962-10-05 Staubli Geb & Co Dispositif de formation de la foule pour métiers à tisser

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1256644A (en) * 1917-01-20 1918-02-19 Peter Barlow Dobby used in looms for weaving.
US3180366A (en) * 1961-03-07 1965-04-27 Staubli Geb & Co Shed forming device for looms
US3207186A (en) * 1962-03-19 1965-09-21 Staubli Geb & Co Control mechanism in dobbies for controlling the heald frames in a loom
GB1089821A (en) * 1964-01-21 1967-11-08 Robert Staubli Loom dobby
FR1405184A (fr) * 1964-08-28 1965-07-02 Staubli Geb & Co Commande de lame pour métiers à tisser
US3468347A (en) * 1966-10-05 1969-09-23 Mecaniques Verdol Soc Heddle frame actuating gearing for looms
US3554238A (en) * 1967-04-25 1971-01-12 Staeubli Ag Dobbies

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4326563A (en) * 1978-09-22 1982-04-27 Maschinenfabrik Carl Zangs Aktiengesellschaft Control for a dobby mechanism
FR2463213A1 (fr) * 1979-08-16 1981-02-20 Staeubli Ag Ratiere a unites de levage rotatives
US4367770A (en) * 1979-08-16 1983-01-11 Staeubli Ltd. Rotational dobby
US4497346A (en) * 1980-09-12 1985-02-05 Sulzer Brothers Limited Clutch arrangement for controlling a heddle of a weaving machine
US4493346A (en) * 1981-01-09 1985-01-15 Textilma Ag Coupling arrangement usable in a textile machine
US4614211A (en) * 1983-06-16 1986-09-30 Staeubli Ltd. Dobby
US10344407B2 (en) * 2016-10-18 2019-07-09 Wowwee Group Ltd. Interactive loom
US11535962B2 (en) * 2020-05-21 2022-12-27 Raytheon Technologies Corporation Weaving assembly and method of using
US20230121696A1 (en) * 2020-05-21 2023-04-20 Raytheon Technologies Corporation Weaving assembly and method of using
US11873589B2 (en) * 2020-05-21 2024-01-16 Rtx Corporation Weaving assembly and method of using

Also Published As

Publication number Publication date
ES391613A1 (es) 1974-08-01
CH510148A (de) 1971-07-15
GB1354904A (en) 1974-06-05
JPS4841110B1 (enExample) 1973-12-04
SU396028A3 (enExample) 1973-08-28
CS160141B2 (enExample) 1975-02-28
FR2093747A5 (enExample) 1972-01-28
DE2036645A1 (de) 1971-12-09

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