US3429344A - Shuttle-controlling apparatus for weaving looms - Google Patents

Shuttle-controlling apparatus for weaving looms Download PDF

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Publication number
US3429344A
US3429344A US578317A US3429344DA US3429344A US 3429344 A US3429344 A US 3429344A US 578317 A US578317 A US 578317A US 3429344D A US3429344D A US 3429344DA US 3429344 A US3429344 A US 3429344A
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United States
Prior art keywords
shuttle
piston
movement
lever
loom
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Expired - Lifetime
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US578317A
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English (en)
Inventor
Vladimir Svaty
Jan Bilek
Jiri Zlatohlavek
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.)
Elitex Zavody Textilniho
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Elitex Zavody Textilniho
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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D47/00—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms

Definitions

  • the present invention relates to Weaving looms.
  • the present invention relates to a method and apparatus for controlling the operation of a shuttle of a weaving loom.
  • the present invention deals with that part of the loom mechanism which provides for reliable determination of all of the desired operating positions of the shuttle when it reaches the end of one of its strokes of movement and when it is to be driven along its next stroke of movement.
  • This part of the loom includes structure for damping the movement of the shuttle at the end of one of its strokes, for sensing the timing of the arrival of the shuttle at the end of one of its strokes, for returning the shuttle from the end of one of its strokes to the beginning of its next stroke in preparation for movement of the shuttle again through the shed, and finally for reliably starting the drive of the shuttle along its next stroke at the proper instant.
  • the device which provides for movement of the shuttle also reliably controls the remaining essential operating functions such as, for example, the damping of the movement of the shuttle upon arrival thereof at the end of one of its strokes, the control of the damping structure, the sensing of the timing of the arrival of the shuttle at the end of a stroke thereof, and finally, the positioning of the shuttle from the end of one of its strokes into the proper position for beginning the next stroke thereof, and the like.
  • the invention resides mainly in a modification of a basically known loom arrangement in which a first mechanism brakes the movement of a shuttle at one end of the path thereof through the shed, a second ymechanism senses the timed arrival of the shuttle at this end portion and stops the loom if the shuttle is not sensed, and a third mechanism controls the drive system for returning the shuttle to the other end of its path.
  • a brake member of the rst mechanism is movably mounted on a support for movement toward and away from a shuttle engaging position in which the brake member intercepts the movement of the shuttle and moves with the shuttle while the same is being braked.
  • a sensing member of the second mechanism is mounted on the same support for movement toward and away from the end portion of the shuttle path, and means are provided for stopping the loom in response to a predetermined movement of the sensing member toward that end portion.
  • the third mechanism includes a catch member which is guided on the same support between respective positions in which the catch member restrains and releases the shuttle drive.
  • An operating member is connected to the brake member, sensing member, and catch member for joint movement and constitutes the sole connection between the three mechanisms and the drive shaft of the loom which is connected to the operating member by a cam system causing the operating member to move back and forth when the shaft rotates.
  • FIG. 1 is a partly sectional, schematic elevation of one possible embodiment of a structure according to the invention, the structure which is sectionally illustrated in FIG. 1 having the section thereof taken in a plane which contains the axis of the shuttle driving structure;
  • FIGS. 2-9 schematically illustrate successive stages in the operations of the components of FIG. l.
  • the support means 3 includes a body 7 which carries a pressure cylinder 8 in which a piston 9 of a shuttle driving means reciprocates, this piston 9 being xed with a piston rod 10 which extends to the left, as viewed in FIG. 1, through a suitable guide sleeve carried by the body 7. At its left free end, as viewed in FIG. l, the piston rod 10 forms a pusher member 11 for moving and positioning the shuttle 4 as well as for transmitting the driving power thereto.
  • the pressure cylinder 8 supports for sliding movement not only the piston 9 but also guides a second piston 12 which is formed with an axial bore 13 and which ixedly carries a pair of arms 14 which sides with the piston 12 in the cyiinder 8.
  • a pin 15 extends between and is xedly carried by the arms 14, and on this pin 15 a pair of catch levers 16 are freely swingable in opposed directions, respectively, so as to form a tong-like structure.
  • the pair of catch levers 16 respectively have left jaws 17 received in a hollow interior space 18 which is formed in the piston 9.
  • the piston 9 is provided at its end which is directed toward the piston 12 with an inwardly directed annular flange 19 having an inner conical surface and coacting with the jaws 17 in the manner more fully described in our simultaneously tiled application Ser. No. 578,200.
  • the cylinder 8 iixedly carries in its interior between the piston 9 and the piston 12 a control Cil ring 20 which at its end, that is directed toward the piston 9, is formed at its inner periphery with an annular, conical control surface 21. This surface coacts with control surfaces 22 at the ends of the catch levers 16 which are distant from their holding jaws 17.
  • Compressed air is directed in the direction of the arrow P1 through the bore 13 of the piston 12 into the space 23 between the pistons 12 and 9.
  • the space 24 which is situated at the piston rod side of the piston 9 receives compressed air in the direction of the arrow P2 through the passage 25 which is formed in body 7, and this latter compressed air which ows through the passage 25 in the direction of the arrow P2 is used for returning the piston 9 to its initial position while, during driving of the piston 9 toward the left, as viewed in FIG. l, a suitable unillustrated valving structure opens the passage 25 to permit air to move out of the chamber 24 whose volume is diminishing at this time.
  • These components serve to terminate the movement of the shuttle at the end of one of its strokes as well as to position the shuttle at the beginning of its next stroke and to drive the shuttle along its next stroke.
  • This lever 31 is supported for swinging movement by a pin 32 which is iixedly carried .by the body 7, and a suitable friction brake 33 of any known construction is xed with the lever 31 to control the swinging movement thereof.
  • the lower end 34 of the lever 31 extends alongside of a roller 49 and provides a rolling surface which is engaged by the roller 49.
  • a yblock 3S is fixed to and extends upwardly from the body 7 and is formed with an axial bore in which a guide sleeve 36 is xed.
  • An elongated rod 37 extends slidably through the sleeve 36 to be guided thereby.
  • the left end of the rod 37 as viewed in FIG. 1, carries a projection 38 which at its right end is of a frusto-conical conguration and which at its left end is of a cylindrical configuration, and this projection 38 serves as a releasable holding means coacting with a projection 39 at the right end of a.
  • lever 40 which forms part of a sensing or scanning means for determining whether or not the shuttle 4 is present at the end of its stroke in properly timed relation with the movement of the other components.
  • This cam 52 is carried by the rotary shaft 2 which is supported by the Wall 53 of the stationary frame of the loom.
  • the shaft 2 is formed with an axial groove 54 and the cam 52 is longitudinally adjustable along the shaft 2 and is capable of having its position thereon fixed by Way of a suitable setscrew or the like passing through the cam 52 and received in the groove 54. In this way the lateral position of the cam 52 can be adapted to the lateral position of the support means 3 on the reed-carrying frame 1.
  • the compressed air is capable of advancing the piston 9 to the left beyond the jaws 17, as is apparent from a comparison of FIGS. 7 and 8, and the catch levers 16 are displaced, by the action of the compressed air on the piston 9 itself, to their release position releasing the piston ⁇ 9 and the rod 10 to the force of the compressed air in the chamber 23.
  • This compressed air which enters the chamber 23 in the direction of the arrow P1 provides a rapid, Aforceful driving of the piston 9 and the rod 10 to the left, so that the end 11 of the rod 10 by its engagement with the shuttle 4 drives the latter through the shed of warp yarns.
  • the nal phase of the movement of the piston 9 is indicated in FIG. 8.
  • the catch levers 16 at this operating phase are in their left end positions where the jaws 17 are closed and await the return of the piston 9.
  • the elements which move laterally of the loom (such as the rod 37, the piston 12, and the roller 49) are all mounted on the operating member -45 or operatively connected thereto, and the control for all of these mechanisms is derived from the single cam means formed by the cam 52, the lever 47, and the spring y51.
  • the lateral adjustment of the support means 3 provided by way of the slot 5 and the screw 6 in the manner described above enables the entire structure to have its position changed so that it can be adapted to the weaving of webs of dierent widths.
  • a loom having a first mechanism for braking the movement of a shuttle means at one end portion of the path thereof, a second mechanism for sensing the timed arrival of the shuttle means at said end portion and for stopping the loom if the shuttle means is not sensed, drive means for returning said shuttle means along said path, and a third mechanism for controlling said drive means, the improvement which comprises:
  • connecting means operatively connecting said sensing member and said catch member to said operating member for joint movement
  • cam means connecting said drive shaft to said brake member and said operating member for moving said operating member back and forth, when said drive shaft rotates

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Preliminary Treatment Of Fibers (AREA)
US578317A 1965-09-11 1966-09-09 Shuttle-controlling apparatus for weaving looms Expired - Lifetime US3429344A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS561265 1965-09-11

Publications (1)

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US3429344A true US3429344A (en) 1969-02-25

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US578317A Expired - Lifetime US3429344A (en) 1965-09-11 1966-09-09 Shuttle-controlling apparatus for weaving looms

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US (1) US3429344A (de)
AT (1) AT267430B (de)
DE (1) DE1535410A1 (de)
GB (1) GB1151436A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993104A (en) * 1974-09-25 1976-11-23 Lebocey Industries Shuttle positioner and nipper opening device for loom
US4111239A (en) * 1975-10-10 1978-09-05 Elitex, Koncern Textilniho Strojirenstvi Apparatus for releasably securing a fluid-operated gripper shuttle in a launch position
US20230112881A1 (en) * 2021-10-11 2023-04-13 Tsudakoma Kogyo Kabushiki Kaisha Loom

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US921658A (en) * 1908-01-25 1909-05-18 Valentine Bachman Shuttle-thrower.
FR613526A (fr) * 1925-07-24 1926-11-19 Dispositif d'arrêt des métiers à boîtes de navette fixes en cas de positionnement incorrect de la navette
DE600231C (de) * 1932-09-08 1934-07-18 Walter Schaefer Druckluftantrieb fuer die Schuetzen von Webstuehlen
FR981064A (fr) * 1949-02-18 1951-05-22 Dispositif pour le lancement de la navette par l'air comprimé dans les métiers à tisser
DE822827C (de) * 1950-08-17 1951-11-29 Erich Falke Schuetzenantrieb fuer Webstuehle
FR1389088A (fr) * 1963-02-15 1965-02-12 Commande de métier à tisser
US3330305A (en) * 1964-03-09 1967-07-11 Elitex Zavody Textilniho Shuttle receiving and picking apparatus for gripper shuttle looms
US3332452A (en) * 1965-07-02 1967-07-25 Webstuhlbau Grossenhain Veb Shuttle feeler for looms

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US921658A (en) * 1908-01-25 1909-05-18 Valentine Bachman Shuttle-thrower.
FR613526A (fr) * 1925-07-24 1926-11-19 Dispositif d'arrêt des métiers à boîtes de navette fixes en cas de positionnement incorrect de la navette
DE600231C (de) * 1932-09-08 1934-07-18 Walter Schaefer Druckluftantrieb fuer die Schuetzen von Webstuehlen
FR981064A (fr) * 1949-02-18 1951-05-22 Dispositif pour le lancement de la navette par l'air comprimé dans les métiers à tisser
DE822827C (de) * 1950-08-17 1951-11-29 Erich Falke Schuetzenantrieb fuer Webstuehle
FR1389088A (fr) * 1963-02-15 1965-02-12 Commande de métier à tisser
US3330305A (en) * 1964-03-09 1967-07-11 Elitex Zavody Textilniho Shuttle receiving and picking apparatus for gripper shuttle looms
US3332452A (en) * 1965-07-02 1967-07-25 Webstuhlbau Grossenhain Veb Shuttle feeler for looms

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3993104A (en) * 1974-09-25 1976-11-23 Lebocey Industries Shuttle positioner and nipper opening device for loom
US4111239A (en) * 1975-10-10 1978-09-05 Elitex, Koncern Textilniho Strojirenstvi Apparatus for releasably securing a fluid-operated gripper shuttle in a launch position
US20230112881A1 (en) * 2021-10-11 2023-04-13 Tsudakoma Kogyo Kabushiki Kaisha Loom
US12305314B2 (en) * 2021-10-11 2025-05-20 Tsudakoma Kogyo Kabushiki Kaisha Loom

Also Published As

Publication number Publication date
AT267430B (de) 1968-12-27
GB1151436A (en) 1969-05-07
DE1535410A1 (de) 1969-07-31

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