US3424206A - Shuttle and guiding structure therefor - Google Patents

Shuttle and guiding structure therefor Download PDF

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Publication number
US3424206A
US3424206A US577645A US3424206DA US3424206A US 3424206 A US3424206 A US 3424206A US 577645 A US577645 A US 577645A US 3424206D A US3424206D A US 3424206DA US 3424206 A US3424206 A US 3424206A
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US
United States
Prior art keywords
shuttle
guide
rib
warp yarns
guiding
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
US577645A
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English (en)
Inventor
Zdenek Rambousek
Vladimir Svaty
Lubomir Taticek
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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Application filed by Elitex Zavody Textilniho filed Critical Elitex Zavody Textilniho
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Expired - Lifetime legal-status Critical Current

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    • D—TEXTILES; PAPER
    • D03—WEAVING
    • D03D—WOVEN FABRICS; METHODS OF WEAVING; LOOMS
    • D03D49/00—Details or constructional features not specially adapted for looms of a particular type
    • D03D49/60—Construction or operation of slay
    • 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 base slides over the guide face of a reed assembly transversely of the reed blades during weaving while the rib, which projects from the base away from the reed, is guided in a row of stationary spaced fingers whose free end portions form respective bights conformingly to receive the rib, the width of the base being greater than the corresponding dimension of the free end portions.
  • the base thus prevents warp threads from being caught between the rib and the guide fingers.
  • the present invention relates to weaving looms.
  • the present invention relates to shuttles for weaving looms and to structure for guiding a shuttle as it moves through the shed of warp yarns.
  • a guide for the shuttle along the path of movement of the reed-supporting frame requires an extremely accurate adjustment for the elevation of the warp shed. Structures which are situated entirely above the shed for guiding the shuttle make it difficult to move the warp yarns and increase the inertia of the reed frame.
  • FIG. 1 is a schematic side elevation showing the Warp shed and illustrating the shuttle of the invention, in an end view thereof, together with the guiding structure for the shuttle;
  • FIG. 2 is a fragmentary perspective illustration of the shuttle and shuttle guiding structure of the invention
  • FIG. 3 is a side elevation of a shuttle guiding finger of the invention
  • FIG. 4 is a fragmentary end view of the upper portion of the guide finger of FIG. 3 as seen from the right of FIG. 3;
  • FIG. 5 is a transverse section, on an enlarged scale, as compared to FIG. 3, of part of the upper guiding portion of the finger shown in FIG. 3, FIG. 5 illustrating in particular the cross sectional configuration of the guide finger at a location Where it engages the shuttle to guide the latter.
  • the shuttle 1 has a substantially T-shaped cross section.
  • the shuttle 1 includes a relatively wide elongated base 2, which is relatively flat, as indicated in FIG. 2 as well as in FIG. 1, and at its front end 3 the shuttle 1 is tapered so as to have a substantially pointed front end 3.
  • the relatively wide elongated base 2 of the shuttle has a rear surface which fixedly carries an elongated guide rib 4 which extends longitudinally of the shuttle and which is situated midway between the side edges of its base 2.
  • This guide rib 4 is situated at the rear surface of the shuttle to the rear of the pointed front end 3 thereof, and the rib 4 is substantially shorter than the base 2.
  • This guiding rib 4 preferably has in cross section the configuration of an isosceles triangle with the apex of the triangle, which is distant from the base 2, being rounded, as is particularly apparent from FIG. 1.
  • That end of the rib 4 which is distant from the pointed front end 3 of the shuttle serves at the same time as an impact end of the shuttle capable of coacting with a piston rod 5 of an unillustrated and known shuttle driving structure which serves to introduce the shuttle at one side of the shed into the latter for movement thereacross.
  • the loom includes a reed means 9 composed of a plurality of reed blades 8 between Which the warp yarns extend to form a shed whose narrow end is situated on one side of the blades 8, as is particularly apparent from FIG. 1 where the narrow end of the shed is situated at the right side of the blades 8.
  • This right side of the blades 8 of the reed means 9 forms a guide surface 7 of the reed means, and this guide surface 7 slidably engages the base surface 6 of the fiat shuttle body 2.
  • the reed means 9 is supported in a conventional manner by a support means 10 in the form of a frame which carries the reed means and moves it in a conventional manner during the weaving operations.
  • This support means 10 carries elongated gripping strips 11 and 12 which grip between themselves the guide fingers 13 of the invention, and the arrangement is such that these guide fingers 13 form a comb-type of construction, as is particularly apparent from FIG. 2.
  • Each guide finger 13 has an elongated shank 14 which is gripped between the strips 11 and 12 and an upper guiding portion 15 of a substantially U-shaped or V- shaped configuration whose bight conforms generally to the cross sectional configuration of the guide rib 4.
  • the inner periphery 16, 17 of each upper guiding portion 15 of each guide finger 13 slidably engages the rib, and each of these inner portions 16 and 17 of each upper guiding portion 15 has a configuration conforming to the exterior surface of the guide rib 4 so that the portions 16 and 17 respectively engage opposed side surfaces of the rib 4 at a pair of rib-engaging areas for the purpose of guiding the shuttle.
  • each rib-engaging surface 16 and 17 of each guiding portion is narrower than the maximum cross sectional dimension of the guide finger, this cross section becoming gradually wider as it recedes away from the rib-engaging surface 16 or 17, and in the illustrated example the guide finger 13 is of a substantially circular cross section, although this cross section could just as well be more of an oval configuration than the particular circular configuration shown in FIG. 5.
  • the width of the guide surfaces 16 and 17, even after they have become worn will be substantially less than the maximum diameter of the cross sectional area of the guide finger.
  • the guide fingers when they are new, they may have a point or line contact with the rib 4, and after a period of use this area of contact will increase to approach something like that K which is illustrated on an enlarged scale in FIG. 5, but even in this case the maximum diameter of the cross section of the guide finger will not be exceeded.
  • a worm guiding surface of a guide finger cannot come into engagement with the Warp yarns 19 and either during introduction of the shuttle into the shed or during movement of the shuttle out of the shed, so that damaging of the warp yarns at the guide surfaces of the fingers 13 is reliably avoided.
  • each guide finger 13 tapers at its top end in a substantially pointed portion 18, shown particularly in FIG. 4, so that during movement of the guide fingers 13 with respect to the warp yarns, and/or during movement of the warp yarns with respect to the guide fingers, there will never be at the interengaging portions of the warp yarns and guide fingers any possibility of damaging of the warp yarns.
  • the elevation of the guide fingers 13 is chosen in such a way that the shuttle 1, by means of the location of the upper guiding portions 15 of the guide fingers, is situated approximately at half the height of the Warp shed.
  • the shuttle 1 is introduced into the shed formed by the warp yarns 19 and 20 from opposite sides of the shed with the aid of the piston rod 5 of an unillustrated shuttle-driving and shuttle-introducing structure.
  • the piston rod 5 engages an end of the rib 4 and in this way places the shuttle 1 on its path of movement.
  • the shuttle 1 is guided by the slidable engagement of its base surface 6 with the guide surface 7 of the reed means, this surface 7 being formed by edges of the parallel reed blades 8, while the path of movement for the guide rib 4 is determined by the inner rib-engaging surface portions 16 and 17 of the guiding portions 15 of the fingers 13.
  • the shuttle of the invention will not damage the warp yarns because the tapered front end 3 of the shuttle will smoothly engage yarns such as the yarns 19' and 20' and will gently spread them apart from each other so that they engage the rounded edges 25 and 26 of the relatively wide base 2 of the shuttle.
  • the shuttle itself forms from the warp yarns 19 and 20' the opposite sides of a triangle whose base is formed by the transverse width of the shuttle base 2.
  • the warp yarns extend beyond the rounded edges 25 and 26 of the shuttle through the eyes 21 and 22 of the heddles 23 and 24, respectively, so that these heddle eyes form a triangle base not only with the warp yarns when they have the positions 19 and 20 but also with the warp yarns when they have the position 19" and 20", and since the warp yarns are displaced to this latter position by the shuttle of the invention the triangle formed by way of the warp yarns themselves has its size increased by the shuttle of the invention.
  • the larger triangle whose sides are formed by the warp yarns in this way is situated outwardly beyond the rib-engaging portions 16 and 17 of the upper guiding portions 15 of the guide fingers 13 of the invention, so that in this way the shuttle of the invention reliably acts to situate the warp yarns along the sides of a triangle inwardly of which the guide surfaces 16 and 17 are located.
  • the result of the location of the warp yarns outwardly beyond the guide surfaces 16 and 17 prevents the warp yarns from being damaged at these guide surfaces.
  • the location of the pointed front end 3 of the shuttle at a substantial distance forwardly of the front end of the guide rib 4 gives the base of the shuttle sufficient opportunity to locate the warp yarns, if they happen to be at the locations 19' and 20, at the locations 19" and 20" before the guide rib engages the guide surfaces 16 and 17 of a guide finger 13, so that by the time there is such engagement between the guide rib 4 and the guide fingers the warp yarns are of necessity situated outwardly beyond the surfaces 16 and 17, and damage of the warp yarns at these surfaces is reliably prevented.
  • the fact that the total height B of the shuttle is substantially less than the width A thereof is also of advantage in the event of improper movement of the shuttle through the shed, since any weaving of the shuttle directly into the yarns will not result in breaking of the warp yarns but will only result in a lengthening thereof.
  • a support reed means carried by said support and having warp threads passing therethrough
  • a shuttle movable transversely of said reed means
  • said shuttle including a relatively wide base having one side thereof in sliding engagethem with the reed means and a relatively narrow guiding rib provided on the other side of said base, and a plurality of guide fingers carried by said support at points spaced transversely of said reed means, said fingers having guide portions slidably engageable by said rib of the shuttle during movement of the latter transversely of the reed means, the width of said shuttle base in relation to the shuttle rib and to the guide portions of said fingers being such that during movement of the shuttle, longitudinal edges of the shuttle base spread apart and separate the warp threads sufiiciently to provide clearance for the shuttle rib and for the guide portions of the fingers engaged by the rib, whereby to prevent catching of the threads between the rib and the finger guide portions.
  • said shuttle rib has a substantially triangular cross-section presenting a pair of converging guide surfaces, the guide portion of each of said fingers being substantially V-shaped and presenting a pair of diverging surfaces slidably engageable by the respective guide surfaces of said rib.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
  • Treatment Of Fiber Materials (AREA)
US577645A 1965-09-11 1966-09-07 Shuttle and guiding structure therefor Expired - Lifetime US3424206A (en)

Applications Claiming Priority (1)

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CS561165 1965-09-11

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US3424206A true US3424206A (en) 1969-01-28

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AT (1) AT268158B (de)
GB (1) GB1144926A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580292A (en) * 1968-06-03 1971-05-25 Elitex Zavody Textilniho Apparatus and method for positioning warp sheds
US4085777A (en) * 1973-07-24 1978-04-25 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Arrangement for the control of weft introduced into looms
EP0053216A1 (de) * 1980-11-28 1982-06-09 GebràœDer Sulzer Aktiengesellschaft Hilfsblasdüse für eine Luftstrahlwebmaschine

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US136501A (en) * 1873-03-04 Improvement in loom-shuttle motions
US2095576A (en) * 1934-02-23 1937-10-12 Shimwell Oliver Weft inserting and beating-up mechanism of looms for weaving
US2649118A (en) * 1949-08-15 1953-08-18 Hobourn Aero Composnents Ltd Loom picking motion
US2833315A (en) * 1954-08-31 1958-05-06 George W Dunham Lay and pilot guide means
US2942627A (en) * 1957-04-01 1960-06-28 George W Dunham Lay mechanism
FR1366611A (fr) * 1963-08-26 1964-07-10 Webstuhlbau Grossenhain Veb Dispositif à presseur de bords pour métiers à tisser à bobines de trame fixes

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US136501A (en) * 1873-03-04 Improvement in loom-shuttle motions
US2095576A (en) * 1934-02-23 1937-10-12 Shimwell Oliver Weft inserting and beating-up mechanism of looms for weaving
US2649118A (en) * 1949-08-15 1953-08-18 Hobourn Aero Composnents Ltd Loom picking motion
US2833315A (en) * 1954-08-31 1958-05-06 George W Dunham Lay and pilot guide means
US2942627A (en) * 1957-04-01 1960-06-28 George W Dunham Lay mechanism
FR1366611A (fr) * 1963-08-26 1964-07-10 Webstuhlbau Grossenhain Veb Dispositif à presseur de bords pour métiers à tisser à bobines de trame fixes

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3580292A (en) * 1968-06-03 1971-05-25 Elitex Zavody Textilniho Apparatus and method for positioning warp sheds
US4085777A (en) * 1973-07-24 1978-04-25 Vyzkumny A Vyvojovy Ustav Zavodu Vseobecneho Strojirenstvi Arrangement for the control of weft introduced into looms
EP0053216A1 (de) * 1980-11-28 1982-06-09 GebràœDer Sulzer Aktiengesellschaft Hilfsblasdüse für eine Luftstrahlwebmaschine

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Publication number Publication date
DE1535412B2 (de) 1976-01-08
GB1144926A (en) 1969-03-12
DE1535412A1 (de) 1969-07-31
AT268158B (de) 1969-02-10

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