US3233633A - Shuttle guiding and driving means in wave weaving looms - Google Patents

Shuttle guiding and driving means in wave weaving looms Download PDF

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Publication number
US3233633A
US3233633A US294980A US29498063A US3233633A US 3233633 A US3233633 A US 3233633A US 294980 A US294980 A US 294980A US 29498063 A US29498063 A US 29498063A US 3233633 A US3233633 A US 3233633A
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United States
Prior art keywords
shuttle
lead line
driving members
driving
slides
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Expired - Lifetime
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US294980A
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English (en)
Inventor
Fend Heinrich
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Rheinmetall Air Defence AG
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Werkzeugmaschinenfabrik Oerlikon Buhrle AG
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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
    • D03D47/12—Looms in which bulk supply of weft does not pass through shed, e.g. shuttleless looms, gripper shuttle looms, dummy shuttle looms wherein single picks of weft thread are inserted, i.e. with shedding between each pick
    • D03D47/26—Travelling-wave-shed looms
    • D03D47/262—Shedding, weft insertion or beat-up mechanisms
    • D03D47/266—Weft insertion mechanisms

Definitions

  • Such weaving machines may comprise shedding means by which selected warp threads are deflected in such a manner that they are formed into sheds of limited width, a plurality of such sheds being caused to progress at a distance behind each other across the warp in the manner of travelling waves.
  • shedding means by which selected warp threads are deflected in such a manner that they are formed into sheds of limited width, a plurality of such sheds being caused to progress at a distance behind each other across the warp in the manner of travelling waves.
  • a weft carrying shuttle is moved across the warp and behind the shuttle, the weft yarn delivered by it is batted down against the fell of the fabric by a group of reeds before the shed is changed at the place where the weft yarn has been delivered.
  • the main object of the present invention is to provide means for guiding and driving the several shuttles across the warp.
  • each shuttle is provided with a lateral guiding blade extending lengthwise of the shuttle.
  • the shed changing motion is dictated by eyed slides each of which not only serves for individually deflecting a warp thread running through its eye, but each of which also has a pair of notches facing each other and forming a gate for the passage of the said guiding blade of each shuttle.
  • the edges of the guiding blade each comprise a guiding surface paraln lel to the direction of movement of the shuttle and, at the rear thereof, an inclined driving surface converging at an acute angle with the corresponding driving surface at the opposite edge.
  • Another object of the invention is to provide an arrangement which permits an increased number of shuttles to travel simultaneously behind each other across the weave so as to ensure a hi-gh rate of production at a given shuttle speed.
  • Still another object of the invention is to permit the use of shuttles of small length, reduced weight and requiring smaller driving forces.
  • a further object oi the invention is to provide a shuttle driving arrangement which is suitable for reverse displacement of the shuttles in the unweaving of a faulty portion of the fabric.
  • FIGURE 1 is a vertical section through the shuttle drive mechanism of a flat wave weaving machine, with packets of reed teeth fitted for batting-down the weft thread and with a shuttle in the shed, some components lying further back being omitted;
  • FIGURE 2 is a front elevation of the same arrangement with the casing broken away and the reed teeth partly broken off;
  • FGURE 3 is a plan view diagrammatically showing the displacement waveform of the shuttle driving members, with the reed teeth partly broken off, and showing one shuttle;
  • FIGURE 4 is a detail of FIGURE 1 on a larger scale
  • FIGURES 5 and 6 are a plan View and side elevation, respectively, of a modified shape of the shuttle and associated driving members, on a larger scale;
  • FEGURES 7 to 9 diagrammatically show further modifications of the shuttle in section on line VII-VH of FIGURE 4.
  • the weft thread inserting means which will be described hereinaiter are part of a multiple shuttle wave weaving machine or progressive shedding loom which otherwise may be of known construction.
  • the warp threads 25 delivered by a warp beam (not shown) are supported generally parallel to each other and to the plane of FIG. l, rearwardly of the shed-forming and weft inserting means by a iixed supporting bar F extending across the loom.
  • a iixed supporting bar F extending across the loom.
  • woven fabric 62 containing the said warp threads passes over a supporting roller 63 which also extends across the loom, and thence proceeds to a take-oit beam (not shown).
  • the warp threads 25 run each through the eyes 64 of one of a row of heddles d5'.
  • These heddles are mounted each in one of a number, two in this instance, of shafts 66 which are dispose one behind the other.
  • alternate heddles d may be mounted in the rear shaft and the remaining alternate heddles may be mounted in the front shaft, but depen-din0r on the weave pattern, the heddies may be distributed differently on the several shafts and there may be more than two of these shafts arranged behind each other.
  • each set i.e. the shafts 66 situated behind each other, are moved up and down by means not shown in order to deflect the respective warp threads 25 upwards and downwards in planes parallel to each other and parallel to the plane of PEG. l, to form them into sheds adapted to contain travelling weft-inserting shuttles 16.
  • each shaft, and accordingly the shed controlled by one set of shafts may extend over the whole width of the loom
  • at least twice as many sets of shafts 6d are juxtaposed over the width of the loom as there are shuttles le operating at the same time so as at any moment to provide one fully open shed for accommodating each shuttle, and to provide between the sets of shafts forming consecutive open sheds, at least one set of shafts which are free to move for changing their respective shed before the next shuttle enters it.
  • warp shed space The space defined by the uppermost and lowermost positions of the warp threads 2S and within which all sheds are formed and changed will hereinafter be termed the warp shed space.
  • the shuttle drive mechanism shown in FGURE l comprises a pair of cam shafts 9 and 9o, rotatably supported parallel to each other in a casing 32.
  • sets 3 and 4 of cam discs are fitted by means of keys l@ and 19a, respectively, which cam discs are individually denoted 3a, 3b, 3c, 3d ctc. and da, 4b, 4c, ftd etc. in FGURE l and are arranged one behind the other as viewed in FIGURE l.
  • Each of these cam discs is angularly offset a certain amount relative to the subsequent cam disc on its respective cam shaft 9, 9d.
  • levers l with rollers 2 are mounted pivotally independently of each other; these levers are individually denoted lla, lb, 1c etc. and their respective rollers 2a, 2b, 2c etc. are journalled on pins 5a, 5b, 5c respectively.
  • Each roller is arranged between a pair Zia-4a, Sb-lb etc. of cam discs, respectively.
  • a plurality 7 of slides are guided in parallel slots 8 provided side by side in the housing 32 and extending generally in the direction of the warps. ln the top of the casing 32, there is a cut-out from below extending over the length B, through which the levers l reach upward into the slots 8, in which they are guided laterally.
  • slider blocks lll are mounted, which have the same width as the levers l themselves and are guided each in the same slot as the associated lever. These levers l maintain said slider blocks lll engaged from below in recesses of the slides 7.
  • rl ⁇ he cam discs 3, d are so designed that, upon synchronous rotation of the two shafts 9 and 9a, they are permanently in a play-free Contact with the rollers Z. They all have the same configuration but are keyed to the respective shafts in equally spaced angular positions so that they move the slides '7 by means of the levers l to-and-fro between a rear end position and a forward batting position in an identical manner but with a phase offset, in accordance with a predetermined travelling waveform.
  • a dovetail-shaped slot t3 extending transversely of the slots d over the full width of the casing 32 serves for accommodating a ledge l2, which in turn holds all the slides 7 in the slots 8.
  • the slides 7 carry at their left hand side ends a forked projection lili having a recess l5.
  • This recess separates two upwardly directed legs, the forward one of which is shorter than the rearward one and has a flat top surface ll7 parallel to the direction in which the slide is displaceable.
  • Arcuate shuttles ld each having a likewise arcuate rib 2@ on its under face have two Hanks 2l.
  • the outer flank 2l of the shuttle le is embraced over its whole length by the abutments or edges 19 which bound the recess i5 in the projections to the rear, and likewise the inside flank 3l of the guiding rib Ztl of the shuttle is aged by the abutmcnts or edges l bounding the said recesses forwardly.
  • the two edges l8 and 19 converge upwardly, the recesses 3.5i widen downwardly. Since the rib 2t?
  • the shuttle which at its underside rests on the fiat top surfaces l/ of the projections ld, is firmly guided in these projections, so that it can move only laterally in accordance with the movement of the slides "i.
  • flanks 2l and 3l of the shuttle rib 2d are conligurated each as a surface defined, on one hand, by a lead line situated in a reference plane coinciding with the plane indicated by line VII-VII in FG. 4, which plane is parallel to the direction in which the slides 7 are displaceable.
  • each of these surfaces is defined by generating lines all similarly coniigurated, parallel to cach other and intersecting the said lead line.
  • the lead lines of the surfaces forming the flanks 2l and 3l of the shuttle ri'o 2@ are configurated like a portion of the wave line defined by the points of intersection of the edges and l, respectively, with the aforementioned reference plane, said portion of the Wave line forming, in the example illustrated in FlGS. l to 4, a wave trough facing the fell 26 of the fabric.
  • lead lines defining the surfaces of the outer flank 2l and of the inner flank 3l, respectively, of the rib 20 are olfset from each other by invariable distance a (see FIGS. 3 and 4) in a direction parallel to the direction of displacement of the slides 7.
  • rl ⁇ he generating lines of the surfaces forming the Hanks 2l and 3l are similarly configurated as the edges l@ and 23, respectively, that is, they are straight line portions of which those defining the outer flank 2l are substantially perpendicular to the plane of reference Vil-VH and those defining the inner lank 3l form an angle somewhat smaller than with the said. reference plane.
  • the rib 2t* of each shuttle 16 accurately tits the recesses l5 in the forked projections lli of a nurner of slides '7.
  • the edges t8 and 3.9 are straight and the flanks 21 Iand 3l therefore will be constituted by ruled surfaces.
  • the edges l and lh* could be of arcuate form and the flanks and 3l of rib 2t? would then have a different coniicuratio-n defined by the same lead lines.
  • the path of the slides 7 were :arcuate rather than straight, the lead :lines to be considered would lie in a reference surface other than a plane such as that exemplified by the plane Vil-VH in the present example and its modifications.
  • a convenient shape of the travelling wave is illustrated in FlGUlE 3.
  • the shape shown repeats itself any time after an angular onset of 360 of the cam discs so that permanently five to eight of such waves are formed.
  • the travelling waves thus formed bythe projections f4 proceed in one or the other direction transversely of the warp threads depending on the sense of rotation, and thus carry along the shuttle lo lyin.fr in the said wave trough facing the fel 2d of thc fabric.
  • Each shuttle l@ is in engagement only with a predetermined number of slides 7, namely with those which actually form the trough of the wave.
  • a group 27 of reed teeth 22 is mounted on each slide, which group is held together by means of a connecting member 23.
  • Each slide 7 together with its group 2'? of reed teeth is exchangeable; for this purpose, however, the ledge 12 and the cover 3S are to be removed.
  • the warp threads 25 which form the weaving shed pass between the individual reed teeth 22 on their way to the fell Z6 of the fabric, thus enclosing a space in which the shuttle is held by the projections 14 of the slides 7.
  • rhe individual reed teeth 22 of each group are moreover connected at their upper ends by outer connecting members 24.
  • the reed teeth 22 serve for batting down the weft thread on the fell of the fabric in the forward batting position of the slides 7, in which the projections 14 have emerged from the weaving shed.
  • weft thread 2S is stored, which runs from there to the fell 26 of the fabric.
  • a storage of weft thread corresponding to the width of the weave is accommodated therein.
  • the slide 7a is in its rear dead center position and accordingly is at a standstill for a moment. All the slides located further down in FIGURE 3 are moving towards the left in the direction of the arrow, some of their forward edges 1S cooperating with a driving portion 51 of the flank surface 31 of the shuttle rib 20 which is inclined relative to the driving direction, and shift the shuttle 16 downwardly as seen in FIGURE 3. Similarly, all the slides, which in FIGURE 3 are shown above the slide 7a and which are not yet in their forward batting position, move in the opposite direction, i.e. to the right in FIGURE 3.
  • the rear edges 19 of the recesses of some of them cooperate with a driving portion 52 of the fiank surface 21 and push the shuttle 16 in the same direction, as do the other slides, i.e. downwardly in FIG- URE 3.
  • the straight line guidance of the shuttle on a track parallel to the fell 26 of the fabric is taken care of by the same slides, which are in motion, since the rear edges I9 of the recesses l5 of those slides which are shown below the slide 7a cooperate with a guiding portion 53 of flank surface 2l, and the forward edges 13 of the recesses of those slides which are shown above the slide 7a cooperate with a guiding portion Se of flank surface 31.
  • FIGURES 7, 8 and 9 illustrate three modifications of the shuttle 16 shown in its environment in FIG. 3. These modifications differ from the shuttle 16 in that according to them the rib 20, by which the shuttle engages the recesses 15 in the projections 14 of the several slides 7, is differently configurated in horizontal cross-section as taken in the reference plane indicated by the line VII- VII of FIG. 4. However, this rib in each case has the same cross-section, taken in any plane perpendicular to d the direction of displacement of the shuttles, as the rib 20 of the shuttle 16 as shown in FIGS. l and 4.
  • the outer flank 21 of the rib 2f is defined by a line having an arcuate portion 38, a straight portion 41 and another arcuate portion 39, while its inner liank 31 is defined by a line parallel thereto comprising an arcuate portion 40, a straight portion 42 and another arcuate portion 37.
  • these lines 37 to 42 are portions of lead lines for the ruled surfaces which constitute the said flanks of the rib 2t).
  • the lead line poition 38 of the driving surface starting with an inclination with reference to the direction of movement joins the middle lead line portion 41 of the guiding surface which runs parallel to the direction of movement, and the portion 41 joins the lead line portion 39 which ends with an inclination opposed to that of the portion 38.
  • the lead line 4) of the guiding surface likewise starts at an inclination to the direction of movement and joins the lead line portion 42 of the guiding surface which is parallel to the direction of movement; the latter in turn joins the oblique lead line 3'7 of the driving surface.
  • the surfaces defined by the lead lines 37, 38, 39, 4f) exchange their functions from that of driving to that of guiding, and vice versa, when unweaving.
  • the lead line portions 39, 4t) of the guiding surfaces are parallel to the correspending lead line portions 37 and 38, respectively, of the driving surfaces and offset with reference to them by the width a of the recess 15 in the forked. projection 14 of each slide, as measured in the aforesaid sectional plane VII-VII (see FIGURE 4).
  • the same odset is also to be found between corresponding lead line portions 41 and 42 of the guiding surfaces. However, these latter do not interchange their functions when the direction of movement of the shuttle is reversed.
  • the modification of a shuttle illustrated in FIGURE S has guiding surfaces in the form of ruled surfaces defined by lead line portions d4, 45, 46, which in their course likewise assume different directions relative to the direction of movement of the shuttle, namely from an initial inclination with respect to the direction of movement up to parallelism therewith.
  • @ne portion 44 of the lead line of the guiding surface is offset the amount a parallel to the corresponding portion 43 of a lead line defining a driving surface, the lines 44 and 43 likewise exchanging their functions as regards driving and guiding depending on the direction of movement of the shuttle.
  • FIGURE 9 a modification is illustrated of a shape similar to that shown in FIGURE 3.
  • the shuttie accordinf7 to FIGURE 9 no longer has a continuous rib, but two partial ribs 20a and 25th, the shuttle being in contact with moving slides only.
  • the shuttie accordinf7 to FIGURE 9 no longer has a continuous rib, but two partial ribs 20a and 25th, the shuttle being in contact with moving slides only.
  • a lead line portion 50 inclined in one sense to the direction of movement and a lead line portion 429 inclined in the other sense, which lead lines are offset the distance a from lead lines 47 and 48, respectively defining ruled driving surfaces.
  • the forks 36 embrace the shuttle as a whole instead of only a rib thereof.
  • the forks in their cooperation provide likewise complete guidance of the shuttles while at the same time driving the same, owing to their particular construction with a bulge 51, which engages a corresponding groove in the one flank of the shuttle.
  • weft thread inserting means comprising a plurality of similar shuttle driving members arranged side by side, means for displacing said driving members along similar paths all parallel to a common surface of reference, a pair of oppositely facing shuttle engaging abutments spaced from each other in the direction of displacement of the respective shuttle driving member on each of said shuttle driving members, actuating means for reciprocating said shuttle driving members individually along their said paths in phase oiset relation with respect to each other such that the intersections of one of said shuttle engaging abutments of said shuttle driving members
  • said surface of reference define a first lead line travelling along said surface of reference in a direction perpendicular to the direction of displacement of each of said shuttle driving members when reciprocated in said phase offset relation, whereby the intersections of the other of said shuttle engaging abutments of the same members define in said plane of ⁇ reference a second lead line olset by an invariable distance from said first lead line in the direction of displacement of said shuttle driving members and travelling jointly With said rst lead line in
  • each of said shuttles comprises a rib the flanks of ⁇ which are congurated to form said Cain surfaces.
  • each of said shuttles has a supporting surface partly surrounded by said rib
  • each of said shuttle driving members has a portion congurated to deline a supporting abutment located and coniigurated for engagement With said supporting surface of any shuttle the said cam surfaces ot" which are contacted by the rst pair of abutments of the driving member.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US294980A 1962-07-23 1963-07-15 Shuttle guiding and driving means in wave weaving looms Expired - Lifetime US3233633A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH879662A CH409817A (de) 1962-07-23 1962-07-23 Schützenantrieb für Wellenwebmaschinen

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US3233633A true US3233633A (en) 1966-02-08

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US294980A Expired - Lifetime US3233633A (en) 1962-07-23 1963-07-15 Shuttle guiding and driving means in wave weaving looms

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US (1) US3233633A (de)
CH (1) CH409817A (de)
DE (1) DE1289497B (de)
SE (1) SE302434B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298953A (en) * 1964-04-01 1967-01-17 Exxon Research Engineering Co Lubricants containing mixed metal salts of fatty acid and aromatic polybasic acid
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms
US3687171A (en) * 1969-03-18 1972-08-29 Rueti Ag Maschf Drive shaft for a wave-type loom

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US720181A (en) * 1901-06-19 1903-02-10 Levi E Salisbury Multiple-shuttle loom.
US1723426A (en) * 1922-10-20 1929-08-06 Thomas H Jones Circular loom and the production of fabrics thereon
FR1237034A (fr) * 1958-10-09 1960-07-22 Métier à tisser à mouvement ondulatoire

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1072569B (de) * 1959-12-31 Durkoppwerke Aktiengesellschaft, Bielefeld Flachwebmaschine mit horizontalem Kettenfadenverl'auf sowie mit längs der Webbreite als Wanderwelle fortschreitender Fachbildung
DE423122C (de) *
DE85026C (de) *
FR1102743A (fr) * 1953-06-20 1955-10-25 Cerda Const Mec Nouveau mécanisme de tissage

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US720181A (en) * 1901-06-19 1903-02-10 Levi E Salisbury Multiple-shuttle loom.
US1723426A (en) * 1922-10-20 1929-08-06 Thomas H Jones Circular loom and the production of fabrics thereon
FR1237034A (fr) * 1958-10-09 1960-07-22 Métier à tisser à mouvement ondulatoire

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3298953A (en) * 1964-04-01 1967-01-17 Exxon Research Engineering Co Lubricants containing mixed metal salts of fatty acid and aromatic polybasic acid
US3379223A (en) * 1966-07-22 1968-04-23 Oerlikon Buhrle Holding A G Beat-up mechanism for travelling-wave shedding looms
US3687171A (en) * 1969-03-18 1972-08-29 Rueti Ag Maschf Drive shaft for a wave-type loom

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Publication number Publication date
CH409817A (de) 1966-03-15
DE1289497B (de) 1969-02-13
SE302434B (de) 1968-07-15

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