US3500871A - Guide arrangement for pick laying-in members - Google Patents

Guide arrangement for pick laying-in members Download PDF

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Publication number
US3500871A
US3500871A US724476A US3500871DA US3500871A US 3500871 A US3500871 A US 3500871A US 724476 A US724476 A US 724476A US 3500871D A US3500871D A US 3500871DA US 3500871 A US3500871 A US 3500871A
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Prior art keywords
members
laying
guide
loom
guide elements
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Expired - Lifetime
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US724476A
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English (en)
Inventor
Edgar H Strauss
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.)
Ruti Machinery Works Ltd
Maschinenfabrik Rueti AG
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Maschinenfabrik Rueti 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

Definitions

  • the present invention relates to a guide arrangement for the laying-in members or shuttles which introduce the Weft yarn into the sheds (lay-in the pick) on a multi phase weaving machine or a wave-type loom, wherein the members receive weft yarns of predetermined lengths and introduce them into the sheds formed during the weaving operation, the members being continuously driven by drive means extending 'widthwise of the loom, and guided by the warp yarns.
  • the members for laying-in the pick are, after their passage through the shed and after running into a guiding-back device or means, once again guided back to the entry side of the loom.
  • the device carrying out this function is disposed at the end of the drive means which displaces the laying-in members over the width of the warp yarns. If it were then desired to produce a narrower cloth, then it would be difficult to displace the device for grasping and guiding back the laying-in members towards the center of the loom. Above all, due to the presence of the drive means there would be no space for the shifting of the guiding-back device for the laying-in members, if it were displaced towards the center of the loom.
  • the predetermined lengths of weft yarn transferred to the laying-in members are, on the other hand, never of entirely identical length. It may, therefore, happen that, in the case of a relatively long length of weft yarn, the yam has not yet completely run out of the laying-in member when the member emerges or exists out of the warp ber when the member emerges or exits out of the warp yarns. In a case of this kind, disturbances may take place during the further-conveying or movement of the layingin members. Furthermore, weaving flaws or faults and other disadvantages may result from the presence of the yarn residues remaining in the laying-in member.
  • this invention contemplates a guide arrangement as heretofore described further characterized in that, on that side of the loom on which the laying-in members emerge out of the warp yarns, between the warp yarns and a guiding-back means including a run-out device for returning the emerging laying-in members to the entry side of the loom, the members are guided by guide means comprising a plurality of guide elements and in that, between the individual guide elements, intermediate spaces are available for the drive means also extending, widthwise, over the guide elements.
  • FIGURE 1 shows a perspective view of the guide arrangement according to the invention, in its position on a wave-type loom;
  • FIGURE 2 shows the arrangement according to the invention, in an elevation in greater detail
  • FIGURE 3 shows an elevation, as seen from the left, along the dot-dash line IIIIII on FIGURE 2;
  • FIGURE 4 shows an elevation, as seen from the left, along the dot-dash line IVIV on FIGURE 2;
  • FIGURE 5 shows an alternate embodiment of one of the guide elements.
  • the multi-phase weaving machine or wave-type loom shown in perspective in FIGURE 1 has a warp beam 11. From the beam, the warp yarns 12 travel over the deflecting rolls 13, 14 and a warp monitoring means (i.e., a warp stop motion) 15 about a shed compensating roll 16.
  • a shaft arrangement (not shown) having substantially horizontal shafts, the warp yarns 12 are, directly after passing the shed compensating roll 16, subjected to shed formation, an open shed being present at the position of each laying-in member or shuttle 18 and a shed change taking place between every two adjacent shuttles 18. This formation is shown by appropriate hatching in FIGURE 1.
  • One of the sheds formed by the shafts (not shown) is designated by the reference numeral 17.
  • pick laying-in members in the form of shuttles
  • the laying-in members 18 are displaced forwardly by the lamellae 19 operating as drive members (see also the FIGURES 2 to 5
  • the lamellae serve also for the beatingup of the laid-in weft yarns against the fabric beat-up 60. Guiding of the laying-in members 18 in the sheds 17 is elfected by means of the warp yarns 12.
  • the lamellae 19 are fitted in the support arrangement 28 secured to the loom frame 29.
  • two worm shafts 21 and 22 are provided for producing the movement of the lamellae 19.
  • the lamellae 19 are pivoted about a pivot in such manner that each lamella 19 lags by a small amount behind the one arranged before it. (This pivot is designated by the reference numeral 20 in FIGURES 3, 4 and 5.)
  • the woven cloth 23 is taken up over the take-up roller 24 and the pressing-on roller 25, on the cloth beam 26.
  • Reference numeral 27 designates the temple (shown diagrammatically).
  • a first guide means including a guide unit or block (see also FIGURE 2).
  • a guide unit or block see also FIGURE 2.
  • guide elements 42 are fast in the block 30.
  • FIGURE 4 shows a lateral elevation of one of the guide elements 42.
  • the aperture facilities securing the block 30 by a screw to a fixed part of the loom. The screws 52 thus hold the block 30 together as a unit.
  • FIGURE 3 shows a lateral elevation of the guide elements 38.
  • Adjacent the block 36 is a guide-back means including a discharge or run-out device 41. Shuttles 18 travelling in the device 41 are lifted upwardly by means which are not shown and are guided back onto the other side of the loom, from where they participate in a new pick laying-in operation.
  • FIGURES 3 and 4 are elevations as seen in the direction of the arrows at lines IIIIII and IVIV, and show from the side the guide elements 38 and 42. In each of these figures, two reed lamellae 19 are shown in various pivoting positions. It will be seen from FIGURES 3 and 4 that each of the guide elements 38 and 42 is formed with a recess 43 through and by which the shuttles 18 are guided. In the embodiment illustrated, the shape of the delimiting contours of the recess 43 is similar to the cross-section of the shuttles 18 at the point of their maximum cross-section. In order that the shuttles 18 may be moved through the recesses 43, without jamming, therecesses 43 are slightly larger than the largest shuttle cross-section.
  • the lamallae 19 are pivoted continuously about the pivot 20 by the worm shafts 21 and 22 shown in FIGURE 1.
  • the worm shafts 21 and 22 are disposed to the left of the pivot 20 and are not shown in FIGURES 3 and 4.
  • the worm shafts press on those parts of the lamellae 19 which extend towards the left from the pivot 20, so that the lamellae or drive members 19 constitute two-armed levers which are pivotal about the pivot 20.
  • the two lamellae 19 shown in FIGURE 3 indicate the two end positions adopted by the lamellae 19 during their pivoting movements.
  • the yarn cutter is again designated by reference numeral 32.
  • the lamellae 19 are pivoted about their pivot 20, so that the free ends thereof adjacent the shuttles 18 move upwardly and downwardly, the ends producing, in their entirety, a wave movement propagated from the right towards the left.
  • they impinge against the obliquely disposed sides 50 of the shuttles 18 (see FIGURE 2), thereby pushing the shuttles towards the left.
  • the shuttles 18 are, as they travel along their path through the sheds, retained in the position which they have adopted by the warp yarns 12.
  • a yarn 51 the length of which has previously been measuredotf to correspond to the weaving width and which is drawn uniformly out of the shuttle 18 during the travel of the shuttle through a shed 17.
  • the further guiding thereof to the run-out device 41 is first of all assumed by the guide elements 42 and subsequently by the guide elements 38.
  • the guide elements 38 and 42 are so spaced relatively to each other that they retain and reliably guide the shuttles 18 in the position which they have adopted during travel. This is normally achieved if, over a shuttle length, between two and six guide elements of the type shown in FIGURE 2 are available.
  • the drive of the shuttles is effected, as in the case of the travel through the warp yarns 12, due to the movement of the reed lamellae 19, i.e. due to the lamellae 19 located between the guide elements 38 and 42.
  • the guide elements 42 and 38 are not present. In that case, it would be necessary for the travel-out device 41 to be disposed directly at the left-hand side or exit side of the warp yarns 12. As already stated, the shuttles 18 are guided by the device 41, upwardly and on to the entry side of the shed, i.e. back on to the right-hand side of the loom. Now, on the one hand, the shears 32 and the temple 27 require a certain amount of space for the securing thereof. It is therefore not a simple matter, under these circumstances, to obtain a reliable run-in of the shuttles 18 out of the warp yarns 12 directly into the device 41. In order to achieve disturbance-free travel of the shuttles 18 from the shed 17 into the device 41, the guide elements 42 according to the invention are provided.
  • the desired width of the cloth 23 to be produced is narrower than the width which can be produced with the machine illustrated.
  • guide elements 38 are additionally provided. These elements as hereto described are combined to form a single block 36 with the spacer members 39 and screws 42.
  • the guide elements 38 it is the purpose of the guide elements 38 to obtain, in the case of a fabric 23 having the width shown in FIGURE 2, a guideway for the shuttles 18 which guides them as far as the device 41.
  • the number of guide elements 38 may be increased by providing a block which is wider than the block 36 or by a side-by-side arrangement of a multiplicity of such blocks 36. In this way, according to the present invention, it becomes possible to provide guide elements extendlng through various distances and thus cloths of various widths may be woven, in a simple manner, on one and the same machine.
  • the delimitation or shape of the recess 43 shown in FIGURES 3 and 4 is similar to the cross-section of the shuttles 18.
  • the shuttles 18 are, during their travel through the sheds, permanently subjected to a force exerted, from below upwardly, by the drive members or lamellae 19.
  • the recesses in the guide elements the type of delimitation or shape 44 shown in FIGURE 5, wherein the recesses are downwardly open.
  • the guide elements 45 are so dimensioned, i.e. they extend downwardly to such a length that the drive members 19 remain, during their movement, continuously between the guide elements 45.
  • reference numeral 19 designates two lamellae and 46 designates the screws for the holdingtogether of a plurality of guide elements 45 and corresponding spacer members, to form a block.
  • a guide arrangement for guiding weft yarn layingin members on a loom wherein the warp yarns form a plurality of continuously changing sheds and a plurality of Weft yarn laying-in members are being moved simultaneously across the width of the loom, said laying-in members receiving weft yarns of predetermined lengths and laying them successively into separate sheds during travel across said loom, said laying-in members being continuously guided during picking by said warp yarns and continuously driven from one side of the loom through said sheds to the other side of the loom by drive means extending width-wise of the loom, and said laying-in members exiting from said warp threads on said other side of the loom and being returned to said one side of the loom by a run-out device, said arrangement comprising guide means positioned in the path of said laying-in members between the exit side of the warp threads and said run-out device for guiding said layingin members to said run-out device, said guide means comprising a plurality of individual guide elements
  • the means for influencing the selvedge comprises a yarn cutter for severing the free ends of the weft yarns, said yarn cutter being disposed directly adjacent the selvedge, and in which there is provided, adjacent said cutter, a guide element disposed between a suction aperture and said cutter.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US724476A 1967-05-03 1968-04-26 Guide arrangement for pick laying-in members Expired - Lifetime US3500871A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH634167A CH466827A (de) 1967-05-03 1967-05-03 Führungsanordnung für Schussfadeneintragsorgane

Publications (1)

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US3500871A true US3500871A (en) 1970-03-17

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US724476A Expired - Lifetime US3500871A (en) 1967-05-03 1968-04-26 Guide arrangement for pick laying-in members

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US (1) US3500871A (de)
BE (1) BE714540A (de)
CH (1) CH466827A (de)
DE (1) DE1760320A1 (de)
FR (1) FR1562547A (de)
GB (1) GB1154115A (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683969A (en) * 1970-02-13 1972-08-15 Edgar H Strauss Guide arrangement for weft thread inserting elements
US3785408A (en) * 1972-08-23 1974-01-15 Machinery Works Ltd Arrangement of movable thread-contacting lamellae on a wave-type loom
US3792723A (en) * 1972-02-08 1974-02-19 D Titov Weft thread end catching and holding mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714403A (en) * 1953-04-01 1955-08-02 Crompton & Knowles Loom Works Loom operating with gripper shuttle
US3255782A (en) * 1962-07-23 1966-06-14 Oerlikon Buehrle Ag Weaving machine
US3263705A (en) * 1962-11-23 1966-08-02 Rudolf H Rossmann Weaving method and loom

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2714403A (en) * 1953-04-01 1955-08-02 Crompton & Knowles Loom Works Loom operating with gripper shuttle
US3255782A (en) * 1962-07-23 1966-06-14 Oerlikon Buehrle Ag Weaving machine
US3263705A (en) * 1962-11-23 1966-08-02 Rudolf H Rossmann Weaving method and loom

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3683969A (en) * 1970-02-13 1972-08-15 Edgar H Strauss Guide arrangement for weft thread inserting elements
US3792723A (en) * 1972-02-08 1974-02-19 D Titov Weft thread end catching and holding mechanism
US3785408A (en) * 1972-08-23 1974-01-15 Machinery Works Ltd Arrangement of movable thread-contacting lamellae on a wave-type loom

Also Published As

Publication number Publication date
CH466827A (de) 1968-12-15
DE1760320A1 (de) 1971-07-08
FR1562547A (de) 1969-04-04
GB1154115A (en) 1969-06-04
BE714540A (de) 1968-09-30

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