US3687171A - Drive shaft for a wave-type loom - Google Patents

Drive shaft for a wave-type loom Download PDF

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Publication number
US3687171A
US3687171A US17725A US3687171DA US3687171A US 3687171 A US3687171 A US 3687171A US 17725 A US17725 A US 17725A US 3687171D A US3687171D A US 3687171DA US 3687171 A US3687171 A US 3687171A
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United States
Prior art keywords
drive shaft
elements
core
section
teeth
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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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US17725A
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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
Original Assignee
Maschinenfabrik Rueti AG
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Publication date
Application filed by Maschinenfabrik Rueti AG filed Critical Maschinenfabrik Rueti AG
Application granted granted Critical
Publication of US3687171A publication Critical patent/US3687171A/en
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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
    • 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
    • D03D47/263—Weft insertion and beat-up mechanisms

Definitions

  • a drive shaft for use on a wave-type loom which is adapted to swing reed teeth that are arranged side by side along a pivot shaft parallel to the drive shaft and which has a helical exterior or profile against which the reed teeth bear so that the teeth are swung about the pivotal shaft when the drive shaft rotates
  • the drive shaft comprising an inner core of constant cross-section extending over its length and a plurality of elements which surround the core.
  • the elements are arranged in a row in the longitudinal direction of the core and bear against each other. Also, the elements are rotationally connected to the core so that they will rotate with the core.
  • This invention relates to a drive shaft for use on a wave-type loom and more particularly to a drive shaft for swinging reed teeth or dents arranged side-by-side along a pivot shaft parallel with the drive shaft, the drive shaft having a uniquely formed helical exterior or profile, against which the reed teeth bear and the reed teeth being swung about the pivot shaft upon rotation of said shaft.
  • Wave-type looms are known in which the weftthread inserting elements or shuttles are driven and the weft-threads beaten up at the fabric beat-up point or fell by means of reed teeth which are swung about a shaft in such manner that their movements as a whole assume an undulatory form which moves continuously over the width of the loom.
  • the reed teeth are driven by one or two drive shafts, each of which has a raised portion that follows a helical path.
  • the reed teeth are arranged along a pivot shaft which is parallel with the drive shaft and can be swung about the pivot shaft.
  • the ends of the reed teeth bear continuously on the drive shafts and follow the raised portions and the sunk or depressed portions of the profile of the drive shafts so that they are swung.
  • the reed teeth are positioned at right angles to the longitudinal axis of the drive shaft.
  • the profile or driving exterior of the drive shaft must be exactly uniform over its entire length. The greater the length of the drive shaft the more difficult it always becomes to meet this requirement. Furthermore, the drive shafts are worn by the reed teeth, and the reed teeth by the drive shafts, and this wear shortens the service life of each.
  • this invention contemplates a drive shaft for a wave-type loom which is further characterized in that the drive shaft comprises an inner core having a constant cross-section extending over its entire length and a plurality of elements which surround the core and which form the exterior or profile of the shaft, the elements are arranged in a line in the longitudinal direction of the inner core, and are also rotationally connected to the inner core.
  • the inner core can be made of a material that imparts very high strength thereto, and that the material used for the elements forming the profile can be selected to suit the needs of the reed teeth.
  • the friction can be kept to a relatively low value.
  • the material of the elements will be so selected that the wear which the elements and the reed teeth suffer is relatively small.
  • FIG. 1 shows the arrangement of the drive shafts of this invention in a wave-type loom
  • FIG. 2 shows the drive shaft-arrangement in greater detail
  • FIG. 3 is a plan view of two associated drive shafts.
  • FIG. 4 is a plan view of a drive shaft of this invention with cylinder-like elements intermediate the ends removed to reveal the inner core;
  • FIG. 5 is a cross-sectional view taken along line 5-5 of FIG. 4.
  • the wave-type loom or multi-phase weaving machine shown in perspective in FIG. 1, incorporates a warp beam 11. From this beam the warp threads 12 run over the guide rollers 13 and 14 and through a warp thread monitoring arrangement 15 and around a shedequalizing roll 16. The warp threads 12 are formed into a plurality of sheds directly beyond the shed-equalizing roll 16 by means of a heald arrangement comprising substantially horizontal heddles, not shown in the drawing. An open shed 17 is present for each inserting member or shuttle l8, and a shed-change takes place between each pair of adjacent shuttles 18 or open sheds 17. This situation is indicated in the drawing by ap limbate hatching.
  • the shuttles 18 are moved forwards by the blade-like reed teeth 19, which also act as drive members. These reed teeth also serve the purpose of beating-up the inserted weft threads at the fabric beat-up point or fell 20.
  • the shuttles 18 are guided in the sheds17 by the warp threads 12.
  • the ends of bladelike reed teeth 19 are incorporated in the drive and support arrangement 21, which is firmly secured to the loom frame 22.
  • Two worm or drive shafts 23 and 24 are provided in the arrangement 21 for imparting movement to the reed teeth 19.
  • the arrangement indicated by reference numeral 29 in FIG. 1 is shown in an enlarged view in FIG. 2.
  • the arrangement indicated by reference numeral 21 in FIG. 1 comprises a carrier 30, to which is connected a pack of guide elements 31.
  • Each guide element 31 is a broad-faced plate. These elements are arranged side by side parallel with each other and are held together to form a pack by means of rods 32 which pass transversely through each element.
  • rods 32 which pass transversely through each element.
  • Between each two adjacent elements 31 is located a blade-like reed tooth 19. Each of these is held in a straight position between the element 31 adjacent thereto, i.e., is prevented from bowing laterally.
  • the reed teeth or blades 19 consist of thin strips of metal.
  • Each of the shafts has a helical exterior or profile 35 and 36, respectively.
  • the drive shafts 23 and 24 rotate continuously in opposite directions. Swinging movements are imparted to the teeth 19 in accordance with the raised portions of the profiles 35 and 36 of the drive shafts 23 and 24.
  • the profiles 35 and 36 are so selected that the end portions of the reed teeth 19 bear continuously against both profiles and, as already mentioned, the reed teeth execute, as a whole, an undulatory movement.
  • each of these shafts consists of an inner core 40, which is of constant cross-section.
  • Individual camming elements 41 are arranged in a row, side by side, and bearing against each other in the longitudinal direction of the core 40, these elements as a whole forming the profiles 35 and 36, respectively.
  • the cross-section of the shaft 40 may be quadratic (i.e., square) for example.
  • the elements 41 have openings which extend in their iongitudinal direction and are of likewise quadratic cross-section, which is minimally greater than the cross-section of the core 40, so that the elements 41 fit snugly on the core 40. It should be noted that, for reasons of providing a simple illustration, the two shafts 23 and 24 in FIG. 3 are not in their correct location in relation to their rotational position.
  • the elements 41 can be individually replaced if they can slide along the core 40. If for some reason, certain points along the drive shafts 23 or 24 are more heavily stressed as a result, for example, of the woven fabric to be produced, and thus suffer heavier wear than other points along the shafts 23 and 24, then the elements 41 located at these points can be replaced separately.
  • the resistance to wear of the material of the core 40 is not an important factor, so that this can be selected exclusively with a view to providing the greatest possible strength.
  • the elements 41 are advantageously produced from a material, that has little friction resistance on the reed teeth. Since the elements 41 can be readily replaced, care is also taken to see that any wear takes place as far as possible on the elements 41 and as little as possible on the reed teeth 19. Polymethylene oxide has proved to be an advantageous material for the elements 41.
  • each of the elements is preferably equal to the distance between two helical lines or portions of the profiles 35 and 36, respectively, i.e., equal to a wholenumber multiple of the pitch of the helical portion.
  • the length of the elements 41 is equal to the pitch of the helical raised portion.
  • An advantageous method of manufacturing the ele ments 41 consists in first boring out a length of suitable material. With the help of a template, the profile 35, 36 is then formed by turning or milling, i.e., by a machining operation. When the manufacturing operations are complete, the end-faces 42 are milled extremely accurately.
  • the elements 41 can however be manufactured by die-pressing.
  • the blade-like reed teeth 19 are disposed at right-angles to the drive shafts 23 and 24 and their narrow sides or edges bear against these shafts.
  • the ends of these elements meet at inclined faces 42.
  • the two end-faces 42 of the elements 41 are disposed in planes which are inclined to the longitudinal axis 44 of the drive shaft 23 or 24.
  • the tangent at the points on the joint in which a large force is applied to the blades should be inciined relatively to the axis of the drive shaft.
  • a large force occurs for example along the raised edge 45 of the profile 36. Therefore, at the point of intersection 46 of this edge 45 with the joint 42, the tangent struck from the latter should be inclined relatively to the axis 44.
  • a resilient member 47 which is fitted at one end of each of the shafts 23 and 24. As shown in FIG. 3, the member 47 is clamped between the elements 41 and the means 48 for securing the elements 41 to the core. Means 48 fits over the core and may be secured thereto by a set screw or other similar fastening means. The member 47 also causes the elements 41 to be continuously pressed against each other even when the temperature fluctuates. It is of course possible to provide a resilient member 47 at both ends of the drive shafts 23 and 24.
  • the element 41 placed at the end of the core adjacent to the resilient member 47 may have its outer end-face disposed in a plane perpendicular to the axis of the core in order to bear against the resilient member.
  • the resilient member may be shaped to mate with an inclined endface of one of the elements 41 or (as shown) an intermediate element 41' may be provided which has one inclined end-face and one perpendicular end-face.
  • a drive shaft for use on a wave-type loom adapted to drive reed teeth individually, which are arranged side by side along a pivot shaft which is parallel with the drive shaft, said drive shaft having a helical continuous exterior forming helically shaped continuous high and low portions against which the reed teeth bear, the teeth being swung about the pivot shaft when said drive shaft rotates, said drive shaft comprising an inner core of constant cross-section extending over the width of the loom, a plurality of cylinder-like elements having a hollow inner section extending in the axial direction, said elements being arranged in their axial direction in a row and longitudinally over said core, thereby surrounding said core and having their end faces bearing against each other, thus forming said high and low portions, said elements being rotationally connected to the inner core, so that the core and the cylinder-like elements will rotate together, each of said elements being provided with a section of said helical continuous exterior and including a high portion and a low portion therein that extends lengthwise and circumferentially
  • the drive shaft of claim 2 in which the inner core is of quadratic cross-section and the elements contain straight-through openings extending in their longitudinal direction, which openings are likewise of quadratic cross-section, and the cross-section of the core is minimally smaller than the cross-section of the openings in the elements, so that the elements fit snugly on the core.
  • the drive shaft of claim 1 in which the inner core is made of a material of great mechanical strength and the elements are made of a material which has a relatively small friction on the reed teeth and by which the reed teeth are subjected to relatively little wear.
  • each of the individual elements is equal to the distance between two helical raised portions of the helical exterior of the drive shaft, said distance being a wholenumber multiple of the pitch of the helical portions.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US17725A 1969-03-18 1970-03-09 Drive shaft for a wave-type loom Expired - Lifetime US3687171A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH402669A CH496829A (de) 1969-03-18 1969-03-18 Für eine Wellenfachwebmaschine vorgesehene Antriebswelle

Publications (1)

Publication Number Publication Date
US3687171A true US3687171A (en) 1972-08-29

Family

ID=4268427

Family Applications (1)

Application Number Title Priority Date Filing Date
US17725A Expired - Lifetime US3687171A (en) 1969-03-18 1970-03-09 Drive shaft for a wave-type loom

Country Status (6)

Country Link
US (1) US3687171A (de)
BE (1) BE747480A (de)
CH (1) CH496829A (de)
CS (1) CS167279B2 (de)
FR (1) FR2032766A5 (de)
GB (1) GB1232956A (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896859A (en) * 1973-02-09 1975-07-29 Dmitry Vladimirovich Titov Reed structure for progressive shedding looms
US3996973A (en) * 1974-08-29 1976-12-14 Ruti Machinery Works Ltd. Drive shaft for swinging of reed teeth
US4183380A (en) * 1978-06-26 1980-01-15 Steel Heddle Manufacturing Company Lease rods for textile apparatus
US5918656A (en) * 1997-03-11 1999-07-06 Newell Operating Company Retaining clip for sizing a horizontal mini-blind
CN103938344A (zh) * 2014-03-24 2014-07-23 南通纺织职业技术学院 一种小样织机纬向波形织物自动化生产机构

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2701108A (en) * 1949-12-09 1955-02-01 Muschamp Winding machine traverse device
US3124164A (en) * 1964-03-10 Shuttle and heddle drive mechanism for
US3233633A (en) * 1962-07-23 1966-02-08 Oerlikon Buehrle Ag Shuttle guiding and driving means in wave weaving looms
GB1136690A (en) * 1966-11-22 1968-12-11 Rueti Ag Maschf A beat-up comb device for a travelling wave loom

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3124164A (en) * 1964-03-10 Shuttle and heddle drive mechanism for
US2701108A (en) * 1949-12-09 1955-02-01 Muschamp Winding machine traverse device
US3233633A (en) * 1962-07-23 1966-02-08 Oerlikon Buehrle Ag Shuttle guiding and driving means in wave weaving looms
GB1136690A (en) * 1966-11-22 1968-12-11 Rueti Ag Maschf A beat-up comb device for a travelling wave loom

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896859A (en) * 1973-02-09 1975-07-29 Dmitry Vladimirovich Titov Reed structure for progressive shedding looms
US3996973A (en) * 1974-08-29 1976-12-14 Ruti Machinery Works Ltd. Drive shaft for swinging of reed teeth
US4183380A (en) * 1978-06-26 1980-01-15 Steel Heddle Manufacturing Company Lease rods for textile apparatus
US5918656A (en) * 1997-03-11 1999-07-06 Newell Operating Company Retaining clip for sizing a horizontal mini-blind
CN103938344A (zh) * 2014-03-24 2014-07-23 南通纺织职业技术学院 一种小样织机纬向波形织物自动化生产机构
CN103938344B (zh) * 2014-03-24 2015-08-12 南通纺织职业技术学院 一种小样织机纬向波形织物自动化生产机构

Also Published As

Publication number Publication date
GB1232956A (de) 1971-05-26
BE747480A (fr) 1970-08-31
FR2032766A5 (de) 1970-11-27
DE2012104A1 (de) 1971-09-30
CH496829A (de) 1970-09-30
CS167279B2 (de) 1976-04-29
DE2012104B2 (de) 1976-05-20

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