US3672404A - Device for producing thread windings on a loom - Google Patents

Device for producing thread windings on a loom Download PDF

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Publication number
US3672404A
US3672404A US111932A US3672404DA US3672404A US 3672404 A US3672404 A US 3672404A US 111932 A US111932 A US 111932A US 3672404D A US3672404D A US 3672404DA US 3672404 A US3672404 A US 3672404A
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United States
Prior art keywords
winding
thread
zone
circumference
cross
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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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US111932A
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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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Application filed by Maschinenfabrik Rueti AG filed Critical 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
    • D03D47/261—Preparation of weft
    • 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

  • ABSTRACT A device on a loom for the production of thread windings of predetermined length which comprises a winding element, a rotor means for winding a thread about the winding element, the winding element having a winding zone on which the thread is wound and a delivery zone from which the thread is delivered to a means, e.g. a shuttle, for inserting the thread into an open shed, and displacement means for periodically displacing a given number of turns of the thread wound on the winding zone as a thread winding to the delivery zone.
  • the winding zone comprises a measuring portion for the thread to be wound on that has a cross-section of substantially constant circumference and a narrower portion that is adjacent to said measuring portion having a cross-section of smaller circumference.
  • This invention relates to a device on a loom for the production of thread windings of predetermined length having rotor means for winding a thread around a winding element, and means for displacing each of the thread windings formed by a given number of turns of the thread wound on the winding ele ment from a winding zone to a delivery zone on the element with a minimum of thread breaks.
  • thread windings which consist of a given number of individual thread turns and which have the same thread length.
  • the windings are so formed by a rotor which winds a thread constantly about a winding zone of a winding element. As soon as the winding has the prescribed number of turns, it is displaced along the winding element from the winding zone into the delivery zone.
  • the winding in the delivery zone is transferred to a shuttle and is picked as a weft into an open shed.
  • this invention contemplates a device for producing thread windings which is further characterized in that the winding zone comprises a measuring portion for the thread to be wound on which has a cross-section of practically constant circumference, and in that another narrower portion with a cross-section of a smaller circumference is arranged adjoining the first portion at the end toward or adjacent to the delivery zone.
  • FIG. I shows a view of a device according to the invention from the side
  • FIG. 1a shows a detail of FIG. 1 on an enlarged scale
  • FIG. 2 shows an end view of the device with reference to the left end of the view shown in FIG. 1.
  • the winding body or element 11 has a narrow, blade-shaped form and is provided with a slot 12 extending in its longitudinal direction.
  • the element is rotatably mounted in rotor 13 by means of bearing 14.
  • the winding element 11 is prevented from turning by a retaining member 15.
  • the direction of rotation of rotor 13 corresponds to the direction indicated by arrow 16 in FIG. 2.
  • Rotor 13 is provided with an eyelet 17. Through the eyelet extends weft thread 18, which is taken from a supply roll 11 (not shown), from which it extends through a longitudinal bore in the axis of rotor 13 toward eyelet 17. It can be seen that weft thread 18 is constantly wound on winding element 11 during the rotation of rotor 13.
  • the retaining member bears with its two pins 19 on the bladeshaped winding element 11.
  • the retaining member 15 is carried by a rod 20.
  • the rod slides in its longitudinal direction and is under a continuous bias by a compression spring 22.
  • a pin 23 can be displaced in guide 24 (shown in FIG. 2) parallel to winding element 11. This displacement of pin 23 serves to displace each of the weft windings 25 along winding element II.
  • Guide 24 is carried by a rod 26 which is slidingly mounted in bearing 27 and can be displaced in the bearing toward winding element 11 by pushing.
  • a spring 28 tends to displace the rod in the opposite direction away from the winding element.
  • shuttles 40 are supplied in constant succession from shuttle box 29.
  • shuttle box 29 The mechanism and construction of the shuttle box is not shown since it is not needed for understanding of the present invention.
  • Shuttles 28 each have an elongated body that is conchoidal in shape. They have two side walls 30, each of which carries on its inner side a plush insert 31. These two side walls 30 are joined with each other along the seam 32, but they are separated from each other along the rest of the circumference of the elongated body. The shuttles 40 can therefore be pushed over blade 11 at the position shown in the drawing.
  • shuttle 40 When shuttle 40 is pushed in operation over winding element 11, the element arrives between the two plush inserts 31 and the inserts are placed on both sides over an individual thread winding 25. Then shuttle 40 is moved to the left as shown in FIG.I, where it enters the shed of the wave-type loom.
  • the inserts 31 hold the thread winding 25 in the interior of the shuttle 40 so that this winding 25 is drawn off winding element 11.
  • rotor 13 turns constantly and winds weft thread 18 about winding element 11.
  • the individual turns of thread slide down along the inclined flanks or edges 33 of winding element 11 and are placed side-by-side in the range or measuring portion 36 of constant diameter.
  • Each new turn of thread pushes the existing turns somewhat to the left, forming a one-layer thread winding which extends over zone 34.
  • This zone 34 is called the winding zone of the winding element.
  • shuttle 40 was pushed over blade element 11, and pin 23 was brought into position 23', in which the pin protrudes through slot 12. Subsequently, a shuttle 40 is displaced to the left by means not shown and at the same time pin 23 is moved along guide 24 to the left as shown in FIG. 1.
  • the thread winding 25, which is in the delivery zone designated by reference numeral 35, is thus removed from winding element 11 by shuttle 40 and plush inserts 31, respectively, and thus transferred to shuttle 40.
  • This loaded shuttle 40 is then inserted into a shed formed during the weaving process and places winding 25 as a weft thread between the warps.
  • pin 23 When pin 23 is moved from the position 23' to the left, it pushes a new weft winding 25 to the left. As mentioned above, the pins 19 of retaining member 15 are lifted from winding element 11 during this process so that a winding 25 can be readily pushed or displaced along the element 11. During the displacement, new turns are constantly wound on winding zone 34. If the winding element had a constant cross-section, the first and possibly a few other windings of the new turns on the winding zone would be pulled out lengthwise by the displacement of winding 25 in the direction toward delivery zone 35 of the winding element. This is generally possible because the winding element is so designed that the thread glides easily on it. But there are weft materials, like synthetic fibers and blends thereof with natural fibers, which break occasionally during the displacement of the winding, despite good gliding properties.
  • the portion of the winding body 11 forming the winding zone 34 is shaped in order to avoid this breaking.
  • This zone includes a measuring portion 36 adjoining the inclined edges 33 whose cross-section has a substantially constant circumference or periphery.
  • a narrowing or tapering portion 37 with a cross-section ofa smaller circumference or periphery.
  • the circumference, i.e. peripheral dimensions, of a crosssection of portion 37 are at first greatly and then increasingly less tapered,
  • the smallest periphery of the cross-section of the tapered portion 37 is about 3 to 8 percent less than the periphery of the cross-section of portion 36.
  • the extension or length of portion 36 in the longitudinal direction of winding element 11 is about 4 to 6 times the diameter of the weft thread 18 to be wound on the element.
  • the narrowed portion 37 can also be stepped, as shown in FIG. 1a.
  • This figure shows the upper edge of zone 34 on an enlarged scale with the increasingly weaker taper of portion 37.
  • An embodiment showing a stepped narrowing is shown by the broken or dash line 39.
  • pins 19 bear again on winding element 11 and prevent the element from being set in rotation after the picking element 40 has been pushed away from winding body 11. At the same time the pins 19 prevent the turns, which are at the extreme left on winding zone 34 in FIG. 1 from moving to the left in the case of a weft material which slips or glides easily.
  • control means for effecting periodic displacement of windings along the winding element and for introducing a shuttle into an open shed as well as the operation of a wave-hype loom are described in greater detail in applicants copen mg application, Ser. No. 18,737 filed on Apr. 23, 1969, which disclosure is incorporated by reference in this application.
  • the device of this invention can also be used in other looms, for example, in looms where the weft is picked by means ofajet of a fluid.
  • a device on a loom for the production of thread windings of predetermined length which comprises a winding element, a rotor means for winding a thread about said winding element, said winding element having a winding zone at one end on which the thread is wound by said rotor means and a delivery zone at the other end from which the thread is delivered to a means for inserting the thread into an open shed of the loom, and displacement means for periodically displacing each of the windings formed by a given number of turns of the thread wound on the winding zone to the delivery zone, said winding zone comprising a measuring portion for the thread to be wound on that has a cross-section of substantially constant circumference and a narrower portion adjoining said measuring portion and extending therefrom toward the delivery zone, said narrower portion having a cross-section of smaller circumference than that of the measuring portion.
  • the measuring portion extends in a longitudinal direction of the winding element over a distance that is about 4 to 6 times the diameter of the thread to be wound on said winding element.
  • said winding element is in the form of an elongated substantially flat blade and the circumference between the winding zone and the delivery zone is decreased by decreasing the thickness of the blade while maintaining a constant width.

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Looms (AREA)
US111932A 1970-03-18 1971-02-02 Device for producing thread windings on a loom Expired - Lifetime US3672404A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH404970A CH513069A (de) 1970-03-18 1970-03-18 Vorrichtung zum Erstellen von Fadenwicklungen

Publications (1)

Publication Number Publication Date
US3672404A true US3672404A (en) 1972-06-27

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Family Applications (1)

Application Number Title Priority Date Filing Date
US111932A Expired - Lifetime US3672404A (en) 1970-03-18 1971-02-02 Device for producing thread windings on a loom

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US (1) US3672404A (pm)
CH (1) CH513069A (pm)
CS (1) CS161125B2 (pm)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809129A (en) * 1971-08-13 1974-05-07 Rueti Ag Maschf Device for transferring a portion of weft thread to a weft inserting means
US11535962B2 (en) * 2020-05-21 2022-12-27 Raytheon Technologies Corporation Weaving assembly and method of using

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3809129A (en) * 1971-08-13 1974-05-07 Rueti Ag Maschf Device for transferring a portion of weft thread to a weft inserting means
US11535962B2 (en) * 2020-05-21 2022-12-27 Raytheon Technologies Corporation Weaving assembly and method of using
US20230121696A1 (en) * 2020-05-21 2023-04-20 Raytheon Technologies Corporation Weaving assembly and method of using
US11873589B2 (en) * 2020-05-21 2024-01-16 Rtx Corporation Weaving assembly and method of using

Also Published As

Publication number Publication date
DE2112903B2 (de) 1977-06-23
CS161125B2 (pm) 1975-05-04
CH513069A (de) 1971-09-30
DE2112903A1 (de) 1971-10-14

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