US3721070A - Self-sealing dust bag - Google Patents

Self-sealing dust bag Download PDF

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Publication number
US3721070A
US3721070A US00027509A US3721070DA US3721070A US 3721070 A US3721070 A US 3721070A US 00027509 A US00027509 A US 00027509A US 3721070D A US3721070D A US 3721070DA US 3721070 A US3721070 A US 3721070A
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Prior art keywords
aperture
fibers
section
pulling
bulbous
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Expired - Lifetime
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US00027509A
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English (en)
Inventor
K Minami
T Masaaki
M Hirota
T Nakaue
K Susami
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Toray Industries Inc
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Toray Industries Inc
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Priority claimed from JP860270A external-priority patent/JPS5111699B1/ja
Priority claimed from JP860170A external-priority patent/JPS4813742B1/ja
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
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Publication of US3721070A publication Critical patent/US3721070A/en
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    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H4/00—Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/34—Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using air-jet streams

Definitions

  • ABSTRACT Open-end spinning method and apparatus utilizing a spinning rotor, wherein, fibers of the textile staple material are separated from a fiber bundle due to a mechanical pulling-out action created by a pair of rotating rollers which operate at a very high peripheral speed and simultaneously, the separated fibers are feddirectly or through a guide member to a collecting surface of the spinning rotor mainly by the inertia of each individual fiber.
  • PATENTEDMAR20 I973 INVENTOR ATTORNEYS METHOD AND APPARATUS FOR PRODUCING YARNS BY THE OPEN-END SPINNING SYSTEM BRIEF SUMMARY OF THE INVENTION material are liberated from a fiber bundle continuously fed from a supply source and simultaneously, e51 liberated fiber is ejected individually onto a collecting surface of the spinning rotor and collected thereupon,
  • fibers of the textile staple material are separated from a continuous fiber bundle and thereafter, the separated fibers are fed into a spinning rotor or fiber-collecting means such as a chamber wherein an eddy air current is applied so as to form a continuous fresh bundle of fibers and the fresh bundle of fibers is taken off from the spinning rotor or fiber collecting means while imparting twists thereto so that a twisted yarn can be continuously produced.
  • a spinning rotor or fiber-collecting means such as a chamber wherein an eddy air current is applied so as to form a continuous fresh bundle of fibers and the fresh bundle of fibers is taken off from the spinning rotor or fiber collecting means while imparting twists thereto so that a twisted yarn can be continuously produced.
  • the separation of individual fibers from the continuous bundle of fibers means liberation of individual fibers from mutual interference between then in the technical meaning, the finer the thickness of the individual fibers, or the longer the length of these individual fibers, the more difficult the separation of these fibers from the continuous bundle of fibers. Therefore, the application of the open-end spinning method is actually limited in producing yarns of short fibers such as cotton fiber, at present.
  • individual fibers having a long staple length more than 2 inches can be liberated from a continuous bundle of fibers by applying a separation roller such as the well-known carding roller, if the diameter of the separation roller is settled in an appropriate condition to the length of the individual fibers.
  • a separation roller such as the well-known carding roller
  • the carrying speed of the fibers becomes slow after being delivered from the separation roller and the separated individual fibers are frequently bent or entangled with each other while being carried to the fiber collecting means so that the parallelism between the separated individual fibers is broken.
  • the principal object of the present invention is to provide an improvement in the open-end spinning method and apparatus, wherein individual fibers are liberated from a continuous bundle of fibers supplied from a supply source and simultaneously the liberated fibers are ejected to a rotating spinning rotor while maintaining mutual relation of the lengthwise pafallelism thereof, and a fresh bundle of fibers is taken off from a collecting surface of the spinning rotor while imparting twist to the fresh bundle of fibers, so that the above-mentioned drawbacks of the conventional open-end spinning can be eliminated, in other words, yarns having excellent qualities can be produced.
  • the improved apparatus principally comprises a liberation device such as a pair of pulling-out rollers disposed between the supplydevice and the spinning rotor so that the individual fibers are liberated from the continuous bundle of fibers by pulling action of the pulling-out rollers and simultaneously each liberated fiber is ejected individually to the spinning rotor predominantly by the inertia thereof.
  • a liberation device such as a pair of pulling-out rollers disposed between the supplydevice and the spinning rotor so that the individual fibers are liberated from the continuous bundle of fibers by pulling action of the pulling-out rollers and simultaneously each liberated fiber is ejected individually to the spinning rotor predominantly by the inertia thereof.
  • lt is required that the rotation speed (peripheral) of the pulling-out rollers should be high enough to attain the above-mentioned function thereof, for example, it is preferable that a draft ratio depending upon the action of the pulling-out rollers is larger than :1.
  • the above-mentioned method of ejecting the liberated fibers to the spinning rotor by utilizing the inertia thereof can be considered as one of the characteristic functions of the present invention. It is also one of the characteristic functions of the open-end spinning method of the invention that the individual fibers are liberated from the continuous bundle of fibers by simultaneously applying the pulling action created by the high speed rotation of the pulling-out rollers.
  • any device for supplying a sliver or a roving to the separation device of the invention can be used. Since the liberated fibers are not conveyed to the spinning rotor by a suction air stream, the spinning rotor of an open type is preferably used for the present invention. However, a spinning rotor having a function of receiving a blowing air stream is also available if it is desired to supply an air stream in addition to the above-mentionedutilization of inertia of individual fibers. The latter function is particularly useful for spinning yarns of coarse count or yarns composed of long fibers.
  • a guide pipe for-leading the liberated fibers to the spinning rotor is disposed between the pulling-out rollers and the spinning rotor, wherein a compressed air stream' is flowing along an inside surface thereof, so that the liberated fibers are effectively ejected to a collecting surface of the spinning rotor without dishevelling the parallel lengthwise arrangement of fibers by forming an air stream.
  • the above-mentioned characteristic function of the air stream is distinctly helpful for producing the coarse count yarn or yarn composed of fibers having fairly long staple length.
  • FIG. 1 is a schematiceleyationpartly in section, of a basic spinning apparatus according to the present invention.
  • FIG. 2 is a schematic elevation, partly in section, of a modified embodiment of the apparatus shown in FIG. 1,
  • FIG. 3 is a schematic elevation partly in section, of another modified apparatus according to the present invention.
  • FIG. 4 is a sectional side view of another guide pipe which is available for the apparatus shown in FIG. 3,
  • FIG. 5 is a schematic elevation partly in section, of another modified apparatus according to the present invention.
  • FIG. 6A is a schematic elevation partly in section, of another modified apparatus according to the present invention.
  • FIG. 6B is a side view, of the apparatus partly, in section, looking from a side VI B-VI Bin FIG. 6A,
  • FIG. 7 is a sectional view of the collector, taken along a line VII-VII in FIG. 6A,
  • FIG. 8 is an elevational view of a pair of pullingout rollers shown in FIG. 6A.
  • FIG. 1 A basic improvement of the open-end spinning apparatus according to the present invention is hereinafter illustrated in detail with reference to FIG. 1.
  • a continuous bundle of fibers l is supplied at a constant speed from a pair of feed rollers 2, 2.
  • a pair of pulling-out rollers 4, 4' are disposed between the feed rollers 2, 2' and a spinning rotor 5.
  • a generally funnel-shaped collector 3 guides the fibers from the feed rollers 2, 2 between the pulling-out rollers 4, 4.
  • the distance between the nip point of the feed rollers 2, 2 and that of the pullingout rollers 4, 4' is selected so that the above-mentioned distance is longer than the average length of the individual fibers. Therefore, individual fibers of the continuous bundle of fibers delivered from the feed rollers 2, 2' are liberated from the bundle 1 by the drafting action created by the high speed rotation of the pulling-out rollers 4, 4, because the abovementioned drafting action is carried out at a very high draft ratio.
  • the pulling-out rollers 4, 4' are rotated at a very high speed, the liberated individual fibers are ejected in the common tangential direction of the pulling-out rollers 4, 4 separately by inertia thereof created by the high speed rotation of the rollers 4, 4'.
  • the spinning rotor 5 is located at an adjacent under positionof the pulling-out rollers 4, 4' so that the ejected individual fibers are collected upon a collecting surface of the spinning rotor 5 and a fresh bundle of fibers is continuously taken off from the collecting surface by a pair of take-up rollers 11, 11', while twisting the bundle. Therefore, the construction of the apparatus is very simple and the yarn having good quality can be continuously produced without any troubles such as damage of fibers or creating hooks at the ends of fibers.
  • very high draft ratio means a draft ratio which is sufficiently high to liberate the individual fibers from the continuous fiber bundle.
  • it is required to impart very positive draft of more than times to the continuous bundle of fibers 1 at a drafting field between the feed rollers 2, 2 and the pulling-out rollers 4, 4.
  • the draft ratio is in the range 30-4011, which is considered as a maximum draft ratio of the ring spinning frame, is applied to liberate the fibers from the continuous bundle of fibers 1. it is difficult to liberate the individual fibers satisfactorily, the individual fibers rather interfere with each other.
  • the rotating sp ed of the pulling-out rollers 4, 4' is required to be sufficiently high to create the inertia of the individual fibers. thereby the the liberated fibers are ejected and the common tangential direction of the pulling-out rollers 4. 4
  • the mass of the individual fiber is represented by m
  • the angular velocity of the pulling-out rollers is w
  • the kinetic energy E imparted to the individual fibers is represented by the following expression:
  • the above-mentioned calculation is based upon an assumption that the liberation of the individual fibers from the continuous bundle of fiber is carried out without any resistance, it is actually required to further speed up the rotation speed of the pulling-out rollers for ejecting fine and long staple fibers toward the spinning rotor satisfactorily.
  • Table 2 shows the relations between fineness and As it is shown in the above-mentioned test results, in case the product of mass of individual fibers m and square of the peripheral speed v of the pullingout rollers" mv is larger than 25.0, the wrapping of fibers about the pulling-out rollers is eliminated and each liberated individual fiber is ejected directly to a common tangential direction of the pulling-out rollers. The larger the product of m and v*, the larger the flight distance of individual fibers from the pulling-out rollers. On the other hand, in case the product of m and v is small, particularly in case of spinning very fine fibers, wrapping of the individual fibers about the pulling-out rollers frequently happens.
  • FIG. 2 which shows a modification of the apparatus shown in FIG. 1, a bundle of fibers 1 is fed to means for liberating individual fibers by a pair of feed rollers 2, 2' provided with respective aprons 13, 13', after passing through a collector 3.
  • the individual fibers are liberated from the bundle l by a pair of pulling rollers 4, 4' which creates an intensive draft action at a draft ratio at least times, and the liberated individual fibers are ejected to a collecting surface of a spinning rotor 5 by inertia thereof created by the high speed rotation of the pulling-out rollers 4, 4.
  • a fresh bundle of fibers is taken off from the collecting surface of the spinning rotor 5 by a pair of take-up rollers 11, ll while twisting it so that a yarn 10 is formed, and the yarn 10 is taken up by a winding roller 12 through a delivery pipe 9 of the spinning rotor 5.
  • a stationary guide 7 is inserted into the spinning rotor 5 and further, a plurality of air discharging aperatures 8 are formed at an adjacent surface below the fiber collecting surface of the spinning rotor 5 so as to prevent contacting the ejected fibers with the fresh bundle of fibers taken off from the above-mentioned collecting surface.
  • the liberated individual fibers are smoothly ejected to the fiber collecting surface of the spinning rotor 5. It is further desirable that a pair of casings 6, 6 are used for coven'ng the feeding side of the pulling-out rollers 4, 4' and both sides of the pulling-outv rollers 4, 4 are also covered.
  • the aprons 13, 13 or both the aprons 13, 13 and the stational'casings 6, 6 may be omitted.
  • the pulling-out rollers 4, 4 having larger diameter than that of the feed rollers 2, 2 are preferably employed for obtaining high peripheral speed thereof so that wrapping of the liberated individual fibers about the pulling-out rollers 4, 4' can be prevented.
  • Various types of pulling-out rollers 4, 4' are available for example, rubber rollers, fluted metallic rollers, metallic rollers provided with toothed shaped surfaces etc.
  • Example I A yarn is spun by an open-end spinning apparatus shown in FIG. 2, under the following conditions of Table 3.
  • the particular position is defined by an intersecting point of an elongated line along the surface of the stationary guide 7 with the collecting surface of the spinning rotor in FIG.
  • each liberated individual fiber is ejected along a common tangential direction of the pulling-out rollers and fed to the collecting surface of the spinning rotor 5 after touching the stationary guide 7, without creating any hooks of the fiber ends.
  • many hooks of the fiber ends are observed in fibers collected upon the collecting surface of the spinning rotor 5 in case of utilizing a fiber-liberating roller covered with a metallic wire or wires.
  • the individual fibers liberated from the continuous bundle of fibers are ejected from the pulling-out rollers to the spinning rotor.
  • the flying speed of the individual fibers ejected from the pulling-out rollers is lowered rapidly, in case of spinning yarn from textile fibers having coarse fineness or long staple length, it is desirable to guide positively the liberated fibers flying to the collecting surface of the spinning rotor so as to prevent entangling fibers or dishevelling of the parallel mutual condition of the fibers.
  • FIG. 3 A modified apparatus utilizing the above-mentioned positive guide member is shown in FIG. 3.
  • the identical elements of the apparatus shown in FIGS. 1 and 2 are represented by the same numerals as in FIGS. 1 and 2.
  • the continuous bundle of fibers 1 is supplied to the feed rollers 2, 2' at a constant speed.
  • the bundle of fibers 1 is subjected to a draft action which is created by the pulling-out rollers 4, 4 rotating at a higher peripheral speed at least 100 times the peripheral speed of the feed rollers 2, 2 so that the individual fibers are liberated from the bundle of fibers 1, and the liberated individual fibers ejected from the pulling rollers 4, 4' are simultaneously directed into a guide pipe 14 without changing relative positions of the liberated fibers.
  • the distance between the nip points of the feed rollers 2, 2' and the pulling-out rollers 4, 4' is selected so that this distance is a little longer than the average fiber length of the individual fibers. Therefore, the individual fibers can be completely liberated by the super high drafting action created by the pulling-out rollers 4 and 4'.
  • the guide pipe 14, adjacently disposed to the delivery side of the pulling-out rollers 4, 4, is provided with a branch pipe 15 so as to supply compressed air therein and compressed air is ejected into the spinning rotor 5.
  • the liberated individual fibers are let into the entrance portion 16 of the guide pipe 14 from their leading end one by one while being gripped by the pulling-out rollers 4, 4' and exposing them to an aspirating air stream flowing towards the spinning rotor 5.
  • the individual fibers directed into the guide pipe 14 are carried to the receiving surface 5a of the spinning rotor 5 just after their rear ends leave the nip point 4a of the pulling-out rollers 4, 4. Therefore, the distance L. between the nip point 4a of the pulling-out rollers 4, 4 and a particular position defined by an intersecting point 56 of an extended line along a longitudinal axis of the guide pipe 14 with the receiving surface 5a of the spinning rotor 5.
  • L2 is selected in such a way that L is a little longer than the average length I of the individual fibers, and it be required that the length L2 of the guide pipe 14 is a little shorter than I. If, L2 is longer than 1, since the individual fibers having left their rear end portions from the nip point 4a of the pulling-out rollers 4, 4, are carried freely, these fibers entangle with each other while being carried in the air stream. In case of using textile fibers having a short length such as cotton fiber, the frequency of entanglement of liberated fibers is actually low. On the other hand, if the length of fiber is long, for example longer than 2 inches, it is required to prevent the above-mentioned entanglement of fibers for carrying out the practical spinning operation.
  • the offset position of the branch pipe 15 can be settled at a pertinent position of the guide pipe 14.
  • the liberation of individual fibers'from the bundle thereof can be carried out satisfactorily while the liberated individual fibers are ejected to the spinning rotor without dishevelling the parallelism of their mutual arrangement, so that practical yarns having good quality of evenness can be continuously produced.
  • Example 2 An acrylic yarn is produced from a sliver of polyacrylic fibers (7 denier x 102 mm, sliver weight 2 g/meter) by an open-end spinning apparatus of FIG. 3, wherein a guide pipe utilizing an air ejector shown in FIG. 4 is disposed between the pulling-out rollers 4, 4' and the collecting surface of the spinning rotor 5 with an inclined angle 30 to the collecting syx ass-m-
  • Tables 5 and 6 The dimension of the guide pipe and the spinning conditions are shown in the following tables (Tables 5 and 6).
  • Peripheral speed of the pulling-out rollers 785 mlmin (1,310 cm/sec) Peripheral speed of the feed rollers 3.1 mlmin Draft ratio 253 Distance L, 1 10 mm Maximum inside diameter of the spinning rotor l 10 mm Rotation speed of the spinning rotor 20,000 r.p.m. Count of yarn (metric system) 1/10 Spinning speed 60 m/min Average length I of the individual fibers I02 mm
  • the quality of the produced yarn is shown in Table 6, as follows.
  • FIG. 5 An apparatus shown in FIG. 5 is a modification of the above-mentioned apparatus shown in FIG. 3.
  • the guide pipe 14 comprises a pair of air supply pipes 17, a pair of air chambers 18, a pair of slits l9 and a pair of inside walls 20.
  • the compressed air is supplied to the guide pipe 14 in such a way that the compressed air is continuously ejected into a passage defined by the inside walls 20 from the slits 19 through the air chambers 18. Therefore an aspirating action is created at an entrance portion of the guide pipe 14 and the liberated individual fibers are smoothly led into the entrance portion of the guide pipe 14 by the inertia thereof together with the aspirating air stream. Since an-air film, which is created by an ejection of compressed air from the slits 19 which ejected air streams at an angle below 10 with respect to the longitudinal axis of the guide pipe 14, envelopes liberated individual fibers flying in the guide pipe 14, the parallelism of these fibers is maintained while passing through the guide pipe 14.
  • the textile fibers are liberated from the continuous bundle of fibers by the drafting action of the pulling-out rollers, it is not required to liberate the individual fibers from the bundle in the guide pipe. It is sufficient to guide the liberated individual fibers flying towards the spinning rotor 5 by enveloping the fibers with the above-mentioned air film so that the parallelism of the individual fibers can be maintained during the above-mentioned carrying of fibers to the collecting surface of the spinning rotor 5.
  • the length of the guide pipe is shorter than the average fiber length of the individual fibers, and the distance between the nip point of the pulling-out rollers and the collecting surface of the spinning rotor 5 is slightly longer than the average fiber length of the individual fibers of the fiber bundle.
  • the compressed air is ejected from both sides of the inside walls 20.
  • a cylindrical slit and a cylindrical inside wall can be used instead of the elements of the above-mentioned embodiment.
  • the group of liberated individual fibers can be fully enveloped by a cylindrical air film and the guide pipe 14 can be operated effectively.
  • a plurality of slits that is. at least more than two, can be satisfactorily utilized for the same purpose.
  • Example 3 An acrylic yarn is spun by the open-end spinning apparatus shown in FIG. 5 under the following condition of Table 7.
  • FIGS. 6A, 68 showing a modification of the apparatus illustrated in FIG. 3, explanations with respect to the pulling-out rollers 4,4, the spinning rotor 5, the taking-up rollers 11, 11' are omitted, since they have the identical functions as those of the apparatus shown in FIG. 3.
  • the bundle of fibers l is fed into the drafting zone between the feed rollers 2, 2 and the pulling-out rollers 4, 4.
  • the collector 3 is positioned at the drafting zone so as to prevent the dishevelling of the individual fibers passing through the draft zone.
  • the collector 3 is provided with a pair of slits connected to a pressurized air supply source, and the compressed air is ejected from the slits so that a pair of compressed air streams flow into a guide pipe 22 after passing through spaces formed between grooves of the pullingout rollers 4, 4'. Therefore, the liberated individual fibers are led perfectly into the guide pipe 22 without protruding beyond the pulling-out rollers 4, 4 and the guide pipe 22.
  • the constructions and functions of the collector 3 together with the pulling-out rollers 4, 4 and the guide pipe 22 are hereinafter illustrated in detail. Referring to FIGS.
  • the individual fibers of the bundle of fibers 1 are liberated by the drafting action of the pulling-out rollers 4, 4', which are provided with a pair of grooves formed at both end portions thereof, respectively, as shown in FIG. 8, while passing through a guide passage 32, which is shown in FIG. 7.
  • the compressed air is fed into a pair of air chambers 33 through conduits 31, respectively, and the compressed air is ejected from slits 34 formed at the outlet portions of the respective air chambers 33 to the above-mentioned grooves 41 of the pulling-out rollers 4, 4'.
  • the pulling-out rollers 4, 4 are urged together with high pressure so that the desired draft action can be created.
  • the ejected air streams are led into the guide pipe 22 in such a way that a group of liberated individual fibers are enveloped in the air stream. Consequently, the liberated individual fibers are fed to the spinning rotor 5.
  • the liberated individual fibers are controlled in their movement by the air stream so that the fibers are led along the above-mentioned passage without any protrusions beyond the pulling-out rollers 4, 4'. There- 'fore, the parallelism between the liberated individual fibers can be always maintained. Since the individual fibers are controlled in their movement by the air stream instead of applying a solid guide, any creation of hooked fibers or flying fibers can be satisfactorily prevented.
  • the above-mentioned modified apparatus is preferably available for producing yarns from a coarse bundle of fibers or textile material having coarse fineness or long staple length.
  • Example 4 An acrylic yarn is spun by the open-end spinning apparatus shown in FIGS. 6A, 68 under the following conditions of Table 9.
  • a Yarn B for comparison is also produced by applying the same conditions except for the stopping of the compressed air supply.
  • Table 10 shows this comparison.
  • an improvement comprising means for positively extracting individual fibers from said continuous bundle of fibers, said extracting means comprising a pair of pulling-out rollers disposed between said supply means and said spinning rotor, means for running said pulling-out rollers at a sufficiently high speed for pulling-out said individual fibers from said continuous bundle of fibers whereby the inertia of each of said pulled-out fibers impels it at high speed toward an inside portion of said spinning rotor, without disturbing the mutually parallel arrangement of said pulled-out fibers.
  • An improved open-end spinning apparatus further comprising a guide pipe for directing said pulled-out individual fibers to said spinning rotor, said guide pipe disposed between said pulling-out rollers and said spinning rotor, means for supplying air under pressure into said guide pipe so that said liberated individual fibers are carried to said spinning rotor together with an air stream guide pipe is shorter than said average length l of said individual fibers.
  • An improved open-end spinning apparatus according to claim 1, further comprising means for creating a pair of air streams and applying them on both sides of the nip line of said pulling-out rollers.
  • An improved open-end spinning apparatus further comprising a guide pipe for leading said pulled-out individual fibers to said spinning rotor, said guide pipe being disposed between said pulling-out rollers and said spinning rotor, said guide pipe provided with an entrance having sufficient size to receive said pair of air streams from said air stream creating means.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
US00027509A 1969-04-14 1970-04-13 Self-sealing dust bag Expired - Lifetime US3721070A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2823169 1969-04-14
JP7340869 1969-09-17
JP860270A JPS5111699B1 (enrdf_load_stackoverflow) 1970-02-02 1970-02-02
JP860170A JPS4813742B1 (enrdf_load_stackoverflow) 1970-02-02 1970-02-02

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US3721070A true US3721070A (en) 1973-03-20

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US (1) US3721070A (enrdf_load_stackoverflow)
CH (1) CH510139A (enrdf_load_stackoverflow)
FR (1) FR2039168B1 (enrdf_load_stackoverflow)
GB (1) GB1311731A (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672804A (en) * 1985-08-10 1987-06-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Friction spinning apparatus
US20040073409A1 (en) * 1997-01-21 2004-04-15 Siemens Aktiengesellschaft Method of initializing a simulation of the behavior of an industrial plant, and simulation system for an industrial plant

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5831123A (ja) * 1981-08-15 1983-02-23 Toyoda Autom Loom Works Ltd 繊維束のドラフト方法および装置
AT397822B (de) * 1991-09-26 1994-07-25 Fehrer Ernst Vorrichtung zum herstellen eines garnes

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US249557A (en) * 1881-11-15 truesdell
US2596808A (en) * 1949-04-06 1952-05-13 Electrolux Corp Self-sealing receptacle for separating dust from an air stream
US2964128A (en) * 1959-03-09 1960-12-13 Electrolux Corp Disposable dust containers
US3108736A (en) * 1952-12-20 1963-10-29 Electrolux Corp Container closures
US3274758A (en) * 1963-01-09 1966-09-27 Electrolux Corp Disposable vacuum cleaner dust containers
US3421298A (en) * 1967-03-28 1969-01-14 Electrolux Corp End closure for a disposable vacuum cleaner dust bag
US3568712A (en) * 1969-04-01 1971-03-09 Gen Electric Suction valve for rotary compressor

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Publication number Priority date Publication date Assignee Title
AT264338B (de) * 1966-03-19 1968-08-26 Vyzk Ustav Bavlnarsky Vorrichtung zum Vereinzeln und Zuführen von Textilfasern
US3540201A (en) * 1966-11-04 1970-11-17 Toray Industries Method and apparatus for manufacturing yarn from textile fibers
FR1542342A (fr) * 1966-11-08 1968-10-11 Tmm Research Ltd Appareil pour le filage de fils textiles

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US249557A (en) * 1881-11-15 truesdell
US2596808A (en) * 1949-04-06 1952-05-13 Electrolux Corp Self-sealing receptacle for separating dust from an air stream
US3108736A (en) * 1952-12-20 1963-10-29 Electrolux Corp Container closures
US2964128A (en) * 1959-03-09 1960-12-13 Electrolux Corp Disposable dust containers
US3274758A (en) * 1963-01-09 1966-09-27 Electrolux Corp Disposable vacuum cleaner dust containers
US3421298A (en) * 1967-03-28 1969-01-14 Electrolux Corp End closure for a disposable vacuum cleaner dust bag
US3568712A (en) * 1969-04-01 1971-03-09 Gen Electric Suction valve for rotary compressor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4672804A (en) * 1985-08-10 1987-06-16 Kabushiki Kaisha Toyoda Jidoshokki Seisakusho Friction spinning apparatus
US20040073409A1 (en) * 1997-01-21 2004-04-15 Siemens Aktiengesellschaft Method of initializing a simulation of the behavior of an industrial plant, and simulation system for an industrial plant
US6868373B2 (en) * 1997-01-21 2005-03-15 Siemens Aktiengesellschaft Method of initializing a simulation of the behavior of an industrial plant, and simulation system for an industrial plant

Also Published As

Publication number Publication date
FR2039168A1 (enrdf_load_stackoverflow) 1971-01-15
DE2017889A1 (de) 1972-01-27
GB1311731A (en) 1973-03-28
FR2039168B1 (enrdf_load_stackoverflow) 1973-10-19
DE2017889B2 (de) 1977-06-23
CH510139A (de) 1971-07-15

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