Having Fluid Jet Twisting Means Patents (Class 57/333)
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Patent number: 4631912Abstract: An initial threading mechanism provides for simple but effective threading of the elongated hollow shaft of a vacuum spinning apparatus. Connected textile fibers are fed into the first end of the elongated hollow shaft, into the passageway which extends through the shaft from its first end to a second end. A vacuum tube is mounted for rotation about an axis parallel to and spaced from the axis of rotation of the hollow shaft. When a first open end of the vacuum tube is pivoted into an operative position adjacent the second end of the shaft, and in alignment with the shaft passageway, the vacuum tube connects up to a source of vacuum and draws a segment of the connected fibers completely through the passageway.Type: GrantFiled: May 9, 1985Date of Patent: December 30, 1986Assignee: Burlington Industries, Inc.Inventor: N. Page Hardy
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Patent number: 4624102Abstract: A method for reducing broken fibers on the surface of a carbon fiber bundle involves passing the yarn through a passage in a fluid jet which in turn is supplied with a rimming flow of liquid. When the fiber bundle contacts the liquid, some of the broken fibers snap off and others are twisted and unidirectionally cabled back into the fiber bundle.Type: GrantFiled: June 24, 1985Date of Patent: November 25, 1986Assignee: E. I. Du Pont de Nemours and CompanyInventor: John H. Bell, Jr.
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Patent number: 4621490Abstract: A method and an apparatus for producing a fasciated yarn, utilizing an air nozzle for false-twisting a fiber bundle. The apparatus is provided with a fiber passage comprising an inlet portion, a small channel, and a large channel, and is provided also with a contact area on an inner wall of the small channel, this contact area being formed by the intersection at an angle of the small channel and the large channel.During the spinning operation, the fiber bundle is forced against the contact area, effectively suppressing a twist imparted by a vortex such that it does not ascend toward the upstream region.Also, since ballooning can be suppressed by the contact area, the size of the small channel can be increased, resulting in the intake by suction of a sufficient amount of air in the inlet portion.Type: GrantFiled: July 14, 1983Date of Patent: November 11, 1986Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Susumu Kawabata, Hiroshi Niimi, Meiji Anahara, Hiroshi Omori
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Patent number: 4593521Abstract: In a jet spinning device, in order to enable automatic transport of the yarn from a twist jet to an output roller pair which, for spin-technological reasons, is somewhat spaced from the twist jet, the twist jet is placed in flow communication with a pneumatic guide tube projecting up to the output roller pair. In order to enable automatic threading of the yarn or the like into the output roller pair, the opening or mouth of the guide tube is arranged so close to the output roller pair that the yarn is conveyed into the converging space of the output roller pair and is engaged or entrained thereby.Type: GrantFiled: October 3, 1983Date of Patent: June 10, 1986Assignee: Rieter Machine Works LimitedInventors: Herbert Stalder, Emil Briner
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Patent number: 4581886Abstract: A twist producing device for a thread-shaped textile product moving in the longitudinal direction thereof includes a housing with a thread inlet side, a thread channel formed at the thread inlet side of the housing having a given open cross-sectional area permitting passage of a thread, an expansion chamber disposed in the housing downstream of the thread channel in the longitudinal direction having an open cross-sectional area being larger than the given area and defining an outer wall, an annular pre-expansion chamber with an open cross-sectional area formed in the housing surrounding the thread channel and defining an outer wall coextensive with the outer wall of the expansion chamber, means formed in the housing for supplying compressed air, and at least one air injection orifice with an open cross-sectional area leading from the compressed air supply means and discharging tangentially into the pre-expansion chamber, the compressed air supply means, the open cross-sectional area of the air injection orifiType: GrantFiled: January 24, 1985Date of Patent: April 15, 1986Assignee: W. Schlafhorst & Co.Inventor: Liberto Coll-Tortosa
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Patent number: 4575999Abstract: In a pneumatic nozzle utilized in the process of producing a fasciated yarn, provided with a transporting passage of a fiber bundle in which an inlet portion, a smaller channel, and a large channel having an outlet opening are successively arranged along the longitudinal axis of the transporting passage, and a plurality of air supply apertures for ejecting compressed air toward a restricted region of the transporting passage, a plurality of small chambers formed around the large channel is symmetry with respect to the large channel's longitudinal axis and connecting apertures for connecting the large channel to the outside of the nozzle so that air introduced into the large channel through the inlet opening and the air-supply apertures can be partly discharged, while the remaining part of the above-mentioned air is discharged from the outlet of the large chamber.Type: GrantFiled: July 14, 1983Date of Patent: March 18, 1986Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Meiji Anahara, Hiroshi Omori
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Patent number: 4569193Abstract: An apparatus for producing a fasciated yarn comprising two air nozzles (2, 3) arranged at an angle in such a manner that a wedge shaped space (S) is formed therebetween, in which each of the air nozzles (2, 3) has a function of rotating a fiber bundle about the axis thereof in a direction that is the reverse of the other. A yarn passage from the first air nozzle (2) and to the second air nozzle (3) is so adapted that the fiber bundle is not in positive contact with an inner wall of an exit portion (7) of the first air nozzle (2) but is in contact with an inner wall of an inlet portion (4) of the second air nozzle (3), whereby a twist ascent from the second air nozzle (3) into the first air nozzle (2) is adequately suppressed and effective fasciated yarn forming is attainable. According to the wedge shaped space (S), the interference by exhaust air from the first air nozzle (2) with the second air nozzle (3) is eliminated.Type: GrantFiled: May 31, 1985Date of Patent: February 11, 1986Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Meiji Anahara, Hiroshi Omori, Kazuo Seiki
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Patent number: 4565063Abstract: A fiber sliver is drafted to a yarn count in a drafting mechanism and is fed to a false twist unit with a sliver width B1 of 10 to 19 mm. In accordance with the method, by means of the width B1, the fiber sliver leaving the delivery roller pair is divided into a yarn core rotated by the false twist member with a spinning triangle of the width B2 and into edge fibers delivered thereto. The edge fibers are taken up by the rotating yarn core in the suction passage of the false twist unit. The taking-up of the edge fibers occurs in that the front ends of the delivered edge fibers are caught by the rotating yarn core in the region of the narrowest portion of the suction passage and are wound about the yarn core with the same rotational direction as the fiber core but with a substantially larger inclination until the rear end of the edge fibers is wound into the yarn core in the spinning triangle.Type: GrantFiled: June 25, 1984Date of Patent: January 21, 1986Assignee: Rieter Machine Works Ltd.Inventors: Herbert Stalder, Emil Briner
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Patent number: 4565064Abstract: This is a process and apparatus for the preparation of fasciated spun yarns, which includes feeding separate single fibers formed by opening and drafting a continuous staple fiber bundle into a rotor (20), collecting and holding the single fibers on a fiber-collecting portion of the rotor (20) and taking out the collected fibers through a center piece (26) by delivery rollers (33) while strongly false-twisting the collected fibers in the same direction as that of true twists given by the rotor (20) into a twisted yarn by a false-twisting apparatus arranged between the rotor (20) and the delivery rollers (33), wherein the separated single fibers are supplied to a travelling plane for the twisted yarn between the fiber-collecting portion of the rotor (20) and the center piece (26) to entangle some of the single fibers with the twisted yarn in the strongly false-twisted state, and the entangled single fibers are entwined around the periphery of the twisted yarn by subsequent release of the false twists of the twType: GrantFiled: August 17, 1984Date of Patent: January 21, 1986Assignee: Howa Kogyo Kabushiki KaishaInventors: Takeru Iwasaki, Kenji Sasaki, Hiroshi Enomoto
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Patent number: 4509321Abstract: Apparatus for manufacturing fasciated spun yarn by false-twisting and detwisting a bundle of fibers is provided. The apparatus has a fiber-diffusing section which utilizes differential fluid flow to separate and transfer free fibers in a stable manner for subsequent wrapping about the fiber bundle as the bundle is detwisted.Type: GrantFiled: May 4, 1983Date of Patent: April 9, 1985Assignee: Toray Industries, Inc.Inventors: Koji Kajita, Takashi Nakayama, Seiichi Yamagata
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Patent number: 4509322Abstract: A false twist unit comprises a suction portion with a suction channel and with an expansion space connected at the throat portion or narrowest position of the suction channel, which expansion space is connected by means of an air connector or exit to a source of negative pressure. A throttle location connects the expansion space with a pneumatic twist imparting means. In the pneumatic false twist spinning process known from the German published Pat. No. 2,722,319 a sliver delivered from an exit roller pair of a drafting mechanism is forwarded through the suction channel in a predetermined direction and thereafter through the throttle location into the twist imparting means. The twist imparting means produces in the core of the yarn or thread a false twist which builds up in such yarn or thread towards the exit roller pair. The wrapping fibers required for the finished yarn or thread are sucked in as edge fibers through the suction channel simultaneously with the yarn core.Type: GrantFiled: March 28, 1984Date of Patent: April 9, 1985Assignee: Rieter Machine Works LimitedInventors: Emil Briner, Richard Hieronymi
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Patent number: 4503662Abstract: In the piecing operation, the broken ends of a yarn and a fiber bundle are sucked into a suction nozzle, and therein are entangled due to twists imparted to the fiber bundle by first vortices utilized for forming a fasciated yarn. The broken end of the yarn may be twisted in reverse of the fiber bundle by second vortices. Further, third vortices weaker than the first vortices may be used instead of the first vortices. The apparatus comprises jets for generating the second and third vortices and piping for transporting air to the jets and from the suction nozzle, as well as a control circuit thereof.Type: GrantFiled: September 21, 1982Date of Patent: March 12, 1985Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Mitsunori Horiuchi, Yoshihisa Suzuki, Yoshiharu Yasui, Kazuo Seiki
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Patent number: 4497167Abstract: A spun yarn is manufactured from a sliver through an action of a first fluid swirling nozzle and a second fluid swirling nozzle capable of swirling a fluid in a direction opposite to the direction of swirling of a fluid in the first fluid swirling nozzle. Fibers detached from a sliver between a front roller assembly and a first fluid swirling nozzle are caused to wind positively around the twisted fibers during spinning operation.Type: GrantFiled: February 2, 1983Date of Patent: February 5, 1985Assignee: Murata Kikai Kabushiki KaishaInventors: Teiji Nakahara, Toshifumi Morihashi
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Patent number: 4489545Abstract: A method and apparatus for producing a fasciated yarn, utilizing an air nozzle for false twisting a fiber bundle, provided with a fiber passage comprising an inlet portion, a small channel, and a large channel, characterized by the provision of at least a contact area in the inlet portion and/or the upstream region of the small channel. During the spinning operation, the fiber bundle is forced against the contact point, and, as a result, a twist imparted by a vortex can be effectively suppressed so that it does not ascend toward the upstream region.Also, since the ballooning can be suppressed by the contact point, the size of the small channel can be increased, resulting in the sufficient suction air in the inlet portion.Type: GrantFiled: May 12, 1983Date of Patent: December 25, 1984Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Kawabata Susumu, Niimi Hiroshi, Anahara Meiji, Omori Hiroshi
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Patent number: 4480434Abstract: An improved air nozzle for processing a fiber bundle such as a staple fiber roving or a multifilament yarn. The air nozzle comprises a narrow channel and a wide channel in series, and part of the narrow channel protrudes into the inside of the wide channel so that a double tube is formed in the connecting portion thereof. Further, at least one jet is provided in the wide channel in the vicinity of the protruding end of the narrow channel. Due to this construction, no turbulence occurs in the wide channel during operation and an excellent sucking effect, as well as an excellent twisting effect, is obtained.Type: GrantFiled: September 30, 1982Date of Patent: November 6, 1984Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kabushiki Kaisha Toyota ChuoKenkyuschoInventors: Niimi Hiroshi, Anahara Meiji, Muramatsu Shigeru
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Patent number: 4480435Abstract: A false-twist nozzle with an improved structure is provided herein. The false-twist nozzle according to the invention comprises a housing having a large-diameter yarn passage portion and an insert member having a small-diameter yarn passage portion and a fluid conduit hole. When the insert member is within the housing, a complete yarn passage hole is formed through the nozzle. Because the insert member is separable from the housing, drilling of the very small diameter fluid conduit hole can be made easily and accurately prior to insertion within the housing. Furthermore, the fluid conduit opening is disposed both annularly and angularly in the downstream direction with respect to the yarn passage hole, thereby increasing the twisting action induced by the flow of jetted fluid while preventing damage to the yarn.Type: GrantFiled: December 23, 1982Date of Patent: November 6, 1984Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Meiji Anahara, Yoshihisa Suzuki, Shigeru Takasu, Hiroshi Omori
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Patent number: 4476672Abstract: An air nozzle utilized for false-twisting a fiber bundle to form a fasciated yarn, comprising, in series, an inlet and a fiber passage provided with at least a jet for generating a vortex within the fiber passage. The inlet has an opening of a flattened shape having upper and lower walls longer than the side walls thereof and has a size decreasing toward the fiber passage. The edge portion of the ribbon-like fiber bundle passing through the air nozzle strongly contacts the upper and lower walls of the inlet during the twisting operation by the vortex. As a result of frictional resistance with the walls, the twist angle of the edge portion fibers becomes less than that of the core portion fibers. This causes a tightly fasciated effect of the edge portion fibers onto the core portion fibers during the untwisting operation.Type: GrantFiled: December 2, 1982Date of Patent: October 16, 1984Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Meiji Anahara, Kazuo Seiki, Hiroshi Omori
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Patent number: 4468918Abstract: A compressed gas splicing head assembly in an automatic splicing device for producing a knot-free thread connection by splicing, includes a compressed gas splicing head having a splicing channel with two ends formed therein defining a plane of symmetry in longitudinal direction of the splicing channel, the splicing head having outlets for the splicing channel formed therein, and the splicing head having at least two compressed gas injection openings formed therein discharging in said splicing channel mutually opposite and offset to the left and right of the plane of symmetry for holding and mutually tangling, bunching, swirling and winding fibers of two threads to be interconnected, said injection openings including an injection opening disposed closest to a given portion of each respective outlet, and thread and air guides each disposed at a respective one of the ends of the splicing channel, each of the guides obstructing a respective one of the given portions of the outlets, and the threads being disposedType: GrantFiled: April 25, 1983Date of Patent: September 4, 1984Assignee: W. Schlafhorst & Co.Inventors: Joachim Rohner, Heinz Zumfeld, Reinhard Mauries
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Patent number: 4468921Abstract: An air nozzle for producing a sheath-core type fancy yarn, comprising a hollow cylindrical nozzle body in which a vortex occurs around an axis thereof due to a suction flow of a subatmospheric pressure source. Within the nozzle body a conical cap and a ring body are arranged in series. A sheath yarn is overfed into the nozzle body in the tangential direction to the inner surface of the body and wraps around the conical cap to form a plurality of loops due to the vortex, then entangles a core yarn running straight through the nozzle body. Since an outer surface of the conical cap and a central opening of the ring body guide the vortex smoothly along a yarn path, a fancy yarn having uniformly and tightly entangled loops can be obtained.Type: GrantFiled: April 22, 1983Date of Patent: September 4, 1984Assignee: Mitsubishi Rayon Co., Ltd.Inventors: Kunio Shibata, Tomotsugu Kanamura, Tunehiko Nakamura
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Patent number: 4457130Abstract: An air nozzle for spinning yarn is positioned adjacent a pair of drafting rollers. The space between a cap covering the nozzle and the nozzle itself forms a tank for the air to be jetted through the nozzle. A tapered throttle located behind the nozzle reduces resistance to air exiting from the jetting ports.Type: GrantFiled: December 28, 1981Date of Patent: July 3, 1984Assignee: Murata Kikai Kabushiki KaishaInventors: Shoji Sakai, Michiaki Fujiwara, Nobunori Kubota, Koshi Noda, Toshifumi Morihashi
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Patent number: 4450678Abstract: An air nozzle, suitable for producing a fasciated yarn, having at least one jet in each of narrow and wide passages along the traveling direction of the fiber bundle. Each jet is directed to generate a vortex whirling reversely from that of the other passage. The twist imparted to the fiber bundle by the vortex generated in the wide passage is restrained by the vortex whirling reversely thereto in the narrow passage. As a result, circumferential fibers of the fiber bundle are less twisted relative to the core portion thereof. During the untwisting operation of the vortex of the wide passage, the circumferential fibers are entangled around the core portion with a twist corresponding to the difference from the core portion, thereby obtaining a well-fasciated yarn.Type: GrantFiled: December 21, 1982Date of Patent: May 29, 1984Assignees: Kabushiki Kaisha Toyoda Jidoshokki Seisakusho, Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Susumu Kawabata, Hiroshi Niimi, Meiji Anahara, Yoshihisa Suzuki, Hiroshi Omori
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Patent number: 4438621Abstract: Thread joining device, including a stationary basic body having a channel for compressed air formed therein, a splicing head having formed therein a splicing chamber for inserting and joining threads and a compressed air channel for communication between the splicing chamber and the channel formed in the basic body, and means for easily exchangeably fastening the splicing head to the basic body.Type: GrantFiled: January 31, 1983Date of Patent: March 27, 1984Assignee: W. Schlafhorst & Co.Inventor: Joachim Rohner
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Patent number: 4437302Abstract: A false twisting air nozzle for use in fasciated yarn spinning and the like. The air nozzle has a fiber bundle passage for allowing a fiber bundle to pass therethrough in a direction, the fiber bundle passage including an inlet, a smaller-diameter hole portion, and a larger-diameter hole portion which are arranged in series. An air injection hole has end opening tangentially and downstream in the larger-diameter hole portion. Air passages are disposed around the smaller-diameter hole portion and held in communication with the larger-diameter hole portion for increasing the force with which the fiber bundle can be drawn into the air nozzle. The air passages may be a plurality of slots defined in an inner wall surface of the smaller-diameter hole portion or a plurality of independent holes defined radially outwardly of the smaller-diameter hole portion.Type: GrantFiled: January 19, 1983Date of Patent: March 20, 1984Assignee: Kabushiki Kaisha Toyoda Jidoshokki SeisakushoInventors: Meiji Anahara, Hiroshi Omori
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Patent number: 4434611Abstract: The present invention relates to a pneumatic twisting spinning apparatus comprising a drafting device for forming a fleece, a deflection roller, a pneumatic twisting nozzle for injecting air into a twisting tube to form a swirling air stream, so that the fleece can be twisted into a yarn, a take-up roller for withdrawing the yarn, and a winding roller. The deflection roller is disposed adjacent to the front roller, for varying the direction of fleece travel and supplying the fleece along an outer peripheral wall of said front roller, and separating ends of peripheral fibers from the fleece as free fibers, which will be twisted by the pneumatic twisting nozzle so as to be wound around central main fibers, thereby forming a bundled yarn.Type: GrantFiled: January 20, 1982Date of Patent: March 6, 1984Assignee: Kabushiki Kaisha Toyota Chuo KenkyushoInventors: Junzo Hasegawa, Susumu Kawabata, Hiroshi Niimi
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Patent number: 4424663Abstract: Thread splicing device, including a stationary base body having a first compressed-air canal formed therein, a splicing head being interchangeably connected to the base body, the splicing head having a second compressed-air canal formed therein being in communication with the first compressed-air canal formed in the base body and the splicing head having a splicing chamber formed therein being in communication with the second compressed-air canal formed in the splicing head, the splicing chamber including a selectively coverable longitudinal slot having a slot bottom and being operable for inserting and joining threads, the slot having a substantially circular cross section, at least in the vicinity of the bottom thereof, forming a partly full circle leaving an open aperture for inserting and removing the threads.Type: GrantFiled: October 27, 1981Date of Patent: January 10, 1984Assignee: W. Schlafhorst & Co.Inventors: Joachim Rohner, Heinz Zumfeld, Reinhard Mauries, Hans-Jurgen Preuhs
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Patent number: 4345425Abstract: A bulky textured multifilament yarn comprises sections of interlaced individual filaments and sections of non-interlaced individual filaments, wherein the interlaced and non-interlaced sections are formed alternately along the lengthwise direction of the yarn, the filaments in any predetermined length of the yarn are substantially identical in length, and some portions of the individual filaments protrude out from the axis of the yarn. The yarn is made by slackening a multifilament yarn treated by a false twisting operation, and then by interlacing the slackened multifilament yarn by means of a fluid jet stream while taking up the multifilament yarn.Type: GrantFiled: December 5, 1980Date of Patent: August 24, 1982Assignee: Toray Industries, Inc.Inventors: Takao Negishi, Kazuo Tomiita
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Patent number: 4329840Abstract: In a method of and apparatus for feeding a tow to a textile machine, the leading end of the tow is automatically twisted by a vortical gas flow during transport through a tube to the machine. Preferably the vortical gas flow is also used to draw the tow through the tube.Type: GrantFiled: June 30, 1980Date of Patent: May 18, 1982Assignee: Luwa AGInventors: Hermann Gasser, Paolo Di Benedetto, Johann W. Ferri
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Patent number: 4322944Abstract: Method of and apparatus for break spinning yarn in a spinning machine. A fiber ribbon is formed into a fiber ribbon, the ribbon is false twisted in a first twisting element, staple fiber ends are lifted from the false twisted ribbon in a second, re-spinning twist imparting element, the second element being driven in the same direction as but at a higher speen than the first element, the thus resulting spun yarn is given an additional, true twist, and is then wound on a bobbin.Type: GrantFiled: June 11, 1979Date of Patent: April 6, 1982Assignee: Elitex, koncern textilniho strojirenstviInventors: Stanislav Sraitr, Hana Srejberova
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Patent number: 4322942Abstract: An open-end spinning method and an apparatus wherein a flow of discrete fibers is supplied to a fiber spreading element by which they are spread over the entire periphery of an inner fiber deposit surface of a drum where a fibrous layer is continuously created. Fibers are successively withdrawn from the fibrous layer by taking off the open end of yarn and rotating it about its axis, due to a twisting moment acting on the yarn, such twisting moment being created in a region beyond the drum axis. The yarn can be given an additional twist by causing its open end to revolve about the axis of the drum. The invention enables the attainment of a high degree of the so-called cyclic fiber doubling in the spinning process, a high productivity at a relative low peripheral velocity of the operating elements of the spinning device, and the possibility of manufacturing yarns of various parameters and characteristics in one and the same spinning unit.Type: GrantFiled: July 29, 1980Date of Patent: April 6, 1982Assignee: Vyzkumny ustav bavlnarskyInventors: Ludvik Fajt, Stanislav Didek, Jaromir Kasparek, Jaroslav Storek, Jiri Andres, Zelmira Borovcova, Marie Markova, Marketa Reymanova, Miroslav Stepanek
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Patent number: 4307497Abstract: A method is disclosed for the treatment of textile yarns of filamentary material, such as glass fiber yarns. The yarn passes through a fluid jet which includes a central chamber which is formed from a pair of interconnected and overlapping passageways. Each passageway includes one or more fluid inlets along its length to allow treating fluid to pass circumferentially around each passageway in a counterdirectional pattern. The textile yarn passes between the passageways in the chamber and the filaments in the yarn are entangled with each other to consolidate and round the yarn without a true or false twist being placed on the yarn. Depending upon the amount of tension in the yarn, the fluid pressure in the jet and the speed of the yarn through the jet, the degree of entanglement can be varied. Under low to zero tensions, texturized yarns and yarns having slubs thereon can be produced.Type: GrantFiled: November 9, 1977Date of Patent: December 29, 1981Assignee: PPG Industries, Inc.Inventor: Warren W. Drummond
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Patent number: 4223520Abstract: A bulk yarn formed from a plurality of multi-filament yarns having alternating compact and open segments. The compact segments include first and second plaited portions which are twisted in opposite directions. The open segments of the yarn are defined by loosely bundled multi-filament yarn. The apparatus for bulking the yarn includes an elongated housing having a longitudinal bore extending therethrough. Pressurized air passes through diametrically opposed passages for contacting the yarn as it passes through the bore for producing the bulking effect thereon.Type: GrantFiled: December 20, 1977Date of Patent: September 23, 1980Assignee: Poinsett Machine Works, Inc.Inventors: Robert L. Whitted, James E. Simmons
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Patent number: 4219998Abstract: An apparatus for twisting a fibre strand to have repeated along its length alternating zones of opposite twist comprises a fluid vortex device having two fluid inlets and a valve controlling fluid flow to the inlets. The valve comprises a hollow cylindrical rotatable valve member and a sleeve having a number of outlet ports surrounding the member. Fluid supplied to the hollow member is distributed to the outlet ports by rotation of the member. Plastics dry bearings between the member and the sleeve act to prevent improper flow of air along the abutting surfaces. The vortex device comprises a member formed with a bore, the bore having a wide port into which the fluid is injected through the inlets and a restricted port forming a venturi of diameter of the order twice that of the yarn. A plug through which the yarn passes at the end of the bore remote from the venturi inhibits escape of air from that end.Type: GrantFiled: September 20, 1978Date of Patent: September 2, 1980Assignee: Platt Saco Lowell LimitedInventor: William M. Farnhill
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Patent number: 4183202Abstract: This present invention relates to a spun yarn having novel structure and a method of producing the same. The spun yarn of the present invention consists of a number of fibers arranged in a predetermined direction and twisted together, one end of which fibers is spirally wound around the surface of the yarn. The yarn of the present invention is spun by successively passing a sliver through a pneumatic yarn twisting device, untwisting tube, and false twisting device in turn. The twisting device, untwisting tube and false twisting device are disposed between front rollers and delivery rollers.Type: GrantFiled: October 7, 1976Date of Patent: January 15, 1980Assignee: Murata Kikai Kabushiki KaishaInventor: Toshihumi Morihashi
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Patent number: 4142354Abstract: Apparatus and method for directly obtaining a spun yarn from slivers. The apparatus comprises a drafting device for the sliver, a first fluid turning nozzle, a false twisting device rotating in a direction opposite to the turning direction of the fluid turning nozzle and a take-up means.Type: GrantFiled: September 21, 1977Date of Patent: March 6, 1979Assignee: Murata Kikai Kabushiki KaishaInventor: Teiju Nakahara
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Patent number: 4141121Abstract: An apparatus for producing a novel teased yarn having teased, hairy, fluffy, fuzzed character without loops resembling angora, alpaca and the like yarns from multifiber spun yarns of short to medium staple, and the resulting yarn produced thereby, wherein the yarn supplied has a yarn twist in a predetermined twist direction and is fed along a feed path through a yarn feed bore to a fluid vortex station and turbulence chamber station defined within a surrounding housing.Type: GrantFiled: August 3, 1977Date of Patent: February 27, 1979Assignee: Glen Raven Mills, Inc.Inventor: Alexander L. Trifunovic
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Patent number: 4124972Abstract: Method and apparatus suitable for producing a spun yarn at high speed from short fibers less than 50 mm. in length. A bundle of fibers having a particular thickness distribution in its width direction is supplied through a fluid jet false-twist nozzle in which a throttle portion connecting the upstream and downstream portions of the yarn passageway is provided non-eccentrically or eccentrically with respect to the downstream portion, and the downstream portion has a fluid conduit opening eccentrically there into and inclined toward the outlet end of the downstream portion. Air preferably containing water at room temperature in the form of mist is used as the fluid jetted through said nozzle.Type: GrantFiled: May 18, 1977Date of Patent: November 14, 1978Assignee: Toyo Bseki Kabushiki KaishaInventors: Yoshiyasu Arai, Meiji Anahara, Masanori Saka, Tokio Kokubu, Kunio Takeuchi
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Patent number: 4123893Abstract: Self-twist plural yarn strands are produced by a system wherein at least two singles yarn strands are individually twisted to form twisted strands each having longitudinally spaced nodes, and strands are brought together in a parallel relationship with the nodes of one strand substantially aligned with the nodes of each other strand. The corresponding nodes from one strand are fastened to those of each other strand, and the strands are allowed to ply. The node fastening means comprises a rotating member having a contact surface for fastening the nodes by gathering and twisting of the fibers from one strand with those of another strand at the nodes of each respective strand. Ply yarn twist uniformity is assured through the use of improved twist insertion jets, together with a means for holding singles yarns separate to allow longitudinal levelling of singles yarn torque prior to plying.Type: GrantFiled: June 29, 1977Date of Patent: November 7, 1978Assignee: Champion International CorporationInventors: Phillip W. Chambley, Alan H. Norris
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Patent number: RE31705Abstract: This present invention relates to a spun yarn having novel structure and a method of producing the same. The spun yarn of the present invention consists of a number of fibers arranged in a predetermined direction and twisted together, one end of which fibers is spirally wound around the surface of the yarn. The yarn of the present invention is spun by successively passing a sliver through a pneumatic yarn twisting device, untwisting tube, and false twisting device in turn. The twisting device, untwisting tube and false twisting device are disposed between front rollers and delivery rollers.Type: GrantFiled: January 15, 1982Date of Patent: October 16, 1984Assignee: Murata Kikai Kabushiki KaishaInventor: Toshihumi Morihashi