Pneumatic Patents (Class 19/205)
  • Publication number: 20100306966
    Abstract: An apparatus for cleaning foreign matter from separated tufts of fiber uses a transfer cylinder intermediate a revolving open reel type structure mounted within a porous housing to separate a conveying air stream from tufts of fiber conveyed thereby and a toothed cleaning cylinder to separate air flow through said revolving reel from said cleaning cylinder such that air is not drawn through said cleaning cylinder into said porous housing.
    Type: Application
    Filed: June 11, 2010
    Publication date: December 9, 2010
    Inventor: DONALD VAN DOORN
  • Patent number: 7779514
    Abstract: An apparatus for cleaning foreign matter from separated tufts of fiber uses a revolving open reel type structure mounted within a porous housing to separate a conveying air stream from tufts of fiber conveyed thereby and deliver the tufts to a toothed cleaning cylinder which passes beneath a plurality of cleaning bars. The open reel utilizes brush like outer surfaces to sweep tufts of fiber from the housing back into the air stream adjacent the cleaning cylinder.
    Type: Grant
    Filed: July 7, 2008
    Date of Patent: August 24, 2010
    Assignee: Lummus Corporation
    Inventor: Donald William Van Doorn
  • Patent number: 7234206
    Abstract: A connector (10) for a duct (1) for the pneumatic feeding of fibre to at least one carding machine (2) has an upstream portion (14) and a side duct (18) having a through opening (20) for fibre feeding to the carding machine (2). The connector comprises “stepped” means (22) for deflecting the stream of fibre, and lead-in bevels (41, 42) or a closing wall (100) inclined for the end-of-line connector, in order to even out the density of fibre sent to the carding machine.
    Type: Grant
    Filed: February 13, 2004
    Date of Patent: June 26, 2007
    Assignee: Marzoli S.p.A.
    Inventors: Mario Mascheretti, Claudio Locatelli
  • Patent number: 7082645
    Abstract: The invention is directed to method and apparatus for blending fibers. In one aspect, the apparatus comprises blending apparatus for blending fibers of different materials, at least one of which is absorbent, and for conveying the blended fibers to a fiber collection station. A first weighing apparatus weighs out a first quantity of first fibers at a first weigh station. A second weighing apparatus weighs out a quantity of second fibers at a second weigh station. The first and second quantities of fibers are conveyed to a blend opener having a beater roll rotatable in the blend opener. The beater roll opens and mixes the fibers. The fibers are entrained in an air stream by a pneumatic conveyor system and conveyed to a fine opener. The fine opener has a rotatable clothing roll to further open and mix the fibers. The pneumatic conveyor system is operable to separate fiber fines from longer fibers and to deliver the longer fibers to said fine opener.
    Type: Grant
    Filed: October 16, 2002
    Date of Patent: August 1, 2006
    Assignee: Kimberly-Clark Worldwide, Inc.
    Inventors: James J. Hlaban, Scott D. Dobslaw, Daniel J. Heuer, Michael K. Lewis, Stephen L. Nunn, Thomas P. Keenan, Richard W. Kubalek, Dale J. Fischer, Moshe Saraf
  • Patent number: 6880206
    Abstract: A device is provided for separating out foreign particles and/or neps in a pre-carding zone and/or a post-carding zone of a carding machine having a carding cylinder. The device has at least two modules arranged opposite the carding cylinder in the pre-carding zone and/or the post-carding zone. Each module has a plurality of operating elements, the elements being arranged beside one another as seen in a circumferential direction of the cylinder. The operating elements are fixed carding elements, suctioning devices, and/or separating knives.
    Type: Grant
    Filed: February 14, 2003
    Date of Patent: April 19, 2005
    Assignee: Trützschler GmbH & Co. KG
    Inventors: Gerd Pferdmenges, Robert Pischel
  • Patent number: 6564430
    Abstract: The invention relates to an apparatus for processing textile fibers, comprising a processing element having a first working surface substantially in the form of a regular cylinder surface and rotatable preferably around the axis of the cylinder, like a take-in roller of a card., and at least one carding element having a further working surface facing the first working surface, wherein the form of the further working surface approximates that of the first working surface on a plane vertically intersecting the axis of the cylinder.
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: May 20, 2003
    Assignee: Graf + Cie AG
    Inventor: Ralph A. Graf
  • Patent number: 6557214
    Abstract: The instant invention is directed to an arrangement for forming a stable fiber web having high loft and high resilience. The arrangement includes a cabinet receiving opened and blended fibers connected with a fiber web forming chute which receives the opened and blended fibers from the cabinet. The forming chute includes a first and second wall and fiber contacting elements which assist in urging the fibers through and out an exit of the chute in an evenly distributed condition while forming the fiber web. The fiber contacting elements include a fiber inter-engaging device associated with at least one of the first and second walls, said inter-engaging device acting said outer fibers causing these fibers to inter-engage creating a stable outer surface over the fiber web.
    Type: Grant
    Filed: April 22, 2002
    Date of Patent: May 6, 2003
    Inventor: Akiva Pinto
  • Patent number: 6460223
    Abstract: An apparatus for forming a non-woven fiber web of fibrous material which includes a mixing chamber from which the blended fibers are fed into the fiber web forming chute where they are formed into a fiber web. The web forming chute includes a packing belt and a vibrating assembly each driven at selected speeds to compact the fibers into a fiber web of desired density. Volume dependent controls within the web forming chute act to control the rate of the feed rolls and the beater roll while weight or density dependent controls outside the web forming chute act to control the rate of the packing belt, the vibrating assembly and the size of the fiber web forming chute.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: October 8, 2002
    Inventor: Akiva Pinto
  • Patent number: 6421883
    Abstract: A flock transportation device with a switching device for the flock stream includes a monitoring apparatus which detects the degree of contamination of the fiber material. The monitoring apparatus includes an evaluation device which determines the cleaning requirements of the detected material and which controls the switching device accordingly. A flock processing installation is contemplated with several transportation paths which comprise different treatment characteristics. Additionally, the flock processing installation can be controlled by way of a central control systems.
    Type: Grant
    Filed: November 22, 2000
    Date of Patent: July 23, 2002
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Christoph Stäheli, Jürg Faas, Ulf Schneider
  • Patent number: 6360403
    Abstract: A fiber material feeder includes a spiked lattice which has an upper and a lower end roller each having a longitudinal axis. The spiked lattice has an inclined, endless belt supported on the end rollers and a plurality of spikes carried at the outer belt surface and forming a series of consecutive rows extending along the belt width oriented parallel to the roller axes. The spike rows are oriented at an oblique inclination to the roller axes. Further, a drive is provided for circulating the endless belt about the end rollers for advancing fiber material, entrained by the spikes, upwardly toward the upper end roller. A scale including a weighing bin is provided for catching fiber material leaving the belt at the upper end roller.
    Type: Grant
    Filed: August 29, 2001
    Date of Patent: March 26, 2002
    Assignee: Trützschler GmbH & Co. KG
    Inventor: Bernhard Rübenach
  • Publication number: 20020026688
    Abstract: A fiber material feeder includes a spiked lattice which has an upper and a lower end roller each having a longitudinal axis. The spiked lattice has an inclined, endless belt supported on the end rollers and a plurality of spikes carried at the outer belt surface and forming a series of consecutive rows extending along the belt width oriented parallel to the roller axes. The spike rows are oriented at an oblique inclination to the roller axes. Further, a drive is provided for circulating the endless belt about the end rollers for advancing fiber material, entrained by the spikes, upwardly toward the upper end roller. A scale including a weighing bin is provided for catching fiber material leaving the belt at the upper end roller.
    Type: Application
    Filed: August 29, 2001
    Publication date: March 7, 2002
    Inventor: Bernhard Rubenach
  • Patent number: 6342083
    Abstract: A filter device (4) for a cheese-producing textile machine (1) having a plurality of pneumatic devices, e.g., open-end spinning devices (2), service units (3), etc. The filter device (4) has negative pressure filter chambers (6, 6′), each divided via a closure mechanism (9, 9′) into a main filter chamber (7, 7′) and a reserve filter chamber (8, 8′), and an intermediate chamber (14), to which a negative pressure source (5) is connected. Closable suction openings (12, 12′) and (13, 13′) in the main and reserve filter chambers, respectively, are connected with the intermediate chamber. The suction openings (12, 12′) and (13, 13′) are equipped with respective closure elements (15, 16) and (15′, 16′) which are functionally coupled such that, upon closure of one suction opening (12 or 12′), the other suction opening (13 or 13′) is automatically opened.
    Type: Grant
    Filed: January 26, 2000
    Date of Patent: January 29, 2002
    Assignee: W. Schlafhorst AG & Co.
    Inventor: Michael Spitzer
  • Patent number: 6327745
    Abstract: A fiber processing assembly includes a fiber processing machine having an inlet and an outlet; an arrangement for introducing fiber material into the fiber processing machine through the inlet; a fiber opening and cleaning machine having an inlet and an outlet and being disposed underneath the fiber processing machine; and an arrangement for advancing the fiber material from the fiber processing machine to the fiber opening and cleaning machine substantially solely by gravity.
    Type: Grant
    Filed: August 30, 2000
    Date of Patent: December 11, 2001
    Assignee: Trützschler GmbH & Co. KG
    Inventor: Christian Franke
  • Patent number: 6314619
    Abstract: A multiple slot jet cleaner for removing the small particles of foreign matter that remains with cotton lint after separating the cotton from the seeds and larger foreign matter. The multiple slot jet cleaner uses a series of slots in the wall of a curved conduit used for transporting air having a mixture of cotton and trash. Additional air enters the conduit through the first slot at one of the curves and a portion of the trash exits out the slot due to the turbulence created by the entering air and the effect of the curved conduit. After the slot, some or all of the additional air is removed from the conduit through a discharge opening and then conveyed to a fan where it is delivered to other slots for injection into the conduit to repeat the process for the first slot. In this manner, the operator of the jet cleaner can obtain the benefits of the increased injection of air without the problems associated with handling that air in equipment downstream of the jet cleaner.
    Type: Grant
    Filed: August 4, 2000
    Date of Patent: November 13, 2001
    Assignee: Vandergriff, Inc.
    Inventor: Arvel L. Vandergriff
  • Patent number: 6317645
    Abstract: A suction-air system of a textile machine, especially a rotor spinning machine, has at least one suction-air conduit, at least one spark sensor for detecting flying sparks within a measuring extent of the suction-air, the sensor including a measuring device with a sensing range at least partially overlapping the measuring extent, at least one electromagnetic wave receiver for generating an output signal when a spark enters the sensing range, and a driver and evaluation circuit for the measuring device. At least one source for generating electromagnetic waves is associated with the receiver and actuates a purposeful initiation of the spark sensor.
    Type: Grant
    Filed: July 7, 1999
    Date of Patent: November 13, 2001
    Assignee: W. Schlafhorst AG & Co.
    Inventors: Gerd Jansen, Stephan Weuthen, Karl Kemps
  • Patent number: 6263545
    Abstract: An apparatus for forming a non-woven fiber baft of fibrous material which includes a housing connecting with a plurality of feed chutes which feed fibers from a plurality of sources into a mixing chamber. Feed rolls, adjacent each discharge end of the feed chutes, are driven at selected speeds to withdraw fibers from the feed chutes at selected rates. A combing roll within the mixing chamber acts to assist the fibers from the mixing chamber into a beater chamber where they are further blended and opened. From the beater chamber the fibers move into a batt forming chute where they are formed into a fiber batt. The batt forming chute includes a packing belt and a vibrating assembly each driven at selected speeds to compact the fibers into a fiber batt of desired density.
    Type: Grant
    Filed: February 17, 2000
    Date of Patent: July 24, 2001
    Inventor: Akiva Pinto
  • Patent number: 6260239
    Abstract: An apparatus for making a fiber lap from a mass of fiber tufts includes a generally vertically extending feed chute having relatively wide first and second walls facing one another and relatively narrow third and fourth walls facing one another. The distance between the third and fourth walls defines the width of the feed chute. Each first and second wall has a mid region and flanking edge regions. The first and/or second wall is provided with air outlet openings in a bottom region. The apparatus further has a device for charging the feed chute with fiber tufts at a top portion thereof, and a device for withdrawing the fiber tufts from the feed chute as a fiber lap at a bottom portion of the feed chute. A plurality of side-by-side arranged elements are positioned in a series on the first wall at a bottom portion thereof along the wall width. The distance between any given element and the second wall defines the depth of the feed chute at the given element.
    Type: Grant
    Filed: May 22, 2000
    Date of Patent: July 17, 2001
    Assignee: Trützschler GmbH & Co. KG
    Inventor: Bernhard Rübenach
  • Patent number: 6249935
    Abstract: A fiber processing machine includes a rotatably supported clothed opening roll; a withdrawing roll adjoining the opening roll and supported for rotation for forwarding the fiber material to the opening roll; an optical sensor system for detecting foreign material carried on the opening roll along with fiber material; an air stream generating device for directing an air blast to the clothing of the opening roll; a control-and-regulating device to which the optical sensor system and the air stream generating device are connected for operating the air stream generating device upon detecting foreign material by the optical sensor system to remove and carry away the foreign material from the clothing of the opening roll by an air stream; and a collecting chamber for receiving the air stream carrying the foreign material.
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: June 26, 2001
    Assignee: Trützschler GmbH & Co. KG
    Inventor: Ferdinand Leifeld
  • Patent number: 6212736
    Abstract: A tube density separator and method for use in a cotton gin to separate cotton from a pneumatically conveyed mixture of cotton and foreign materials has a generally vertical tube for receiving the mixture and separating out the foreign material from the cotton. The bottom of the tube is larger than the outlet of the pipe transporting the mixture so the velocity of the flow will be reduced and turbulence created. This action causes the heavier foreign matter to separate from and drop out of the cotton/foreign matter mixture. One or more dispersal rods are placed inside the tube to interact with the flow of material up the tube. The dispersal rods further break apart the clumps and wads of cotton and foreign matter to facilitate the separation action. The separated out foreign matter is collected at the inlet area of the tube. A supply of air, which can be skimmed from the air flow up the tube, conveys away the foreign matter from the tube.
    Type: Grant
    Filed: January 25, 2000
    Date of Patent: April 10, 2001
    Assignee: Vandergriff, Inc.
    Inventor: Arvel L. Vandergriff
  • Patent number: 6101679
    Abstract: A device and process for dividing a pneumatic flow of fiber into a plurality of streams of pneumatically-conveyed fiber which aid in distributing the fiber more uniformly across an area such as a fiber bin.
    Type: Grant
    Filed: September 30, 1998
    Date of Patent: August 15, 2000
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Kenneth Stephen Freund, Todd Arden McCoy
  • Patent number: 6058567
    Abstract: An arrangement for sorting a first category of fibers having a first set of properties into at least a second category of fibers having a second set of properties and a third category of fibers having a third set of properties. The arrangement comprises a sorting channel including at least one travelling teeth laden carrier surface driven in a first direction within the sorting channel. The sorting channel further includes at least a first inlet and at least first and second outlets. A first energy field flows through the sorting channel in a second direction. The first category of fibers are plied to the travelling teeth carried on the driven carrier surface and the first energy field causes at least the longer fibers from the first category to be held latched onto the travelling teeth as it washes and strips away shorter fibers and impurities producing the second category of fibers.
    Type: Grant
    Filed: June 17, 1997
    Date of Patent: May 9, 2000
    Inventor: James H. Roberson
  • Patent number: 6058568
    Abstract: A flat-head carder, equipped in the tangential area between the main drum and briseur with a fiber-guiding wedge fitted with a discharge opening provided at a tangential direction to the surface of the drum and prior to their tangency, connected to an aspirating nozzle.
    Type: Grant
    Filed: October 15, 1998
    Date of Patent: May 9, 2000
    Assignee: Fratelli Marzoli & C SpA
    Inventors: Giovanni Battista Pasini, Silvano Patelli
  • Patent number: 6058569
    Abstract: Unit for opening and separation of the impurities, for machines for opening or carding of flock textile material, comprising separator blades for the removal of the impurities, consisting of a triangular cutting blade, which is mounted on the support with its inner surface disposed according to a small angle, relative to the tangent to the surface of the covering, and with the vertex disposed downstream from the motion of the cylinder.
    Type: Grant
    Filed: April 22, 1999
    Date of Patent: May 9, 2000
    Assignee: Marzoli S.p.A.
    Inventors: Emilio Vezzoli, Giovanni Battista Pasini
  • Patent number: 5933921
    Abstract: The position of foreign matter in a bale pattern after its separation in a separating device (10) may be evaluated in that the relative position of the opening device (1) and the transport time of the fibers between the opening device (1) and the separating device (10) is determined in each relative position. Given a separating procedure, taking account of the mentioned variables, the position of the opening device (1) at the point in time of opening the foreign matter (28) is evaluated. The determined opening position of the foreign matter on the fiber bales (27) is stored as a signal and subsequently preferably graphically represented. The method permits conclusions on the degree of contamination of the fiber bales.
    Type: Grant
    Filed: June 15, 1998
    Date of Patent: August 10, 1999
    Assignee: Jossi Holding AG
    Inventor: Armin Jossi
  • Patent number: 5933920
    Abstract: A high slippage feeder for conveying seed cotton from a rotary vacuum of a cotton gin includes a cylinder rotating about an axis with a plurality of pins radially extending from the cylinder and a casing enclosing the cylinder and the pins. The casing has a first inlet for receiving the seed cotton from the rotary vacuum, a second inlet for receiving an air stream, and an outlet for providing an exit for the air stream and the seed cotton. A portion of the casing is curved to conform to an outer circumference defined by the rotation of the pins, and a portion of the second inlet is inwardly deflected to focus the direction of the air stream. The casing, as shaped, maximizes the operational efficiency of the high slippage feeder and not only improves the conveyance of cotton but also ensures that a majority of the cotton conveyed through the high slippage feeder will be partially dried.
    Type: Grant
    Filed: April 9, 1998
    Date of Patent: August 10, 1999
    Inventor: William E. Winn
  • Patent number: 5890264
    Abstract: An aeromechanical individualizer for individualizing entities within a fiber sample includes a cylindrical rotating beater wheel, having a non-permeable cylindrical surface and having carding elements, such as pins or wire points, on the cylindrical surface. A cylindrical feed roller and feed plate supply the fiber sample to the beater wheel in the form of a beard at a first point along the rotational path thereof. A nozzle directs a gas flow across the feed plate and the beard such that fibers are dragged from the feed plate into engagement with the carding element. At a second point along the rotational path of the beater wheel there is a doffer for removing entities of the beater wheel. An enclosure surrounds the beater wheel and substantially prevents the ingress or egress of the gas except gas flow which enters via the nozzle at the first point and which exits at the second point.
    Type: Grant
    Filed: October 6, 1997
    Date of Patent: April 6, 1999
    Assignee: Premier Polytronics Limited
    Inventors: Frederick M. Shofner, Christopher K. Shofner
  • Patent number: 5845367
    Abstract: A double-cylinder opener for staple fiber being pneumatically transported in an air stream, the two cylinders being parallel and mutually offset, the fibers passing firstly about the first cylinder and then about the second cylinder with spiral motion, the two cylinders forming two beaters of different action, which rotate at different velocities and are provided with different spike population densities.
    Type: Grant
    Filed: July 9, 1997
    Date of Patent: December 8, 1998
    Assignee: Fratelli Marzoli & C. S.p.A.
    Inventors: Emilio Vezzoli, Giovanni Battista Pasini
  • Patent number: 5819373
    Abstract: An apparatus for detecting a foreign substance in a pneumatically advancing fiber tuft stream and for separating the foreign substance therefrom includes a conduit; an optical sensor arrangement situated at a first location of the conduit for detecting a foreign substance in flight and for emitting signals representing the foreign substance; a separating arrangement situated at a second location of the conduit downstream of the first location as viewed in the conveying direction; an evaluating device for processing the signals; and a control device connected to the optical sensor arrangement, the separating arrangement and the evaluating device for operating the separating arrangement.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: October 13, 1998
    Assignee: Trutzschler GmbH & Co. KG
    Inventors: Stefan Schlichter, Michael Cieslinski
  • Patent number: 5623749
    Abstract: An apparatus for feeding fiber tufts to a fiber processing textile machine includes a feed chute having upper and lower ends; a densifying air stream generating arrangement for introducing an air stream into the feed chute to densify the fiber tufts therein; a screen forming part of a lower region of the feed chute for separating the air stream from the fiber tufts; an air removal hood immediately adjoining the screen externally of the feed chute; and an arrangement for forcing the air stream through the screen openings out of the feed chute into and through the air removal hood.
    Type: Grant
    Filed: September 28, 1995
    Date of Patent: April 29, 1997
    Assignee: Trutzschler GmbH & Co. KG
    Inventors: Ferdinand Leifeld, Ralf Meger, Armin Leder
  • Patent number: 5613279
    Abstract: An apparatus for removing contaminants from raw cotton traveling in an airstream includes a drum which is rotatably driven and mounted to a frame with the drum having a plurality of openings through, and further includes an assembly for directing the raw cotton against the drum, a first suction assembly for drawing contaminants from the cotton which is retained on the cotton collecting surface in a cotton impingement zone, a second suction arrangement for drawing cleaned raw cotton away from the cotton collection surface and including a cotton retention zone wherein the second suction airstream is opposed to the first suction airstream and a cotton release zone wherein the second suction airstream is assisted by atmospheric air in removing clean cotton from the cotton collection surface of the rotatable drum and delivering it to a clean cotton reservoir.
    Type: Grant
    Filed: February 16, 1996
    Date of Patent: March 25, 1997
    Assignee: Kings Mountain Textile Machinery Company
    Inventor: Ralph H. Rhyne
  • Patent number: 5343597
    Abstract: In a device for opening and cleaning fiber material with two opener rolls (2,4) rotating in the same direction and each being supported in a housing (3) side by side in parallel in a horizontal plane above grate segments (12, 14). The circles of action of the rolls almost contact in the horizontal, with a feeder (8) directed tangentially onto the one end of the first opener roll (2) in the fiber transport direction An outlet (30) protrudes horizontally from the housing (3) on the side of the housing (3) opposite the feeder (8) , through which an air flow (6, 34) feeds and discharges the fiber material, respectively. It is provided that, via the feeder (8), the fiber material is directed vertically from above between the housing (3) and the opener roll (2) onto that side of the first opener roll (2) facing away from the second opener roll (4).
    Type: Grant
    Filed: May 21, 1992
    Date of Patent: September 6, 1994
    Assignee: Hergeth Hollingsworth GmbH
    Inventors: Akiva Pinto, Guenter Lucassen, Manfred Scholbrock
  • Patent number: 5319830
    Abstract: A fiber cleaning machine has a horizontal roller (1) fitted with beater rods (4, 5). Bar grates (4, 5) are arranged under the lower side of the roller. Over the upper side of the roller (1), an inlet (9) opens out at one end of the roller (1), and an outlet (10) opens out at the other end for a current of delivery air for transporting the fibers in flock form. Between the inlet (9) and the outlet (10), sheet metal deflectors (11) are arranged obliquely over the upper side the roller (1) to provide transfer chambers which move the current of delivery air in the direction of the axis of the roller (1). Cooperating with the transfer chambers is a partition (30) which is permeable to air and dust and which is a wall of a low-pressure chamber (20). Not only can coarser impurities be separated through the bar grates (4, 5), but also finely divided impurities may pass through the permeable partition (30) into the low-pressure chamber (20) where they are sucked into a suction pipe (15).
    Type: Grant
    Filed: March 22, 1991
    Date of Patent: June 14, 1994
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Paul Staheli
  • Patent number: 5287599
    Abstract: An apparatus for separating foreign matter from a pneumatically conveyed stream of textile fibers has a pneumatic duct in which the textile fibers are conveyed by an air stream; a waste container; first and second coupling openings for maintaining communication between the waste container and the pneumatic duct; and a gate pivotally supported in the pneumatic duct. The gate has a first position maintaining open the pneumatic duct and obturating the first and second coupling openings for allowing the fiber material to be conveyed by the air stream through the duct by bypassing the waste container. The gate further has a second position obturating a direct passage through the pneumatic duct and maintaining open the first and second coupling openings for directing the fiber material and the air stream from the pneumatic duct into the waste container and for allowing conveying air to pass from the waste container back into the pneumatic duct.
    Type: Grant
    Filed: September 18, 1992
    Date of Patent: February 22, 1994
    Assignee: Trutzschler GmbH & Co. KG
    Inventor: Ferdinand Leifeld
  • Patent number: 5247722
    Abstract: An apparatus for pneumatically delivering fiber tufts to a fiber processing machine includes a duct; a blower having a pressure side communicating with the duct for pneumatically driving fiber tufts therein in a stream M.sub.1 ; a branch conduit extending from the duct at a branch-off location situated downstream of the blower as viewed in a direction of flow of the stream M.sub.1 for separating a stream M.sub.3 from the stream M.sub.1, leaving a stream M.sub.2 to proceed in the duct downstream of the branch-off location; and a flow varying arrangement for changing a flow rate of the stream M.sub.3 in the branch conduit. The flow varying arrangement has a throttle mechanism situated in the branch conduit.
    Type: Grant
    Filed: April 24, 1992
    Date of Patent: September 28, 1993
    Assignee: Trutzschler GmbH & Co. KG
    Inventor: Ferdinand Leifeld
  • Patent number: 5237727
    Abstract: A method for enabling the cleaning of fibers in a fiber cleaning machine in which a cleaning stream moves tufts around a rotating cleaning cylinder, the tufts being cleaned and opened. The cleaning action can be adapted to fibers of varying origin and to an increasing degree of opening in the course of cleaning. The cleaning stream is, to a large extent, controlled and controllable by decoupling it from the dynamic behavior of the transport streams which transport material to and away from the cleaning process. Compensation for variations in the cleaning stream, and in the material supplied for cleaning, are achieved by control of the cleaning intensity, in order that the tufts emerging from the cleaning process are constant and optimally cleaned and opened. The invention concerns also suitable fiber cleaning apparatus for the realization of the described method. The apparatus includes a cleaning cylinder positioned in a casing and a plurality of cleaning elements extending from the cylinder.
    Type: Grant
    Filed: June 28, 1991
    Date of Patent: August 24, 1993
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Jurg Faas, Paul Staheli, Rene Schmid, Ulf Schneider, Peter Anderegg, Robert Demuth, Jorg Koller, Martin Kyburz
  • Patent number: 5226213
    Abstract: A maintenance-free valve for impeding the flow of fibers in a high velocity air-fiber stream. The valve has a rake-like construction to impede fiber flow when in the closed position. The valve has a plurality of closely-spaced, parallel tines attached to a rotatable shaft that is perpendicular to the tines. When closed, fibers collect on the tines of the rake valve, blinding the valve to further fiber flow. When opened, the fibers are dislodged from the tines such that they re-enter the air-fiber stream.
    Type: Grant
    Filed: September 24, 1991
    Date of Patent: July 13, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: James R. Lewis, David E. Wilson
  • Patent number: 5224243
    Abstract: The cleaning or blow room line comprises at least one bale opening machine connected by ducts and at least one cleaning machine and a blender with a plurality of cards. The transport of the fiber flocks extracted by the at least one bale opening machine through the cleaning line is achieved by suction ventilators provided for such cleaning line. After at least one cleaning location a pressure sensor is arranged in an associated duct and delivers a signal to a control or regulator which controls or regulates, as the case may be, the size of a false air opening which co-dictates the air flow through the ducts. The false air opening can be constructed as an adjustable element in the form of a hinged flap or a slide element positioned relative to an opening in a duct, whereby the regulator controls the extent to which the flap or slide member is pivoted or slid, thereby adjusting the amount of air that is drawn into the duct.
    Type: Grant
    Filed: August 16, 1991
    Date of Patent: July 6, 1993
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Walter Schlepfer, Werner Hauschild, Jurg Faas, Rene Waeber, Robert Demuth
  • Patent number: 5205019
    Abstract: An apparatus for separating foreign bodies from a stream of fiber material includes a vertical chute having an upper inlet and a lower outlet; a mechanism for introducing the fiber material into the chute inlet; and a detector positioned in the chute for emitting a sensor signal upon passage of a foreign body. The fiber material is propelled from the detector towards the chute outlet substantially solely by gravity. The apparatus further has a waste discharge opening provided in the chute between the detector and the chute outlet; a deflecting mechanism arranged in the chute and having first and second positions. In the first position the deflecting mechanism causes the stream of fiber material to proceed in the chute to and through the chute outlet and in the second position the deflecting mechanism causes the stream of fiber material to proceed through the waste discharge opening.
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: April 27, 1993
    Assignee: Trutzschler GmbH & Co. KG
    Inventors: Stefan Schnlichter, Ferdinand Leifeld
  • Patent number: 5203052
    Abstract: A noise supression box is secured over the air inlet opening in the housing of a fiber opening machine which contains a plurality of rotatable opener rolls that open and feed fibers to an outlet formed in the housing adjacent its air inlet opening. The box surrounds in spaced relation thereto an air inlet duct which is secured at one end over the air inlet opening and communicates at its opposite end with the exterior of the box and housing. The walls of the air inlet duct contain a plurality of spaced perforations, and the space in the box around the outside of the duct is filled with sound absorbing foam insulation.
    Type: Grant
    Filed: June 17, 1991
    Date of Patent: April 20, 1993
    Assignee: Phoenix Associates
    Inventors: William M. Hardy, Michael A. Ruffalo
  • Patent number: 5155886
    Abstract: An arcuate baffle wall is provided within a conventional lint cleaner forward of and horizontally registered with the front side of the saw cylinder of the lint cleaner. The upper and lower extremities of the baffle wall are generally horizontally registered with the upper and lower extremities of the saw cylinder and the baffle wall is spaced generally midway between the forward periphery of the saw cylinder and the front wall section of the lint cleaner to thereby define a venturi passage for air flow at appreciably increased velocity downward over the grid bars of the lint cleaner spaced about the forward peripheral portion of the saw cylinder. The venturi passage greatly increases the velocity of air flow past the grid bars and prevents the build up of cotton lint thereon to the extent that tangential outward displacement of dirt from the saw cylinder is blocked.
    Type: Grant
    Filed: July 11, 1991
    Date of Patent: October 20, 1992
    Assignee: Texoma Machine, Inc.
    Inventors: Kenneth D. Schrader, James A. Nichols
  • Patent number: 5146653
    Abstract: A suction chamber for machines for opening and cleaning textile fibers is subdivided into at least two parts. One part of the chamber is mounted swivelably relative to the other part. Therefore, a drum of the machine and the suction chamber become easily accessible.
    Type: Grant
    Filed: May 9, 1991
    Date of Patent: September 15, 1992
    Inventor: Hubert Hergeth
  • Patent number: 5123145
    Abstract: A method and apparatus for cleaning textile fibers for use in conjunction with an opening roller to which the textile fibers are fed and around which the textile fibers are conveyed, in the form of a fiber bat, in a transport direction. The apparatus includes an arrangement for conveying the textile fibers from an inlet to a clamping point proximate the opening roller; compressing and clamping the textile fibers, in the form of a fiber bat, with a clamping force, the clamping force having a magnitude which is a function of a characteristic of the fiber bat; drawing the fiber bat from the clamping point to a takeover point on a periphery of the opening roller, the fiber bat then being subjected to centrifugal force due to rotation of the opening roller; conveying the fiber bat, under the influence of the centrifugal force, to a separating blade; and separating an area of the fiber bat having contaminants concentrated therein resulting from the centrifugal force and from the drawing of the fiber bat.
    Type: Grant
    Filed: September 21, 1990
    Date of Patent: June 23, 1992
    Assignee: Rieter Machine Works Ltd.
    Inventors: Heinz Schelb, Paul Staheli, Ulf Schneider, Jurg Faas, Robert Demuth, Bohler Rolf
  • Patent number: 5095588
    Abstract: The fiber opening machine has an opening drum with adjacent trough, which receives fibers from a feeding device with feeding rollers. The fiber opening machine has a suction chamber for generating an air current to remove open fibers from the opening drum. The suction chamber is defined by the output side of the opening drum and an opposing suction chamber wall which is shaped to form a biconcave space through which a current of air is passed to remove the fibers from the opening drum so that fibers are removed from the drum without nep formation at rotational speeds which are higher than those attainable without the biconcave space.
    Type: Grant
    Filed: April 17, 1991
    Date of Patent: March 17, 1992
    Inventor: Hubert Hergeth
  • Patent number: 5044046
    Abstract: In a blending device (1) for textile fibers, e.g. fiber flocks of cotton, comprising a fiber collecting device into which disintegrated fiber flocks drop after blending. A horizontal suction channel (10) is arranged at a lower end of the collecting device in which an airflow is created which transports the fiber flocks. The suction channel (10) has a waste collecting chamber (21) arranged in the entrance opposite the fiber collecting device. The waste collecting chamber is separated from the suction channel (10) by a grate (16) arranged in a plane of the surface of the suction channel, and the airflow in the entrance of the fiber collecting device sorts the fiber flocks in a transverse flow which transports the textile fibers down the suction channel while allowing the heavier trash and impurities to fall through the grate (FIG. 2).
    Type: Grant
    Filed: April 16, 1990
    Date of Patent: September 3, 1991
    Assignee: Hergeth Hollingsworth GmbH
    Inventors: Akiva Pinto, Guenter Lucassen
  • Patent number: 5018247
    Abstract: A machine for cleaning textile fibres including a casing, a horizontal opening roller rotatably mounded in the casing, the roller body having a roller body and beater rods protruding from the peripheral area of the roller body and bar grates arranged below the underside of the opening roller. Textile fibres in the form of flocks are conveyed in a delivery air stream through an inlet which is arranged at a first end of the opening roller. An outlet for egress of the delivery air stream is arranged at the other end of the opening roller. In one arrangement, the radial length of the beater rods decreases from the inlet to the outlet and the diameter of the roller body increases from the inlet to the outlet. This arrangement allows the opening of the fibre flocks to be improved and permits a more complete separation of impurities through the bar grates.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: May 28, 1991
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Ulf Schneider, Rene Schmid
  • Patent number: 5014396
    Abstract: In a method for manufacturing the fiber-containing article, the discontinuous fibers, intermingled with fibers serving as a binder, are couched into a fiber mat in such a manner that the discontinuous fibers are advanced into contact with an air flow which carries them up to a conveying level where the fibers become randomly directed and the fiber-carrying air flow is passed through this level.
    Type: Grant
    Filed: February 15, 1989
    Date of Patent: May 14, 1991
    Assignee: Oy Scanwoven Ab
    Inventor: Jorma Nieminen
  • Patent number: 4977645
    Abstract: A system for removing foreign metal bodies from a pneumatically conveyed stream of fiber material includes a fiber conveying duct in which the fiber material is pneumatically advanced; a branch-off location in the duct; a branch conduit joining the duct at the branch-off location; a metal detector for ascertaining the presence of a foreign metal body in the stream of fiber material at a sensing location upstream of the branch-off location; a channelling device arranged in the branch-off location for selectively directing the fiber stream into the branch conduit or, respectively, causing the fiber stream to continue travel in the duct past the branch-off location; a control device operatively connected to the metal detector and the channelling device for moving the channelling device into a removal position upon ascertaining the passage of a foreign metal body by the detector; and at least one bend in the duct for changing the direction of travel of fiber material in the duct.
    Type: Grant
    Filed: July 24, 1989
    Date of Patent: December 18, 1990
    Assignee: Trutzschler GmbH & Co. KG
    Inventor: Fritz Hosel
  • Patent number: 4969237
    Abstract: A machine for cleaning textile fibres includes a horizontal rotating roller with beater elements and bar grates on the underside of the roller. Delivery air transports the textile fibres in the form of flocks through an inlet which is arranged above the upper side and at one end of the roller. An outlet for the air transporting the fibres is located above the upper side and at the other end of the roller. Between the inlet and the outlet at least three, preferably five transfer chambers are located over the upper side of the roller, each of which lead the air stream passing around the roller axis further in the axial direction of the axis by about the width in the axial direction of the chamber. The transfer chambers are defined by four, preferably six deflectors inclined by an ascending angle with respect to the axis of the roller.
    Type: Grant
    Filed: January 31, 1990
    Date of Patent: November 13, 1990
    Assignee: Maschinenfabrik Rieter AG
    Inventor: Rene Schmid
  • Patent number: 4964196
    Abstract: A coarse cleaning machine for textile fibres including a casing, a horizontal roller rotatably mounted in the casing, the roller being fitted with beater elements and bar grates are arranged on the underside of the roller. Located above and at one end of the roller is an inlet which carries delivery air for conveying the textile fibres in the form of flocks and an outlet is located above and at the other end for the roller. Deflectors which are inclined with respect to the roller axis are arranged above the upper side of the roller between the inlet and the outlet. The deflectors define transfer chambers which deflect the delivery air further in the direction of the axis of the roller. At least part of the transfer chambers are covered by a wall which is permeable to air and dust and a low pressure chamber connected to a suction pipe is located above the wall.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: October 23, 1990
    Assignee: Maschinenfabrik Rieter AG
    Inventors: Rene Schmid, Jurg Koller
  • Patent number: 4866815
    Abstract: Apparatus for separating waste particles from a textile fiber flow is disclosed which includes a housing (2, 22, 34) with a deviation zone (4) and separation zone (6). Following the deviation zone is a fiber flow discharge channel (5). Following a separation means (10, 11, 23) is a waste chamber (7) for removing large and small particles of waste. The waste particle separation device includes a plurality of rod elements (10, 11) which are curved to guide lighter particles upwardly to prevent adherence to the separating element. Larger particles pass through openings between the rod-like elements to the collection chamber. Communication between the fiber flow and the waste flow may be had by using a valve member (27, 35) to intermittently connect a collection channel (25) with a suction removal source (8) via waste chamber (7).
    Type: Grant
    Filed: September 8, 1988
    Date of Patent: September 19, 1989
    Assignee: Hergeth Hollingsworth GmbH
    Inventors: Guenter Lucassen, Akiva Pinto, Reinhard Schmidt