Patents Assigned to Rieter Machine Works
  • Method of operating a texturing nozzle
    Patent number: 4999890
    Abstract: The texturing nozzle is supplied with a heating medium such as hot air during a start-up phase for preheating of the nozzle and the associated parts of the texturing machine. After a predetermined temperature has been reached, superheated steam is delivered via change-over valve and a heater to the nozzle to carry out a texturing operation therein. The changeover valve may be operated to switch over to hot air during a running-down phase of the machine.
    Type: Grant
    Filed: August 1, 1989
    Date of Patent: March 19, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Werner Nabulon
  • Card having a transverse conveyor with a trapezoidally cross-sectioned shoulder, for conveying a web laterally away from the card
    Patent number: 4998325
    Abstract: The card for producing a fiber includes a swift and a doffer which takes the carded fibers off the swift and supplies them to a nip formed between at least two rotating rollers. The fiber web emerging from the nip is deposited on the top run of a transverse conveyor which moves axially of the rolls between guide rollers in order to convey the fiber web laterally away from the card. The conveyor has a shoulder on at least one longitudinal side against which the fiber web may abut during travel along the transverse conveyor.
    Type: Grant
    Filed: August 16, 1989
    Date of Patent: March 12, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Paul Staheli, Giuseppe Verzilli
  • Flat cleaning apparatus for a card
    Patent number: 4996746
    Abstract: The flat cleaning apparatus employs a comb for loosening fibers and dirt particles carried by the revolving flats of the revolving flat clothing. In addition, a casing which travels across the width of the revolving system has a suction nozzle for drawing up the loosened strips of fibers and dirt particles. In addition, a brush is provided downstream of the suction nozzle which is movable relative to the flats to clean between the flats so as to release deep-seated dirt after the strips are removed. The brush is mounted in a chamber which communicates with the suction nozzle so that a suction force is available for removing the deep-seated dirt brought up by the brush.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: March 5, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Giuseppe Verzilli, Robert Demuth
  • Combing machine
    Patent number: 4996747
    Abstract: The combing machine has at least one combing head having combing elements and a carrier for a lap roll for combing. Two pairs of transport rollers and a pair of pressing rollers are provided in the path of the lap from the lap roll to the combing elements. A movable deflector or element is also disposed adjacent the pressing rollers for a lap end. An automatic lap change is carried out when the lap has approximately completely unwound from the roll. The transport roller pairs are used to tear the lap therebetween with the resulting lap end advancing to the pressing rollers which is then stopped. After a fresh lap roll is placed in the machine, the forward end of the lap is moved between the transporting rollers and severed to form a second lap end. The deflector element serves to place the end of the fresh lap onto the previous lap end for combining within the pressure rolls.
    Type: Grant
    Filed: November 3, 1989
    Date of Patent: March 5, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Fredy Wichtermann, Gian-Carlo Mondini
  • Apparatus for removing fiber flocks from a line of fiber bales
    Patent number: 4995142
    Abstract: The removal roll carrier can be inclined at an angle while the carrier is simultaneously moved vertically and while the removal apparatus moves over the line of fiber bales. This has the advantage that flocks can be removed from the bales not only in the horizontal direction but also in an inclined direction. A microprocessor controls the pivoting of the removal apparatus into a predetermined inclined position while simultaneously moving the removal apparatus vertically during movement of the machine frame along the path of the fiber bales.
    Type: Grant
    Filed: February 3, 1989
    Date of Patent: February 26, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Rolf Binder, Daniel Hanselmann
  • Ring spinning machine
    Patent number: 4987734
    Abstract: The ring spinning machine has separate drives for the spindles, the delivery rollers and the other rollers of the drafting device. The inverters of the corresponding drive motors are fed from a D.C. intermediate circuit so that all the drives stop simultaneously, thus obviating thread breakages. A disc brake is electrically coupled to the intermediate circuit to prevent rotation of the delivery roller of the drafting device.
    Type: Grant
    Filed: February 10, 1989
    Date of Patent: January 29, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Urs Meyer
  • Combing machine with workstations having a monitoring unit at each workstation
    Patent number: 4987648
    Abstract: The combing machine is provided with a plurality of workstations each of which is provided with a table containing a funnel through which a combed web is formed into a sliver. Each table is pivotally mounted on a fixed shaft and a monitoring unit is provided to detect the rotation of the table about the shaft in response to a thick or thin place in the combed web passing through the funnel.
    Type: Grant
    Filed: April 19, 1989
    Date of Patent: January 29, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Heinz Clement
  • Apparatus for cleaning a card
    Patent number: 4985966
    Abstract: The cleaning apparatus has an air main mounted on a movable frame which can be brought against the side of a card. The air main includes a plurality of suction orifices which can be brought into registry with deformable air outlets at the side of the card which communicate via air lines with extraction stations of the card.
    Type: Grant
    Filed: April 20, 1989
    Date of Patent: January 22, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Heinz Nitschke, Werner Hauschild
  • Adjustable grid for the extraction arm of a bale-opener machine
    Patent number: 4984336
    Abstract: An adjustable grid for the extraction arm of a bale-opener machine for adjusting the depth of penetration of drivable fiber extraction elements extending between the grid bars which are substantially tranversely arranged relative to the longitudinal direction of the extraction arm, has the grid bars biased by the spring devices into an abutment position corresponding to a minimum depth of penetration of the extraction elements. The spring force is selected such that the moveably arranged grid bars are displaced, in accordance with the bale hardness, in the direction of increasing depth of penetration of the extraction elements into a position which at least approximately corresponds to the appropriate depth of penetration of the extraction elements.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: January 15, 1991
    Assignee: Rieter Machine Works Ltd.
    Inventors: Daniel Hanselmann, Walter Schlepfer, Jost Aebli
  • Grinding device and method for grinding card clothing
    Patent number: 4984395
    Abstract: The grinding device is constructed with a grinding member which is biased elastically against the teeth of the clothing of a carding machine during operation of the machine. During grinding, the grinding member is capable of three degrees of freedom of movement under the elastic biasing force. In one embodiment, individual grinding stones are used as the grinding members. In another embodiment, an elongated flexible belt having a grinding coating is used as the grinding member and is biased by means of a tube containing pressurized fluid.
    Type: Grant
    Filed: December 16, 1988
    Date of Patent: January 15, 1991
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Robert Demuth
  • Flock delivery systems
    Patent number: 4979271
    Abstract: A flock extraction apparatus includes a pair of ducts which extend along a track for conveying fiber flock and a diverter chamber at one end of the ducts for directing the flock into one or the other of a pair of transport ducts extending from the diverter chamber. Plates are used to block communication between the diverter chamber and the respective transport ducts as well as to sub-divide the diverter chamber for communication with a respective duct extending along the track.
    Type: Grant
    Filed: November 21, 1989
    Date of Patent: December 25, 1990
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Rolf Binder, Daniel Hanselmann, Walter Schlepfer, Christoph Staeheli
  • Method for replenishing fiber bales in an opening machine
    Patent number: 4979272
    Abstract: The method provides for the replenishment of fiber bales to at least one row of fiber bales disposed on a spinning floor in operative positions extending along a path of a reciprocally mounted fiber bale opening machine. The bales are assembled in groups and delivered to a standby position on the spinning floor. When required, each fiber group is moved from the standby position into an operative position.
    Type: Grant
    Filed: April 5, 1989
    Date of Patent: December 25, 1990
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Robert Demuth, Daniel Hanselmann, Max Tenger
  • Method and apparatus for dissipating heat from a textile machine
    Patent number: 4976098
    Abstract: The textile machine has a cooling fluid circuit for dissipating heat from the heat-emitting parts of the textile machine. The cooling circuit has a coil disposed within an air duct of the textile machine from which the air can be blown to the outside. A longitudinally extending fly suction duct may also be used for cooling the cooling fluid of a cooling circuit used to cool the motor and convertor of the textile machine. The fly duct thus serves to remove heat as well as fly from the machine.
    Type: Grant
    Filed: January 31, 1989
    Date of Patent: December 11, 1990
    Assignee: Rieter Machine Works, Ltd.
    Inventors: Urs Meyer, Andre Lattion
  • Mote knife arrangement for fitting to a flat of a carding machine
    Patent number: 4974295
    Abstract: A mote knife arrangement is fitted to a flat of a card or carding machine in a position so as to extend substantially transversely to the carding direction and the mote knife or blade is at an inclination so as to extend in a direction substantially opposite to the carding direction. A steel profile defining the mote knife or blade is provided for the mote knife arrangement. The steel profile is positively and non-slidably retained at a support or carrier which is mountable at the associated flat. The steel profile provided for the mote knife arrangement is retained at the support or carrier by permanent plastic deformation of such support or carrier which has a predetermined profile or sectional shape. The longitudinal direction of the profiled support or carrier also extends substantially transversely to the carding direction.
    Type: Grant
    Filed: March 31, 1989
    Date of Patent: December 4, 1990
    Assignee: Rieter Machine Works Ltd.
    Inventors: Robert Demuth, Urs Staehli
  • Apparatus for and method of stopping fiber-material feed
    Patent number: 4972667
    Abstract: In the event of a yarn breakage the pressing roll of the inlet roll pair of a drafting arrangement is raised by a slubbing guide element from the inlet drafting roll or cylinder while simultaneously forming a clamping location for the slubbing or other fiber material.
    Type: Grant
    Filed: July 31, 1989
    Date of Patent: November 27, 1990
    Assignee: Rieter Machine Works Limited
    Inventor: Werner Oeggerli
  • Combing device and method of processing staple fibers
    Patent number: 4972553
    Abstract: The combing device supplies a lap of staple yarn to a nipper unit which, in turn, presents a tuft of the lap to a rotating comb cylinder for combing of the tuft. Thereafter, the combed tuft is delivered by the nipper unit directly to a pair of detaching rollers for detaching of the combed tuft from the lap. The elimination of a tuft comb allows a higher weight for the lap and, hence, increased production of the combing device. The combed tuft can then be drawn and spun into yarn, for example, by ring spinning.
    Type: Grant
    Filed: April 10, 1989
    Date of Patent: November 27, 1990
    Assignee: Rieter Machine Works, Ltd.
    Inventor: Gian C. Mondini
  • Combing machine
    Patent number: 4970851
    Abstract: The combing machine comprises a detaching roll and an oscillating nipper unit comrising bottom and top nippers. The predetermined spacing for the oscillating nipper unit with respect to the detaching roll is adjustable, such predetermined spacing being the spacing between the front edge of a bottom-nipper plate and the nip location at the detaching roll when the oscillating nipper unit is in its front end position. A top comb is held in top-comb holders. Each top-comb holder on a top-comb bed is pivotably adjustable about an axis substantially parallel to the detaching roll, the top-comb bed being secured at the bottom nipper. Subsequent to an adjustment of the predetermined spacing, the top-comb holders are reset such that pins of the top comb are again located at the same predetermined distance from the detaching roll.
    Type: Grant
    Filed: August 4, 1989
    Date of Patent: November 20, 1990
    Assignee: Rieter Machine Works Ltd.
    Inventors: Hansulrich Eichenberger, Walter Ackeret
  • Apparatus for introducing a yarn into the catch slot of an empty bobbin tube
    Patent number: 4969607
    Abstract: The apparatus for introducing a yarn or the like into the yarn catch slot of an empty bobbin tube during the changeover operation from a full bobbin to an empty bobbin at an automatic yarn winder, comprises a yarn deflector, formed of sheet metal for instance, which is provided with cutouts. Each cutout serves for deflecting an associated yarn out of an imaginary plane extending through a yarn ridge. In order to ensure that the yarn, which is still arriving at the yarn ridge of the full bobbin during the changeover operation can be infed within the imaginary plane through the yarn ridge and at the same time can extend in the plane through the yarn catch slot, the yarn is pulled by a displaceable yarn entrainment member over a curved portion of the associated cutout and deviated or deflected at the associated yarn entrainment hook.
    Type: Grant
    Filed: October 26, 1989
    Date of Patent: November 13, 1990
    Assignee: Rieter Machine Works Ltd.
    Inventors: Peter Busenhart, Heinz Mutter
  • Rotational bearing arrangement for high speeds of rotation
    Patent number: 4969754
    Abstract: A rotational bearing arrangement for high speeds of rotation comprises a casing and a shaft mounted therein at a first ball bearing and a second ball bearing. At least the first ball bearing is a radial shoulder ball bearing. The first ball bearing has a first track formed on the shaft and a first outer race and the second ball bearing has a second track formed on the shaft and a second outer race. One coacting track and one outer race in combination form the ways for the balls of each associated ball bearing. The outer races are disposed in hollow substantially cylindrical seats formed by the casing. The first outer race when secured in its assembled state is disposed in a seat which constitutes a sliding seat, the seat dimensions being such that the outer race when introduced into but not secured in the seat can be reciprocated substantially effortlessly in axial direction.
    Type: Grant
    Filed: November 20, 1989
    Date of Patent: November 13, 1990
    Assignee: Rieter Machine Works Limited
    Inventors: Reinhard Rohrer, Henri Burki, Jurg Bischofberger, Raymond Frey
  • Method for production of friction spinning means
    Patent number: 4968525
    Abstract: There are formed at the wall of the friction spinning element bores or holes with a predeterminate bore diameter and a coating on their side facing a fiber feed duct, the coating extending over the bore edges into the bores or holes. Each bore or hole thus formed has a diameter at the bore or hole entrance or inlet which is smaller than the bore diameter of the related bore or hole. Each bore or hole has a cross-sectional area of less than 0.283 mm.sup.2, but amounting to at least 0.07 mm.sup.2. In this way, the undesirable penetration of fibers or fiber parts into the bores or holes is prevented as far as possible when air flows through the bores or holes at the side of the coating, while retaining a hole form or configuration which is favorable from the standpoint of airflow and blockage of the bores or holes.
    Type: Grant
    Filed: September 1, 1988
    Date of Patent: November 6, 1990
    Assignee: Rieter Machine Works Ltd.
    Inventors: Herbert Stalder, Urs Keller, Emil Briner, Werner Oeggerli, Arthur Wurmli