Strand Winding Patents (Class 57/303)
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Patent number: 10086717Abstract: An electric power system for transportation comprises an electric generator started up by an ignition signal, an electricity storage element and a power supply connected to the electric generator, the electricity storage element and the load. The power supply comprises a standby power supply unit, an operating power supply unit and a control unit connected to the electric generator. The control unit is provided with a first state allowing the standby power supply unit and the operating power supply unit to stop operation when the ignition signal is not detected, and a second state starting up the standby power supply unit so as to allow the standby power supply unit to supply electric power to the load and induce the load to emit an on-off signal to the operating power supply unit when the ignition signal is detected.Type: GrantFiled: January 29, 2018Date of Patent: October 2, 2018Assignee: ZIPPY TECHNOLOGY CORP.Inventors: Tsung-Chun Chen, Yun-Chen Chen, Edy Soeng
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Patent number: 7605410Abstract: The invention provides a novel memory for which process technology is relatively simple and which can store multivalued information by a small number of elements. A part of a shape of the first electrode in the first storage element is made different from a shape of the first electrode in the second storage element, and thereby voltage values which change electric resistance between the first electrode and the second electrode are varied, so that one memory cell stores multivalued information over one bit. By partially processing the first electrode, storage capacity per unit area can be increased.Type: GrantFiled: February 5, 2007Date of Patent: October 20, 2009Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Tamae Takano, Kiyoshi Kato, Hideaki Kuwabara
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Patent number: 7292757Abstract: A method and apparatus for determining and adjusting binder laylength during the process of manufacturing a selected fiber optic cable design. Specifically, a binder, having a distinguishing and physically detectable feature, is wrapped around fiber optic bundles or a buffer tube. A detection system detects the unique feature associated with the binder and thus creates a calculates a representative distance value. The distance value is calculated in relation the periodic spacing between two detected points on the physically detectable binder and is continuously monitored by a closed feedback loop. A computer receives status data from the closed feedback loop and compares the received data to a stored laylength parameter. In light of the comparison, an algorithm adjusts the binder head speed accordingly. This process repeats until the desired stored laylength is detected by the detection system.Type: GrantFiled: March 27, 2006Date of Patent: November 6, 2007Assignee: Draka Comteq B.V.Inventor: Michael T. Rossi
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Patent number: 6780096Abstract: A spiral wound abrasive belt is formed from an abrasive media including a plurality of webs. The webs of the abrasive media may include coated abrasives joined by splicing media or other suitable joining material. Alternatively, the webs may include individual single or multiple layers that form a coated abrasive simultaneously along with the spiral belt without the use of additional joining material. A method of forming the spiral belt includes draping the abrasive media over a fixed hub at an angle to form the spiral belt while abutting the edges of the outermost web and overlapping the outermost web and adjacent web or webs. Heat and pressure may be applied to the joined edges to form a strong bond along the spiral seam. Another method includes introducing the webs forming the abrasive media at an angle and draping the webs over a fixed hub. The abrasive media may then be passed around an adjustable hub that provides tension in the spiral belt while allowing for different circumferentially sized belts.Type: GrantFiled: June 21, 2000Date of Patent: August 24, 2004Assignee: 3M Innovative Properties CompanyInventors: Ross A. Brown, Robert A. Follensbee, Stephen J. Yoos, Douglas C. Hunt, Gary L. Heacox
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Patent number: 6651419Abstract: A mechanism for cutting a reserve of thread of spindles of continuous spinning machines has a cutting blade, an element which is draggable and which is adjustable without contacting an area of a spindle where there exists a thread of a reserve to be cut and removed, and a device for regulating an adjustment of the element.Type: GrantFiled: September 5, 2001Date of Patent: November 25, 2003Assignee: Electro-Jet, S.A.Inventor: Alberto Verdaguer Casas
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Patent number: 6606847Abstract: A method of spinning-in yarn on an operating unit of a rotor spinning machine includes steps of yarn preparation for spinning-in, steps of spinning rotor preparation for spinning-in, and final spinning-in steps. The final spinning-in steps include at least the beginning of the sliver supply to the singling-out device, leading of the fibers from the singling-out device away from the spinning rotor for a predetermined time interval, letting the spinning-in yarn end get into contact with the collecting groove of the spinning rotor, and starting of the yarn draw-off and winding. At least some final spinning-in steps are time synchronized in relation to the closing of the spinning unit thus obtaining optimum piecer quality repeatedly at all operating units of the machine.Type: GrantFiled: July 23, 2001Date of Patent: August 19, 2003Assignee: Rieter CZ A.S.Inventors: Josef LudvĂ{haeck over (c)}ek, Pavel Kousalik, Jaroslav Markl, Tomá{haeck over (s)} Tesa{haeck over (r)}
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Patent number: 6289662Abstract: Below a ring-spinning spindle, a clamping ring and a clamping sleeve have frustoconical surfaces, at least of one first textured to increase the grip on an underwinding thread. The clamping sleeve, for example, may be spring-biased to axially engage the clamp and force may be required to open the clamp.Type: GrantFiled: February 3, 2000Date of Patent: September 18, 2001Assignee: Zinser Textilmaschinen GmbHInventors: Friedrich Dinkelmann, Gerhard Darcis, Peter Mann
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Patent number: 6199359Abstract: A positioning unit for a yarn splicer mountable to a creel in a yarn winding operation includes a rolling unit attachable to the creel, a main support member secured to the rolling unit, and a slide unit supporting the yarn splicer. The slide unit is slidably mounted to the main support member. In one arrangement, the main support member includes an air cylinder, and the slide unit includes an actuator driven by the air cylinder. In another arrangement, the slide unit is secured to the main support member for manual positioning by a creel attendant and is supported by a counterweight assembly. The positioning unit enables a creel attendant to easily and readily position a mechanical splicer or the like relative to yarn packages on a creel to facilitate yarn package maintenance.Type: GrantFiled: January 29, 1999Date of Patent: March 13, 2001Assignee: Cone Mills CorporationInventors: Rubin Hart, Maurice Willis
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Patent number: 6042045Abstract: A single piece thread cutter for a ring spinning spindle has radially and axially extending lugs spaced apart about the periphery of the cup shaped sheet metal cylindrical or conical body. Where the lugs are formed by bending tabs, they may be doubled up to increase the stability and thickness.Type: GrantFiled: October 21, 1998Date of Patent: March 28, 2000Assignee: Zinser Textilmaschinen GmbHInventors: Kurt Hack, Peter Mann, Alois Gurtler
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Patent number: 5943853Abstract: The adjacently arranged spinning aggregates of an open-end spinning machine are each provided with an opening device, which includes a removal opening for trash particles. A channel extending in the machine longitudinal direction takes up the trash particles. A sliding carriage traverses in the channel, which sliding carriage is coupled to a belt-like traction mechanism and which pushes the gathered trash particles ahead of itself to a suction point. The channel is wider than the distribution area of the trash particles in this direction. A clearance area occurs hereby in the channel, in which the traction mechanism extends.Type: GrantFiled: November 5, 1997Date of Patent: August 31, 1999Assignee: Novibra GmbHInventor: Gerd Stahlecker
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Patent number: 5884469Abstract: Along a row of spindles of a ring-spinning machine, an underwind-residue remover is displaceable by a belt whose belt stretches are horizontal and lie one above the other over the length of the machine. The underwined-residue remover has a shank guided along a rib at a track for the remover alongside a row of spindles and the track has a foot extending horizontally from the rib and overlain by the stretches of the belt. The stretches of the belt have loops connecting them at opposite ends and a roller arrangement about which the respective loop passes.Type: GrantFiled: July 1, 1997Date of Patent: March 23, 1999Assignee: Zinser Textilmaschinen GmbHInventors: Peter Mann, Jakob Bothner
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Patent number: 5884468Abstract: A device for centering tubes during their processing, for example in a tube cleaning station of a textile machine. In a textile machine provided with several batches of tubes of differing length, diameter and/or material, which cannot be processed together in known cleaning devices, the present device has a rotatably seated holder with at least two differing centering devices adapted for different tubes for selective positionability relative to the tubes to be centered according to sensor devices which detect the differing physical characteristics of the tubes.Type: GrantFiled: December 4, 1997Date of Patent: March 23, 1999Assignee: W. Schlafhorst AG & Co.Inventor: Hans-Jakob Reuters
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Patent number: 5735113Abstract: A yarn spindle is provided having a housing, a spindle drive shaft rotatably mounted in the housing, and a cylinder fixedly attached to the spindle drive shaft. The cylinder includes a downwardly extending circumferential skirt, with the skirt and the spindle drive shaft defining an annular space between them. The skirt has a bottom edge with at least four thread cutting slots disposed therein, the slot being a substantially rectangular notch through the thickness of the skirt. The at least four thread cutting slots are equally spaced about the bottom edge. The spindle also includes a waste thread spool statically mounted on the housing for shielding the spindle drive shaft against contact with waste yarn. The waste thread spool includes a frusto-conical barrel having a top end, a bottom end, an axial hole, and an inclined outer wall. The outer wall is angled approximately 30 to 35 degrees from the vertical and has a substantially vertical groove formed therein.Type: GrantFiled: April 26, 1996Date of Patent: April 7, 1998Assignee: Modern Fibers, Inc.Inventor: Roy Alton Cadenhead, Sr.
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Patent number: 5581989Abstract: A spinning-machine spindle rotatable about an axis has an upper cop-holding region and a lower nonsmooth reserve surface. The reserve surface is formed as a substantially uniform array of tiny pits separated by a raised continuous land extending as a continuous grid over the surface. Normally the pits are of pyramidal shape and the land lies substantially on a surface of revolution centered on the axis.Type: GrantFiled: October 28, 1994Date of Patent: December 10, 1996Assignee: Zinser Textilmaschinen GmbHInventors: Peter Mann, Jakob Bothner, Frieder Probst
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Patent number: 5579630Abstract: The improved device (1A, 1B) for removing the yarn reserve (15) wound on the spindles (13) of spinning or twisting machines (2), is of the type traversing on rails (3) positioned above and along the spinning or twisting machine (2) so as not to impede work carried out manually on the spindle frame. Moreover, so as to be particularly effective in removing yarn reserves (15) and dust, the brush (12) is circular in plan, it rotates about itself (12) and is housed partly within the suction port (11) such as to project by the amount sufficient for operation (FIG. 2).Type: GrantFiled: July 20, 1995Date of Patent: December 3, 1996Assignee: Fratelli Marzoli & C. S.p.A.Inventor: Dante Inverardi
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Patent number: 5562268Abstract: Frustoconical portions of a blade blank are ground only along their external periphery so that the grounds are cylindrical. The frustoconical portion form openings as well as of 20.degree. to 30.degree. with the generatrix of the cylinder. The blades can be ground a number at a time in the form of a stack with the disk portion. The resulting blades are mounted on the spindles of a ring spinning or ring twisting machine to cut the threads to turn the last thread on spool or bobbin and lower turns on a collecting region of the respective spindle.Type: GrantFiled: September 22, 1994Date of Patent: October 8, 1996Assignee: Zinser Textilmaschinen GmbHInventor: Jakob Bothner
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Patent number: 5479770Abstract: The instant invention is a reserve-surface cleaner used on a longitudinally extending row of spindles rotatable about respective parallel axes lying in a common longitudinal plane and each having an upper package-forming region, a lower reserve surface, and a contact surface centered on the axis. The cleaning apparatus has a carriage displaceable longitudinally along the row parallel to the plane past the spindles, a blade mounted on the carriage and having an edge juxtaposable with each of the reserve surfaces as the carriage moves along the row, and a spacer mounted on the carriage, fixed thereon relative to the blade, and engageable with the contact surfaces of the spindles as the carriage moves along the row. A spring urges the spacer and blade transversely of the plane toward the spindles so that as the spacer wears a transverse spacing between the blade and the reserve surfaces decreases.Type: GrantFiled: November 30, 1994Date of Patent: January 2, 1996Assignee: Zinser Textilmaschinen GmbHInventors: Jakob Bothner, Friedrich Dinkelmann
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Patent number: 5423170Abstract: A yarn winding machine having a suction apparatus for withdrawing the severed advancing yarns during the bobbin changing operation. The suction apparatus comprises a tubular duct which extends the length of the winding machine, and the duct mounts a yarn intake tube of relatively small diameter in front of each of the side by side winding stations of the machine. A yarn is adapted to be sucked into and through each of the yarn intake tubes by the relatively high speed air current flowing therethrough, and the yarn then advances into the tubular duct and to a waste container.Type: GrantFiled: April 12, 1993Date of Patent: June 13, 1995Assignee: Barmag AgInventors: Peter Dammann, Klaus Bartkowiak
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Patent number: 5343687Abstract: A winder-to-double twister connecting system, which comprises a yarn end picking device for picking out a yarn end from a package set on a tray, a package lifter for inserting a two-piled empty bobbin mounting adapter received from an overhead conveyor, into the tray on a circulating conveyor line, and for transferring the two-piled package mounting adapter to the overhead conveyor; a bobbin mover for pulling off, from an adapter, an empty bobbin coming on the circulating conveyor line; a package loader for taking up the package with the yarn end picked out from the tray and mounting the package to the adapter; and a bobbin stripper for removing remaining yarn from the empty bobbin received from the bobbin mover.Type: GrantFiled: March 24, 1993Date of Patent: September 6, 1994Assignee: Murata Kikai Kabushiki KaishaInventors: Yasuo Okuyama, Nobuo Sakamoto
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Patent number: 5311732Abstract: In a ring-spinning or -twisting machine a longitudinal row of upright and normally rotating spindles mounted on a common support beam each have a lower reserve surface below a sleeve normally carried on the spindle. An apparatus for clearing roving wound on the surface has a guide rail extending longitudinally along a back side of the beam adjacent the spindles, a carriage displaceable along the rail past the spindles, and a drive including a longitudinally extending drive element secured to the carriage for displacing same longitudinally along the rail past the spindles. A roving-cutting element is fixed on the carriage engageable immediately adjacent the spindles between the respective lower reserve surfaces and sleeves and a roving-clearing element is fixed on the carriage below the cutting element and engageable immediately adjacent the lower reserve surfaces of the spindles.Type: GrantFiled: October 16, 1992Date of Patent: May 17, 1994Assignee: Zinser Textilmaschinen GmbHInventor: Daniel Friedrich
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Patent number: 4942730Abstract: A textile yarn ring spinning or twisting apparatus of the type comprising a spindle for carrying a yarn support tube, the spindle being rotatable about its axis to enable yarn to be wound on the tube to form a yarn package, a yarn reserve winding member around which yarn may be wound prior to the doffing of a wound package from the spindle, and a yarn severing device so positioned adjacent the axis of the spindle and between the reserve winding member and an adjacent portion of the spindle on which the end of the package is located as to engage yarn extending from the reserve winding member to the wound package on the spindle. In accordance with the invention the drive mechanism enables relative rotation between the reserve winding member and the severing device so that the length of yarn extending from the package on the spindle to the reserve winding member may be severed.Type: GrantFiled: August 16, 1988Date of Patent: July 24, 1990Assignee: James Mackie & Sons LimitedInventor: William A. Morrison
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Patent number: 4941314Abstract: Disclosed is an apparatus for treating tail yarns in textile spindle assemblies of textile spinning machines, twisters, etc., wherein a stationary upper slit ring and an axially slidable cylindrical member having a lower slit ring at an upper end thereof and a lower portion outwardly expandable by centrifugal force and provided with a spring are mounted on a base portion of a spindle to form a tail yarn gripping means, the pressed state of which is released by sliding the cylindrical member downward by rotational centrifugal force, whereby the yarn underwindings can be automatically removed from the tail yarn gripping means during operation.Type: GrantFiled: August 16, 1989Date of Patent: July 17, 1990Assignee: Odaware Industry Co., Ltd.Inventor: Kunimitsu Odawara
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Patent number: 4870815Abstract: The invention concerns a spinning machine having a spindle with which to rotate a yarn package, a winding apparatus to wind the yarn on the package, and drafting rolls to feed the yarn to the winding apparatus. According to the disclosed method, the winding down of the yarn on the package is achieved by reversing the rotation of the spindle relative to the spinning direction. according to the disclosed device, a spacer ring is employed which is fixed to the spindle, and which has an upper and a lower hollow, a protruding edge, and substantially sharp edges which aid in cutting the yarn.Type: GrantFiled: March 29, 1988Date of Patent: October 3, 1989Assignee: Cerit SpAInventors: Mirko Marchiori, Danny Lant, Fabio Lancerotto, Umberto Gerin
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Patent number: 4796422Abstract: Disclosed is an apparatus for treating tail yarns in textile spindle assemblies of textile spinning machines, twisters or the like, wherein a stationary upper slit ring and an axially slidable lower slit ring are mounted on a base portion of a spindle to form a tail yarn gripping means. The pressed state of the tail yarn gripping means is released by sliding the lower slit ring downward by rotational centrifugal force. The tail yarn can be securely fixed to the tail yarn gripping means and the yarn underwindings can be automatically removed from the tail yarn gripping means during the operation of the machine.When a flange of the upper slit ring is perforated with a plurality of yarn passing openings, the tail yarn released from the means for holding the yarn underwindings is retained by this yarn passing opening, which prevents adverse effects to the traveler in the early stage of winding, resulting in prevention of the occurrence of yarn breakage or the deterioration of yarn properties.Type: GrantFiled: May 17, 1988Date of Patent: January 10, 1989Assignee: Odawara Industry Co., Ltd.Inventor: Kunimitsu Odawara
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Patent number: 4679389Abstract: A spinning or twisting machine comprises at least one operating unit, which is driven by a drive motor mounted near an operating unit, at least one suction or air duct, a heat collecting jacket for a drive motor at least partially enclosing the drive motor, and at least one connecting air duct connecting the heat collecting jacket with at least one suction or air duct so that heat generated at the drive motor can be exhausted through the duct. The ventilators normally associated with the drive motors can be eliminated or reduced in output and energy consumption.Type: GrantFiled: February 12, 1986Date of Patent: July 14, 1987Assignee: Zinser Textilmaschinen GmbHInventor: Horst Wolf
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Patent number: 4662167Abstract: A servicing device is provided for a spinning machine which includes a plurality of spinning stations, which servicing device is moveable along the spinning stations and adjustably disposed adjacent to each. The servicing device is outfitted with at least one fly catching needle connected to a rotational drive unit. The fly catching needle is arranged at a holder which is moveably mounted and provided with a driving unit so that it is adjustable along one or several predetermined paths to predetermined parts of the spinning unit and especially plural positions of a drafting unit or frame.Type: GrantFiled: February 12, 1986Date of Patent: May 5, 1987Assignees: Hans Stahlecker, Fritz StahleckerInventor: Fritz Stahlecker
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Patent number: 4617791Abstract: In spinning machine comprising an underwinding device for winding the last turns, means are provided whereby the last yarn turns are cut positively on the intervention of the underwinding device and means are provided whereby the yarn end originating from the traveller is positively retained by the device to allow starting of the next winding operation at reduced speed, and this end is then released as soon as the spindle assumes its normal operating speed.Type: GrantFiled: October 4, 1984Date of Patent: October 21, 1986Assignee: Societe Anonyme des Ateliers Houget Duesberg BossonInventor: Pierre Lousberg
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Patent number: 4598540Abstract: During the cop-forming phase of operation of a ring spinning or twisting machine, yarn is wound onto spools carried by the spindles in order to form cops. At the end of this phase, the yarn associated with each spindle is fastened below the spool by means of several fastening turns; thereafter, the full cops are removed with breakage of the yarns. In order to facilitate the operation of cop-removal means for automatically and simultaneously removing all of the full cops, yarn-severing means are provided that sever the yarns prior to the cop-removal means picking up the full cops. In a preferred embodiment, the yarn-separation means is arranged to snap the yarns by downwardly displacing the members around which the fastening turns are wound.Type: GrantFiled: December 14, 1983Date of Patent: July 8, 1986Assignee: Officine Gaudino di P. Gaudino & C. S. a.s.Inventor: Piero Gaudino
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Patent number: 4561602Abstract: A method and apparatus for continuously removing waste yarn during doffing of a textile yarn processing machine is disclosed, which includes a mobile carriage which is adapted to move to a position adjacent a winding station to be doffed. The carriage mounts a waste yarn take-up spool, and yarn transfer means for moving the advancing yarn from the winding station to the take-up spool. After doffing the full package, the yarn transfer means moves the advancing yarn back to the empty bobbin, and the carriage is then free to move to the next winding station. The waste yarn wound on the take-up spool may be advantageously used for quality control measurements.Type: GrantFiled: December 19, 1983Date of Patent: December 31, 1985Assignee: Barmag Barmer Maschinenfabrik AktiengesellschaftInventors: Heinz Schippers, Gerd Munnekehoff
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Patent number: 4543778Abstract: The spindle assembly is of the type having a spool upon which coils of strand material are formed preparatory to doffing of a strand package from the assembly. The coils are formed without overlapping them upon one another, and preferably without permitting their transverse engagement and possible mutual attachment. First and second oppositely directed helical grooves are respectively provided upon upper and lower portions of the spool. The first groove prevents overlapping and transverse attachment of the strand material as the coils are formed. Both grooves position strand material at a location favorable to clearance from the spool.Type: GrantFiled: March 28, 1983Date of Patent: October 1, 1985Inventors: Ernest Koella, III, Albert D. Harmon
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Patent number: 4428541Abstract: The bobbin for receiving a roving has an internal shoulder enabling it to seat on a surface provided at the upper end 5 of a spindle. The bobbin hangs from this shoulder and the bottom of the bobbin is received in a resilient clamping means provided on the spindle for clamping a roving end against the bobbin.Type: GrantFiled: August 5, 1982Date of Patent: January 31, 1984Assignee: Rieter Machine Works, LimitedInventor: Peter Novak
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Patent number: 4345423Abstract: An improved yarn reserve disc having an annular rim of a radial length of at least 7 mm extending radially outwardly from a lower portion of an outer, circumferential, yarn storage surface thereon in a spindle assembly of a two-for-one twister textile yarn processing machine. The annular rim prevents coils of yarn wrapped around such yarn reserve disc, upon breakage of the yarn during processing by the spindle assembly, from slipping down off of the yarn storage disc to interfere with subsequent driving of the spindle assembly.Type: GrantFiled: July 16, 1980Date of Patent: August 24, 1982Assignee: Palitex Project Company GmbHInventor: Wolfgang Leupers
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Patent number: 4208865Abstract: Independently actuable underwinding clearers are mounted adjacent to those lower portions of the machine's spindle assemblies upon which yarn underwindings are placed preparatory to the formation of yarn packages upon the upper portions of the spindle assemblies. Upon actuation thereof during each cycle of package building operation of the textile machine, the clearers separate the lengths of yarn interconnecting the underwindings with the yarn packages undergoing formation upon the spindle assemblies. The clearers preferably are actuated sequentially and pneumatically. A preferred mode of actuation of the clearers is by blasts of air emitted from a mobile servicing apparatus, such as a conventional pneumatic traveling cleaner, during movement of the apparatus along the length of the textile machine.Type: GrantFiled: August 3, 1978Date of Patent: June 24, 1980Assignee: Zinser Textilmaschinen GmbHInventor: Ernest Koella, III
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Patent number: 4166586Abstract: A yarn winding method is disclosed where at the step of winding yarn on bobbin, at changing a full bobbin to an empty bobbin, a running yarn is wound on an auxiliary winding roller provided separately from the bobbin, travelling of the yarn and rotation of the auxiliary winding roller are then stopped, a full bobbin is exchanged by an empty bobbin, a part of the yarn wound on the auxiliary winding roller is then taken out to form a thread line for setting the yarn to the empty bobbin, travelling of the yarn, rotation of the auxiliary roller and rotation of the empty bobbin are then started, the yarn-setting thread line is shifted toward the side of the empty bobbin to wind the running yarn onto the empty bobbin, and the normal winding operation on the empty bobbin is then started. Also an apparatus for practicing this yarn winding method is disclosed.Type: GrantFiled: May 18, 1978Date of Patent: September 4, 1979Assignee: Toray Industries, Inc.Inventors: Katuo Shirasuna, Ichiro Kumo, Teruo Kobayashi, Shigeo Ohno
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Patent number: 4151706Abstract: Disclosed is a plate-like yarn stripper device for use in removing staple fiber yarns from rotatable elements of circular cross-section, such as in the removal of yarn wraps underwound beneath a spindle blade to anchor the yarn threadline in the doffing and donning of cops on a ring spinning frame. The stripper is formed with a central hole defining stripping edges at a surface of the plate, these edges being spaced from the yarn-wound element by a prescribed distance such that when the element is rotated the wound yarn will buffet the edges and be abraded, weakened and cut or otherwise severed in the stripping action. Personnel safety is enhanced in use of the stripper by the absence of peripheral sharp edges, bristles or other abrasive external surfaces.Type: GrantFiled: February 3, 1978Date of Patent: May 1, 1979Assignee: Platt Saco Lowell LimitedInventor: Frank E. Brooks