Abstract: A latch member for a creel assembly is disclosed. The latch is constructed of a generally flat plate, with upstanding side entrance and exit portions. A V-shaped slot is provided in the flat portion of the plate, and a mount is provided at an upper end of the latch to allow the latch to hang freely and rotate in a plane, and be mounted to a support member of a creel assembly. A stub shaft is mounted in the plane to an adjacent support for the creel arm so that when the creel is lowered, the latch member falls upon the stub shaft, which enters the V-shaped slot. When an empty bobbin is replaced in the creel, the weight of the bobbin causes the latch member to disengage from the V-shaped slot.

Abstract: On a textile machine, arL empty spool (12) is conveyed along a multiplicity of spool stations (1) situated next to one another. In a predetermined position relative to a grasping apparatus (3) the said empty spool (12) is stopped and is picked up by said grasping apparatus (3), and held by its circumferential surface. After its being lifted by the grasping apparatus (3), the spool (12) is retained in an axial alignment. This retention is discontinued, before the spool (12) is released at the spool station (1) where it is required. For the execution of this procedure, a retaining arrangement (8), composed of stopping devices (4 and 5), is provided for the spool (12) which is held by the grasping apparatus (3). The retaining arrangement (8) idles in a location outside of the transport path which the empty spool (12) will occupy when held.

Abstract: A method and device are provided for supplying empty tubes to winding devices of a textile machine comprising a plurality of operating units arranged next to each other in at least one line and equipped each with a winding device as a part of the operating unit, with a tube container provided at one end of the machine and coupled with a tube conveyer arranged along the line of the operating unites of the textile machine along which is also provided an attending unit adapted to travel along the line of the operating units and containing a handling device for moving a tube from the tube conveyer to a winding device. Prior to the attempt at rewinding, the handling device of the attending device lays into the winding device an empty winding tube. In case of an unsuccessful attempt at rewinding (at restoring the winding), the winding tube 22 is taken out of the winding device 1 by the attending device 4.

Abstract: A device for holding and releasing bobbin tubes in a pot spinning frame. A bobbin tube holding body has a longitudinal axis, an interior passage along the axis, and a lower end, with the lower end having an outer surface and being adapted to fit within a bobbin tube. A yarn guide for pot spinning is moveably mounted in the passage of the bobbin tube holding body for movement with respect to the bobbin tube holding body along a predetermined path aligned with the axis. A plurality of gripping elements are disposed at the lower end of the bobbin tube holding body concentrically with respect to the axis, and each of the gripping elements are moveable between an extended position extending radially outward of the outer surface of the lower end of the bobbin tube holding body for gripping engagement of the bobbin tube, and a retracted position radially inward of the outer surface out of gripping engagement with the bobbin tube.

Abstract: A bobbin changing apparatus for a flyer frame which allows works to freely be performed by attendants at a front side of the flyer frame at any time during the operation of the flyer frame, while eliminating need for providing independent rails for transporting full bobbins and empty bobbins, respectively. Disposed at a front side of a flyer frame (2) is a work platform (35) on which the number of pegs (49) which is twice as large as that of bobbin wheels are mounted with a pitch equal to a half of that of the bobbin wheels (4). Each of the pegs (49) can selectively be disposed at an operative position on a top surface of a cover plate (41) and to a retracted position retracted from the top surface. Further, the pegs can be driven reciprocatively over a distance corresponding to one pitch of the peg array.

Abstract: 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 a 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.

Abstract: A device for handling wound bobbins which are wound on a spinning machine includes an attending device which is moveable along the spinning machine from one wound bobbin to another. A tending device includes a lever which carries a gripping mechanism, for swinging the gripping mechanism toward and away from a wound bobbin. The gripping mechanism has gripping arms which can be spread for receiving a wound bobbin and then brought together for grasping a wound bobbin. The gripping mechanism can then rotate the arms through 180.degree. and the lever can move the mechanism over a conveyor to deposit the wound bobbin onto the conveyor in the same orientation, whether the bobbin was removed from the spinning machine from one side or from an opposite side.

Abstract: 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.

Abstract: An apparatus for grasping spun yarn carriers in spinning machines or twisting machines is enabled to clamp spun yarn carriers of different nominal diameter ranges by the provision of a stationary clamping element formed by a common holder and a set of detachable interchangeable clamping elements selectively mountable to and demountable from the holder. Each of the interchangeable clamping elements is associated with a specific predetermined nominal diameter range of spun yarn carriers.

Abstract: A doffing apparatus for removing a row of yarn tubes from a row of upright spindles has a support and a row of grabs mounted on the support, each engageable with a respective tube of a respective spindle, and movable for lifting the tubes off the spindles. Respective sensors at the grabs detect the presence of tubes in the respective stations and generate individual outputs respectively corresponding to the absence of tubes in the respective stations. A controller connected to all the sensors receives the outputs therefrom and stops the apparatus on detection of no tube in any of the stations.

Abstract: The grippers are mounted on a doffer bar so as to disengage from both the top and bottom of the bar should a mis-alignment occur relative to a bobbin tube. The removal or separation of a gripper from the bar causes a pneumatic or electrical signal to be generated which can be used to indicate the individual disturbance location. A light may also be provided at each gripper station in order to indicate a position of a disturbance.

Abstract: A maintenance device is provided in a two-for-one twister textile yarn processing machine having a plurality of spindle assembly stations in side-by-side relationship along the length of the machine for processing of yarn at each station as the yarn is fed from yarn supply packages carried by an adapter device and mounted in the spindle assembly, and an overhead conveyor mechanism extending the length of the machine generally above the spindle assembly stations and including spaced-apart downwardly-directed suspension holders for releasably receiving and carrying adapter devices with full yarn supply packages thereon and adapter devices with substantially empty yarn supply packages thereon to and from respective spindle assembly stations.

Abstract: In yarn processing stations, in which two yarns are withdrawn from feed yarn packages inserted on a package adapter, the problem arises that a residual yarn wind is left on the tube of a feed yarn package. To remove this residual yarn wind, the maintenance and servicing device of the present invention is provided witha rotatable, upward and downward movable gripper for the removal of the package adapter from the yarn processing station, at least one rotatably supported mandrel to receive the package adapter, a rotatably supported, upward and downward movable cutting device for severing a residual yarn wind left on a feed yarn tube, and a rotatably supported suction device for the removal of the cut residual yarn, so as to be able to perform, according to the method of the present invention, the cleaning of feed yarn tubes still carrying yarn remnants directly after their removal from the yarn processing station.

Abstract: In the donning and doffing operation of a spinning machine, a tube (20) is pushed onto a packaged tube (14), whereby the thread (7) remains unbroken. The package (14) and the tube (20) are rotated together, until a few turns of the thread (7) are wound on to the tube (20). The tube (20) is subsequently held and the packaged tube containing the package (14) is removed. Subsequently, the empty spindle (15) is guided into the tube (20) for subsequent spinning operations without the necessity for removing overwindings which normally occur.

Abstract: A gripper assembly having a plurality of tube gripping apparatus is provided for transferring full and empty bobbins between the bobbin bank of a textile fly frame and a supply creel. The gripper assembly is mounted on a traveling service unit and includes a drive device for commonly driving the tube gripping apparatus to synchronously grip and release tubes to be transferred. Each tube gripping apparatus includes an axially movable tube engaging member having gripping portions for compressively gripping a tube, a gripping portion drive member pivotally supported in a housing, and a pivot movement converting device for converting pivoting of the gripping portion drive member into axial movement of the tube engaging member. The gripping portion drive member is operatively connected to a common drive shaft of the gripper assembly for driving pivoting thereof.

Abstract: An apparatus for gripping tubes of yarn packages in a textile machine includes a pressurized fluid drive member. The pressurized fluid drive member is fixedly mounted to a support frame and, in one aspect of the invention, extends interiorly of a generally cylindrical fixed component having a pair of diametrically opposed projections formed on its outer surface. A movable component comprising a tube receiving housing for receiving a yarn package tube therein has a pair of detents compatibly configured with the projections on the fixed component for releasably securing the tube receiving housing to the fixed component. In the event of a collision between the tube gripping apparatus and another object, the movable component is non-destructively released from its normal operating position, thereby minimizing the risk that potentially damaging forces will be transmitted to the pressurized fluid member.

Abstract: The grippers are mounted on a doffer bar so as to disengage from both the top and bottom of the bar should a mis-alignment occur relative to a bobbin tube. The removal or separation of a gripper from the bar causes a pneumatic or electrical signal to be generated which can be used to indicate the individual disturbance location. A light may also be provided at each gripper station in order to indicate a position of a disturbance.

Abstract: An automatic cop replacing apparatus for a shuttle-type loom with which a cop contained in the shuttle is automatically replaced, including tying the threads together of the old and new cops, and requiring no operator intervention. The apparatus includes a hand for gripping the cop. A rotary arm plate on which the hand is mounted, a drive device for rotating the rotary arm plate and for straightly moving the rotary arm plate in the axial direction, and a drive shaft for moving the rotary arm plate to an exchange position for the cop. A thread tying device holds and ties together the treads of the old and new cops.

Abstract: A method and apparatus for automatically doffing fully wound bobbins simultaneously from the plural spindles of a textile spinning or twisting machine and subsequently donning empty tubes simultaneously onto the spindles. When doffing a fully wound bobbin from its supporting spindle, a trailing length of yarn from the doffed bobbin is helically placed about the spindle and, when subsequently donning an empty tube onto the spindle, the trailing yarn length is securely clamped at least partially between the empty tube and spindle, which trailing yarn length is automatically broken from the doffed bobbin upon its removal, to enable convenient automatic re-start of the machine.

Abstract: A yarn spinning, twisting or doubling machine having bobbin doffing and donning apparatus for the spindles of the machine, the apparatus comprising bobbin conveying means extending along and above a row of spindles, a series of bobbin grippers spaced at the same pitch as the spindles, each gripper being mounted for vertical movement between its respective spindle and the conveyor, each gripper being designed to hold or grip a bobbin at a point beyond one end of a package wound on the bobbin so that the grippers can lift the wound bobbin from its spindle for engagement by means on the conveyor and then release the bobbin for subsequent removal, or grip an empty bobbin on the conveyor and move it to its respective spindle and control means operable to move the conveyor after it has received the full doffed bobbins and to bring empty bobbins into line with the spindles so that the grippers can place empty bobbins on the spindles.

Abstract: The gripping device comprises at least one gripper which can be inserted into the tube and is formed from two elements which are mobile axially one in the other and are provided with frusto-conical ends which cooperate in such a manner that the axial movement of the inner element causes the outer element to expand and to engage under pressure with the tube for the purpose of its replacement. Two friction discs supported in an axially mobile manner are associated with the gripper and are subjected to the action of a spring in order to press a lower support element of the discs against the tube in order to retain it and allow exact keying of the tube on to the rotary drive element. The device is particularly suitable for cops.

Abstract: A robot device for loading empty spools (b) and the unloading of filled spools (b') into and from wire winding machines arranged in a single file on one side of a path (4). The longitudinal axis of the path (4) is substantially parallel to the winding axes of the wire winding machines. The robot device comprises a transport carriage (2) movable along the path (4) and carrying a vertical supporting structure (1) on which is cantilevered a turret-like gripping frame (41-55) having an axis of rotation (10) which is horizontal and parallel to the path (4) and carries at least one pair of diametrically opposite self-centering clamps (P, P'), each clamp being adapted to grip a spool (B, B') the axis of which is parallel to the rotational axis (10) of the gripping frame (41-55), by clamping the end flanges of the spool (B, B').

Abstract: Apparatus for use in doffing and donning roving bobbins on the winding spindles of textile roving machines, wherein a drive nut associated with bobbin gripping components is constrained by an L-shaped guide slot to move axially with respect to the bobbin spindle for positioning the bobbin axially with respect thereto and to further move rotationally with respect to the spindle to orient mating drive components of the bobbin and spindle in proper driving connection.

Abstract: Easy lifting and transportation of a twister bobbin, and movement of the bobbin onto a creel pin of a warper creel, is facilitated. A bridle has an eye disposed at its top, the eye receiving a hook connected to a powered lift. A generally semi-circular sheet metal body receives a bobbin body therein, the sheet metal body being pivotally mounted to the bridle for rotation about a horizontal axis. A yoke is rigidly connected to the body and terminates in a semi-circular portion which fits in a groove in the bobbin nose. A handle is connected to the yoke termination and extends at an acute angle to the dimension of elongation of the body and yoke. By grasping the handle an operator can pivot a bobbin mounted by the device from a vertical to a horizontal position, control the lift to move the bobbin into place with respect to a creel, and move the bobbin onto a horizontally extending creel pin.

Abstract: Device (10) to doff yarn packages on ring spinning machines (12) which is able to doff the yarn packages (15) automatically and to replace them with empty tubes (16), and which comprises a movable gripper (17), a station (20) to engage tubes and means (31) to remove yarn packages, the gripper (17) comprising an element (25) to engage yarn packages and an element (26) to engage tubes and being able to rotate about a horizontal shaft (24) so as to bring one or the other engagement element (25-26) to cooperate with the spindle shaft (23) momentarily, the gripper (17) being able to move vertically and normally staying in a position (17B) where it does not interfere with the zone of the spindle (13).

Abstract: A doffing method in a spinning frame or the like comprises steps of holding a spinning bobbin after completion of winding with a holding member, removing the spinning bobbin from a spindle without bunch winds, fitting the spinning bobbin onto a bobbin conveying medium having an air path, cutting the yarn and sucking air within the spinning bobbin through the air path of the bobbin conveying medium to attract an end of the yarn adjacent the spinning bobbin into the spinning bobbin under the guidance of the holding member.

Abstract: A method is disclosed for automatically doffing a full strand package on a collet winder such as used in the manufacturing of fiberglass and the like strands. The method includes providing a rotating doffing cup (A) which includes a cylindrical cup (40) having an inflatable liner (44) carried on the inside of the cup. A robotic vehicle (10) includes a servo-linkage arm (28) which positions the doffing cup at a desired winding station along a row (14) of collet winders (B). The method includes bringing the doffing cup up to an approach position, pivoting a traverse guide (76) away from the collet, and extending the doffing cup over a full strand package (36). The rotating cup is brought up to a speed slightly greated than the speed of the rotating yarn package. The liner (44) is then inflated causing the rotating doffing cup to grip the strand. The rotating cup (A) is then retracted with the strand package.

Abstract: A gripper device for retaining and holding the tube of a roving bobbin comprises a pair of juxtaposed gripper elements and a piston-and-cylinder unit for moving them toward and away from one another. The gripper elements are each provided with a cylindrical portion engaging the end of the tube carrying the roving package and a frustoconical segmental apron adapted to rest against the frustoconical end of the roving layer carried by the tube.

Abstract: A ring spinning or twisting machine is provided with a cop-removal device arranged to automatically remove all full cops simultaneously from the spindle row of the machine and to replace them with empty cop spools. The cop-removal device comprises a plurality of take-up members each associated with a respective spindle and movable only in the axial direction thereof, and a conveyor extending parallel to the spindle row and arranged to transport the empty spools and full cops respectively to and from the machine. The conveyor has a first row of pins arranged to receive full cops after they have been removed from the spindles by the take-up members, and a second row of pins for carrying empty spools to be picked up by the take-up members and placed on the spindles. The conveyor is movable horizontally transverse the spindle row to bring the two rows of pins into coaxial alignment with the axes of the spindles when required.

Abstract: In a pneumatic gripper for bobbin changer devices with an elastically deformable collar in the gripper housing, the gripper housing (2) and the collar (3) are of bell-shaped construction. The collar (3) is inserted into the gripper housing (2). The collar (3) overlaps the edge (20) of the gripper housing (2) and is pressed airtightly against the edge (20) by means of a screw collar ring (4). The gripper can be produced with a simple construction and cheaply and retains the cop with directional stability.

Abstract: An apparatus for the conjoint gripping of bobbins by means of pins or spigots formed of a rigid material, mounted at a support or carrier, and insertable into the bobbins. An expansible hose or tube member extends lengthwise of the support, this hose member when subjected to an increased internal pressure serving to press the bobbins against the pins or pin members inserted therein. This known apparatus has the advantage that there does not occur damage to the entering pin members, nor does there arise permanent deformation or destruction thereof. Yet, such apparatus possesses the shortcomings that the seized bobbins, when pressed against the pin members, are not positioned with sufficient accuracy in a direction parallel to the longitudinal direction of the support.

Abstract: The present invention relates to a gripper apparatus on a ring spinning or ring twisting machine for gripping empty and/or wound bobbin tubes using pegs mounted on a support beam extending along the machine and inserted into the interior space of the bobbin tubes, the bobbin tubes being gripped by pressing each bobbin tube and the peg inserted into it against each other. The pressing generally is effected using compressed air. According to the invention at each peg a cylindrical extension made of elastically bendable material is provided, which extension extends from the front end of the peg towards the tip thereof.This arrangement yields the advantage that in case of faulty positioning of bobbins, tubes a head-on collision of the peg front end on the upper bobbin tube rim, with accordingly grave consequences, such as e.g. damage to the support beam or blowout of the compressed air, no longer can occur.

Abstract: A bobbin holding device for holding at least one bobbin includes a hollow body having a bobbin receiving opening and connected at a base portion thereof to a doffing bar of a bobbin doffing and donning apparatus, a bobbin holding member disposed in the body and movable radially relative to the bobbin receiving opening between a projected position and a retracted position, and a flexible diaphragm disposed in the body in fluid tight relation with respect to the bobbin holding member for applying a fluid pressure on the bobbin holding member to move the same into the projected position. The bobbin holding device further includes a block member disposed between the flexible diaphragm and the doffing bar, the block member being formed with a fluid passage(s) to supply a pressurized fluid to the diaphragm without passing it through the doffing bar.

Abstract: The gripping device consists of a holder in the form of an elastically deformable annular member mounted above the hole of a support plate at a single point of its lateral surface. The holder is provided with clamping means consisting of a flexible compressed-air tube also carried by the support plate at a point which is diametrically opposite to the point of attachment of the annular member. A guiding member in the form of an inverted funnel is attached to the support plate beneath the hole of the plate.

Abstract: Device for the semiautomatic doffing of spools on cops provided with mushroom-shaped upper ends on a spindle bench in spinning with immovable closed or open flyers, characterized in that the bench upper plate has arms articulated thereto about vertical axes; the arms performing alternate angular movements in the horizontal plane with predetermined amplitude; the free end of each arm being provided with an immovable and open grip capable of penetrating into the volume of revolution of the corresponding flyer at the arrest of the spindle and coacting with the corresponding mushroom-shaped upper end of the cop following its rise to a predetermined height; a level R fixed to each pin, a rod pivotally connected to said levers to supply an alternating angular movement to the levers and means to lower the cops until there is a complete withdrawal of the spindles from the cops and the arms are rotatable in the opposite direction with respect to the previous rotation into the flyer's volume of revolution so as to take

Abstract: Method of automatically removing a coil from a spindle of a ring spinning or twisting-frame work station which includes driving along the frame and traveling device equipped with a coil transporter; in a first operating cycle, releasing a coil core from a spindle by means of a coil-core releasing device while applying in axial direction compressive forces symetrically and over a large area upon a lower edge of the coil core; and in a second operating cycle, gripping the thus released coil by means of the coil transporter, raising the coil above the respective spindle and thereafter transporting the coil to a side of the frame and depositing the coil thereat and device for performing the method.

Abstract: An automatic doffing and donning apparatus is disclosed for replacing a plurality of full bobbins which are mounted on winding spindles disposed parallel to each other on a yarn processing machine with a plurality of empty bobbins which are mounted on a bobbin reservoir plate disposed along and in front of the winding spindles. The apparatus comprises: a movable frame which is horizontally movable along both the yarn processing machine and the bobbin reservoir plates; a full bobbin doffing device mounted on the movable frame for doffing the full bobbins formed on the winding spindles and transferring them to the bobbin reservoir plate, and; an empty bobbin donning device mounted on the movable frame.

Abstract: A mobile type auto-doffer for ring spinning machines and the like consists of a doffing device and a donning device with mechanisms similar to those of a doffing device. The operation for doffing full bobbins may be carried out by utilizing the doffing device, and the operation for donning fresh bobbins may be carried out by utilizing the donning device. During the doffing operation, a plurality of full bobbins is simultaneously transported from the spindles to the pegs disposed between the spindle rail of the spinning machine and the surface of the floor of a spinning plant. During the donning operation, the same number of fresh bobbins as that of a full bobbins is simultaneously transported from the pegs to the spindles. Both of the above-mentioned ways of transporting bobbins may be carried out by moving the full bobbins or the fresh bobbins along separate vertical passages, respectively, i.e., one passage being disposed farther from the row of spindles than the other passage.