Abstract: An endless structure for the continuous transport of a plurality of bobbins is disposed for operative association with one or more textile machines such as, for instance, spinning machines. Each bobbin is marked with a code according to whether the bobbin is empty or wound with sliver, as well as the type and count of the sliver wound thereabout. As the bobbin travels on the endless transport structure the code is read and the wound bobbins are directed to an appropriate textile machine for unwinding. Empty bobbins are removed from the textile machine and carried by the endless transport structure to an exit station. At the exit station, empty bobbins are loaded into a sliver winder for rewinding with sliver. Once wound, the bobbins are marked with a new code and inserted back onto the endless transport structure.

Abstract: The carriers which carry the roving bobbins are moved from the conveyors which are parallel to the spinning machine on branches which extend laterally into the spinning machine to effect a bobbin changeover of transverse rows of bobbins in the machine. The branches extend angularly, for example, at angles of 45.degree. to 90.degree. to the center plane of the spinning machine and may extend to near the center plane or across the width of the machine.

Abstract: A can transport carriage for supplying an automatic spinning machine with full cans of sliver includes a rotating turntable having multiple can parking positions at equal radial spacings from the turntable axis and a can manipulating arrangement movable between a can transfer position immediately above one of the parking positions and a can delivery position at the spinning machine for moving a full sliver can from the one parking position to the spinning machine. An indexing drive rotatably indexes the turntable by one parking position for individually positioning each parking position in sequence at the can transfer position of the manipulating arrangement.

Abstract: Method and Apparatus for forming a package including a steps of drafting and twisting a raw sliver to form a spun yarn, taking up at least two spun yarns in a paralleled state into the same package, and supplying the thus wound package directly to a two-for-one twister disposed in continuity with the spinning device. The spinning device and the two-for-one twister are connected to each other by a conveyor for feeding the packages from the spinning device and by a yarn supply package replacing device.

Abstract: A steam setting system for steam setting a plurality of bobbins reduced by a fine spinning frame in which a steam setting apparatus comprising at least a pair of independent steam setting mechanisms is provided on the way of a bobbin feeder line connecting a fine spinning frame with a winder.

Abstract: A textile machine includes a plurality of tube support devices transported by a transport device to a tube transfer position for transfer of tubes between the tube support devices and a tube handling device. The tube support devices each include an upright member for individually supporting a tube in a substantially upright disposition, the upright member having a recess and an indicator device disposed within the recess. The indicator device cooperates with the transport device to indicate the presence of the upright member at an indicating position located at a predetermined location with respect to the tube transfer position. Accordingly, the transport device determines the presence of an upright member and responds accordingly to reliably position the upright member at the tube transfer position for transfer of the tube between the upright member and the tube handling device.

Abstract: A transport and handling system for multi-position textile machines, in particular twisting machines, comprising a first track system, the path of which extends along the longitudinal sides of the machines, and which accommodates at least one automated handling device to perform servicing operations, and further comprising a second track systems, the path of which extends likewise along the longitudinal sides of the machines, and along which transport devices travel, which are adapted to be combined to trains and to receive working materials and/or working means. The paths of the two track systems extend parallel to each other over at least a portion such that the automated handling device is adapted to both engage with the transport devices and move past same.

Abstract: In the case of a machine system for the processing of sliver having a first machine, which produces sliver and deposits it in containers, and having a second machine, which processes the sliver from the containers, this second machine being connected with the first machine by a conveying device for the containers, it is provided that automatically operating devices are assigned to the first machine, for the gripping of the end portion of the sliver deposited in each container and for the fixing of this end portion at a specified point of the respective container.

Abstract: A method and apparatus for disposing the yarn end of a package in a further handling disposition such as, for example, in the tube of the package, is provided. A preliminarily repositioning device receives packages from a ring spinning machine or the like, some of the packaging having their yarn ends in a preferred preliminary disposition and other of the packages having their yarn ends in a disposition displaced from the preferred preliminary disposition. The preliminarily repositioning device repositions the yarn ends of packages having displaced yarn ends from a displaced disposition to the preferred preliminary disposition. Thereafter, a relocating device relocates the yarn end of each package having its yarn end in the preferred preliminary disposition from that disposition to the further handling disposition. An advancing device advances packages between the preliminarily repositioning device and the relocating device.

Abstract: An automatic sliver can replacement apparatus is combined with an automatic spinning machine for replacing empty sliver cans with full sliver cans. Sliver supporting carriages are guided to travel along the spinning machine with full sliver cans being supported at alternating can locations on the carriages and intermediate can supporting locations being unoccupied for supporting empty sliver cans. Another carriage movable along the spinning machine supports a can manipulating mechanism equipped with sensors to recognize and distinguish empty and full cans on the transport carriages, the manipulating mechanism being operable in association with the sensors to transfer empty cans from the spinning positions to the empty can locations on the carriages and to transfer full sliver cans from the carriages to the spinning positions of the spinning machine.

Abstract: A bobbin transport system for spinning frames for supplying bobbins from bobbin reservoirs to spinning frames in a spinning mill. The spinning frames are divided into dedicated machine groups and a common machine group or groups. Bobbins are supplied to the dedicated machine groups by way of a main transport path and/or a sub transport path, and a communicating transport path for transferring bobbins from the sub transport path to the main transport path is provided for each of the spinning frames of the common machine group or groups. The bobbin transport system for spinning frames makes it possible to change the allotment of numbers of spinning frames for different types of yarns to be set for the common machine group or groups and to distribute different types of bobbins accurately to predetermined spinning frames thereby to enable production of several articles by small quantities without deteriorating the availability factor of the entire spinning frames.

Abstract: An apparatus for transporting spinning tubes along a textile spinning machine for use in supplying empty spinning tubes thereto and removing fully-wound spinning tubes therefrom, includes an endless flexible metal belt having a generally flat lateral extent, a plurality of spinning tube transport members mounted on the belt at spacings therealong, a belt guide arrangement for orienting the belt to travel in an operating path along the spinning machine with its generally flat lateral extent in upstanding facing relation to the spinning machine, and a drive for actuating traveling movement of the belt. Preferably, the apparatus is adapted for a textile spinning machine having spinning stations along each of two opposite sides thereof, the guiding arrangement serving to guide the belt in the aforesaid upstanding disposition along each side of the spinning machine.

Abstract: A method and apparatus for supplying sliver to the spinning stations of a spinning machine to wind a batch of a predetermined number of packages includes a sliver can transfer device, a sliver can conveying device, a sliver can filling device and a computer for controlling the operation of the various sliver can handling devices. Each spinning station is initially provided with a sliver can having a differing amount of sliver therein than the other sliver cans as the winding of the packages of the batch is commenced. The spinning stations are then continuously individually provided with fresh cans of sliver having a uniform amount of sliver therein during the normal running of the batch.

Abstract: Installed on a conveyor line which connects a spinning machine and a winding machine together, a heat treatment apparatus for bobbins of yarn which accepts a batch of upright bobbins arranged in rows and which performs steam heat treatments on the bobbins contained therein.

Abstract: Method to convey roving packages (10-110) to feed spinning machines, the packages (10-110) being conveyed automatically to their working positions on the spinning machines by conveyor elements (12) on runways (13), package supports (11-111) being connected to the conveyor elements (12), the packages (10-110) being caused to arrive at their respective working positions on the spinning machines with the end of the roving (15-115) pre-positioned on roving supports (14-114-16-116) connected to the package supports (11-111), the end of the roving (15-115) having been extracted from the body of the packages (10-110) during the phase between the removal of the packages (10-110) from the package production machines and their transfer to the conveyor elements (12-13), the end of the roving (15-115) being positioned on the roving supports (14-114-16-116) substantially during the step of transfer of the packages (10-110) onto their respective package supports (11-111).

Abstract: An open end spinning machine and an associated traveling sliver can replacement carriage are provided with cooperating components for automatically replacing empty sliver cans at the spinning positions of the machine with full sliver cans and threading up the sliver for spinning resumption. An openable and closable sliver guide is provided at each spinning position in association with a sliver monitor which recognizes the presence and absence of sliver in the guide. A signal transmitter at each spinning position produces a can replacement signal when the monitor recognizes the absence of sliver in the guide. A program controller is associated with a signal receiver on the carriage to actuate exchange of the empty sliver can at the signaling spinning position with a full sliver can from the carriage.

Abstract: A method is disclosed for automatically engaging and inserting sliver fed from a spinning can into a spinning unit by means provided on a movable unit which comprises providing a spinning can containing a quantity of sliver and positioning a segment of sliver located between a coiler and the spinning can on a vertical plane and a horizontal plane. A first portion of the segment of sliver is clamped, engaged and gripped by gripping means at a second portion other than at the first portion. The sliver is broken at a portion between the first and second portions to leave a first broken end of the sliver adjacent the first portion and a second broken end of the sliver adjacent the second portion. The second broken end of the sliver is positioned in correspondence with an intake of a condenser of the spinning unit, and is introduced in the intake of the condenser. Substantially simultaneously air is introduced under pressure downstream of the intake of the condenser.

Abstract: A bobbin transporting system in which a plurality of spinning frames are connected in parallel to each other to one end side of a single transport conveyor while a plurality of winders are connected to the other end side of the transport conveyor and the transport conveyor is connected to the taking-in sides of the winders or the taking-in sides of the spinning frames by an annular circulating path.

Abstract: A two-for-one twisting machine comprising a plurality of two-for-one twisting units arranged in rows, the two-for-one twisting units each consisting of a twisting machine and a take-up device, wherein there is provided a travelling member adapted to travel in front of such plural two-for-one twisting units, the travelling member being provided with a feed package changing means and a take-up package changing means.

Abstract: A method for winding a fixed length of yarn on a yarn-supply package in an apparatus connecting an automatic winder or an innovation spinning machine having a winder with a two-for-one twister. The method comprises dividing a single yarn-supply package transferred from a winder side to form a plurality of twist-yarn packages on the two-for-one twister side.

Abstract: An object, such as a bobbin, is gripped at a location other than its center of gravity and lifted so as to rotate by gravity to a desired orientation. A carriage moves the bobbin toward a conveyor path and tilts the conveyor path into position to receive the bobbin. The bobbin is positioned on the conveyor path in the desired orientation while the conveyor path is in the receiving position.

Abstract: A device is disclosed, which is useful for subdividing and diluting an accumulated amount of pirns in bulk, which comprises a chute positioned between a pirn container, and a conveyor belt. The conveyor belt is prearranged to transfer and meter a limited number of pirns. Along the chute, at least one barrier wall is provided, which can move along a vertical, or substantially vertical, direction, and is driven by a drive source, whose enabling is commanded by a level sensor located downstream the same barrier wall. A plurality of movable barrier walls, following each other, transversely prearranged along the chute relatively to the pirn falling motion, can be used. Each barrier wall is driven by a drive source, whose enabling is commanded by a level sensor located downstream of the barrier wall.

Abstract: An apparatus for transporting cops and cop tubes includes a plurality of circular-disk-type carriers having two opposite sides. Spindle bearings each have a bearing portion penetrating and protruding beyond a respective one of the carriers toward one of the opposite sides of a respective one of the carriers. Spool spindles each are rotatably supported in and protrude beyond a respective one of the bearings toward another of the opposite sides of a respective one of the carriers for carrying a cop or a tube. The carriers have substantially planar lower surfaces each surrounding a respective one of the protruding bearing portions. A transport apparatus movable in a given transport direction has a surface operatively connected to one of the opposite sides of each of the carriers. Another of the opposite sides of each of the carriers is slidingly guided in a guide rail.

Abstract: A method and apparatus for exchanging roving bobbins on a ring spinning machine or the like. A temporary storage spindle is provided in a service unit which services the ring spinning machine and a roving cutting and piecing apparatus and a spindle are movable between the temporary storage spindle, the bobbin holder of the spinning machine and a spare bobbin frame of the spinning machine to receive and transfer bobbins thereat to the temporary storage spindle, the bobbin holder or the spare bobbin frame. In one exchange process, the bobbin on the bobbin holder is transferred directly to the spare bobbin frame after the bobbin on the spare bobbin frame has been transferred to the temporary storage spindle. Thereafter, the bobbin on the temporary storage spindle is transferred to the bobbin holder. According to another exchange process, the bobbin on the spare bobbin frame is transferred directly to the bobbin holder after the bobbin on the bobbin holder has been transferred to the temporary storage spindle.

Abstract: A method and apparatus for transporting roving bobbins in a spinning factory utilizing a factory building having several floors for the installation of spinning machines such as roving frames and ring spinning frames, between specified positions on a floor where roving frames are installed and positions for carrying out a roving bobbin exchanging operation for ring spinning frames, wherein a guide rail system for displaying a plurality of bobbin carriers provided with a plurality of bobbin hangers is suspended from the ceiling of the floor on which the ring spinning frames are installed and transporting passages, provided with apparatus for displacing a plurality of pairs of roving bobbins by successive unit cycle operations composed of a first upwards displacing operation and a second downwards displacing operation, is arranged between each of the above-mentioned specified positions and a corresponding transfer position for the bobbin carriages at which the roving bobbins can be transferred thereto and there

Abstract: A method and apparatus for automatically removing and collecting in an orderly fashion fully-spun cops from a plurality of textile ring spinning machines wherein each ring spinning machine has a longitudinal conveyor for transporting doffed cops to one machine end and a movable cart is provided for transverse travel between the corresponding machine ends for collection of doffed cops from the machine conveyors. The cart carries a plurality of cop magazines and an associated means for automatically depositing cops into a magazine in a cop receiving position. Means are provided for automatically receiving and delivering doffed cops from the machine conveyors to the cop depositing means and means are further provided for automatically positioning the magazines one-by-one in proper cop receiving position with respect to the cop depositing means.

Abstract: In a heat treatment apparatus for bobbins of yarn having a plurality of heat treatment baths arranged between a spinning machine and a winding machine, the bobbins from the spinning machine are carried into the heat treatment baths by a conveyor line with pegs, the heat treatment is performed in the baths with the bobbins mounted on the pegs, and the heat-treated bobbins are automatically delivered from the baths onto another conveyor line with pegs installed on the winding machine side.

Abstract: A winding machine having a transporting device for directly supplying to the winding machine bobbins or spun coils from a spinning machine, and for returning ejected tube sleeves to the spinning machine, includes a device for comparing and adjusting a flow of the tube sleeves returned from the winding machine to a requirement for tube sleeves by the spinning machine, the transporting device being connected with a device for holding back ejected tube sleeves which are at least partly wound.

Abstract: A two-for-one twisting machine including a plurality of twister units arranged in a back-to-back relationship in two rows in constituted such that a support shaft extends above friction rollers in each of the rows of the twister units and individual cradle arms are supported turnably at base end portions thereof on one of the support shafts on the back side.

Abstract: An automated thread processing system is characterized by reducing thread package handling and labor requirements. The system includes a textile thread processing machine station having a plurality of spindle assemblies for processing thread and forming wound packages of thread. At least one additional station is also provided. A thread package transporting mechanism includes a stationary continuous rail passing through the thread processing machine station and to and through the additional station and back to the thread processing machine station. Thread package carrying devices are movably mounted on the rail and positioned for receiving the wound packages of thread doffed from the spindle assemblies of the thread processing machine station and then carrying the thread packages from the thread processing machine station to the additional station and releasing the thread packages at the additional station and then returning to the thread processing machine station.

Abstract: An automatic winder and a two-for-one twisting machine are interconnected by a yarn supply package exchanging device for a set of two packages arranged in two upper and lower stages which is located between the automatic winder and the two-for-one twisting machine. Doffed packages at the winder side are put on a yarn support fitted on a tray by the yarn supply package exchanging device and are transported and supplied to a spindle of the two-for-one twisting machine.

Abstract: A package feeding method and apparatus for a yarn twisting machine having a large number of two-for-one twisters of two stage yarn supply type. A package is fed after an end of yarn of the package has been wrapped in several turns of a yarn layer non-existing portion of the package.

Abstract: A bobbin transfer system consisting of a pair of conveyors, one to carry the spinning bobbins and the other to carry the empty bobbins, each installed at a top portion of a spinning machine to run along the spindle row. The spinning machine and a winder may be connected with each other by the conveyors.

Abstract: A bobbin transporting system includes a spinning bobbin transporting path and an empty bobbin transporting path both provided between a spinning frame and a winder, and a spinning bobbin reservoir path is formed intermittently of the spinning bobbin transporting path between the spinning frame and winder for temporarily reserving thereon all of spinning bobbins on a transport band which have been doffed by the spinning frame.

Abstract: Bobbins spun in a ring spinning machine are conveyed sequentially to a measuring, counting and sorting device located between the ring spinning machine and an automatic winder that winds yarn from the bobbins. The measuring, counting and sorting device senses the presence of a bobbin, counts the bobbins being sensed, senses yarn and bobbin characteristics and compares the characteristics with predetermined standards. The device separates bobbins whose characteristics differ from the standard. Data regarding the operation of the spinning machine and operation of the winding machine are combined with the data obtained by the measuring, counting and sorting device and statistically evaluated for display or for controlling the production of the spinning machine and winding machine or for controlling conveyance of the packages from the winding machine.

Abstract: An apparatus for transporting roving bobbins (Y) along a transportation rail (5) arranged between a spinning process (3) and a roving process (1), comprising bobbin carriages (11), each having a plurality of bobbin hangers (13) for suspendingly holding roving bobbins (Y) and movably supported by the transportation rail (5); a driving device (18) for intermittently displacing the bobbin carriage (11); and a roving stripper (35) arranged midway of the transportation rail (5) for clearing off a residual roving on the roving bobbin (Y) during the transportation of the carriage (11).

Abstract: A method and apparatus for exchanging exhausted roving bobbins for full packaged roving bobbins applied to a conventional ring spinning frame provided with at least one roving supply rail arranged at a position in front of the spinning frame, at each side thereof, wherein a unit operation for exchanging exhausted roving bobbins suspended by front and back bobbin hangers, facing each other on a creel, for full packaged roving bobbins previously carried to the predetermined supply positions thereof on this supply rail, is carried out stepwisely from one side to the other side of the spinning frame along the creel, with regard to each pair of front and back bobbin hangers on the creel to which such a unit operation is to be applied, by utilizing only two pegs for temporarily supporting roving bobbins capable of changing the axial distance thereof between an axial distance (b) between the front and back bobbin hangers, facing each other on the creel, and an axial distance (a) between two adjacent bobbin hangers o

Abstract: A spinning frame control system in which a spinning frame is connected with a winder by means of a bobbin conveyance path and an empty bobbin return path. Identification marks in the form of concentric circles are fixed onto conveyance mediums for conveying spinning bobbins each independently, and readers for the identification mark are disposed in the bobbin feed position from the spinning frame to the conveyance mediums and also in the return path of bobbins discharged from the winder.

Abstract: In the process and apparatus for loading a ring spinning machine with roving-supply bobbins at least two bobbins rows extending longitudinally on each side of the spinning machine supply roving to the work stations and a auxiliary bobbin row which can travel in with full bobbons and out with empty bobbins are provided. According to our invention an exchange process is provided comprising replacing the roving of the bobbins in one of the bobbins rows supplying the roving which is being consumed by the roving of the auxiliary bobbin row which has been brought in with full bobbins. Thus the auxiliary bobbin row becomes one of the bobbin rows dispensing the roving while the bobbin row being replaced now becomes the auxiliary bobbin row with empty bobbins and is taken away. A new auxiliary bobbin row with full bobbins is then brought in. The exchange process is repeated for each of the bobbin rows as the roving is exhausted. A simple space saving apparatus for performing this process is described.

Abstract: The apparatus is intended for automatically supplying continuous spinning machines (ring) with reeled material, in which the reels must be supported at a position above the work groups and hung downwards, and comprises in combination: in correspondence of the work groups, transfer and overturn units to move the reels-supporting mandrels upwards in order to receive the reels and downwards to arrange the reels mounted thereon in a supply attitude; a transfer or conveyor system for periodically bringing a transfer or conveyor carriage into positions corresponding to those of the mandrels for the replacement of the reels; and means for transferring the reels from the carriage to the upwardly turned mandrels.

Abstract: A bobbin transfer system of a spinning frame (1), in which a series of trays (13) are carried on a pair of carrier rails (14, 15) driven to repeat a back-and-forth reciprocation. Hooking members (23) are arranged along the carrier rails (14, 15), which allow the trays (13) to pass thereover during the forward displacement of the carrier rail (14, 15) but inhibit the backward displacement of the trays (13) by the action of hooks (23a) formed on the hooking member (23) at a distance from each other corresponding to N times the spindle pitch wherein N satisfies the equation .DELTA.A.gtoreq..DELTA.D.times.N (wherein .DELTA.D stands for a manufacturing tolerance of a diameter of the tray 13 and .DELTA.A stands for an allowance for a grip distance of a bobbin catcher in an auto-doffer) and p stands for a spindle pitch. Accordingly, the trays (13) are transferred intermittently as the carrier rails (14, 15) reciprocate at a stroke larger than the spindle pitch.

Abstract: An apparatus for automatic exchange of at least one full bobbin with at least one empty bobbin in a flyer, i.e. a flyer doffer, comprises a transport device reaching the flyer acting to transport the full bobbins and the empty bobbins, a doffing region and a mounting region which reach the spindles of the flyer for groupwise exchange of the full bobbins with the empty bobbins on the spindles and a lifting region reaching the transport device for groupwise exchange of the full with empty roving bobbins on the transport device. The doffing region and the mounting region on one hand and the lifting region on the other hand are spatially separate from each other. An exchanging region extending to the doffing, mounting and lifting regions is provided. Advantageously the doffing region and the mounting region are combined in a single doffing and mounting region.

Abstract: A method and apparatus for piecing rovings introduced from almost exhausted roving bobbins suspended by two rows of bobbin hangers mounted on a creel of a conventional ring spinning frame provided with a roving bobbin supply rail disposed in front of the creel, with rovings introduced from full packaged roving bobbins previously carried to the respective supply positions of the supply rail, said for exchanging the almost exhausted roving bobbins for the full packaged roving bobbins. A piecing rovings operation is carried out for each pair of almost exhausted roving bobbins suspended by a front row bobbin hanger and a back row bobbin hanger of the creel, facing each other, together with two corresponding adjacent full packaged roving bobbins of the supply rail, respectively.

Abstract: A spinning winder in which a spinning frame and an automatic winder are integrally associated. The spinning winder provides carrier routes comprising routes for transporting a spinning bobbin from the spinning frame to the automatic winder and routes for returning an empty bobbin discharged from the automatic winder to the spinning frame and also provides a passage for an operator between the spinning frame and the automatic winder.

Abstract: In the case of an arrangement for producing staple fiber yarn that is first prespun on an air spinning machine and that subsequently is finish-spun on a simplified ring spinning machine, it is provided that the air spinning machine and the ring spinning machine, by means of a conveying device for the spools receiving the prespun yarn, are connected to form a machine system, the ring spinning machine of which and the air spinning machine of which each have a number of spinning points that are coordinated with one another.

Abstract: A method and apparatus for automatically actuating roving bobbin exchange operations in a textile yarn spinning apparatus. The spinning stations are divided into equal groups and a roving bobbin exchange operation is actuated at each group by a suitable control system, e.g. a microprocessor, as a function of the number of spinning stations of the group identified as down with uncorrectable yarn breaks and as a further function of the total elapsed operating time of the group since the last bobbin exchange operation.

Abstract: An apparatus for preventing an unwinding of a roving end from a full package roving bobbin during the transportation thereof. This apparatus is constructed in combination with the transportation mechanism formed in the known doffing mechanism or known overhead roving bobbin transportation system, in a condition such that a part of the constitutional mechanical elements of such known transportation mechanisms are utilized as a part of the constitutional mechanical elements of the apparatus according to the present invention. In the apparatus of the present invention, a pressing member is utilized for applying pressure against the peripheral face of the winding portion of each roving bobbin while this bobbin is rotating, and therefore the free end of the roving is firmly attached to the above-mentioned peripheral face of the roving bobbin. Consequently, any possible problems due to an unexpected unwinding of the roving can be effectively prevented.

Abstract: Apparatus and methods for automatically replacing emptying yarn spools at a spinning machine, especially ring spinning machines, which machines include a spool frame and a plurality of spinning stations, wherein full spools are brought to and empty spools are moved away from the spinning stations. Full spools are arranged along the spool frame of the spinning machine in at least one magazine row, either individually, or a plurality thereof in sections, and the magazine row in the region of the first emptying spool, or section of spools, includes an empty location. This empty or bypass location is intermittently along the magazine row.

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: The process for replacing an empty roving bobbin with a full roving bobbin in a spinning machine, particularly in a ring spinning machine, in a dispensing position by an automatic roving bobbin changing device comprises taking the full roving bobbin from a storage location and putting the full roving bobbin in place of the empty roving bobbin. The full roving bobbin associated with the dispensing position is taken from one of a plurality of stand-by positions in the storage location. To provide a more automatic operation the process further comprises testing whether the full roving bobbin is present in one of the stand-by positions adjacent the dispensing position before beginning the exchange and when the absence of the full roving bobbin is indicated inducing a relative motion between the roving bobbin changing device and the stand-by positions until the roving bobbin changing device stands adjacent to one of the stand-by positions having a full roving bobbin.