Abstract: The invention provides an injector having a suitably formed head which can partially penetrate through a lateral aperture in a spindle into the vicinity of a chamber containing an expansible capsule.Penetrating into the chamber, the injector laterally displaces the capsule and by injecting through a beak a fluid under pressure creates in the axial passage a negative-positive pressure necessary for transporting the filament.In the vicinity of the chamber there can advantageously be provided a mobile section which is circumferentially displaceable by a projection which is included on the head of the injector, when the injector penetrates or is penetrating the spindle.The injector is further provided with an arm which may be pivoted in the vicinity of the balloon container or on an auxiliary bench.

Abstract: The present invention is concerned with threading-in textile materials, such as a yarn, a roving or similar textile or filamentary material, into an enclosed duct or the like. The threading-in of the textile material is accomplished by manually operating a manual apparatus which functions as a pump. In this way there can be avoided the use of expensive and complicated devices presently provided for threading-in textile materials as is known. The invention is astonishingly simple, the manual apparatus is easy and convenient to use, readily transportable and its cost is exceedingly modest.

Abstract: A yarn brake for applying tension to a yarn at the entrance end of a tube as the yarn moves through the tube and which may be utilized in a hollow spindle assembly of a textile yarn processing machine, such as a two-for-one twister. The yarn brake includes a first braking surface formed on a yarn entrance end of the tube and a movable brake member resting on the yarn entrance end of the tube and having a second braking surface on the underside thereof for cooperating with the first braking surface to apply tension to the yarn moving therebetween. The yarn brake includes a threading slot formed in the entrance end of the tube for threading of the yarn through the tube without moving the braking member from the entrance end of the tube.

Abstract: An apparatus for infeeding textile band material to a consumer, especially for infeeding a sliver deposited in a can to a spinning machine, comprising a transport tube extending between a feed location and a consumer. There is provided means for generating, within the transport tube, an infeed flow or current which flows in the direction of the consumer. Also, holder means are operatively correlated with an inlet opening of the transport tube in order to hold a starting portion of the sliver or other band-like material, such holder means enabling seizing of the starting portion of the sliver with the aid of the infeed flow.

Abstract: In a method of and apparatus for feeding a tow to a textile machine, the leading end of the tow is automatically twisted by a vortical gas flow during transport through a tube to the machine. Preferably the vortical gas flow is also used to draw the tow through the tube.

Abstract: There is described a two-for-one spinning or twisting spindle in which thread drawn from a take-up package is threaded through from the bottom upwards by means of a compressed-air-operated threading arrangement so that it can be connected to thread, coming from a supply package, at the top end of a thread entry tube. In the arrangement shown, a thread storage disc of a two-for-one twisting spindle has therein a thread exit passage 8 the inner end of which opens into a short tube 10 which opens in turn into a hollow shaft 12 of the spindle, leaving an annular gap 11. In operation of the threading arrangement, compressed air is fed into a hollow shank 5 of the spindle from below and flows upwards through the annular gap 11. Because of this the short tube 10 acts as an injector nozzle which sucks the thread into the thread exit passage 8 from the side and transports it upwards through the hollow shaft 12 of the spindle.

Abstract: The improved yarn brake mechanism of this invention is provided with a tubular brake housing having axially spaced apart inlet and outlet openings for passage of a yarn therethrough and an enlarged cavity formed in the tubular brake housing between the inlet and outlet openings. A pair of cooperating brake platelets is mounted in the enlarged cavity of the brake housing, the brake platelets having surface portions positioned in opposing contacting relation for applying tension to a yarn passing therebetween, and having peripheral portions which cooperate with one another to form a V-shaped groove for guiding the yarn between the opposing contacting surface portions.

Abstract: The yarn brake of this invention is useful in a textile yarn processing machine, such as a two-for-one twister, and includes a stationary permanent magnet arranged at one end of a brake housing and spaced from a fixed braking surface in the direction of movement of the yarn. A braking body is movably positioned within the housing between the braking surface and the permanent magnet, with the braking body including a permanent magnet having a magnetic polarization oriented in repelling relation to the stationary permanent magnet for thus biasing the braking body toward and into engagement with the braking surface to apply tension to a yarn passing therebetween. The magnetic repelling forces allow the braking body to be reliably moved out of engagement with the braking surface when necessary, as for example by a pneumatic flow applied to thread a yarn through the brake, or to accommodate knots or other variations in thickness in the yarn.

Abstract: A textile yarn processing machine, such as a two-for-one twister, is provided with a pneumatically operated yarn threading mechanism for initially threading a yarn through a hollow spindle of the textile processing machine during a thread-up operation and an improved self-threading yarn brake mechanism for applying tension to the yarn as it passes through the hollow spindle during operation of the machine. The improved yarn brake mechanism is constructed to cooperate with the threading mechanism to facilitate automatic threading of the yarn through the hollow spindle and is characterized in that the compressed air which is supplied to the threading mechanism during the thread-up operation also operates to move the yarn brake mechanism from an engaged position to a released position to thus automatically provide a clear path for threading the yarn through the hollow spindle.

Abstract: A yarn brake which may be utilized on a textile yarn processing machine, such as a two-for-one twister, for applying tension to a moving yarn and wherein a movable braking body is held in applied position against a braking surface and is separated therefrom during threading of the yarn through the yarn brake. An intercepting means is provided for receiving and holding the braking body, upon separation thereof from the braking surface during threading, in a position in which the braking body and braking surface remain substantially aligned for easily returning to braking engagement after the yarn threading.

Abstract: A textile yarn processing machine, such as a two-for-one twister or the like, having respective yarn processing stations is provided with an improved yarn monitoring system for stopping the operation of the yarn processing station in response to the absence of a yarn running therethrough, as for example, upon the occurrence of a yarn breakage. The improved yarn monitoring system of the present invention is constructed generally as follows: A yarn sensor is constructed and mounted so as to be held in an operative setting by yarn tension when the yarn is running in normal operating condition and to be released in the event of the release of such tension, as upon a yarn breakage. A switching mechanism is provided for stopping the operation of the yarn processing station, and means is provided for operably connecting the yarn sensor to the switching mechanism for actuating the switching mechanism upon the release of the yarn sensor from its operative setting.

Abstract: A yarn take-up and supply mechanism for selected intermittent use with textile machines, such as a two-for-one twister, utilizing yarn, such as during a threading-up operation of the machine, characterized by a construction for receiving a free end of yarn from the textile machine, taking-up a loop of a predetermined length of the yarn and completely releasing the free end and taken-up length of yarn to the textile machine in a substantially tension-free condition.

Abstract: A device for pneumatically threading yarn for a double twist spindle supporting at least one yarn brake, is characterized in that said device comprises a pneumatic system operative firstly to retract the normally applied yarn brake and then to achieve the automatic threading of the yarn through the shaft of the spindle, likewise in pneumatic manner.

Abstract: A spindle for double twisting with pneumatic threading, comprising a tubular stationary part coaxially positioned above a rotatable part containing a yarn passage conduit therein, the stationary part and rotatable part together forming a nozzle creating a venturi effect along the axial portion of the yarn passage conduit, a pressurized fluid feed conduit in the rotatable part, the stationary part defining a reception and distribution chamber in communication with the pressurized fluid feed conduit, a pressurized fluid transport conduit, a yarn clamp within the tubular stationary part and a pneumatically operated piston for overcoming the braking pressure of the clamp.

Abstract: Improved pneumatically operated yarn threading mechanisms are provided for textile yarn processing machines, such as a two-for-one twister or the like, having spindle assemblies each including a rotor mechanism with a yarn passageway extending along the axis of the spindle assembly and radially out, a stationary carrier mechanism carrying a hollow yarn supply package and including a hollow hub portion extending through the yarn package with a yarn passageway extending along the axis of the spindle assembly and joining with the rotor mechanism yarn passageway. The threading mechanisms automatically thread yarn withdrawn from the supply package through the passageways and includes air injector nozzle positioned at the juncture of the yarn passageways for selectively creating an air suction and positive air jet through the respective yarn passageways and an air duct for selectively supplying air under pressure to the injector nozzle from an air supply connector moved into and out of connection therewith.

Abstract: Device for transferring to an empty coil core a thread continuously fed to the take-up coil of a rotor spinning machine, includes a thread guide traversible along a reciprocating path between the ends of a coil core for guiding a thread onto the coil core, a thread pickup assembly having means for picking up the thread under tension before transfer thereof to an empty coil core, the thread pickup assembly being pivotable from a location on the reciprocating path to one of the ends of the coil core, the thread pickup assembly includes a thread capturing device as well as a pair of thread severing devices respectively disposed in front of and behind the pickup means in travel direction of the thread, the thread severing devices being activatable in time sequence by movement of the thread pickup so that the thread severing device disposed behind the pickup means is activatable, after capture of the thread by the capturing device, in time coordination with the pickup of the thread, and the thread severing device

Abstract: In a textile yarn processing machine, such as a two-for-one twister or the like, there is provided a plurality of yarn processing stations each including a spindle assembly carrying a supply package of yarn to be processed and a take-up assembly for forming a take-up package of yarn after processing. A yarn knotter mechanism is selectively positioned in front of the yarn processing stations in the event of yarn breakage for knotting the ends of the broken yarn extending respectively from the spindle assembly and the take-up assembly. Improved yarn transfer mechanisms are provided for withdrawing the broken end of yarn from the take-up assembly and positioning the yarn in the knotter mechanism for being knotted with the broken end of yarn from the spindle assembly.

Abstract: To effectively separate a broken end of a thread from a thread winding body a process and associated apparatus is herein proposed according to which at least two air streams are directed along the thread winding body and toward a suction air stream, with the air streams being displaced relative to one another in the peripheral direction of the thread winding body and variably inclined relative to the longitudinal axis of the thread winding body.

Abstract: Yarn guiding and threading mechanisms for use with textile machines processing yarn, such as during a threading-up operation of the textile machine, are characterized by a construction adapted for receiving a free end of yarn from a first location in the machine, for guiding the yarn from such first location and for conveying the yarn to a desired second location in the machine, as follows. An elongate tube has an air passageway therethrough, a source of suction connected to one end thereof for creating a suction therethrough for receiving at the other end of the yarn from the first location in the textile machine and for guiding the yarn through the tube, and a slot extending from the outside to the passageway along the length thereof and positioned on the side adapted to face the textile machine for subsequent removal of the yarn from the tube.