Abstract: A device for forming store units from a thread supplied from a yarn packet. The store units are formed on a winding drum between limiting pins which may assume an operative and an inoperative position. A brake means, e.g. brake shoe, is applied to the last part of a thread winding being released from the drum in order to avoid pulls and thereby tension peaks on the thread which otherwise might cause thread failure.

Abstract: An air supply system for a pneumatic loom contains a pressurized or compressed air container connected by means of a primary valve with a pressure line or conduit. There are also provided a primary blowing nozzle and auxiliary blowing nozzles connected by means of a respective control valve with the compressed air container or reservoir. There is further provided a compressed air storage which, during standstill of the loom or weaving machine, is connected with the pressure line or conduit and, during the starting phase of the loom, is connected forwardly of the pressurized or compressed air container. In this way upon start-up of the loom the compressed air container is supplied with compressed or pressurized air by the compressed air storage, causing an extremely rapid build-up of pressure in the compressed air container.

Abstract: A supply channel for the thread has its exit end surrounded by an annular orifice. A connection is provided for supplying a flowing pressurized fluid to the upstream side of the orifice, and an elongated mixing tube is arranged to receive the thread as well as fluid discharged from said orifice and substantially forms an extension of said channel. A sleeve surrounds only the outflow end portion of the mixing tube, the upstream end of the sleeve having a sealing engagement around the mixing tube, and the downstream end of the sleeve lying in substantially the same plane as the downstream end of the mixing tube. A sleeve-shaped filling piece fills the space between the downstream end portion of the sleeve and the mixing tube and contains axial exhaust channels. A connection is provided for supplying a flowing pressurized fluid to the interior of the sleeve upstream of the filling piece.

Abstract: Apparatus for forming a supply coil from a thread supplied from a yarn stock, said apparatus comprising a stationary winding drum and a thread guide which is rotatable with respect to the drum, said drum having an adjustable circumference and being provided with means for moving axially along the drum the supply coil formed thereon, whereby the winding drum is composed of a radially fixed part, in which the means for axially moving the formed supply coil are received, and of a radially adjustable part.

Abstract: A device for watching the flowing condition of a gas in a conduit, which device is provided with a liquid tube connecting a velocity pressure point with a static pressure point, whereby the liquid tube comprises a chamber which is divided by a freely movable partition into two leak tight, mutually separated compartments and separates the liquid tube into two sections which each with one end open into a compartment of the chamber and with their other end are connected with the velocity pressure point and the static pressure point of the conduit respectively, the chamber having a volume which corresponds to the product of the maximum admissible height of the liquid column and the cross-section of the liquid tube.

Abstract: A reed baulk unit for a pneumatic weaving machine comprising a series of reed blades held in a groove in a head portion of said unit and at least one blowing nozzle housing located close to said reed blades, said blowing nozzle housing being fed from a pressurized air container through valve means which are mounted on the reed baulk and adapted to be actuated by a control shaft supported by the reed baulk, said reed baulk having an arm portion by means of which it is fixed to rocking trunnions which are rotatably mounted in the weaving machine, said reed baulk unit being characterized in that the reed baulk is formed of an extruded hollow profile, a longitudinal hollow space of which serves as said pressurized air container communicating, through an opening in the wall of the reed baulk profile, with blowing nozzle housing located on the outer side of the reed baulk profile, and control valves for said blowing nozzle housing accommodated by the blowing nozzle housing, while said control shaft is supported in

Abstract: Method of forming profiled reed blades by stamping from a metal strip, in which method the reed blades are processed while the ends thereof are still a part of the metal strip, with a final stamping out of the ends to complete the formation of the reed blades.

Abstract: A supply system for a pneumatic weaving machine, comprising a pressurized air container connected to a pressurized air conduit through a main control valve, a main blowing nozzle and a number of (groups of) auxiliary blowing nozzles, which are each connected through a control valve to the pressurized air container, whereby the blowing nozzles are together connected with an auxiliary supply conduit, which is adapted to be selectively used.

Abstract: A cutting scissors particularly for cutting yarns, having cutting edges provided on rigid scissors blades, whereby the cutting edge or edges respectively is (are) set in a connecting frame secured to the relative scissors blade at the side thereof remote from the other scissors blade, the setting portion for the blade edge bending around the rim of the scissors blade and being connected through a narrowed flexible transition portion to the securing portion of the frame.

Abstract: A pneumatic weaving machine includes an air fed weft inserting main blowing nozzle cooperating with a device arranged upstream of its inlet and adapted to intermittently interrupt the inserting motion of the weft yarn effected by the nozzle. At least one auxiliary blowing nozzle is arranged in series between the outlet of the main blowing nozzle and the adjacent end of the weaving shed of the machine, there being a free space between the outlet end of the main blowing nozzle and the inlet end of the auxiliary nozzle, through which the air stream from the main blowing nozzle laterally escapes.

Abstract: A device for forming a supply bobbin from a thread advanced from a yarn supply includes a stationary winding drum having a winding space around the drum and defining an internal chamber and a slit connecting the winding space and the chamber. A rotatably mounted thread guide means for winding yarn on the winding space of the drum is included and a plurality of pins rotatably mounted within the chamber of the winding drum are provided for movement in an axial plane with respect to the winding drum through the slit one after the other. The pins successively exit and enter the chamber of the winding drum through the slit. Means are provided for so driving the pins continuously in a fixed transmission ratio with respect to the thread guide means that the pins exit from the chamber after a predetermined plurality of yarn windings have been formed on the winding space of the drum. The pins separate successive series of yarn windings by each momentarily forming a barrier for yarn windings.

Abstract: A weaving machine of the type in which weft insertion is effected by a fluid flow and in which a plurality of notched blades arranged closely adjacent each other in front of the reed confine a guide passage for the weft threads, said guide passage being laterally open towards the reed and being adapted to move into and out of the shed in synchronism with the reciprocation of the reed, wherein each guide passage forming blade comprises at least two spaced thin blades which are mutually connected at least at the ends at which they enter and leave the weaving shed during the reed movement.

Abstract: A weaving loom of the type in which the back beam is mounted for carrying out a limited translational movement for compensating the variations in tension in the warp threads passing over it, which variations are caused by the periodic changes of the shed. An auxiliary guide for a plurality of warp edge threads is provided at at least one end of the back beam, said guide being mounted to carry out a translational movement, independently of the back beam, under the influence of an adjustable load imparted to it.

Abstract: A loom comprising two sheets of warp threads which are momentarily held in diverging planes to form a weaving shed with a conveying tunnel for wefts, a blowing nozzle arranged in position at one side of such shed to propel wefts through such shed by means of a fluid discharged from said nozzle, and a main tensioning device arranged in position at the other side of such shed, operating with a fluid jet, to tension inserted wefts during the beating up movement of the loom. The jet is so arranged that it issues substantially, transversely, and freely across the conveying tunnel to suck in the weft and is caught by a passage disposed in alignment with said jet. An auxiliary tensioning device is provided and is constructed similarly to the main tensioning device. The auxiliary device is disposed at the side of the main device. The main and auxiliary devices are used for normal and startup operations, respectively, and each has gas or air pressure supply means for normal or startup operation.

Abstract: A loom comprising a continuously operable weft yarn supply mechanism and an intermittently operable weft inserting mechanism. A tubular storage device is provided having a substantially constant shape in cross-section from one end to the other and storing weft yarn between said mechanisms, the stored yarn being in the shape of a loop having substantially parallel legs. The storage tube is in a substantially upright position and has a common entrance and exit at its lower end, said loop opening downwardly toward said lower storage device end. A suction nozzle is connected to the upper end of the storage device, and a blowing nozzle is adjacent said lower storage device end to propel weft yarn upwardly in a floating condition into the storage device, the suction nozzle helping to keep the weft yarn in such floating condition and sucking fluff away from the lower end of the storage device and discharging it.

Abstract: A substantially flat horizontal conduit has one end connected to a suction device and the other end open and located adjacent to a blowing nozzle adapted to feed the yarn to be stored. A trough-like yarn-storing means is provided immediately above and substantially coextensive with said conduit, and said blowing nozzle is spaced from and directed toward the end of said trough-like means, the axis of said nozzle extending just above the level of said conduit and at the level of said trough-like means.

Abstract: A warp tension controller for a loom comprises a warp tension sensor for generating a first signal which is a measure of the warp tension, a source of a reference signal, and means for comparing said signals and producing an output signal representing deviation of said first signal from said reference signal. An operational amplifier has an inverting input connected to receive said output signal, and has an output connected to means for adjusting the warp tension. A feedback circuit connected between said input and said output of said amplifier comprises a resistor in parallel to an integrating capacitor.

Abstract: The selvage forming device comprises a frame adapted to be connected to a heald of a loom and to guide at least one warp thread. Two superimposed members are rockably mounted in the frame, and an actuating arm is secured to one member for rocking said member, the members being hinged together so that rocking of one member causes the other member to rock in the opposite sense. Each member carries one of a cooperating pair of needles for guiding binding threads, the rocking motion of the members being such as to cause scissors motion of the pair of needles in a plane transverse to the wrap threads. The frame is provided with a plurality of vertical wires under tension for guiding the warp threads.

Abstract: A device for manipulating yarns, comprises a part movable between an operative and an inoperative position, which cooperates with an electric coil according to the principle of "magnetic pressure".