Abstract: In the weaving machine warp threads (24) are guided from a warp let-off apparatus (2) via a shedding apparatus (6) to a fabric take-up apparatus (4). The weaving machine contains a main drive (8) at which are connected a weaving reed (14) and a filling thread inserting element (16). In addition, an auxiliary drive shaft (46) is connected at the main drive (8), which auxiliary drive shaft (46) drives the warp let-off apparatus (2), the fabric take-up apparatus (4) and the shedding apparatus (6). A common drive shaft (66) of the warp let-off apparatus (2) and of the fabric take-up apparatus (4) is connected with the auxiliary drive shaft (46) via a reversing gear unit (10). The reversing gear unit (10) is constructed as a superimposed gear unit and contains an auxiliary motor (90) in order to superimpose a reverse rotational movement of the warp let-off apparatus (2) and the fabric take-up apparatus (4).

Abstract: A needle-ribbon weaving machine having a main drive shaft (2) to which are connected a weft needle drive (4), a reed or weaving blade drive (6), a knitting needle drive (8) and a shedding or yarn forming drive (10). A crank pin (22) connected to the main drive shaft (2) is connected by a connecting rod (24) to a rocking lever (28) of the reed or weaving blade drive (6). The weft needle drive (4) is not directly connected to the main drive shaft (2) but, in order to reduce noise and to improve the efficiency, it is articulated by a coupling rod (40) to a rocking rod (38) connected to the rocking lever (28) through a shaft (30).

Abstract: A device for supply and control of a thread for a textile machine includes a thread conveying roller continuously driven at constant speed and conveying depending on the thread tension, a flexibly retained movable first thread guidance loop arranged at the outlet side of the thread conveying roller, a spring for biasing the first thread guidance roller, and a second thread guidance loop arranged on the side of the thread conveyance roller which faces away from the first thread conveyance loop. Instead of the second thread guidance loop, a fixed thread guidance loop defining a guidance aperture may be provided. The device for supplying and regulating a thread is intended particularly for a loom and has the advantage that it is of simple construction and makes possible a jerkless thread conveyance.

Abstract: In a warp knitting machine, warp stitch rows are formed from warp threads which are held together at least by a weft thread. Patterned threads are applied to the warp rows and are fed in a manner similar to the warp threads. For this purpose, a warp thread guide (18) and pattern thread guides (24) are positioned in front of the knitting needles and are moved over the knitting needles. At the sections of the knitting which are to receive a pattern, the pattern threads are applied on top of the warp threads resting in the needles and are knitted together. At the locations where no pattern is desired, controlled thread retainers prevent the insertion or threading of the pattern threads into the knitting needles and hence the knitting of the pattern threads in with the warp threads does not take place. At the pattern-free locations, the pattern threads are simply inserted into the warp stitch rows.

Abstract: A single heddle control device having a selecting device containing lifters which are actuated by knives of a knife device. The knife device is connected in a drive arrangement with a shaft drive of a weaving machine and the selecting device has coupling means which are formed from the lifters and electromagnetically actuated control projections. The coupling means arrest the lifters in a starting position which corresponds to the stroke position which opposes a pretensioning force of the single heddles. The electromagnets of the selecting device are connected with an electronic pattern control apparatus.

Abstract: A drive assembly or gear unit is formed with a drive unit which is rotatably supported on a power output shaft between two bearing positions on the output shaft. The drive unit includes a pair of crankshafts which are offset relative to each other by 180.degree., with each of the crankshafts carrying planet wheels which mesh with a stationary sun gear. The crankshafts are formed with cranks which cooperate with the arms of a twin-armed rocker member which is rotatably affixed to the output shaft in order to apply driving force thereto.

Abstract: In a gear unit for generating a non-uniform power take-off from a uniform drive, such as for the shedding mechanism of a weaving machine useful in a ribbon weaving machine, a driving member in the form of a driving cage is rotatably mounted on a power take-off shaft. A crankshaft is supported between two side walls of the driving cage and is connected to a planet pinion which is in meshed engagement with a stationary sun gear concentrically arranged around the power take-off shaft. A swing arm is secured on the power take-off shaft and a connecting element is hinged to the crankshaft and is connected by a bolt to the swing arm. The bolt is supported on both sides extending from the connecting element.

Abstract: In a coupling arrangement for a textile machine, a drive shaft can be intermittently rotated and a connecting member encircles and is connected to the drive shaft by an eccentric hoop located between them. A coupling key is displaceable between a first coupling recess associated with the drive shaft and a second coupling recess associated with the connecting member. The coupling key is retained in the recesses by lead cams. A retaining key, independent from the coupling key, is supported by the eccentric hoop. The retaining key cooperates with a first retaining recess on the drive shaft or with a second retaining recess on the connecting member. The retaining key and/or the retaining recesses have control surfaces which provide the displacement of the retaining key when the drive shaft overtakes the eccentric hoop or the eccentric hoop overtakes the connecting member.

Abstract: In a coupling arrangement for use in a textile machine, a drive shaft can be intermittently rotated and a connecting member encircles and is connected to the drive shaft by an eccentric hoop located between them. A coupling key is displaceable between a coupling recess associated with the drive shaft and a coupling recess associated with the connecting member. The coupling key is retained in the recesses by lead cams. A shifting ring displaces the coupling ring alternately between the coupling recesses. The shifting member can be pivoted between two positions and a spring biases it into one of the positions. A control device moves the shifting member between its two positions. The control device includes a rotatable shaft with a rocking lever fixed to it. The rocking lever engages the shifting member for moving it from one position to the other against the biasing action of the spring.

Abstract: The apparatus includes two retaining elements associated with the control elements, two actuating elements associated with the retaining elements, a shaft acting on the actuating elements in order to pivot the latter and to displace them in translatory motion, and an electromagnet which can be optionally energized and deenergized.The shaft is oscillatingly driven in accordance with the motion of the control element at the timing of the loom. The actuating element is brought into contact with, and out of contact from, the electromagnet independently of the control cycle and is displaced in the direction of the retaining element only when the electromagnet is not energized. The actuating element need therefore be displaced only once during the period of time defined by the clearance S, so that the operating speed of the loom can be increased.

Abstract: A loom includes a plurality of reciprocatably displaceable heald devices each generally disposed in a respective one of a plurality of parallel planes, and a plurality of levers each coupled through an intermediate element to a respective one of the heald devices. The respective pivot axis of each of at least two levers is differently spaced from the respective intermediate element to cause a respectively different displacement stroke for each of the at least two heald devices connected thereto. The respective pivot axis of each of the at least two levers is differently spaced from a plane which extends centrally of each heald device, parallel to the line of displacement thereof and perpendicularly to the planes of the heald devices.

Abstract: An arrangement for severing webs, particularly fabrics, of thermally severable materials includes a severing tool which is mounted on a support for displacement between an extended position and a retracted position thereof, being urged towards its extended position. The severing tool has a severing portion which is heated and which contacts and severs the web during the movement of the latter longitudinally of itself in a path past the support for the severing tool. A heat-conductive member is in heat-transmitting contact with the severing tool at the severing portion thereof in the extended position of the severing tool, the heat-transmitting relationship being interrupted when the resistance of the web to the severing action of the severing portion achieves such a value that the severing tool is displaced from its extended position toward its retracted position.

Abstract: A web weaving machine is disclosed. The machine comprises a plurality of heald shafts disposed to have a plane of symmetry common to one another and a plurality of tension transmitting elements. At least one of the elements is flexible and is guided by at least one roller. Each tension transmitting element is connected to a respective heald shaft at a portion thereof which is disposed in the plane of symmetry and each element is so disposed as, in use, to transmit a force to the respective heald shaft which is directed substantially parallel to the healds thereof.