Abstract: A yarn-delivery device serving as a yarn feeder for textile machines is proposed. To provide an optimum regulation of the yarn transport even for more than one yarn, the yarn-delivery device has a storage drum which is made in one piece with the rotor or armature of the drive motor and which has on its circumference a wire lattice formed by wires arranged in an X-shaped manner. To regulate the yarn tension from the consumer, there is a yarn-tension sensor, the mechanical deflection of which causes an electronic adjustment of the drive motor.

Abstract: A yarn feeding apparatus for yarn-processing textile machines such as circular knitting machines has a feed element which advances the yarn with its circumference. The feed element is rotatably supported on a holder which is arranged to be secured on a carrier and has yarn guide and/or monitoring devices for the yarn being fed to and/or delivered by the feed element. The feed element is driven by a regulated electric motor disposed on the holder. To provide for yarn feeding apparatus which is both compact and inexpensive, the electric motor is a stepping motor coupled to at least one yarn feed element, which advances a yarn in a slip-free manner with its circumference, each element having its own yarn guide and monitoring devices associated with it.

Abstract: An apparatus intended particularly for pulling filamentary spooled material, such as yarn, from a spool has a spool holder, receiving the spool, and a flyer arm, preferably rotatably supported about the axis of the spool. The flyer arm carries yarn guide elements for the spooled yarn arriving from the spool and traveling to a yarn user. In order to assure gentle, regulated pulling off of the spooled material, the arrangement is such that the flyer arm and/or the rotatably supported spool holder is coupled with a speed controlled electric drive motor, and the flyer arm has sensing means which scan the spooled yarn arriving from the spool and emit an output signal representative of the spooled yarn travel speed with respect to the flyer arm. The speed of the drive motor is synchronized with the output signal of the sensing means.

Abstract: A yarn supply apparatus for yarn-using textile machinery has a rotatable yarn supply element (4) supplying yarn under slip free conditions at a predetermined tension, which is driven by a speed-controllable electric drive motor (6), the speed of which is controlled in accordance with the output signal of sensing means (7, 9) monitoring the travel speed of the yarn (11) supplied by the yarn supply element. In order to provide an apparatus which operates independently of external synchronizing means, the arrangement is such that the speed of the drive motor is synchronized with the sensing means output signal (36), which is representative of the yarn supply speed, and the sensing means (7, 9) are located at a distance behind the yarn supply element (4), as viewed in the direction of yarn travel.

Abstract: A yarn storage and delivery arrangement, particularly for textile machines, has a storage drum (4) that has a number of elongated yarn support elements (12) arranged evenly around the circumference at equal radial distances from the drum axis; and having yarn storage contact sections (13) to store several loops or turns of a storage winding. To achieve a simple, low-inertia design of the storage drum, the yarn support elements (12) are formed by U or L-shaped narrow bails or wire elements fastened at least at one end to the drum body (5) and guided at the other end by the drum body or a part connected thereto.

Abstract: A yarn brake, particularly for textile machines, has a pivoted, low-inertia yarn drum that is wrapped several times by yarn in a slip-free manner in a yarn contact section and is non-rotatably secured to a low-inertia armature of a controllable electric motor which is driven by the moving yarn against its impressed sense of rotation.

Abstract: A yarn feeding or supply apparatus for textile machines, particularly knitting machines, has a rotatable storage drum supported on a holder, which can be coupled to a drive source setting it into rotation and having yarn guide elements for directing yarn to and from the drum associated with it.

Abstract: A diaphragm pump includes a drive shaft (2), a hub-like bearing member (3) fastened thereto and a radial ball bearing whose inner race (4) is pulled over the bearing member (3), with the ball bearing axis (5) intersecting the shaft axis (6) at a small angle and with the point of intersection (7) being spaced from the ball bearing. The pump further includes a wobble finger, essentially provided by a screw (11), which is fastened to the outer race (8) of the ball bearing so as to connect the outer race with a tightly clamped-in diaphragm (13). The point of penetration (24) of the wobble finger axis through the diaphragm (13), when its path of movement is in the center position, lies in the common plane with the point of intersection (7), this common plane being perpendicular to the shaft axis (6). The improvement provided by the invention is that the wobble finger is clamped to the outer race (8) of the ball bearing by means of a clamping member (9, 10) which acts in the direction of the ball bearing axis (5).

Abstract: This invention is directed to an oil lubrication system for lubricating the beds of knitting machines. This is provided by individual intermittently functioning plunger pumps operated by electronic switching arrangements for individual adjustment to prevent clogging.

Abstract: A compressed air motor comprises a cylinder with a piston slidable in said cylinder and connected to a compressed air inlet through a slide valve mechanism which alternately admits respective opposite sides of the cylinder with compressed air for driving the piston in the opposite direction, and which also alternately vents the side of the cylinder in which the piston is moving. The construction includes an action rod mounted for movement in a direction parallel to the piston on each side thereof which is contacted by the piston after predetermined movement thereof. A snap-action lever mechanism is connected between the action rod and the slide valve mechanism so that the action rod, through the snap-action lever mechanism reverses the slide valve during each motion of the piston. The action rod member is returned to its starting position during the return movement of the piston by means of a stop member connected to an extension of the piston.