Abstract: Facilities for controllingly reciprocating a hydraulically-actuated piston coupled to a gripper shuttle are described. A first hydraulic fluid reservoir and the cylinder housing the shuttle-engaging piston are disposed in a unitary, substantially closed housing pivotally supported on a rotatable shaft of the loom. Piston-actuating fluid is cyclically introduced rearwardly of the piston into an elastomeric reservoir disposed behind and coupled to a perforated rear wall of the cylinder. Fluid from the first reservoir in the housing is periodically transferred into the second reservoir to launch the shuttle. To effect the return stroke of the piston, fluid from the first reservoir is transferred to the front end of the cylinder in timed relation to the fluid transfer to the second reservoir.

Abstract: A needle selecting system having a pair of rockable selector jacks mounted in tandem in each needle groove below the needle retained therein. The adjacent ends of the jacks are formed with butts engageable selectively by projecting elements of a pattern wheel mounted adjacent the needle cylinder, which causes the selector jacks to engage in appropriate paths in the cam system, thus displacing the needle. The cam system is arranged with surfaces which push back the selector jacks into their original position, which surfaces are formed in front of the clearing point for each yarn feed.

Abstract: An arrangement for forming sheds in a weaving machine having a plurality of operatively mounted heald shafts forming a heald shaft system. A drive shaft is rotatably mounted in the weaving machine and a plurality of eccentrics are non-rotatably mounted on the drive shaft one behind the other. A bearing is mounted on each eccentric; a rim member is mounted on each bearing and a sleeve is mounted on the rim member. One tie rod is pivotally connected to the rim member and another tie rod is threadably connected to the sleeve. The tie rods are connected via suitable linkages to the heald shaft. When the drive shaft rotates the heald shaft is reciprocated by the action of the eccentrics on the bearing and rim member.

Abstract: A plurality of portions of an open-end spinning machine are dynamically coupled to a plurality of magnetic discs for generating a plurality of pulse sequences indicative of the operating speed of the spinning unit portions, i.e., sliver supply speed, yarn withdrawal speed, etc. The so-generated sequences of pulses are routed through a cyclically operated multi-tap switch into a main and an auxiliary binary counter. The output states of the various counters are out-pulsed to a memory and to a data transmission line after being filled during each switching interval of the multi-tap switch, such interval normally being set by a clock pulse generator. In order to generate ratios of the measured quantities, i.e., the machine draft, the clock pulse generator is overridden and the auxiliary counter initially measures a quantity (i.e., the sliver input rate) indicative of the divisor of the ratio.