Abstract: A cloth roll driving apparatus is provided adjacent to the main shaft of a weaving machine. The apparatus comprises a drive source driven in synchronism with the main shaft of the weaving machine, a slave shaft coupled to a cloth roll and a one-way clutch. Further, there are provided a first power transmission mechanism which transmits, through the one-way clutch, the rotation of the drive shaft to the slave shaft as a torque in the cloth take-up direction and at a velocity corresponding to the weaving velocity of the cloth, and a clutch mechanism which is coupled to the slave shaft while the cloth is wound around the cloth roll when the cloth roll is empty. Moreover, there is also provided a second power transmission mechanism which transmits, through the clutch mechanism, the rotation of the drive shaft to the slave shaft as a torque in the same direction as the torque transmitted by the first power transmission mechanism and at a velocity higher than the latter torque.

Abstract: A weft insertion controlling method for a multi-color shuttleless weaving machine wherein weft insertion is performed using a drum type length measuring reserving apparatus. The drum is driven at various speeds for individual weft insertion cycles of one repetition of a weaving pattern so that the weft insertion controlling method can accommodate any weft insertion condition while the location of the restraining pin for engaging with a yarn on the drum is left fixed.

Abstract: A faulty weft connected to the main jet nozzle of a loom is caught by a swingable hook pin and wound on a take-up drum arranged in front of the main jet nozzle. A cutter reciprocates into an opening provided in the path of the wound faulty weft to severe same from the weft supply. The faulty weft is removed by suction through an adjacent suction pipe.

Abstract: A method and an apparatus for automatically exchanging cloth rollers without stopping the loom, including: transferring a cloth roller from a truck to a loom when the cloth roller has taken up a given amount of cloth; mounting an empty roller on the loom while the cloth roller continues the take-up motion on the truck; and cutting the cloth between the truck and the loom to allow it to be taken up by the empty roller.