Device for restoring a loom to predetermined operative conditions to resume working after an interruption, particularly after breakage of the weft

摘要

The device comprises: - detector means (30; 34, 35; 50) for providing electrical signals indicative of the length of warp (3) unwound at each beating-up in normal operation of the loom, - memory means (52) connected to the detector means for storing signals indicative of the warp length unwound at each beating-up, - drive means (20, 21) for causing rewinding of the warp (3) on the warp beam (2), and - control and operating circuit means (40) connected to the detector means (30; 34, 35; 50), to the memory means (52) and to the drive means (20) and arranged after an interruption of the operation of the loom, particularly due to breakage of a weft thread, to actuate the drive means (20) to cause rewinding of the warp (3) and a corresponding drawing back of the textile (T) to an extent which is in a predetermined ratio to the last value of warp length stored in the memory means (52) before the interruption.