Improved device for automatically varying the position of the shed vertex in a loom

摘要

A device for automatically varying, during the transient states following loom stoppages, the shed vertex position in said loom, consisting of a sensor for determining the beat-up pulse intensity of the loom reed and connected to a comparator which also receives a predetermined set value corresponding to the beat-up pulse intensity of said reed during normal working, the output of said comparator being used, via a control unit, to synchronously drive said electric motors operating the beam and take-up roller of said loom respectively. Preferred embodiments are also described.