EMBROIDERY SEWING MACHINE

摘要

PURPOSE: To properly detect a bobbin thread breakage based on needle thread movement level in response to the needle thread movement level and/or timing differing depending on the characters of the needle thread and an object to-be- embroidered and the various patterns of embroidering. CONSTITUTION: This embroidery sewing machine is capable of directly detecting a needle thread breakage and indirectly detecting a bobbin thread breakage base on the movement of the needle thread Y associated with embroidering proceed, wherein the sensitivity for detecting the thread breakages can be set in advance.