| 摘要 |
PURPOSE: An industrial sewing machine is provided to prevent threads from separating on the sewing machine due to movement of tensile movement, and to make two structure of fabric by using two kinds of threads having different properties such as color, and thickness etc. CONSTITUTION: An industrial sewing machine including a base part with a crochet and a head further comprises a needle supporting part(30), a fabric pressure foot, an adjusting unit thereof, a driving unit forming needle sew with the crochet, a lever unit converting rotational motion of the driving unit into vertical reciprocating motion; and a connection element(50) used for connecting the lever unit with two or more needle stands(46,48) moved in a vertical direction by the lever unit. Each needle stand is selectively operated in the crochet.
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