ROTARY SHUTTLE DEVICE FOR SEWING MACHINE

摘要

A rotary shuttle device for a sewing machine is provided to form a stitch authentically regardless of kinds and thick of upper thread by twisting the upper thread with lower thread through a front face of a bobbin case. A rotary shuttle device(10) for a sewing machine includes the followings: an outer shuttle device having a outer shuttle extended to a rotational direction on a part of circumference and rotating to a lower direction of a needle plate(5) placed on a bed(1); an inner shuttle device and a bobbin case installed on a front part of the outer shuttle device pivotally; and an inclination for slipping inclined to the front part of the bobbin case.