Patent ID: 7370592

Claim:
A sewing machine including: a reciprocally-driven needle bar; a sewing needle fixed to a distal end of the needle bar; a rotary member provided concentrically with the needle bar for rotation about an axis of the needle bar; a rotary holder member having an elongated sewn material wound thereon; and a guide for guiding the sewn material, paid out from the rotary holder member, to a sewing position of the sewing needle, the guide being provided for rotation together with the rotary member, said sewing machine sewing the sewn material onto an object of sewing while adjusting an orientation of the guide by controlling the rotation of the rotary member, said sewing machine comprising: a tension detector that detects tension acting on the sewn material paid out from said rotary holder member; and a drive device that drives said rotary holder member to rotate, driving operation of the drive device being controlled on the basis of detection, by said tension detector, of the tension.