The sewing machine 'Zarif' with double thread chain stitch

摘要

"Sewing machine" Zarif "with double thread chain stitch.The invention improves the quality of the line of point of double wire preventing the same from fraying from the extremities and also simplifies the construction and perfects and productivity of the machine by the U.S.The mechanism of a simpler for the bootstrap performs rotary motion. The double thread chain stitch is formed and adjusted with a turn of the main shaft of the machine.The sewing machine additionally contains adjusters of wire cam disc shaped autonomous for yarns, upper and lower, an elevator to the upper thread and lower.An elevator for wire less oscillate around its own axis geometric.The clip is mounted such that it can perform rotary motion in the vertical plane parallel to the line of point and can execute two rotations for each cycle of movement of the needle and the elevator.With the invention, a sewing machine of double thread chain stitch can be manufactured with three variants, with flat platforms, columnar and cylindrical respectively.