Rotary needle thread cutter - replacing gripper cutter to draw long thread loop to prevent seam running

摘要

Rotary needle thread cutter in single needle system chain stitch blind stitch sewing machines in which the needle thread is not cut by the gripper as the thread ends are short and seams are running and thread is pulled through the neelde eye is formed by a clevis one arm of which pulls the thread loop supported by the gripper and the other arm cuts the loop against a stationary knife blade.