摘要:
The present sewing thread tension and releasing attachments are attachable to a sewing machine and operate to normally maintain a tension on the thread being fed to sewing machine needle by passing the thread between a pair of discs resiliently held together and at times pneumatic means are operated to separate said discs to release the thread whereupon further pneumatic means pull the thread towards the needle to permit the severing of the thread from a work piece.
摘要:
An improved demountable control system for cyclically operated stitching machines. The system interlocks the functions of (1) raising and lowering of the fabric-holding presser foot, and, (2) machine starting, with preexisting machine functions. A singlefoot pedal serves for operator control.