Automatic bobbin winding system

Sewing – Stitch forming – Revolving-hook type

Patent

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Details

112221, 112273, 112279, D05B 5708, D05B 5900

Patent

active

042167337

ABSTRACT:
An automatic bobbin winding system for lockstitch sewing machine having the capability to wind needle thread around said bobbin while said bobbin is supported within the looptaker of the sewing machine wherein a depleted condition of the bobbin is sensed causing the work feed system to be disconnected, the bobbin winding system to be enabled and endwise reciprocation of the needle bar to be suspensed after needle thread is introduced into the bobbin winding system in order to fully wind the bobbin supported within the looptaker. When the bobbin is completely wound, a full bobbin sensing device is activated which terminates the bobbin winding, reinitiates the work feeding system and the endwise reciprocation of the sewing needle in order to continue stitching at that point where bobbin thread depletion was first sensed.

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