Thread securing device in a sewing machine

Details Thread securing device in a sewing machine Thread securing device in a sewing machine

1989-04-21

1991-04-02

Reynolds, Wm. Carter

Sewing

Elements

Take-ups

112225, 112255, D05B 4900, D05B 8700

Patent

active

050039008

ABSTRACT:
A thread securing device in a sewing machine wherein an upper thread located along a thread guiding path is caught during the travel of a thread take-up member to effect automatic hooking of the thread thereto. The thread securing device includes a thread saving member capable of saving an amount of the upper thread corresponding to a predetermined amount of the upper thread to be taken up by the thread take-up member during its movement from a thread loosening position to a thread take-up position, and capable of feeding the saved amount of the upper thread freely in accordance with the thread take-up movement of the thread take-up member; and an actuating member adapted to catch the upper thread extending along the thread guiding path when the thread take-up member is not holding the upper thread and then supply an amount of the upper thread corresponding to the predetermined amount, to the thread saving member.

REFERENCES:
patent: 4215641 (1980-08-01), Dobrjanskyj
patent: 4590879 (1986-05-01), Matsubara et al.
patent: 4651660 (1987-03-01), Oshima et al.
patent: 4688501 (1987-08-01), Mikuni et al.
patent: 4766827 (1988-08-01), Matsubara

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