Thread feeding apparatus for sewing machine

Details Thread feeding apparatus for sewing machine Thread feeding apparatus for sewing machine

1985-12-27

1987-03-17

Feldbaum, Ronald

Sewing

Elements

Thread guiding or handling

112270, 112278, B65H 5700

Patent

active

046498443

ABSTRACT:
The invention relates to an apparatus for feeding thread in a sewing machine. The apparatus includes a thread feeding pass, a base tension disc, a thread holding device, an encoder, and a thread feeding device. The thread feeding device includes a presser roller and a feeding roller driven synchronously with a sewing needle. When a predetermined length of thread is fed to a thread take-up lever, the thread holding device is actuated to hold and stop the thread without stopping rotation of the thread feeding rollers such that the thread slips on the feeding rollers.

REFERENCES:
patent: 4215641 (1980-08-01), Dobrjanskyj et al.
patent: 4408554 (1983-10-01), Takiguchi et al.
patent: 4566396 (1986-01-01), Sakuma et al.

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