Thread measuring and feeding apparatus for a sewing machine

Details Thread measuring and feeding apparatus for a sewing machine Thread measuring and feeding apparatus for a sewing machine

1986-05-30

1988-08-30

Nerbun, Peter

Sewing

Elements

Thread sensing

112242, 112302, D05B 4704

Patent

active

047668270

ABSTRACT:
An apparatus for feeding thread for a sewing machine comprising a thread feeding system for guiding the thread (14) from a spool (13) to a take-up lever (2) of the sewing machine (A). The thread feeding device is comprised of a pressure roller (10) and a feed roller (8) driven by a motor, an encoding device (17) installed on the main drive shaft of the sewing machine, an encoder (8a) for measuring the length of the thread fed, and a thread holding device (11), whereby when the encoding device (17) gives the signal to the thread holding device to release the thread, the thread feeding device feeds the thread for completing one full stitch, and the encoder (8a) actuates the thread holding device (11) to hold the thread during the stitching.

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.
patent: 4590879 (1986-05-01), Matsubara et al.
patent: 4632048 (1986-12-01), Matsubara
patent: 4649844 (1987-03-01), Matsubara

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