Feed-off-arm type sewing machine for flat seaming

Details Feed-off-arm type sewing machine for flat seaming Feed-off-arm type sewing machine for flat seaming

2009-04-03

2011-10-04

Patel, Tejash (Department: 3765)

Sewing

Elements

Frames

C112S256000

Reexamination Certificate

active

08028635

ABSTRACT:
A needle bar supported in a head unit is connected with a needle bar lever extending from the inside of a sewing machine arm and the needle bar is moved up and down by swing of the needle bar lever about a supporting shaft generated by transmission from a sewing machine main shaft. The sewing machine arm and the head unit are fluid-tightly shielded by a shield plate, and a first sealing part is provided in the shield plate. The first sealing part supports the needle bar lever by fitting a portion of the needle bar lever into seal plates held between a presser plate and a back face of a seal support having a curved shape of a circular arc taken along a swinging locus of the needle bar lever. The inside of the sewing machine arm is oil-lubricated, and the inside of the head unit is grease-lubricated.

REFERENCES:
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patent: 2005-27647 (2005-02-01), None
patent: 2006-207697 (2006-08-01), None

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