Rotary hook for sewing machines

Details Rotary hook for sewing machines Rotary hook for sewing machines

1990-12-18

1992-10-27

Schroeder, Werner H.

Sewing

Elements

Revolving hooks

D05B 5708

Patent

active

051580292

ABSTRACT:
A front section of a hook point member, relative to a rotating direction, of a rotating hook assembly is replaceable. The member can be replaced with a new one when a hook point is worn. Also, the replaceable member is made of a material of high hardness, such that burr-like edges will not be formed, thereby making it possible to obtain good sewing performance for a long period of time. The hook point and a claw may be formed integrally and can be replaced when the hook point and/or the claw is worn.

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patent: 4966088 (1990-10-01), Badillo
Union Special Lockstitch Formation Type 301 Booklet, cover page and p. 5, copyright 1980 Union Special Corp.

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