Sewing – Elements – Thread guiding or handling
Patent
1989-07-20
1990-08-14
Schroeder, Werner H.
Sewing
Elements
Thread guiding or handling
112225, 112270, D05B 5500
Patent
active
049477730
ABSTRACT:
The upper end portion (44) of a needle (10) is received within a blind socket (38) which extends axially upwardly into a lower end portion of a needle bar (12). A set screw (42) is received within a set screw opening (40) which intersects the socket (38). The set screw (42) is tightened to secure the needle (10) to the needle bar (12). The lower end portion of needle bar (12) includes an inclined side surface (24). Side surface (24) truncates the lower end portion of the needle bar (12). A circumferential groove (34) is provided on the remaining part of the lower end portion of needle bar (12), closely adjacent a lower end surface (30). A chamfer (32) is provided at the periphery of the end surface (30). Chamfer (32) functions to cam a snap ring (36) onto the lower end portion of needle bar (12) and into the groove (34). The inclined side surface (24) and a confronting portion of ring (26) defines a thread guide eye (46).
REFERENCES:
patent: 154084 (1874-08-01), Rehfuss
patent: 317749 (1885-05-01), Dimond
patent: 419584 (1890-01-01), Coombs
patent: 927795 (1909-07-01), Haussler
patent: 1820119 (1931-08-01), Chason
patent: 2582211 (1952-01-01), Turner
patent: 2692569 (1954-10-01), Ketterer
patent: 3040681 (1962-06-01), Kastrup
patent: 4246857 (1981-01-01), Gonnai
patent: 4776293 (1988-10-01), Yoshida
patent: 4886004 (1989-12-01), Ogawa
Barnard Delbert J.
Izaguirre Ismael
Schroeder Werner H.
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