Needle guard

Details Needle guard Needle guard

2006-05-02

2006-05-02

Izaguirre, Ismael (Department: 3765)

Sewing

Elements

Revolving hooks

C112S227000

Reexamination Certificate

active

07036443

ABSTRACT:
A gripper hook for a sewing machine. The sewing machine includes a needle, a stitch plate and a housing for the gripper hook. The gripper hook includes an open cylinder and is rotatably mounted on a horizontal axis. A bobbin basket is supported inside the gripper hook receives a bobbin case. The bobbin case houses a bobbin. The needle, in executing a stitch, is brought down perpendicular to the axis of the gripper hook in front of the open part of the gripper hook through an opening in the wall of the bobbin basket such that a gripper hook tip catches the upper thread and leads the upper thread around the bobbin basket. The gripper hook has a side wall that is at least wide enough for the side wall to protect the bobbin basket from being struck by the needle when the needle tip is out of alignment.

REFERENCES:
patent: 4009670 (1977-03-01), Mitchell
patent: 4660485 (1987-04-01), Morgan
patent: 4858543 (1989-08-01), Badillo
patent: 5188046 (1993-02-01), Badillo
patent: 5189972 (1993-03-01), Mitsui et al.
patent: 5974995 (1999-11-01), Sato
patent: 6076477 (2000-06-01), Badillo
patent: 6745712 (2004-06-01), Fujinaga et al.
patent: 69204337 (1992-10-01), None

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