Sewing – Elements – Thread cutting – severing or breaking
Patent
1996-10-11
1998-05-26
Lewis, Paul C.
Sewing
Elements
Thread cutting, severing or breaking
D05B 6500
Patent
active
057551693
ABSTRACT:
A thread cutting apparatus including a pair of blades one movable relative to the other to cut a thread, an actuating device including a cam rotatable about an axis line, and a cam follower which is movable to an operative position where the cam follower follows the cam to move the movable blade to cut the thread, and an inoperative position where the cam follower does not follow the cam, a biasing device which provides a biasing force to bias the cam follower toward the inoperative position, a first movable member which is operatively engaged with the cam follower and which is movable to a first position, and a second position to move the cam follower to the operative position against the biasing force of the biasing device, a second movable member which is movable between a third and a fourth position and which engages, when being moved from the third position to the fourth position, the first movable member to move the first movable member to the second position, and a rotary member which is rotatable with the cam and which holds the first movable member at the second position, against the biasing force of the biasing device, after the second movable member is moved from the fourth position to the third position, the rotary member permitting the first movable member to be moved to the first position, owing to the biasing force of the biasing device, after the movable blade is moved to cut the thread.
REFERENCES:
patent: 4365568 (1982-12-01), Ross
patent: 5370073 (1994-12-01), Hayashi
patent: 5372079 (1994-12-01), Kitai et al.
patent: 5477795 (1995-12-01), Nakayama et al.
Hori Masayuki
Yamasaki Hiroshi
Brother Kogyo Kabushiki Kaisha
Lewis Paul C.
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