Control mechanism for driving upper looper of sewing machines

Details Control mechanism for driving upper looper of sewing machines Control mechanism for driving upper looper of sewing machines

2006-03-14

2006-03-14

Izaguirre, Ismael (Department: 3765)

Sewing

Stitch forming

Chain or double chain

Reexamination Certificate

active

07011032

ABSTRACT:
An upper looper control mechanism for sewing machines includes a control member and an end member connected between an active shaft for driving the upper looper and a connection member which is connected with the upper looper. The control member has one end connected to the active shaft or the connection member, and the other end of the control member is connected to a fixed part of the sewing machine. The users operate the control member to transfer the power of the active shaft to the connection member or to disengage the power of the active shaft from the connection member, so as to activate the upper looper or to stop the upper looper.

REFERENCES:
patent: 2946301 (1960-07-01), Hacklander
patent: 4649841 (1987-03-01), Koshinaka
patent: 4690080 (1987-09-01), Mikuni et al.
patent: 5233935 (1993-08-01), Winter
patent: 5664509 (1997-09-01), Tseng
patent: 5732639 (1998-03-01), Kojima et al.

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