Salvatore J Rosa

US Patent:

62864459, Sep 11, 2001

Filed:

Sep 24, 1999

Appl. No.:

9/405908

Inventors:

Salvatore Rosa - Elmwood Park NJ
Louis Malchiodi - Hillsdale NJ

Assignee:

Clinton Industries, Inc. - Carlstadt NJ

International Classification:

D05B 6500

US Classification:

112288

Abstract:

A unitary double-acting piston thread cutter assembly having a housing including an integrated cutter section and drive section forming a single unitary device. The thread cutter assembly includes a universal tension mount for releasably securing the thread cutter assembly to the top plate of a variety of different types and models of sewing machine. A V-shaped moveable blade has two sides with a pivot point defined at the intersection of the sides. Along one side of the moveable blade is disposed a cutting or knife edge. A double-acting piston and drive link are disposed longitudinally in the housing and connected so that they are both displaced at the same time. The drive link is also connected to the side of the moveable blade opposite that of the cutting or knife edge, so that movement of the piston and drive link in a longitudinal direction, in turn, causes the moveable blade to be displaced, whereby the cutting or knife edge of the moveable blade engages with that of a stationary blade and severs the thread chain.