Thread clamp for sewing machines

Details Thread clamp for sewing machines Thread clamp for sewing machines

1986-05-01

1987-04-07

Feldbaum, Ronald

Sewing

Elements

Thread end clamps

112285, D05B 5300

Patent

active

046551522

ABSTRACT:
A thread clamp for sewing machines comprises a helical spring as a clamping element which is disposed in a bore extending crosswise to the feed direction of the work in a guide piece placed on the stitch plate. To obtain a very short closing path, the helical spring has in the region of the respective thread pull-off path windings whose mutual distance is greater than in the other regions. The helical spring is compressible by a setting drive for the fixed clamping of the threads.

REFERENCES:
patent: 3614006 (1971-10-01), Pararra

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