Patent ID: 6511012
Filing Date: 2003-01-28
Classification: B65H

Abstract:
An apparatus for controlling tension of a traveling yarn in an automatic winding device, the apparatus having stationary yarn tensioning elements and displaceable yarn tensioning elements which are displaceable in a defined manner with respect to the stationary yam tensioning elements, the stationary and displaceable yarn tensioning elements in engagement with the traveling yarn, and including an electrical coil being supplied with electrical current by a regulating device, the tension of the traveling yarn being regulated in proportion to an electrical coil current generated by the electrical current, wherein the improvement comprisesa pivot lever having disposed thereon the displaceable yarn tensioning elements and the electrical coil, the electrical coil having a pivoting range, the pivoting range being surrounded by an air gap having a constant width, and a magnet assembly proximately located to the air gap, the magnet assembly generating magnetic field lines emanating substantially perpendicular to the magnet assembly and traversing the air gap.