Patent ID: 6101801
Filing Date: 2000-08-15
Classification: D02G

Abstract:
In a method for handling threads in a spiralling or covering machine, wherein at least one bobbin is used to supply a first thread for unwinding during the rotation of said bobbin by traction starting from a point positioned on the axis of rotation of said bobbin and thereafter depositing said first thread on at least one second thread passing through and exiting from a spindle around which said bobbin rotates, the improvement which comprises providing and using a bobbin which is of frusto-conical shape at both of its ends, such that the geometrical profile of the lateral surface of the bobbin when viewed frontally is trapezoidal, and providing said bobbin with a plurality of flanges, one at each of its ends, the major dimension of each said flange being less than the maximum diameter attainable by the winding of said first thread on the spindle of said bobbin.