Patent ID: 6170416
Filing Date: 2001-01-09
Classification: D05B

Abstract:
A bobbin holder for attachment to a conventional sewing machine's bobbin winder for mounting a spool having a bore, said bore having a bore diameter and a circumference around the bore diameter and said sewing machine have a top, which bobbin winder has a top and a disengagement mechanism having a sensor means at a sensor height, said sensor means for terminating the winding upon sensing the thread extending beyond the disengagement mechanism's maximum acceptable diameter at the sensor height so as to provide for continuous winding of thread onto a spool comprising:(1) a post defining a flange said flange having a bottom and having a diameter greater than the diameter of the sensor means and below the sensor means, said flange having a flat base for supporting the post against the bobbin winder top said post having a diameter at the height of the disengagement mechanism sensor which is less than the disengagement mechanism's maximum acceptable diameter(2) said post further comprising a tapered protrusion, said tapered protrusion having along the taper an end diameter substantially equal to the spool bore diameter and where said tapered protrusion inserts into the bore to secure the post to the spool by means of the frictional contact between the end diameter and the bore circumference.