Patent ID: 6112684
Filing Date: 2000-09-05
Classification: D05B,D05D

Abstract:
A revolving shuttle in a double-stitch sewing machine having a horizontally arranged shuttle shaft, said revolving shuttle comprising:a shuttle body;a bobbin case rotatably seated on said shuttle body and comprising a lower part and an upper part, said upper part being made from a ferromagnetic material and being adapted for receiving a bobbin made at least partially from a ferromagnetic material and for carrying a thread supply, said lower part of said bobbin case being adapted for receiving said upper part together with said bobbin;a locking means for retaining said upper part of said bobbin case on said lower part of said bobbin case in friction-locked engagement with a certain retaining force;a thread-tightening element arranged on said upper part of said bobbin case;an end plate terminating said upper part of said bobbin case;a removal device for withdrawing the upper part of the bobbin case, together with the bobbin, from the lower part of the bobbin case, said removal device being external to said upper part of said bobbin case and comprising, at least partially, a ferromagnetic material;wherein a magnetic force of attraction between said removal device and said upper part of said bobbin case, exerted when in contact with each other, is greater than said retaining force acting between said upper and said lower parts of said bobbin case.