Needle thread changing device of sewing machine

Details Needle thread changing device of sewing machine Needle thread changing device of sewing machine

1997-04-04

1999-03-16

Izaguirre, Ismael

Sewing

Elements

Thread guiding or handling

D05B 2500

Patent

active

058816607

ABSTRACT:
A needle thread changing device of a sewing machine, comprises: a first thread end holding section for holding thread end portions of plurality threads respectively drawn from a plurality of spools; a thread cutting section for cutting a thread being currently used while selectively drawn from the first thread end holding section; a second thread end holding section for holding an end portion of the thread of a needle side cut by the thread cutting section; a thread selecting section for selecting a changing thread from the plurality of threads held by the first thread end holding section; a thread end portion moving section for moving an end portion of the thread selected by the thread selecting section to a predetermined knotting position; and a knotting section for connecting the end portion of the thread thus selected to the end portion of the thread currently used held by the second thread end holding section at the knotting position after the thread thus selected has been moved to the predetermined knotting position.

REFERENCES:
patent: 3067704 (1962-12-01), Pedersen
patent: 5269244 (1993-12-01), Cataletto et al.
patent: 5682830 (1997-11-01), Katou et al.

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