Driving device for oscillating shuttle of sewing machine

Application Number: 00108241
Application Date: 2000.04.30
Publication Number: 1273296
Publication Date: 2000.11.15
Priority Information: 1999/5/7 CH 0859/99; 1999/12/10 CH 2272/99
International: D05B57/30
Applicant(s) Name: Borrnina Sew-Machine Factry, Fritz Ggauph AG.
Inventor(s) Name: C. Andreg;A. Stucki
Patent Agency Code: 72001
Patent Agent: zhao xin
Abstract A driving apparatus for an oscillating catcher of a sewing machine includes a toothed pinion being eccentrically mounted on a driving shaft for the catcher for the sewing machine. A transmission device, having teeth, is guided in a back-and-forth movement by an oscillating crank drive, with the teeth of the transmission device engaging the tooth pinion on the driving shaft. By arranging the toothed driving gear eccentrically on the driving shaft of the catcher, it is possible to substantially increase the speed of the point of the catcher when it seizes the loop of the upper thread offered by the needle.