Eyelet buttonhole sewing machine, with a looper thread tensioner/cutting mechanism, has a swing deflector to move the leading end of the clamped looper thread away from the counter cutting blade

摘要

The eyelet buttonhole sewing machine, to stitch an eyelet buttonhole seam (70), has a thread deflection unit at the thread tensioning and cutting zone, with a swing deflector (43) moving between rest and working positions. In the working position it moves the leading section of the looper thread, held in the thread clamp (53) at a trailing thread section (67), away from the counter blade (22) of the thread cutter.