Patent ID: 6604476
Filing Date: 2003-08-12
Classification: D05B

Abstract:
A sewing machine for forming running-stitch seams, comprising a needle having a tip and provided, proximate to the tip, with an open eye and orientated with a needle axis thereof substantially perpendicular to a surface for supporting of an item being sewn, said needle being actuatable with a reciprocating motion along said needle axis in order to pass cyclically through said supporting surface and the item being sewn; a thread take-up wheel provided below said supporting surface, arranged on a plane that is substantially parallel to the needle axis and being orientated with a wheel axis thereof substantially perpendicular to the needle axis; said wheel being composed of a fixed part, enclosing a magazine for the taken-up thread, and of a rotatable part, which is rotationally actuatable about the wheel axis; an actuation shaft that is rotationally actuatable about a shaft axis thereof synchronously with a movement of said needle, said rotatable part of the wheel being mounted coaxially on said actuation shaft and being provided with a lower looper that engages a loop of thread carried below said supporting surface by said needle in order to load the thread in said magazine formed in the fixed part of the thread take-up wheel; and tensioning means for pneumatic tensioning of a portion of thread that lies below said supporting surface between the item being sewn and said taken-up thread magazine.