Patent ID: 6805063
Filing Date: 2004-10-19
Classification: D05B

Abstract:
A method of pulling a free end (83) of a needle thread (62) from a top to a bottom side of at least one work piece (74, 75) upon a first stitch of a seam (81) that is to be sewn by a sewing machine, comprisinga needle (11) which is movable in up and down reciprocation, guiding a needle thread (62) that has been taken from a needle-thread supply (61) by a thread lever (64); at least one presser (25) to be placed on, and lifted off, the at least one work piece (74, 75) by a length of stroke (a); and a rotarily drivable hook (12), a tip (79) of which seizes a needle-thread loop (78) and extends it for forming a stitch, with the needle thread (62) being held tight between the needle (11) and the thread lever (64) while the needle-thread loop (78) is extended so that a free end (83) is pulled through the work piece (74, 75) by the hook tip (79), and with the presser (25) being at least partially relieved over a relief time (t) while the needle thread (62) is held tight; wherein as the at least one work piece (74, 75) increases in thickness (s), the relief time (t) rises.