Patent ID: 6647905
Filing Date: 2003-11-18
Classification: D05B

Abstract:
A buttonhole sewing machine comprisinga needle (7) drivable via an arm shaft (4); an x-y table (8), which is movable by an x drive (9) in an x direction and by a y drive (10) in a y direction, which supports a first and a second work piece clamp (13a, 13b) mounted for displacement one relative to the other, and which comprises a displacement drive (44, 73) for displacing the work piece clamps (13a, 13b) relative to each other from an initial position of spread by a length of spread (d) into a final position of spread; wherein at least the first work piece clamp (13b) comprises a supporting plate (11b) for accommodation of a work piece (35) and a clamping plate (15b) which is mounted on the supporting plate (11b); and wherein a clamping drive (28b) for actuation of the clamping plate (15b) supports itself on the supporting plate (11b).