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US 2003/0192463 A1Published application
Buttonhole sewing machine
AssigneeDurkopp Adler Aktiengesellschaft
InventorsHeinz Fransing, Andreas Oberndorfer, Theodor Janocha
Life of this patent
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Abstract
A buttonhole sewing machine comprises work piece clamps with displacement drives for displacement from an initial position of spread by a length of spread into a final position of spread. The work piece clamp comprises a supporting plate for accommodation of a work piece and a clamping plate mounted on the supporting plate. A clamping drive for actuation of the clamping plate supports itself on the supporting plate.
Claims4
A buttonhole sewing machine, comprising
- a 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).
5 more elements
Dependencies are inferred from the claim text.