초록

An electromagnetic fuel ram-injector and improved ignitor.

대표청구항 ▼

An electromagnetic fuel ram-injector and improved ignitor. torage (33) with data stored therein for displacement of the at least one first work piece clamp (17b,17″b) by a given length of spread d.2. A buttonhole sewing machine according to claim 1, wherein data are stored in the data storage

An electromagnetic fuel ram-injector and improved ignitor. torage (33) with data stored therein for displacement of the at least one first work piece clamp (17b,17″b) by a given length of spread d.2. A buttonhole sewing machine according to claim 1, wherein data are stored in the data storage (33), for displacement at least of the first work piece clamp (17b,17″b) in relation to the second work piece clamp (17a) into an initial position of spread.3. A buttonhole sewing machine according to claim 1, wherein only the first work piece clamp (17b,17″b) is displaceable in relation to the x-y table (7) and the second work piece clamp (17a) is stationary in relation to the x-y table (7); andwherein data are stored in the control unit (32) for displacement of the first work piece clamp (17b,17″b) by a given length of spread d and for displacement of the x-y table (7) in a reversed direction by half the given length of spread d.4. A buttonhole sewing machine according to claim 1, wherein the first and the second work piece clamp (17a,17b,17″b) are displaceable one in relation to the other in an opposite direction.5. A buttonhole sewing machine according to claim 4, wherein the first and second work piece clamps (17a,17b,17″b) are displaceable by only a single sliding drive (12′).6. A buttonhole sewing machine according to claim 1, wherein the electric positioning motor is a stepper motor.7. A buttonhole sewing machine according to claim 1, wherein at least the first work piece clamp (17″b) comprises a supporting plate (15″b) for accommodation of a work piece (38) and a clamping plate (19b) mounted on the supporting plate (15″b); andwherein a clamping drive (43) for actuation of the clamping plate (19b) supports itself on the supporting plate (15″b).8. A buttonhole sewing machine according to claim 7, wherein the clamping drive (43) is a pneumatic piston-cylinder drive.9. A buttonhole sewing machine according to claim 8, wherein the clamping drive (43) comprises a drive casing (45) mounted on the supporting plate (15″b) and having a cylindrical chamber (47) in which a piston (48) is arranged for displacement, the piston (48) being connected to a bearing lever (20″) which carries the clamping plate (19b).10. A buttonhole sewing machine according to claim 8, wherein the clamping drive (43) is a unilaterally actuated piston-cylinder drive.