Sewing machine
AssigneeKSL Keilmann Sondermaschinenbau GmbH
InventorRobert Keilmann
Life of this patent
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Abstract
A sewing machine including a sewing machine upper portion with a frame, a needle rod and a sewing foot rod, which rods are guided in the frame for back and forth movement parallel to one another, a rack connected with each of the rods and which racks are driven by separate pinions driven by separate electric motors. These motors and possibly other motors for positioning other parts of the sewing machine are separately controlled independently of one another by a program controlled control unit so that the movement of needle road and of the sewing foot rod can be independently program controlled during a sewing procedure.
Claims8
A sewing machine comprising a sewing machine upper portion with a frame, a needle rod and a sewing foot rod which are guided parallel to one another in the frame for back and forth movement, and a drive arrangement for the needle rod and the sewing foot rod, characterized in that the needle rod and the sewing foot rod are each connected with a rack, each of which racks meshes with a drive pinion and each of which pinions is drivable by its own program controlled electric motor.
Dependencies are inferred from the claim text.