Abstract: A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.

Abstract: A sewing machine has seam-forming tools, comprising a needle for guiding an upper thread and a looper. The needle is designed as a curved needle which is pivotable about a needle pivot axis. This embodiment is such that a distance of the curved needle from the pivot axis is equal to a radius of a curve of the curved needle about the pivot axis. The looper is designed as a looper which is rotatable about a looper rotational axis and has a lower thread reserve. The looper rotational axis runs parallel to a sewing material support region. The sewing machine can be used to produce a durable seam.

Abstract: A stitch-forming tool assembly for a sewing machine is used to produce a double-chain stitch seam. A sewing needle of the assembly can be driven up and down in a needle stitching direction perpendicular to a material to be sewn and is designed to guide a needle thread. A looper of the assembly is designed to guide a looper thread and for oscillating movement in an oscillating movement plane. The latter is spanned by the needle stitching direction and by a sewing direction along the double chain stitch seam. During an entire double chain stitch a path of movement of the looper lies completely in the oscillating movement plane. This results in a stitch-forming tool assembly in which in particular a looper drive is simplified.

Abstract: A thread finger assembly for a sewing machine has at least one thread finger. The latter can be actuated between a loop engagement position and a loop pull-out position. The loop engagement position serves for the engagement of the thread finger in a thread loop generated by the sewing machine in a stitch forming region. The loop pull-out position is displaced relative to the loop engagement position for pulling out the thread loop with the thread finger, away from the stitch forming area. A thread finger drive serves for actuating the thread finger between the loop engagement position and the loop pull-out position. This results in an assembly of a sewing machine with which an appealing seam pattern is generated in a reproducible manner at a seam beginning.

Abstract: Sewing machine with a sewing machine housing (2) comprising a lower housing part (3), an upper housing part (4) with a sewing head (6) and a stand (5), which connects the lower housing part (3) to the upper housing part (4), wherein the upper housing part (4) comprises a stand-side arm housing section (7), a head-side arm housing section (8) and a joint (23), wherein the joint (23) is arranged in such a manner that the head-side arm housing section (8) can be swiveled between a preparation position for the picking up/delivering of a sewing material and a sewing position for sewing the sewing material.

Abstract: Sewing machine with a sewing machine housing (2) comprising a lower housing part (3), an upper housing part (4) with a sewing head (6) and a stand (5), which connects the lower housing part (3) to the upper housing part (4), wherein the upper housing part (4) comprises a stand-side arm housing section (7), a head-side arm housing section (8) and a joint (23), wherein the joint (23) is arranged in such a manner that the head-side arm housing section (8) can be swiveled between a preparation position for the picking up/delivering of a sewing material and a sewing position for sewing the sewing material.

Abstract: The present application discloses an apparatus for consolidation welding of an electrical conductor, in particular to an electrical terminal, preferably for resistance-monitored circuitry in a motor vehicle, having a bottom welding tool, on which a conductor section to be consolidated can be arranged, as well as three movable welding tools, whereby with a movable welding tool, which has two translational degrees of freedom, a width of the conductor section to be consolidated can be variably adjusted with reference to the bottom welding tool, and the other two movable welding tools can be moved in such a way that they seal off a compression chamber delimited by the width of the conductor section to be consolidated in a direction of its perimeter.