Abstract: To embroider combination patterns composed of partial patterns on sewing or embroidering machines with a driven embroidery frame, a common sewing stitch each, which is used as a hooking point, is located outside the contour of the pattern, and whose connection threads to the pattern proper are removed after finishing the second partial pattern, is formed at the end of the first partial pattern and at the beginning of the second partial pattern for the exact positioning of the partial patterns.

Abstract: An embroidery frame, comprising a closed inner frame and an outer frame open at a point and a clamping device provided on the outer frame with one laterally projecting projection each at each of the two ends of the outer frame. A stud is provided that can be fixed at one projection and a screwing device is provided that cooperates with the stud and is supported at the other projection. The stud is displaceably guided within one projection at a closely spaced location from the outside of the frame and is supported with a head on a stop face of the projection. The other end of the stud is rigidly connected to a sliding block, which is longitudinally displaceably accommodated within a guide provided in the other projection. A tie rod is led out of the other projection extending obliquely toward the outside of the frame. The tie rod is pivotably arranged at the sliding block.

Abstract: A presser foot is provided with a detachably arranged base. The base contains a needle passage opening and includes a plurality of guide grooves located at mutually spaced locations from one another on the under side of the base. The guide grooves are used for preparing pipings which extend in parallel to one another in the fabric. The middle guide groove extends centrally to the needle passage opening. The width of the needle passage opening essentially corresponds to a maximum overstitch width of the needle of a zig-zag sewing machine. A second and third guide groove extend, in a short distance, to the side of the needle passage opening. A fourth guide groove is provided with a distance from the middle guide groove which exactly corresponds to the mutual distance between the second and third guide grooves.

Abstract: An overcast sewing machine in which a plurality of different stitch types can be sewn.Various designs are disclosed for sewing alternatingly the stitch types 512 and 514, which consist of two needle threads, one lower looper thread and one overcast looper thread. In one design, the holder of the overcast looper can be fixed in a first working position, in which both needle threads are interlinked with the overcast looper thread, and can be displaced into a second working position, in which only one needle thread is interlinked with the overcast looper thread. According to another design, two thread eyes are provided in the overcast looper and the overcast looper thread is threaded through one of these thread eyes to form one of the stitch types and through the other thread eye to form the other stitch type. In addition, stitch type 504, consisting of three threads, can be formed by removing one needle.

Abstract: A top transport device on sewing machines includes a spring-loaded presser bar mounted for vertical movement, which is firmly connected with a presser foot, and with a two-armed top transport rocker in operative connection at its upper end via a connecting linkage with a feed drive and carrying a top transport foot, the rocker being mounted on a seating disposed on the presser bar. To improve the kinematic connection between top transport foot and presser foot, the seating is mounted freely displaceable on the presser bar and connected with a bearing piece fastened on the presser bar via an articulated link mechanism, at the articulated joint of which a lifting drive engages. A transitional phase of the pressure shift between presser foot and top transport foot when the latter sets down on the work and when it lifts off results by a connection of the top transport rocker with the seating via a limitedly swingable link.

Abstract: A device for holding a sewing needle which has a cylindrical shank, an arcuate portion, and a flat wall portion, in a needle bar which has a longitudinally extending receiving groove with a flat interior receiving wall comprising a locking member. The locking member has a longitudinally extending bridge part with outwardly extending arms engageable around at least a portion of the circumference of the needle bar. The arms include an upper abutment arm extending outwardly of said bridge portion into the needle bar groove and defining a stop against which the top of the needle bar is engageable. The construction includes a lower abutment arm extending outwardly from the bridge engageable with an arcuate end over the arcuate portion of the shank so as to hold the flat portion of the shank of the needle on the flat interior receiving wall of the groove.

Abstract: A method and a device for the formation of an overcast seam using a zigzag sewing machine are disclosed. After the formation of a first loop in an overstitch position of the needle bar, the needle bar, while the needle thread is slackened and the fabric is moved by one stitch length, changes to a second overstitch position in which another thread loop is made. Thereupon, the needle thread, leading from the first to the second thread loop, is pulled out to form a loop in the first overstitch position while the fabric is fed by another stitch length, the loop being offered to the needle for the stitching and released after stitching. The oversew mandrel of the device for implementing the method includes a double lever loop stripper. One arm of the double lever supplements the oversew mandrel and serves as the thread loop stripper. The other arm has a slide surface which projects into the path of motion of the needle fastening screw in the first overstitch position of the needle bar.

Abstract: A thread guiding system for sewing machine bobbin winders in which the last thread constraining eyelet is positioned laterally centrally of the bobbin spindle and a plurality of smooth surface guide pins are positioned between the thread constraining eyelet and the bobbin with the axis of each pin parallel to that of the bobbin spindle. The pins exert no lateral influence on the thread which is allowed to move freely along the pins. With this construction the distance from the last thread constraining position to the bobbin is greatly reduced from that normally required for smoothly winding thread uniformly about the bobbin.