Double lock stitch

Stitches in this class are sometimes referred to as double-locked stitches, because the needle thread is interconnected with two loops of the under-thread. Applications of multi-thread chain stitches are seaming operations on all types of garments. 

Figure 4.23 Two kinds of textile electrodes with different geometries obtained by double lock stitch—standard embroidery.

Unlike the double lock stitch, the looper thread for the double-chain stitch (Fig. 10.6) is fed from a supply reel on the reel stand over guiding and thread-tightening elements to the thread-guiding gripper. The different phases of the interlacing of needle thread and bobbin thread by a double-chain stitch are as follows ... 

Simple lock stitch Double lock stitch Triple lock stitch Chain stitch ... 

Double lock stitch 2. Lap lock stitch seams... 

Blind double lock stitch seam 13. Overedge seam... 

Double-lapped felling seam system as double or triple seam 7. Multiple lock stitch seams for special tasks... 

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