Sewing machines became widespread; they are key process equipment in the manufacture of clothing. The appearance of the first sewing machines dates back to the end of the EIGHTEENTH and early NINETEENTH centuries, the 

value of the machine in the clothing industry is very large, as for topstitching on the machine requires time hundreds of times less than the manual method. The quality of performance of machine lines is much higher manual. 

BUILD MACHINE QUILTING

The connection of tissues on the machine using two intertwining strained thread: thread needle and thread the Shuttle. According to the method of weaving thread machine the stitches are divided into Shuttle and chain. 

 Shuttle a two-line stitch is most prevalent. It is called the Shuttle because in the formation of stitches involved working on a car - Shuttle. The Shuttle stitch one thread is located on top of the fabric, the other on the bottom, the weaving of threads going on inside sew fabrics. Due to the fact that both the thread tension and tend to straighten up the fabric in the seam are pressed (sewn) to one another.

A method of forming a lockstitch (Fig. 2) is the following. The fabric passes through the loop of thread A (thread the needle), cut from the spool. Under the tissue loop is expanded and fortified with a hook around the bobbin, on which is wound the thread B (thread hook). When the loop is completely circled around the bobbin, there will be a weaving of threads A and B. If the loop of the upper thread And pull up the lower thread B is retracted inside the fabric, and the stitch is tightened. 

 Chain stitches can be one-, two -, and thread. In the formation of chain stitches is used instead of a Shuttle looper, which can be made thread (with a two-line stitch).

The nose of the looper in a single stitch captures the loop of the needle, it expands and holds the loop to the new puncture needle, which falls into the previous loop. 

In the formation of chain stitches slightly increases the consumption of thread in comparison with the Shuttle, but the chain stitches more elastic and stronger.