Sewing machine classification

There are many classification methods for sewing machines, and it is more common to distinguish them by stitches and uses. The stitches of the sewing machine can be classified into two types: lock stitches and chain stitches. Lock stitches are the most common. They consist of two stitches that are intertwined like a reel, with the interlacing point in the middle of the sewing material. From the cross-section of the stitch, the two stitches are locked like two locks, which is called a lock stitch. This type of stitch is used for sewing materials such as cotton, wool fabric or leather with a small shrinkage, and the front and back sides have the same shape as a broken line. The stitches are densely distributed and the sewing fastness generally exceeds that of manual sewing.

Chain stitches are formed by self-joining or interconnecting the loops of the stitches. Commonly used are single-chain chain, double-line chain and three-line overlock stitches. The characteristic of the stitch is that the stitch is elastic and can be stretched together with the sewing material without breaking the stitching, and is suitable for the clothing of the elastic fabric or the product and the garment which are loosely wrapped.

In addition, the sewing machine can be divided into household, industrial, and service industries according to the use. It can also be divided into manual sewing machine, pedal sewing machine, and electric sewing machine according to the driving form.