Loopers

An overlock sewing machine is distinguished from a lockstitch sewing machine by the use of loopers rather than a bobbin. Loopers are used to produce thread loops that extend from the needle thread to the fabric's edges, enclosing the fabric's edges within the seam.

Located near the needle, the looper is a small, hook-shaped mechanism that aids in the stitching process. The job of the looper is to take the thread from the needle and pull it through the fabric to form a loop. The loop is then released, and a stitch is made when the needle catches it. Both upper and lower loopers can be found among the various options for sewing machine loopers. The thread is pulled through the fabric by the upper looper, which is situated above the fabric and directly above the needle. When sewing, the upper looper raises the fabric, and the lower looper, which is underneath, catches the thread and pulls it through. A looper on a sewing machine allows for the quick production of robust, reliable stitches. The looper mechanism is optimized for speed, allowing you to sew more stitches in the same amount of time. Those who sew for a living or who have a lot of projects on the go will find this to be especially helpful.

A presser foot secures the cloth to a metal plate beneath the needle. Each stitch begins with the needle pulling a loop of thread through the cloth. A looper device that works in lockstep with the needle captures the thread loop prior to the needle pulling up. Precision stitching relies heavily on the use of loopers. Together with the needles, they help achieve uniformly spaced loops that provide for neat stitches. This accuracy is very useful for stitching clothing or other objects that demand careful attention to detail. Thread waste can be reduced with a properly adjusted looper. Sergers make good use of thread, making them particularly economical for large-scale or bulk stitching jobs. Sewing more cheaply is possible with less thread wasted. Loopers simplify the sewing process by completing raw cloth edges and removing excess thread at the same time. This drastically reduces the amount of time needed to accomplish jobs. Commercial and production sewers can benefit greatly from the time savings afforded by a high-quality looper.