An overlock chain stitch elastic attaching sewing machine is a type of industrial sewing machine used to attach elastic to garments or other fabrics. It is designed to sew a chain stitch that forms a looped pattern along the edge of the fabric. This type of stitch is strong and secure, and is often used to finish the edges of fabric or to attach elastic to lingerie, swimwear, and other garments. The machine is equipped with an adjustable presser foot, allowing for precise control of the stitch length and tension. It also has a guide plate to ensure the elastic remains in place while being stitched.