Thread snipping is no longer required at the beginning and end of sewing. This is a high-performance machine that is ideally suited to the sewing of car seats. Thread snipping work that has traditionally been required by conventional machines can now be virtually eliminated, there by drastically increasing productivity. In addition, jut-out thread problems or accidents in which the material is damaged by scissors during sewing can be prevented. The machine contributes to reduced cost and upgraded quality in the sewing of car seats.