Patent ID: 6578503
Filing Date: 2003-06-17
Classification: D05B

Abstract:
An embroidery sewing machine having a lower thread winding device for guiding a thread for a lower thread to a bobbin in a hook and for rotating the bobbin to wind the thread thereupon, comprising an embroidering device for forming an embroidery on a workpiece held in an embroidering frame to be moved in X and Y directions, anda control means for controlling at least said embroidering device and a needle; wherein when an amount of the lower thread wound upon the bobbin is lessened, said control means moves the embroidering frame in a direction from the formed embroidery to a corner of the embroidering frame to perform an operation such that the needle is located at a position inside the corner of the embroidering frame where the needle is moved upwardly and downwardly, until the lower thread remaining in the bobbin is completely extracted from the bobbin.