a blindstitch machine provided with a mechanism for feeding an end of the fabric to a position where a needle of the machine main body passes thereby to form the seam from the start end of the fabric , wherein the rotating amount of a belt is adjusted corresponding to the feeding amount of a feed dog of the machine main body , for instance , adjusted to synchronize the fabric feeding by the machine main body with that by the belt , so that the fabric is sewed without being wrinkled or stretched about the passing position of the needle .