main driving shaft 2 of a sewing machine body in an eccentric relation and which at its central portion is attached by a pin 6 to a lever 5 pivotably mounted on a frame 3 by a pin 4 indicated by reference numeral 7 is a long bore formed in the frame 3 accordingly if the main driving shaft 2 rotates the cloth feed lever 1 moves to draw an elliptic locus vertically and transversely in fig3 in other manner the cloth feed lever 1 may move vertically and transversely through the intermediary of its projection fitted with a cam groove which is formed in the frame 3 at an end of the cloth feed lever 1 a depending piece 8 is threadedly secured by screws 8 39 and 8 34 and a main feed rack 9 may be used to allow the same cloth feed as the conventional blind stitch sewing machine according to the present invention the cloth feed lever 1 is adapted to connect an auxiliary feed lever 10 on one end of which is mounted an auxiliary feed rack 11 in parallel relationship with the main feed rack 9 the auxiliary feed lever 10 is engaged to the cloth feed lever 1 at one.