DISPOSITIVO DI AVANZAMENTO PER UNA MACCHINA PER CUCIRE

PURPOSE: To save expenditure for members and for constituting their attaching surfaces by permitting a separation feeding piece where a first feeding piece is integrally constituted with a separation board to be provided with a feeding surface on one side near a throat board and a sliding surface at a far side. CONSTITUTION: A projection 45 extending toward a head part 5 is formed between the end parts 38 and 40 of a feeding beam 39 and penetrates a notch 46 which is worked in the throat board 9. The feeding piece 47 formed in a square shape is attached to the end of the projection 45 by a screw 48. In the separation feeding piece 47, tooth-shaped feeding surface 49 is formed on a leg side extending in parallel with the throat board 9 and also at a side toward the throat board 9. The leg side is provided with the sliding surface 50 at the opposite side of the feeding surface 49 and ground to reduce a frictional coefficient. Since the separation feeding piece 47 is formed to be a square around the needle 8, the part 51 extends to a part between the feeding piece 22 and the feeding surface 26.