Abstract: At the time of cutting stacked sheet members, a knife or a punch pierces the sheet members at positions such as along a cutting line, in a region outside the cutting line, or in a seam allowance inside the cutting line. By moving the knife or the punch vertically, heat is applied to the sheet members such that the seam members are welded (i.e., fused) together vertically. Even if at the time of cutting stacked sheet members having low air permeability, it is possible to prevent warpage or slippage of the sheet members, and cutting is performed accurately.

Abstract: A carriage allows accompaniment of a movable yarn guide as well as a yarn carrier, and accompanies the movable yarn guide with the yarn carrier. If there is a course where the accompaniment of the movable yarn guide is not possible, the movable yarn guide is accompanied beforehand to a position in a preceding course where the accompaniment becomes possible.

Abstract: A carriage allows accompaniment of a movable yarn guide as well as a yarn carrier, and accompanies the movable yarn guide with the yarn carrier. If there is a course where the accompaniment of the movable yarn guide is not possible, the movable yarn guide is accompanied beforehand to a position in a preceding course where the accompaniment becomes possible.

Abstract: Two blades (14, 14) of a slider of a compound needle move back into blade grooves (8, 8) of a needle body (4) on the left and right side of a partition wall (9). An opening (18) is provided at the front ends of the blades (14, 14), and curved portions (19, 19) are provided on the backside of the front ends of the blades. Further, a thick section is provided at the front end of the partition wall (9), and a thin section is provided on the backside of the thick section. When the blades move forward from the blade grooves, the blades are centered at the thick section so that even if a lateral force is applied from a knitted loop to the blades, deformation of the blades is prevented by the contact of the two blades at the curved portions. In the blade grooves, the curved portions contact the thin section of the partition wall such that the force applied between the blades and the blade grooves does not increase.

Abstract: At the time of cutting stacked sheet members, a knife or a punch pierces the sheet members at positions such as along a cutting line, in a region outside the cutting line, or in a seam allowance inside the cutting line. By moving the knife or the punch vertically, heat is applied to the sheet members such that the seam members are welded together vertically. Even if at the time of cutting stacked sheet members having low air permeability, it is possible to prevent warpage or slippage of the sheet members, and cutting is performed accurately.