mechanisms cause the rectilinear strip 11 for forming a belt 14 to assume a shape in which the lower line of stitches 12 are of greater length than the upper line of stitches 13 with the above described apparatus it is possible to form a shaped belt 14 independently or during fabrication thereof to simultaneously attach the belt to an article of clothing 15 by means of the lower line of stitches 12 the above described apparatus can also be utilized to fabricate a shape belt 14 by utilizing a strip of material that has been pre formed to produce the desired belt configuration with one feeding mechanism having a longer feed stroke than the other two parallel lines of stitches can be formed simultaneously and the line of stitches adjacent the lower edge of the belt will be of greater length than the one adjacent the upper edge thereof in the above description specific reference has been made to belts adapted for attachment to slacks or skirts in which the lower edge is of larger diameter than the upper edge so as to conform to the body shape of the wearer in the case of shaped belts to be attached for example to bodices in which the upper part must be of a larger diameter than the lower the means for displacing the feed dog 3 must be such that its advancement stroke is shorter than the advancement stroke of the feed dog 5 and the diameter of the roller 8 must.