Patent for a new and improved tuck creasing and marking attachment for sewing machines. This design "is to provide a simple and effective tuck creaser or marker to be operated directly by the needle-bar of a sewing machine; and it consists, essentially, of a creaser and an arm attached to the needle-bar and carrying an indent-piece, which strikes the creaser to mark or crimp the tuck. The creaser is formed upon a slide adjustable upon a graduated plate or bar attached to the plate of the sewing machine" (lines 15-24).