US Patent No. 1,490,176, granted April 15, 1924 to Mary T. Mason and Adolph M. Calpini (filed July 24, 1922), for a method of tatting using a needle with an eye, a base thread and a looper tool instead of a shuttle. Thread is taken from a full ball, loops are cast onto the needle and pushed onto the base thread to form rings, arches and picots, with carried threads used for variation. The text describes the steps for a sample pattern and gives five claims. Two drawing sheets illustrate the finished tatting, a construction diagram, and the needle and looper in use.