A 1927 German-language technical article by Robert Glafey on spinnerets (Spinndüsen) used in rayon (artificial silk) spinning. It distinguishes single nozzles from group nozzles (spinning showers), describes designs meant to improve coagulation and heat exchange, orifice sizes and shapes, and the materials used (glass, platinum, nickel, porcelain, gemstones). It also covers how orifices are made and how nozzle plates are mounted in nozzle heads, with twelve figures; the text ends with "to be continued".