US Patent 4,509,562, granted April 9, 1985 to Johann Schönberger and co-inventors, assigned to Chemiefaser Lenzing AG (Austria). It describes a circular loom with an improved shuttle drive in which the catch roller on the rotor contacts a running roller at the shuttle's front end, so the shuttle is pulled rather than pushed and is not forced out of the running races. The scan includes a USPTO database printout (abstract, claims, description) and the original patent pages with two sheets of drawings (Figs. 1-4), a description of the harness and shed formation, and two claims.