US Patent 3,961,648 (granted June 8, 1976) to Soichi Torii of Torii Winding Machine Co., Kyoto, for a positive shedding motion device on a circular loom that weaves tubular plain-weave fabric from tape yarn. A single heald-lifting projection on a rotating cam disc drives pairs of inner and outer heald frames through sliding pieces, guide rods and endless belts. The loom has four shuttles and eight heald sections, and carries 768 warp yarns. The scan includes a USPTO web printout, the original patent front page, seven sheets of mechanical drawings, and the printed specification.

US Patent 3,871,413, granted 18 March 1975 to Soichi Torii of Kyoto, assigned to Torii Winding Machine Co., describes a shuttle arrangement for a circular loom that weaves tubular plain-weave fabric from tape yarn. Several horizontal shuttles are supported by inner guide rings and an outer shuttle race, and are pushed around the circle by powered rollers on a cam disc that also operates the heald frames. The shuttle has a weft placing ring and a tension-regulating device, so the weft is unwound sideways from the package and the tape is not twisted. The document has the abstract, eight sheets of drawings (13 figures), the specification and claims, and a certificate of correction.

US Patent 4,365,651 (granted 28 December 1982 to Soichi Torii, Torii Winding Machine Co., Kyoto) describes a shuttle for a circular loom that weaves tubular fabric. The shuttle has a main body, brackets that hold a bobbin, and a pivoting lever with an inside guide wheel. Inclined outside wheels carry the gravity and centrifugal loads while the shuttle runs along annular guides, and an adjustable connecting lever makes mounting and removal easy. The document contains the abstract, claims, description and eight sheets of patent drawings of the loom and shuttle.