US Patent 3,985,160 (12 October 1976), assigned to Barber-Colman Company, describes a flat, thin strip heddle for a machine that weaves triaxial fabrics. The heddle has a nose with a warp guide opening, a cutout and hook-shaped tail for longitudinal shedding movement, and a shoulder along one edge for shifting it weftwise. The scan includes the USPTO database printout (abstract, references cited, claims, description) and the original patent pages with drawings of the heddle and a schematic of the shed forming and heddle shifting mechanism.