Abstract: To provide for accurately timed injection of selected lengths of weft threads to shuttles moving, in sequence, in front of injectors (85, 545), a continuously rotating measuring drum (32) has the weft thread (51, 180) passing in front thereof, the weft thread being clamped against the measuring roller by a pressure roller (35) or a selected one of a plurality of pressure rollers (511), the operating mechanism being coupled to and driven by the main drive (21, 22, 23, 24) of the weaving loom so that exact synchronism of movement of the shuttle in front of the injectors is ensured as the thread is being delivered.

Abstract: To provide for positive guidance of shuttles in a multi-system traveling shed weaving loom, in which the shuttles move continuous, endless loop path, having a straight portion (15a) and two essentially semi-circular curved return path portions (15b), the curved return path portions are defined by a pair of guide strips or rails (32, 42) spaced from each other by a sufficient distance to accomodate the shuttles therebetween as they travel in the curved path, the inner guide strip (32) being formed of non-magnetic material. The shuttles carry permanent magnets (36) and travelers (16) carry, on a leaf spring (30), drive elements (25) having permanent magnets (26) interacting with the magnets (36) on the shuttles, the drive elements being pressed against the inner surface of the non-magnetic guide strip in the curved portion (15b) of the path and against a guide reed leaf (10) in the straight portion of the path.