Abstract: A motive assembly for moving a plurality of warp yarns (32) in a loom between upper and lower shed positions, the motive assembly including a plurality of selectively controllable ultrasonic cyclic motors (10), each of which is drivingly connected to one or a group of said warp yarns (32) for moving the warp yarn(s) (32) between upper and lower shed positions.

Abstract: An electronic jacquard including a plurality of elongate heald hooks (1a, 1b) movable longitudinally between upper and lower shed positions and a plurality of electrically operable selection devices (50) for co-operation with the heald hooks (1a, 1b) for selectively retaining the heald hooks (1a, 1b) at one of said shed positions, each selection device including a latch (4a, 4b) movable between a latched position and a non-latched position, the latch (4a, 4b) when at said latched position being capable of latching engagement with the heald hook (1a, 1b) in order to retain it at said shed position, and an ultrasonic cyclic motor (55), preferably a piezo-electric motor, drivingly arranged to move the latch (4a, 4b) from its non-latched position to its latched position.