Abstract: An improvement in a Jacquard-harness of a weaving machine in which the spacing of the heddles for adjusting the width of the material are adjustable. The harness is composed of a plurality of series arranged comber boards each having guide bores therein adapted to receive a harness cord therein. A connection is provided between a pair of such comber boards and consists of rigid, non-bending connecting rods each connected through a pivotal joint. A comber board is secured to a shaft which forms the pivotal joint. A portion of the bores in the comber boards lies on the axis of the shaft which also constitutes the central axis of the comber board. The remaining bores in the comber board are arranged in a mirror image manner symmetrical to the plane connecting the center lines of the comber boards.