Abstract: The present invention relates to shedding mechanisms most advantageously used on wide travelling-wave looms. These mechanisms comprise systems of heddle shafts and cams rigidly secured on a drive shaft, imparting to the heddle shafts dephased motion and arranged in groups in a housing so that individual drive sections are formed, additional heddle shafts coupled with the cophasal main heddle shafts being installed therebetween. Such an arrangement enables the loom width to be more fully utilized, wide fabrics to be woven and the width of the fabric produced to be varied.