directly adjacent and movable bar 4 viewed in machine direction m arrow the single filler piece 29 is arranged on a movable bar 4 on the left and on the following movable filler bar 4 on the right so that u2014 viewed from the center of wire section 28 u2014 always the same width x on movable bars 4 is used this results in the already discussed advantages in addition bar arrangement 1 illustrated in fig2 a 2 b 3 4 and 5 and wire section 28 illustrated in fig6 are ideally suited for use in a machine for the production of a fibrous web especially a paper cardboard or tissue web as already explained the illustrated actuation device 5 can be a tube 5 1 in all design forms filled with a liquid or gaseous medium 11 a pneumatic or hydraulic cylinder a v drive an eccentric or another similar lifting element in general movable bar 4 may be a forming bar or dewatering bar 8 an oil scraper bar or a scraper in contrast element 6 may be a forming wire 6 1 in a wire section for a machine for the production of a fibrous web a press roll.