Abstract: In order to reduce the sliding friction between an endless conveyor which was up to date constructed as a flexible conveyor belt and the stationary chamber floor of a textile-fiber mixing chamber provided with a pneumatic charging device and an endless conveyor which is moveable over a stationary chamber floor in order to transport the fiber material piled up in the mixing chamber to a blender emptier, the endless conveyor according to the invention is constructed as a conveyor provided with bars which are arranged at intervals and whose ends are fixed to circulating driven endless driving and carrier units.