Tipping of loose material from a container is considered, with which there is a uniform tipping stream, lump flight, an increased lump flight, and incomplete material tipping. The maximum lift of the spiral guide, with which there is unhindered passage of containers over the unloading section, is determined. The dependence of the length of the open unloading section on container movement rate, rotation angle at the instant of flight of the last particles within them, and on particle acceleration and angular velocity, are determined.