Abstract: The system for handling a container comprises a vehicle on which the container may bear in the transporting position and which comprises at least one jack for raising or lowering the container by pivoting it about an axis of pivotal connection between the container and the vehicle, and a fixed installation for receiving the container in the position of use, which comprises a device for locking the vehicle, after the vehicle has moved rearwardly. The position of use of the container is an inclined position in which the lower end part of the container is set in position in a frame of the fixed installation. The axis of the pivotal connection between the container and the vehicle is embodied by two articulations, each of which articulations comprises a male element having a surface of revolution about a horizontal axis and connected to the container and a female element connected to the vehicle and comprising a conjugate surface of revolution to which surface of revolution there are connected divergent surfaces.

Abstract: A door for opening and closing the discharge opening of a hopper is carried y a support suspended from an oblique lateral wall of the hopper by two links pivoted to the support at one end and pivoted to the support at the other end of the links. An actuating and locking mechanism for the door is connected to the support. The support has a generally triangular shape and the two pivotal connections between the links and the support are in the vicinity of two of the corners of the triangle. The door is located in the vicinity of the third corner of the triangle.