Abstract: A mechanism for closing the cover of a storage container, such as a container for an assortment of items or parts, includes a stop pin slidably mounted in a guide sleeve for movement into a first position where it engages a support lever attached to the cover and holds the cover in the open position, and a second position where the cover is automatically closed. A spring is arranged to bias the stop pin out of engagement with the support lever when the storage container is removed or displaced from a support surface with the cover being moved by another biasing arrangement into the closed position.