Abstract: The device comprises a base featuring a belt upon which a row of containers rests being moved by the belt through the space between two bars until the top part of the edge of the container at the front of the row strikes against the edge of a disc, the outside circular rim of which is divided into sectors, each of which is turned through a predetermined angle on its related radial axis. The disc is made to rotate in direction until the number of sectors having passed the point of contact with the row is the same as the number of containers which are required to compose a package of containers, each package being then sent to a wrapping machine.