Device for the closing of the upper lateral flaps of parallelepipedal cases having flaps which can be turned over, particularly for very long cases

摘要: A device for closing the upper lateral flaps of long parallelepiped cases includes a pair helical guides with reduced longitudinal length and extension arms controllable so that they may be displaced from an at rest position to operating position. In latter two are arranged as towards inlet force case accomplish engagement helices.