Abstract: In a unit by which groups of cigarettes are packed in rigid type packets, the single packet is fashioned from a flat diecut blank folded around the group. An assembly consisting of one blank and one group is directed along a predetermined path and conveyed ultimately into a folding station with the blank still presenting two lateral flaps to be bent over and flattened; the station comprises two folders each presenting a fixed shoe of helical geometry around which a belt is looped slidably and positioned to engage a respective lateral flap as the assembly advances along the relative folding path, the active branch of the loop running in a direction concurrent with that of the advancing assemblies.

Abstract: In a machine (1) for the manufacture of packets substantially parallelepiped in shape, typically containing cigarettes, the packets (4) advance in succession on a conveyor belt (P) toward an affixing station (7), where a revenue stamp (8) and a detachable coupon (3) are attached simultaneously to each one in turn by a single applicator device (2).

Abstract: This invention relates to a bleed valve of a compressor, in particular a compressor of a bypass aero-engine, with a guiding device provided downstream of a valve body in the bleed duct, said guiding device directing the bleed airflow from a compressor duct to a bypass duct in such a manner that the direction of the flow of the bleed airflow is imparted with a component which is unidirectional with the airflow carried in the bypass duct. The present invention provides a dissipation screen in the bleed duct between the valve body and the guiding device to reduce the energy contained in the bleed airflow, thereby decreasing the loading of the bypass duct. Moreover, the present invention provides for an attenuation chamber downstream of the dissipation screen as viewed in the direction of the bleed airflow.