Abstract: A machine for producing packets of cigarettes, each packet having a group of cigarettes enclosed in packaging material, has a number of conveyors, each having a respective given number of respective members which are brought into contact with the groups and/or the packaging material, and cooperate with the members of at least one adjacent conveyor; the number of members of each conveyor being equal to a multiple or to a divisor of the number of members of an adjacent conveyor.

Abstract: A unit and method for transferring cigarette portions whereby the cigarette portions are transferred from a manufacturing machine to a filter assembly machine by means of a first conveyor having first seats movable along a first annular path to pick up respective cigarette portions at a pickup point, and by means of a second conveyor having second seats movable along a respective second annular path; the cigarette portions are transferred from a first seat to a second seat at a transfer point along the first path, and the speed of the second seats is corrected at the transfer point to substantially reach or approximate the speed of the first seats at the transfer point.