Abstract: A rotary conveyor has a supporting shaft rotating about a respective longitudinal axis and having a top attachment end having a radial projection; a bottom platform fitted to the supporting shaft; and a circular top plate having a central opening for fitment to the top attachment end. The circular top plate also has, on its peripheral edge, a number of seats, each for receiving a container to be conveyed resting on the bottom platform. The conveyor also has fastening means for fastening the circular top plate to the supporting shaft. The fastening means include at least one clamp movable between an idle position permitting engagement of the top attachment end by the circular top plate or removal of the circular top plate from the top attachment end of the supporting shaft, and a work position to grip the circular top plate between the radial projection and the clamp. And an actuating member moves the clamp between the work position and the idle position.

Abstract: Containers (2) having a threaded neck (3) and a mouth (4) are capped by a unit (1) appearing as a carousel (5) equipped with capping heads caused to advance along a circular path (P) and capable of axial movement toward and away from the containers in such a way that each one can be fitted with a relative cap (11); each capping head of the unit (1) incorporates a gripper (31) furnished with two jaws (30) presenting relative conical surfaces (26), and respective cylindrical surfaces (27) designed to locate against the neck (3) of the container. When the cylindrical surfaces (27) register against the outer surface of the neck (3), the conical surfaces (32) are positioned with the lower edges (28) encroaching on the area compassed by the mouth (4) in such a way that the cap (11) can be gathered and aligned with the neck (3) of the container (2) before being tightened, thereby ensuring a precise fit.

Abstract: A rotary conveyor has a supporting shaft rotating about a respective longitudinal axis and having a top attachment end having a radial projection; a bottom platform fitted to the supporting shaft; and a circular top plate having a central opening for fitment to the top attachment end. The circular top plate also has, on its peripheral edge, a number of seats, each for receiving a container to be conveyed resting on the bottom platform. The conveyor also has fastening means for fastening the circular top plate to the supporting shaft. The fastening means include at least one clamp movable between an idle position permitting engagement of the top attachment end by the circular top plate or removal of the circular top plate from the top attachment end of the supporting shaft, and a work position to grip the circular top plate between the radial projection and the clamp. And an actuating member moves the clamp between the work position and the idle position.

Abstract: Containers (2) having a threaded neck (3) and a mouth (4) are capped by a unit (1) appearing as a carousel (5) equipped with capping heads caused to advance along a circular path (P) and capable of axial movement toward and away from the containers in such a way that each one can be fitted with a relative cap (11); each capping head of the unit (1) incorporates a gripper (31) furnished with two jaws (30) presenting relative conical surfaces (26), and respective cylindrical surfaces (27) designed to locate against the neck (3) of the container. When the cylindrical surfaces (27) register against the outer surface of the neck (3), the conical surfaces (32) are positioned with the lower edges (28) encroaching on the area compassed by the mouth (4) in such a way that the cap (11) can be gathered and aligned with the neck (3) of the container (2) before being tightened, thereby ensuring a precise fit.