Abstract: An apparatus for closing bottles by means of closure caps, such as, crown caps or the like, including a closing machine, a closing member rotating together with a bell-type centering or guard member along the periphery of the closing machine. A spring-biased pressure die is mounted in the closing member so as to be movable in axial direction. A cap transfer station is arranged at one point of the cycle of rotation of the closing machine. The position of the centering member with a cap support member is adjustable relative to the pressure die during the movement. The centering member and cap support member, when in the cap transfer position, are fixedly supported on the closing member by means of the pressure die and/or by means of control members of the centering member.