A transfer device for transferring an apparatus from one support to another support. The transfer device is comprised of a housing and two movable clamping elements that are mounted to the housing. Each of the clamping elements is movable between a support-clamping position and a non-clamping, release position. An actuator is in operative engagement with the two clamping elements to move each of the clamping elements between the support-clamping position and the release position. The actuator has a first actuator position wherein one of the clamping elements is in the support-clamping position and another of the clamping elements is in the release position. In a second position, one of the clamping elements is in the release position and the other of the clamping elements is in the support-clamping position.