Abstract: A method and apparatus are used to transfer workpieces, in particular preforms or bottles. The workpiece is subjected to pressure by a gripper-like holding device, which has at least one gripper arm arranged pivotably relative to a gripper carrier. The gripper arm is pivoted in order to perform gripping and releasing movements. The pivoting motion of the gripper arm is controlled by at least one magnet, particularly a permanent magnet.

Abstract: The method and the device are used to blow mould containers. A parison is transformed into the container after thermal conditioning within a blow mould of a blow moulding machine by the action of blowing pressure. In order to adjust to a contour of the container to be produced, prior to the moulding of the container, at least a part of a first blow mould is first removed from the blow station and replaced by at least a part of a second blow mould. Betbre the part of the first blow mould is removed, a locking device which fixes this part in the blow station is released and after the insertion of the part of the second blow mould said locking device is again positioned for fixing the part of the second blow mould. Each locking device is coupled to an operating element.

Abstract: The method and the apparatus are used to transfer work-pieces, in particular preforms or bottles (2). The workpiece is subjected to pressure by a gripper-like holding device (41), which has at least one gripper arm (45, 46) arranged pivotably relative to a gripper carrier (42). The gripper arm is pivoted in order to perform gripping and releasing movements. The pivoting motion of the gripper arm is controlled by at least one magnet (68, 69), particularly a permanent magnet.