A method, electromagnetic switch, controller and program product utilize multiple electromagnetic coils that, whenever it is desirable to divert a shoe, are operated in sequence to urge the shoe into a diverting path downstream of the electromagnetic switch. The multiple electromagnetic coils may also be used in combination with a downstream permanent magnet such that energization of the electromagnetic coils appropriately positions the shoe adjacent the permanent magnet such that the permanent magnet can further urge the shoe towards the diverting path.

An article conveying device 4 includes a movable conveyer 12 for conveying a culture vessel 3 (article) and longitudinal mover 13b for moving the movable conveyer 21, and a conveyer driving motor 14 is provided separately from the movable conveyer 12, and a driving magnet MA rotated by a driving shaft 32 driven by the conveyer driving motor 14 and a driven magnet MB provided on the movable conveyer 12 and connected to the driving magnet MA by a magnetic force in a non-contact manner are provided. A plurality of the driven magnets MB is provided along a moving direction of the movable conveyer 12 by the longitudinal mover 13b, and an interval between the plurality of the driven magnets MB is matched with a moving distance of the movable conveyer 12 by the longitudinal mover 13b.

An article conveying device 4 includes a movable conveyer 12 for conveying a culture vessel 3 (article) and longitudinal mover 13b for moving the movable conveyer 21, and a conveyer driving motor 14 is provided separately from the movable conveyer 12, and a driving magnet MA rotated by a driving shaft 32 driven by the conveyer driving motor 14 and a driven magnet MB provided on the movable conveyer 12 and connected to the driving magnet MA by a magnetic force in a non-contact manner are provided. A plurality of the driven magnets MB is provided along a moving direction of the movable conveyer 12 by the longitudinal mover 13b, and an interval between the plurality of the driven magnets MB is matched with a moving distance of the movable conveyer 12 by the longitudinal mover 13b.