PURPOSE: To enable one of two conveyor belts to be driven simply by driving of the other belt and to effectively prevent subjects to be conveyed from dropping from both sides of the conveyor belts.

CONSTITUTION: A conveyor comprises a first and second conveyor belt 1, 2 which are brought close to each other with their running faces opposite each other and are so disposed that their direction of travel is upright or steeply sloping. A first face fastener 1a is provided on both edge sides of the running face of the first conveyor belt 1 and a second face fastener 2a is provided on both edge sides of the running face of the second conveyor belt 2, and the face fasteners 1a, 2a are engaged with each other on the respective opposite faces of both conveyor belts 1, 2.