A device comprising a number of rotatable shelves which are suspended between two shelf carrying members in a manner so as to be kept horizontal during rotation, said shelf carrying members being rotatable in parallel, vertical planes around axes extending spaced apart from each other at the same height above a horizontal plane. Each of the shelves are provided at opposite sides thereof with shelf supports, the axes of which are separated by a distance equal to the distance between the rotational axes of said shelf carrying members, said shelf supports being connected with one and the other of said two shelf carrying members, respectively.