Abstract: In particular in the food industry it is needed to provide a regular stream of in themselves irregular pieces, e.g. for weighing and packing, from a store of partly congealed deep frozen food. According to the invention the randomly discharged pieces from the store are delivered to the central area of a revolving table, immediately above which there is disposed an essentially stationary spiral-shaped body which due to the rotation of the table conducts the pieces outwards, thereby increasing their mutual distance, in order for them to be discharged in a single file to a conveyor. The spiral-shaped body is supported and driven to perform a horizontal shaking movement whereby disintegrating congealed lumps of food, so that their constituent parts may equally be distributed evenly along the spiral track.