Abstract: A method for distributing letter-post items, for which the letter-post items are separated and the address information affixed to the items is read, provides that for letter-post items belonging to a predetermined sorting class an identification mechanism is assigned to each letter-post item during the reading of the address information in order to mark the position of the assigned letter-post item in a letter-post item stack and that each identification mechanism is assigned to an element for a predetermined sequence of distribution positions and that the assignment of the identification mechanism to the elements of the sequence for the distribution position is displayed.

Abstract: A device for cleaning the heat-exchanging surface of a storage medium of a regenerative heat exchanger which has a rotatably driven hood. The device utilizes rinsing or cleaning fluid which is discharged from at least one spray nozzle essentially parallel to the planes of the heat-exchanging surfaces. The spray nozzles are movable relative to the storage medium. In order to provide a structurally simple, light-weight cleaning device which can be housed in a space-saving manner, the spray nozzle is disposed at the end of an at least two-part, telescopic nozzle holder which is mounted on the hood of the regenerative heat exchanger and is connected by a supply line with a transfer mechanism disposed in the center of rotation of the hood. The transfer mechanism includes a tubular piece which rotates with the hood, and a stationary housing which is sealed off relative to the tubular piece. The adjustment movement of the movable part of the nozzle holder can be derived from the rotational movement of the hood.

Abstract: A regenerative heat exchanger having a heat-exchanging storage medium which is provided with a plurality of flow channels. At each end there is provided a respective hood, which divides the storage medium via radial sealing members into at least one portion which receives heat-emitting gases, and at least one portion which receives heat-absorbing gases, with said portions, as a result of a continual relative rotation between the storage medium and the hood, alternately receiving the two types of gases. Sealing members are also disposed along the periphery between the hoods and a housing which accommodates the storage medium. In order to simplify the construction, reduce the amount of space required, and to improve the efficiency and avoid periodic down times for cleaning and in particular the leading edges of the storage medium, the radial sealing members are embodied as sealing strips which rest yieldingly directly against the respective planar end face of the storage medium.