Abstract: Disclosed is a method for continuously coating cores by means of a dragée-making apparatus (15) comprising at least one rotatably driven drum (1) in which the product (5) is coated with one or several coating materials or is subjected to other treatment processes, such as spraying, drying. In order to be able to individually treat several small charges within a very limited space and with little effort regarding machines, the charge of the product that is to be processed is divided into small individual charges at the inlet end of the drum, is conveyed through the drum in a clocked manner, and is treated in individual treatment chambers (7, 8, 9, 10, 11, 12, 13) in the drum, which are separated from each other. The longitudinal conveyor (3) that conveys the individual charges through the drum embodies the individual treatment chambers in connection with the inner wall of the drum.

Abstract: A drum rotating about a horizontal axis, designed to coat dragee pellets or other granules with a hardenable substance, has a polygonal--preferably nine-sided--peripheral wall and corresponding frustopyramidal end walls. The peripheral wall consists of angularly adjoining panels and has an access aperture extending partly over two such panels, this aperture being sealable by a gabled flap hinged to the drum at its trailing edge and adapted to be locked in a closed position by a sliding bolt coacting with a latching cylinder and an unlatching cylinder in a certain angular position of the drum whereby the unlatched flap will swing open on leaving that position and will swing closed on reapproaching it.