An apparatus for filling blocks into containers individually by placing the container as turned upside down over the block and inverting the container with the block fitted therein. A block feeder (11) and a container feeder (13) are arranged as horizontally spaced apart from each other. An intermittenly driven container-inverting slat conveyor (12) has slats (44) each adapted to stop at the block feeder and then at the container feeder while traveling along an upper path of transport of the conveyor. <IMAGE>