Abstract: A waste container throw-in system of a building, comprises a container holder for holding a waste container therein, a handcart for carrying the container holder thereon, a vertical conveyor tube vertically provided in the building, a waste throw-in apparatus including a frame structure and miscellaneous actuators, an inserting tube inserted in the vertical conveyor tube and a central control system for controlling the waste throw-in apparatus. When a collector carries the handcart to the waste throw-in apparatus and couples therewith, the container holder is lifted up from the handcart and moved in the horizontal direction toward the vertical conveyor tube with the help of the actuators. Then, the inserting tube is removed from the vertical conveyor tube and instead thereof the container holder is inserted in the vertical conveyor tube, whereby the waste container is thrown into the vertical conveyor tube.

Abstract: In a conveyor system of dust containers for using in a building, particularly an apartment house, dust discarded from respective houses is contained in a cylindrical polysheet, which is clipped at separated points to form dust capsules having a smaller diameter than the inner diameter of a vertical chute so that the capsules in the chute are subjected to air resistance. A pressure detector is provided near the bottom of the chute. In response to the output of the pressure detector the quantity of air escaping to the outside from the upper end of the chute is controlled so that the falling speed of the capsule is adjusted to a safe value.