Abstract: A dust control apparatus and method for a bulk material handling transfer system having a chute comprising a pathway there through for handling varying volumes of bulk material flowing through the chute using gravity flow. A self-adjusting air restrictor gate is mounted in the chute for engaging the upper surface of flowing bulk material through the chute for restricting the air pathway during material volume flow variations to reduce dust emissions. The gate member contacts the upper surface of flowing bulk material and moves up and down in response to the flow of bulk material through the chute to restrict the flow of air to reduce dust. A counterweight mechanism and a damper helps maintain controlled contact of the air restrictor gate with the upper surface of bulk material flowing through the chute.

Abstract: A device for eliminating fugitive material dust emanating from material being transferred from an upper conveyor, feeder or crusher to a lower position, or other location. The device allows adjustability of the chute's total flow capacity where increased capacity is required. The device has a sliding gate disposed in the hopper to control the rate of transfer of the material from the hopper. A chute is disposed below the hopper and is movable in both a lateral direction (transverse to the direction of belt travel), and movable in the axis of belt travel. A choke is slidably attached to the chute, and slidable therein. The gate is positioned to maintain a level of material in the hopper to prevent dust from emanating out of the hopper from the chute. The choke is positioned to reduce airflow through the material as it passes through the chute to a lower position.

Abstract: A method for forming a concrete masonry block having external plates. The external plates with anchors are indexed on pallets that are fed into concrete casting machines by proper location of the plates. Concrete mixture is deposited inside of a mold and compressed into the mold with anchors being located in the concrete material and having at least one external plate. Thereafter, the concrete masonry block with the external plate is removed from the mold and cured.

Abstract: The present invention is directed toward a concrete masonry block used to construct masonry walls in a building. The concrete masonry block has an external plate or plates that are anchored through the concrete masonry block. The external plate or plates many cover a small or substantial portion of the external surfaces of the concrete masonry block. The casting machine that casts the concrete masonry block receives the external plate or plates and anchors into the mold prior to casting the concrete masonry block. During casting, concrete is formed around the anchors, but inside the external plates. Thereafter, walls are built using some of the cured concrete masonry blocks with external plates at preselected locations to anchor things to the wall by attaching to the plates. Such masonry blocks are particularly useful in constructing buildings that must be structurally strong, functional, and easy to maintain.