Abstract: The present feed regulating conveyor bin has a lower conveyor for conveying fibrous materials toward a discharge device including a pair of inclined rows of spiked rollers. A stud link chain conveyor is provided above the lower conveyor in the upper portion of the bin housing. Flexible, smooth surfaced pieces are hinged to each of the stud links. The surface pieces have a width substantially equal to the width of the housing and a length greater than the distances between adjacent stud links of the chain. A platform is provided beneath the upper course of the stud link chain conveyor in the region of an inlet opening on the upper surface of the housing, to support the surface pieces in a horizontal position for receiving and transporting fibrous material.