PURPOSE: To convey grains on the two grain conveying belts in a reversed direction to each other although the two grain belts are in fact a one endless belt by dexterously employing both the onward/backward ways of the endless belt.

CONSTITUTION: A conveyor apparatus consists of a grain conveying way 1 and 1' which form an upper/lower stages respectively, through which runs an endless chain 4, and the grain is conveyed by means of a grain conveying portion 5 arranged in distance onto the chain 4. On the upper and lower conveyor passageway, a feeding opening 2 and 2' are opening which are connected to a chute from a bucket elevator, and by operating a dumper of the chute, the grain can be conveyed in either direction of a or b, hence making it practicable to convey the grains in two directions by using only one endless belt conveyor.