Grain storage bin construction

Claim 1

In a combination grain loading, unloading and storage device; a container having side walls, a floor, and roof defining a bin, horizontal conveyor means located adjacent the floor and having one end communicating with a point outside the bin and the other end located at a point inside the bin, vertical conveyor means having a lower end communicating with the end of the horizontal conveyor located within the bin, and the upper end of the vertical conveyor located at a point adjacent the roof of the bin, the vertical conveyor including a tube-like cover member coextensive with the conveyor, the cover having a plurality of openings formed through its lower end to provide communication between the lower end of the vertical conveyor and the interior of the bin, rotatable collar means surrounding the lower end of the conveyor and having a plurality of openings which correspond with the openings formed at the lower end of the conveyor, said collar being movable from a position in which the collar openings are aligned with the openings in the lOwer end of the conveyor to a position where said slots are not aligned to selectively permit open or closed communication location between the vertical conveyor and the interior of the bin, means outside the bin for moving the collar from open to closed position or closed to open position, detachable chute means mountable at the upper end of the vertical conveyor to direct and discharge conveyed grain to the exterior of the bin and selectively detachable grainspreading means detachably mounted at the upper end of the vertical conveyor means.