Abstract: A bulk storage vessel of generally cylindrical upstanding shape is formed with a plurality of wall segments which are assembled together in end to end relation to form subassemblies of circular shape. These subassemblies are then flange interconnected along upper and lower edges to provide a cylindrical vessel. Each of the wall segments includes a curved side wall of generally rectangular shape having roll formed flange structures along both its upper and lower edges and a vertical end flange at one end. The upper edge flange structures include an outwardly extending horizontal flange section and a downturned vertical flange section integrally rolled therewith. Along the lower edge, the flange structure includes an outwardly extending horizontal flange section, a downturned vertical flange section and an inwardly extending flange section joined to the lower edge of the downturned vertical flange and deflectable for interlocking engagement with the upper edge flange structure of an adjacent lower subassembly.

Abstract: An overhead silo filling device for uniformly distributing ensilage and particulate materials in substantially symmetrical concentric fashion around a central axis of silos and the like comprises a hollow chamber with a discharge outlet at the lower end and adapted to be centered above the surface of the material in the silo. The chamber is supported in an opening in the silo roof structure and includes an upper section, an inwardly and downwardly sloping frusto-conical intermediate section and a lower discharge section which forms the discharge outlet for dispensing silage at the lower end. A material inlet conduit is secured to the upper section of the chamber for directing an inflow of material against an inside wall surface, and the inlet conduit slopes upwardly away from the upper section so that the material is directed downwardly into the chamber to form a downwardly spiralling path inside the chamber wall moving toward the discharge outlet.