Abstract: A self lubricating industrial vibrator for applications requiring vertical installation. The vibrator comprises a rigid generally cylindrical housing in which an elongated, rotatable shaft is vertically, coaxially received for rotatable displacement by an external conventional motor. Eccentrics secured on opposite ends of the shaft provide vibration, and the shaft is operationally secured for rotation within suitable bearing structure. An oil passageway is thus defined interiorly of the bearing casing, at opposite ends of the internal shaft between upper and lower annular bearing caps. A first lubricating oil reservoir is disposed within the bearing housing in fluid flow communication with a portion of the lower shaft, and the shaft includes an internal, coaxially defined elongated bore which has been internally, spirally grooved.

Abstract: A multiple blast aerator hopper system for handling bulk material. A plurality of blast aerators are fitted at radially spaced-apart intervals about the periphery of the hopper; the first blast aerator is positioned near the bin outlet, and each succeeding aerator is usually vertically elevated thereabove. The blast aerators are periodically fired in a timed, rotary sequence starting with the first, lowermost aerator and continuing serially with higher, radially spaced-apart aerators. Preferably each aerator includes an internal valve seat assembly which houses a resilient, dual diameter piston for axial movement between the sealing position and a rearward, aerator fill position. An external solenoid valve controls each aerator. Preferably the blast discharges of each aerator are directed downwardly, tangentially with respect to the walls of the bin or hopper on which the system is mounted.