Abstract: The invention relates to a method for treating moist pulverulent material and is particularly useful for removing the moisture from such material. In one aspect of the invention, the material is hot foundry sand, where the sand is first moistened by the addition of water and then the moist sand is treated in a vibrating container under vacuum.

Abstract: A vibratory apparatus for use in association with a vacuum casting apparatus wherein the box containing the sand and casting upon completion of the vacuum casting is moved on track means to a vibrating station where it is lifted off the track, tilted, and vibrated to discharge the sand and separate the sand from the casting.

Abstract: The present invention provides a method and apparatus for conveying very fine material, for example, a material where 100 percent of the material is less than fifty microns in diameter, and 50 percent of the material is less than five microns in diameter. The method utilizes a vibratory conveyor, on the surface of which is formed a bed of relatively large particulate material (50 mesh or larger in diameter, for example), and the very fine particles are introduced onto the bed. Under vibratory conveying motion, the fine material filters into the interstices formed by the larger particles and thus the fine material is conveyed along with the coarser material to a point of delivery. Another aspect of the invention includes the step of separating the fine material from the particulate material and recirculating the latter. Also, the recirculating particulate material may be chilled during recirculation and thus acts as a cooling agent when reintroduced to the conveyor.

Abstract: This apparatus provides a slag handling system wherein slag is transported directly from a cupola furnace to a tank of water. The bottom of the tank slopes upwardly from a lower end to an upper end, and the tank forms part of a vibratory conveyor. The water in the tank is maintained at a level below the upper end of the material-supporting surface of the conveyor so that slag exiting from the cupola is quenched by the water and then conveyed upwardly through and out of the water for discharge from the upper end of the material-carrying surface.

Abstract: This invention relates to a variable speed vibratory conveyor or feeder which comprises a material-carrying member mounted on isolation springs, and an exciter connected to the member by a spring system. The exciter carries a rotatably mounted eccentric weight for imparting vibrations to the material-carrying member, and a hydraulic control system is provided for varying the position of the eccentric weight relative to its axis of rotation in order to vary the amplitude of the vibrations imparted to the material-carrying member.

Abstract: The invention relates to vibratory material handling apparatus and more particularly to a dual exciter system derive for vibrating the apparatus wherein the exciters are positioned on either side of the center of gravity of the apparatus and direct vibrations at obtuse and acute angles, respectively, through the center of gravity of the apparauts, the arrangement being much whereby the vibratory force exerted by each exciter may selectively be varied so as to cause the apparatus to vibrate vertically, or displaced from the vertical, so as to convey in one direction or the opposite direction. The arrangement is such that the spring system connecting the exciters to the material-handling apparatus acts as isolation springs when the vibration generator associated therewith is inoperative, and as tuned natural frequency systems when the vibrator is actuating.

Abstract: A vibratory vertical lift conveyor including a vertically elongated, tubular lift assembly having an inlet at its lower end and an outlet at its upper end. The assembly is provided with generally L-shaped projections extending from end to end within the interior of the assembly to provide for material lifting action when the assembly is vibrating in a vertical direction. Additionally provided is a yieldable connection between the vibrator and the lift assembly to accommodate startup of the conveyor; a mulling sphere within the tubular assembly received therein for limited movement between the projections to mull particulate material passing upward in the assembly; a backflow preventing device at the inlet to preclude backflow of material within the inlet when the vibratory conveyor is moving downwardly; and a manifold and inlet for a treating gas for treating material as it passes upwardly within the assembly.

Abstract: A vibratory apparatus for de-piling or unpiling a mass of particulate material. The apparatus is to be positioned in a recess or opening in a base (presumably the ground) and particulate material piled thereover. Upon being vibrated, the apparatus delivers the material from a pile at a regulated rate into a conveyor system for transport to a place of use.

Abstract: A foundry sand reclaiming apparatus is provided in which lumps of used foundry sand are introduced into a vibrating chamber. The lumps abrade each other to produce discrete particles of reusable foundry sand. As the sand builds up in the chamber, the vibratory action moves the sand to an exit opening from which it is discharged from the vibrating chamber. The vibratory conveying action produced during the sand abrading step may be reversed to cause irreducible particles to move toward and be removed from a discharge outlet.

Abstract: A vibratory fluid bed blender and cooler wherein material such as sand is both blended and cooled by being conveyed by vibratory movement along a bed provided with means for introducing fluid, such as air, in the bottom of the bed to pass through the material thereon and wherein the bed is provided with means for mixing the material thereon to blend it thoroughly.

Abstract: An apparatus for performing work on material through vibration. An elongated material receiving surface is provided along with a mount for the same that permits the surface to be vibrated. A vibrating mechanism including two spaced vibratory force generating devices may be adjustably secured to the material receiving surface in any of a variety of positions with respect to the center of gravity of the latter so that the direction of the vibratory force applied to the material receiving surface may be varied.