Abstract: A vibratory feeder for feeding low density powered material having a tray, a base and a motor supporting the tray on the base. The motor includes an electromagnet having an AC coil supported on an intermediate leg between the outer legs and an armature having a permanent magnet and two pole plates. The pole plates being disposed in the spaces between the outer legs and the intermediate leg. A rare earth magnet is supported between the pole plates. Spaces between the electromagnet legs and the pole plates providing for a stroke of about 0.2 inch at a frequency of 30 Hertz and a tuning spring connecting the motor to the tray. The tuning spring being adjustable to change the deflection of the tray relative to the motor.

Abstract: A wire wound drum using a magnetic element having a non-magnetic shell and a matrix material bonded to the shell and made up of a non-magnetic wire and a magnetic wire wound on the shell in bobbin fashion single layer alternate magnetic and non-magnetic wires having the outer diameter of the wire machined down to the center line of the wire wrap to produce a flat surface.

Abstract: A magnetic separator made up of a drum bearing a plurality of stacked spaced rings each having a U-shaped cross section in the form of an arc outwardly facing channels. An upper set of magnets and a lower set of magnets supported on the separator frame and extending into the channels and matrix module are supported on the rings in spaces between the rings. A mixture of magnetic and non-magnetic material is fed onto the matrix modules and first upper nozzles spray water on the matrix modules as the matrix modules pass between the upper magnets thereby flushing non-magnetic material. The second upper nozzles spray water on the matrix modules as the modules move away from the upper magnets so that magnetic material is flushed from the matrix modules and falls into the non-magnetic hopper.

Abstract: A magnetic rotor for use with an eddy current separator. The rotor has a plurality of permanent magnets bonded to a polygonal outer periphery and undercuts are formed in the flat surfaces to relieve stresses due to differences in thermal co-efficient of expansion of the permanent magnets and the rotor structure. A carbon filament is wrapped around the permanent magnets under tension overcome the centrifugal force due to rotation of the rotor. The rotor is supported on a bearing sleeve that surrounds the rotor shaft with rotor bearings which support the rotor on the sleeve and the sleeve extends inwardly over the rotor shaft and the shell has shell bearings supported on the sleeve extension. Therefore, the sleeve supports the rotor independent of the shell so that the bearing of the shell and the bearing supporting the rotor are each independent of one another. The sleeve is supported on pillow blocks. The ends of the rotor are clamped to the rotor shaft by means of a locking assembly arrangement.

Abstract: A self-cleaning grate magnet made up of an enclosure having a discharge duct adjacent a product duct separated by a partition and a magnet tube frame having magnetic tubes fixed thereto. The magnetic tubes extend through first holes in the enclosure, the discharge duct and through second larger holes in the partition and into the product duct where the magnetic tubes collect ferrous material on their surface. Wiper bushings are slidably received on the magnetic tubes and disposed in the discharge duct. The wiper bushings are too large to pass through the second holes in the enclosure in the partition. The holes in the partition between the discharge duct and the product duct are substantially larger than the magnetic tubes so that ferrous material is carried by the magnetic tubes into the discharge duct. The wiper bushings are stopped by the discharge duct walls and wipe the ferrous material from the magnetic tubes as the magnetic tubes are pulled through the product duct.

Abstract: A magnetic trap made up of a hollow, generally cylindrical body, having an open top, an inlet and an outlet for connecting to a flow line for liquid containing entrained removable magnetic material. There is a removable cover for the hollow body, a plate is supported on the cover, and elongated, spaced non-magnetic tubes are fixed to the cover. Elongated stacks of permanent magnets are attached to the plate and extend through the cover into the tubes. When magnetic material held to the tubes by the magnets is to be removed, the cover can be removed from the body, the magnetic stacks can be pulled out of the non-magnetic tubes with the plate, thereby removing the magnetic fields from the tubes so that the magnetic material held to the tubes falls off of the tubes, thereby cleaning the tubes.

Abstract: A three mass vibratory conveyor including a base with an electromagnet, a tray supported on the base and a tuning weight. A first spring connecting the tray to the base, a second spring connecting the base to the tuning weight and a resilient support supporting the base to a support member. The mass of the tuning weight being adjustable to provide a system in which the base and tray are driven by the driver at a predetermined frequency and no relative motion takes place between the base and the tray.

Abstract: A vibratory feeder having a tray with a conveying surface and springs. The springs are each made up of flat plate like first leaves and flat plate like second leaves rigidly attached together. One part of each spring is connected to the tray and the other part is connected to the base. The longitudinal axis of the leaves extend perpendicular to the longitudinal axis of the tray. The springs are spaced from each other whereby the tray is vibrated in an arcuate path relative to the base to vibrate the tray for moving material on the tray.

Abstract: A high gradient magnet is disclosed having a coil of superconducting material immersed in liquid helium in a toroidal shaped liquid helium vessel, supported in axial spaced concentric relation to a toroidal shaped liquid nitrogen vessel which forms one end of a toroidal heat shield made of high heat conductive material in which the liquid helium chamber is supported by a first coil support ring and a second coil support ring. The heat shield and liquid helium chamber are in turn supported in a toroidal shaped vacuum chamber which is in turn supported in a heavy iron cylindrical enclosure closed at the ends and having an opening through the center of its ends. A slurry containing iron particles may pass through the opening in the center whereby the iron particles from the slurry are retained by a matrix. The first coil support ring has two ends supported on the vacuum vessel and an intermediate part.

Abstract: A Precipitator Rapper is disclosed having a non-magnetic tube adjustably attached to a solenoid and a hammer extending through the solenoid and through the tube. The solenoid is adjustable toward and away from the precipitator and the tube has a removal cap on the end remote from the precipitator that can be removed so that an accurate measurement can be made from the hammer to the outer end of the tube. This enables a person to accurately adjust the hammer relative to the tube.