Abstract: A tramp metal separation device for removing contaminants from a stream of raw materials that is being conveyed by a pneumatic conveying line. The tramp metal separation device includes a first housing, a drawer, and at least one actuator. The first housing has an inlet and an outlet that are connectable to the pneumatic conveying line. The drawer is supported with respect to the first housing such that the drawer is moveable between an extended position, where a plurality of magnets are positioned within the first housing and a retracted position, where the magnets are positioned outside of the first housing. A wiper assembly removes contaminants from the magnets as the drawer moves from the extended position to the retracted position. The actuator moves the drawer between its extended position and its retracted position.

Abstract: A tramp metal separation device includes a first housing having an inlet and an outlet, a first drawer and a second drawer. The first drawer and the second drawer each have a plurality of magnets and a wiper assembly, where each drawer is supported with respect to the first housing such that each first drawer is moveable between an extended position and a retracted position. In the extended position, the magnets of the respective drawer are positioned within the first housing and are adapted to be in contact with the stream of raw materials. In the retracted position, the magnets of the respective drawer are positioned outside of the first housing. The wiper assembly of each drawer removes contaminants from the magnets as the respective drawer moves from the extended position to the retracted position.

Abstract: The disclosure includes an apparatus for moving a manhole cover comprising a lever having an engaging end, a linkage connected to the engaging end of the lever, and at least one magnet connected to the linkage and engageable with the manhole cover, wherein the lever provides leverage for moving the manhole cover. The at least one magnet may be selectively engageable with the manhole cover and may further have an interface surface. The at least one magnet may have a handle moveable between an engaged position, wherein a magnetic flux is emitted through the interface surface of the at least one magnet, and a disengaged position, wherein substantially no magnetic flux is emitted through the interface surface of the at least one magnet.

Abstract: An apparatus for moving a manhole cover comprising a lever having a first lever arm pivotally connected to a second lever arm by a hinge for movement between a collapsed position, wherein the first lever arm is substantially parallel to the second lever arm, and a plurality of operative positions, wherein the first lever arm extends at a non-parallel angle with respect to the second lever arm. A linkage is connected to an engaging end of the lever, and at least one magnet is connected to the linkage and engageable with the manhole cover.

Abstract: A pneumatically actuated magnetic workpiece holder comprising a housing having a contact surface for contacting a workpiece to be held, and a magnet assembly translationally disposed in the housing, the magnet assembly comprising a plurality of permanent magnets arranged so that adjacent magnets are of opposite polarities. The housing is adapted for fluid communication with a pneumatic supply. The magnet assembly is biased towards an operative position, according to which the magnet assembly is sufficiently near the contact surface to exert on a workpiece an attractive force sufficient for holding the workpiece in contact with the workpiece holder, and is translationally positionable by pneumatic pressure towards an inoperative position, according to which the magnet assembly is sufficiently distant from the contact surface so as to be unable to exert on the workpiece an attractive force sufficient for holding the workpiece in contact with the workpiece holder.

Abstract: The invention is a magnetic lifting device having a lever-operated cam and roller combination, which facilitates removal of the magnetic lifting device from a workpiece, wherein the cam-mounted roller is free to rotate, eliminating the potential for marring the service of the workpiece when the cam is operated.

Abstract: A cylindrical tube magnet assemblies and their manufacture by the end-rolled capture technique. The assemblies are particularly useful in industrial separators wherein so-called tramp metals are passed through a conduit or hopper provided with a metal separation device comprising a plurality of cylindrical tube magnets typically contained in stainless steel tubes and used in grates, drawers, and stand-alone applications.

Abstract: A pneumatically actuated magnetic workpiece/article holder is for use with a lifting assembly. The article holder comprises a housing having a magnetic assembly translationally mounted within the housing. The magnetic assembly comprises two opposed pole pieces and a permanent magnet centered and mounted between the pole pieces. A pneumatic actuator is mounted on the housing and is operatively connected to the magnetic assembly. The article holder may further comprise brackets for operatively mounting the article holder on the lifting assembly. The magnet may be formed from a rare earth metal having very strong magnetic properties, such as neodymium.

Abstract: A tramp metal separation device adapted to be removably inserted into a housing which directs pelletized raw material to an industrial machine and to separate tramp metal contaminants therefrom. A drawer frame having an outer face plate with a plurality of openings disposed therethrough is adapted to be removably inserted into the housing. A plurality of cylindrical magnets adapted to be inserted through the plurality of openings in the outer face plate are secured to a drawer plate. In one embodiment of the present invention, the at least one silicon-based O-ring disposed in a groove in on of the plates so as to form an air tight seal between the face plate and the magnetic drawer. Additionally, a plurality of silicon-based O-rings may be disposed in grooves on the inner surface of the openings so as to form a wiper mechanism to aid in removing particles from the magnets.

Abstract: A dump pit for grain has a magnet cylinder fixedly mounted therein with its axis extending through an access door opening on the dump pit. A non-magnetic shell is slideably arranged over the magnet and is adapted to be retracted through the door opening so that the tramp metal accumulating on the shell will simply fall off when the shell is retracted.

Abstract: A magnetic separator in the form of a cylindrical duct of circular cross section having opposite end sections and a radially enlarged central section. Within the central section is arranged an axially extending cylindrical magnet assembly. The diameter of the central section is determined in relation to the diameter of the magnet assembly so that the flow rate throughout the duct is generally constant.