Abstract: A system and method for dewaxing is provided. The system includes a ceramic shell mold having a wall. Water is present within the wall of the ceramic shell mold. A wax pattern assembly is located within the ceramic shell mold. A heat source is configured for heating at least a portion of the wall of the ceramic shell mold in order to convert at least a portion of the water within the wall of the ceramic shell mold into steam for use in melting at least a portion of the wax pattern.

Abstract: A system and method for dewaxing is provided. The system includes a ceramic shell mold having a wall. Water is present within the wall of the ceramic shell mold. A wax pattern assembly is located within the ceramic shell mold. A heat source is configured for heating at least a portion of the wall of the ceramic shell mold in order to convert at least a portion of the water within the wall of the ceramic shell mold into steam for use in melting at least a portion of the wax pattern.

Abstract: A tumbling unit such as a casting shake-out unit, rotary media drum, sand reclaimer or the like includes a cylindrical outer shell and a cylindrical inner liner. The inner liner is formed of a series of interfitting segments. The segments each have an inner surface, an outer surface, side edges, a front edge, a back edge, and two vanes extending from the outer surface. The side edges of the segments have a groove and the grooves of neighboring segments define a channel between the segments. A pin in the channel urges the neighboring segments apart to form a tight interfit among the segments in a row of the liner. The pin conforms in shape and size to the cross section of the vanes, and aligns with the vanes of the adjacent segments to form a continuous spiral upon the outside of the liner.

Abstract: A method and apparatus for the debonding and sand core removal of sand cores from cast parts, the heat treating of metal parts and the removal of organic contamination from metal parts, which is utilizing a fluid bed furnace having an improved fluidizing gas distributor which discharges fluidized gas in a downward direction away from the parts in the fluidized bed.

Abstract: A casting 31 is fixed to a support member 23, and the casting 31 is hit by a hammer 43 while vibrating the support member, so that vibrations of different properties are applied to the casting to shake out the sand.

Abstract: Apparatus for reclaiming sand is provided for removing impurities therefrom. The apparatus includes a vibratory conveyor in which the sand is fluidized and heated. The conveyor vibrates the sand to obtain a more uniform temperature. The apparatus may be used to clean used process sand, such as by pyrolyzing binder from foundry sand, or may be used to remove impurities from virgin sand, thereby minimizing the amount of silica which must be added to the virgin sand.

Abstract: An apparatus for manufacturing herringbone gears with an injection molding process is provided. The apparatus involves the use of two separable mold halves each of which include a mold cavity for molding one half of the gear. Moldable material is injected into the mold halves when they are in a sealing abutting engagement. After the material solidifies, the mold halves are separated and the gear is simultaneously unscrewed from each mold cavity.

Abstract: A method and apparatus are described for the production of piston castings, and, in particular, a die construction and method of use thereof are described, the die having a crown forming part (18) separable from a skirt forming part (12). In the method, when solidification of the casting occurs to an extent at least enabling the separation of the skirt forming die part therefrom to be allowed, and the die parts (20, 22) are separated, the casting is retained by the crown forming part (18) of the die. After a subsequent process step, such as the solidification of the remainder of the piston casting, and or the cooling of the piston casting by an air blast (64), the solidified piston is removed from the crown forming part of the die.

Abstract: A method and an apparatus are provided which allows the safe and inexpensive extinguishing and cooling of flaming wax emanating from an investment casting flash fire dewaxing furnace. Investment mold structures are disposed within individual cups which direct flaming wax material downwardly through individual openings in the furnace floor. Flaming wax is then extinguished within an extinguishing chamber by a stream of non-aqueous inert gas. The process makes flash fire dewaxing of investment mold structures efficient and safe and provides for easy recycling and reuse of the wax because it is not contaminated with water or other contaminant materials.

Abstract: A rotary clamping device is used to clamp an investment casting within a cleaning center to permit cutting and cleaning of the investment from the casting. The clamping device includes a piston and cylinder unit which is advanced to shift a clamping assembly into clamping relation with an investment casting, and is retracted to release the clamping assembly. Hydraulic pressure is used to advance piston rod of the piston and cylinder unit, and pneumatic pressure is used to retract the piston rod. Rotary drive means are connected to the clamping device for selectively rotating the same in clockwise and counterclockwise directions.

Abstract: A foundry sand blowing apparatus for blowing foundry sand into a mold in forming a die such as a core for use in shell mold process or the like comprises a foundry sand storage tank provided with an eject pin. The eject pin is movable between an ejecting position in which it projects outside the storage tank through a sand discharge port provided in the tank to be aligned with the sand blowing port of the mold and a retracted position in which it is retracted from the sand blowing port into the tank. The tank is further provided with an eject pin driving mechanism for moving the eject pin to the ejecting position to eject the product away from the mold and to the retracted position.

Abstract: A casting decoring device to decore metal castings by vibration within an enclosure. The enclosure provides a dust and sound isolation of the casting from the environment with the casting held in an isolation fixture within. A time control circuit is provided to cycle the device according to the size and number of castings within to be treated.

Abstract: Disclosed is a gas hardening type molding machine wherein a vertical type molding box is disposed under a molding sand hopper having an upper part opened and a bottom part provided with a sand discharge port, and a mold cavity in the vertical split type molding box is communicated with both a vacuum device and a hardening gas generator through stop valves, thereby to conduct both the filling of molding sand and the permeation of a hardening gas by utilizing the suction operation of the vacuum device.

Abstract: This invention relates to the formation of a resilient retention rod or pin that inserts intermediate a pair of liner segments of a tumbling or casting shake-out unit, and which rod is formed having a series of inherent angular bends provided along its length, and being constructed of resilient material, so that as the rod is forcefully inserted in place for retaining a pair of adjacent liner segments together, the tendency of the resilient rod to achieve its steady state angularly bent condition has a tendency to continuously force a pressure against adjacent segments to assure their tightness in interfitting together for forming the liner or cylinder for a casting shake-out unit or the like.

Abstract: An explosion treatment apparatus useful for confined shock exposure of materials as for removal of sand cores from finished castings and, in particular, cores in permanent mold castings in which a horizontally axised index device successively presents plural and substantially similar cavities to a position at which sealing, evacuating, fueling and ignition occur. This results in an explosion which occurs upon closure of each chamber. After the confined explosion, the cavity is opened and all cavities are indexed so that the fired cavity can be unloaded, the previously unloaded cavity can be dumped, the next adjacent cavity can be reloaded, and the reloaded cavity is presented to closure.

Abstract: An apparatus for use in a so-called knock-out or shake-out system for foundries comprises a beam which may be resiliently suspended by a stirrup and bellows. A pair of tubular frames depend from the ends of the beam and a pair of rectangular clamp frames are vertically slidable in the tubular frames. A mold box comprising a pair of box-frames and containing a metal casting in a sand mold is located between the two pairs of frames. Two sets of bellows one associated with each clamp frame are inflated to raise the clamp frames and clamp the box between the lower crosspiece of these frames and some other part of the structure such as the lower cross-piece of the tubular frames. The mold is vibrated by vibrators so that the sand and casting are shaken out of the box.

Abstract: A machine for the blast cleaning of castings has a drum with a top opening through which abrasive from overhead abrasive throwing wheels is directed onto castings in the drum. The drum is oscillated about its axis through an angle of about 120.degree. and has two floor parts with an angle somewhat less than this between them. Oscillation of the drum makes for tumbling of the casting resting on the floor. The wall of the drum, in addition to the floor parts, has inwardly sloping parts next to the opening. The wall is made up of bars wedge-joined to support rings, sound being absorbed by rubber strips between them and the rings.

Abstract: Apparatus for transmission of sonic energy to the processing of work wherein the sonic energy is transmitted through a vibratory member to a fixture having spaced abutment surfaces in which the clearance between one abutment surface and the adjacent surface of the work piece, while the work piece is at rest on the other abutment surface, is equal to .+-.50% of the amplitude of the vibrations at the point of attachment of the fixture to the vibration generator.

Abstract: In a rotatable shake-out drum designed to receive refractory moulds containing hot metal castings and to break them up, cooling water is fed to the drum in synchronization with the feeding of moulds to the drum so that the quantity of water fed into the drum varies with the rate of delivery of moulds into the drum.

Abstract: An apparatus for separating castings from moulding sand is provided with a container revolving around the longitudinal horizontal or near horizontal axis. The side surface of the container is provided with suitable slots ensuring an inflow of air into this container. The slots are located at one or several points before a sieve wall located at the end of the container. The sieve wall is used for separation of the moulding sand from the castings. The side surface of such a container can be formed by a coaxial combination of cylindrical and/or conical drums of diameters increasing in steps toward the outlet opening of the container and thus forming annular slots. Air flow is initiated by a pressure difference inside and outside the container this being obtained by exhausting the dusted air and water vapor through casing of outlet opening and covering outlet opening.

Abstract: There is proposed herein a method and apparatus for cooling, drying and separating casting pieces and molding sand and wherein the apparatus includes an opening that extends lengthwise therethrough, the cooling operation being conducted by inducting air in a rotary drum that is contiguous to a first rotary chamber that is in juxtaposition relative to a stationary chamber. The sand is caused to pass through perforated areas within the apparatus while the casting pieces continue through the axial opening in the stationary chamber. A perforated divider wall disposed between the first rotary chamber and the stationary chamber permits passage of sand to a discharge valve and vents air to atmosphere. In a further embodiment of the invention a polygonal sieve is disposed between the rotary chamber and the stationary chamber, said sieve being a truncated pyramid and provided with guide foils.

Abstract: A sound-sealing sand trap for rotary acoustic sand-core shakeouts including bottom-opening, sand-funneling chutes beneath each decoring station and an open-centered tray beneath the sand-funneling chutes. The tray includes a sand-supporting shelf bound on its outer periphery by a sand-level-retaining rim, and on its inner periphery, and edge defining the central opening. Debris entering the tray from the chutes is readily removable through the central opening either manually by the operator or automatically by the plowing action of the chutes through the sand bed.

Abstract: An acoustically enclosed apparatus for shaking out sand-cores from metal castings. A plurality of percussive shakeout stations are spaced around the circumference of a turntable. The stations are separated one from the other and from their surroundings by an acoustical enclosure which rotates with the turntable and within a stationary enclosure. The castings are loaded and unloaded through outwardly facing access openings in the rotatable enclosure as they become registered with an access port in the stationary enclosure. Shaking out is effected while the access openings are out of registry with the access port. The sand collector beneath the stations attenuates the sound emitted from beneath the station.

Abstract: The apparatus comprises one or more blasting cabins through which are conveyed workpiece carriers in the form of grate bars secured only at one end to a conveyor chain. A shifting device transfers workpieces from a first to a second conveyor for a second pass through such cabin. A turning device turns the workpieces over during such transfer. Said device comprises a box which is rotated about a horizontal axis and chutes each workpiece onto the second conveyor.

Abstract: For stripping or peeling electrorefined or otherwise purified metal, which have been deposited on a set of cathode sheets, off the opposite faces of the sheets, these sheets are transported from an electrolytic cell into a rack and are therein held in side-by-side relationship with preassigned spacings therebetween. A plurality of stripper assemblies each comprising a pair of stripper plates normally held in face-to-face relationship with each other are disposed in coplanar relationship to respective cathode sheets within the rack and are moved into and out of the rack. When each stripper assembly is moved into the rack, as by a hydraulic cylinder, its pair of stripper plates slide over the opposite faces of the corresponding one of the cathode sheets thereby peeling off the high-purity metal.

Abstract: A shake-out machine for use with a self-curing mold which includes a body having a bridge-shaped frame and hydraulic cylinder device provided with downwardly directed plungers disposed on top of a ceiling portion of said frame. A mold feeding means arrangement is provided with a wheeled panel serving as a supporting mount for a molding flask during the shake-out operation. The wheeled panel is provided with an opening and is adapted to be run along rails laid on a floor so as to transport the mold under the plungers. A dropped material delivery device, including a wheeled panel capable of running on rails laid on a bottom portion of a pit, is provided with a delivery box mounted on the wheeled panel. The hydraulic cylinder device is equipped with plungers which are operable independently of each other, whereby desired plungers in said hydraulic cylinder device may be lowered by an amount commensurate with the size of a molding flask.

Abstract: Apparatus for molding, for example, a seamless brake drum female mold having a plurality of radially inwardly extending grooves and ridges. The apparatus includes a generally hollow one-piece distensible and flexible hollow male mold having an annular side wall having a plurality of radially extending projections and undercuts and includes an outer core box positioned around the flexible mold and defining an annular cavity with it. The apparatus further comprises a packing mandrel for supporting the hollow flexible mold while mold material is packed around it and a vacuum mandrel to be inserted within the flexible mold to cause the collapse of the flexible mold so that the molded article can be lifted off the flexible mold despite the radially extending projections.