Abstract: The present disclosure provides a device for assisting agitation of liquid. The device includes a frame having a bottom and a sidewall forming an angle with the bottom; a first flexible film attached to the frame at a periphery portion of the first flexible film; a first magnetic field generator at the sidewall of the frame and adjacent to the periphery portion of the first flexible film; and a second magnetic field generator at the bottom of the frame, wherein the first magnetic field generator and the second magnetic field generator are configured to provide a magnetic field parallel to at least a portion of the first flexible film, and wherein a portion of the frame and the first flexible film are configured to be in contact with the solution.

Abstract: Method and apparatus for compacting support particulates media around ceramic shell molds and around fugitive patterns wherein the mold or pattern is placed in a container and the container is filled with support particulates media. The container is set to rotating and vibrating while it is tilted. The combination of rotation and tilting cause voids at the wall of the mold or pattern to be constantly and methodically reoriented so that the free surface of the support media in the voids is moved past its dynamic angle of repose and is caused to flow into those voids by the combined action of the vibration and the constantly changing orientation of the voids relative to the gravity vector.

Abstract: The device, which can be used for filling containers in a lost-foam casting system, includes in a singe operational combination: supporting devices for containers with associated vibration devices to set the containers into vibration; a sand-feeding device, such as a hopper, for feeding dosed quantities of sand into the container; and a positioning device that make it possible to locate foam models into containers and sustaining them both while the sand is being fed into the containers and while the containers are being vibrated, thus avoiding the risks of malpositioning and/or breakage. Preferably, both the sand feeding hopper and model-positioning device on the same equipment capable of moving between a raised position in which the hopper may be loaded with the sand, while the foam models are being transferred by the positioning device, by a robot for example, and a lowered position, in which the models are inserted into the containers, after which the latter can be filled with sand.

Abstract: A vibrating apparatus for vibrating a flask to compact molding sand in the flask, including an elastically supported vibrating table on which a flask is placed and two unbalanced-weight-type motors mounted on the vibrating table at the sides of the flask for vibrating it by rotating the unbalanced weights of the motors. The axes of rotation of both motors are located on a horizontal line that substantially passes the centroid of the entire elastically supported vibrating apparatus, including the vibrating table, the two motors, the flask, and the molding sand in the flask. Further, both unbalanced weights of the motors are rotated at a speed in one direction.

Abstract: A method for compacting molding sand in a molding box in which a model is present, which model is embedded in molding sand. The molding box is vibrated by means of imbalance weights, which are each to be rotated about an axis of rotation during operation. At least four imbalance weights being rotatable about parallel axes of rotation are used, which can be shifted in phase relative to each other.

Abstract: A vibrating apparatus for vibrating a flask to compact molding sand in the flask, including an elastically supported vibrating table on which a flask is placed and two unbalanced-weight-type motors mounted on the vibrating table at the sides of the flask for vibrating it by rotating the unbalanced weights of the motors. The axes of rotation of both motors are located on a horizontal line that substantially passes the centroid of the entire elastically supported vibrating apparatus, including the vibrating table, the two motors, the flask, and the molding sand in the flask. Further, both unbalanced weights of the motors are rotated at a speed in one direction.

Abstract: An automatic vibration molding machine for green sand mold. The green sand of a flask may be compressed and formed by the pressure force of expansion of pressure air-spring means and the vibration force of vibration motor mounted on the vibration head, as well as the vibration which is propagated to a pattern from an upper frame via a lower frame, an ascent and descent cylinder, and an ascent and descent table.

Abstract: The invention concerns a device and method for continuous fabricating of foundry molds from granular material.The device consists of a frame (10) with lights (11) supporting through swivels (31) caissons (30, 40) with large partitions (42) provided with grooves (421) into which pattern-plates (60) are inserted, and with small partitions (43) provided with suction holes (431); the caissons being connected to a vacuum source through flexible hoses controlled by solenoid valves; the whole assembly being placed after heat-forming of a polymer film (92) around a grid (70) with a hollow rib (74) and filter (741) connected to a vacuum source through a connector (75).

Abstract: A cope flask is precisely centered relative to a cope pattern by a flask displacement mechanism affixed to a cope stool which lineraly shifts the flask relative to the pattern while taking up clearance between the locator pins of the cope flask and the locator bushing in the stool. This precision centering is maintained while mold sand is poured into the flask and compacted. The cope mold comprising the flask and the hardened sand is stripped from the stool for subsequent mating with a drag mold made in a similar manner but with the drag stool having locator pins secured in its top surface and the locator bushings provided in the drag flask. As with the cope mold making procedure, the drag flask is precisely centered relative to the drag pattern by linearly moving the drag flask to take up clearance between the centering pins and the centering bushings in the drag with the displacement mechanism.

Abstract: A flask adapted to contain a pattern and sand is resiliently supported in a controlled orientation and vibrational forces are imparted to the flask including a horizontal force component causing generally horizontal oscillating movement of the flask and alternative oppositely directed vertical force components maintaining the flask in a controlled orientation during the generally horizontal oscillating movement thereof. The vertical force components are adapted to counteract rotational inertia of the flask, pattern and sand.

Abstract: The method and apparatus are based on the use of a casting process in which expendable patterns are made of a low density material, then evaporated by molten metal as the metal advances into the cavity created by the evaporation of the pattern material. The outer supporting material of the cavity is an unbonded granular material of sufficient grain size distribution. This unbonded material is vibrated in defined partial volumes of the whole volume of a holding vessel called a pouring container and compacted to a predetermined density around the expendable pattern so that it fills all cavities of the expendable pattern prior to the introduction of molten metal into the container to displace the pattern. The compacting vibration is performed in several independent zones to achieve uniform compaction and to prevent pattern deformation. The pouring container follows a loop via a conveyor system preferably through four operation stations.

Abstract: A method and apparatus are provided for applying multidirectional vibrations to a resilient support. The excentric of the unidirectional vibration generator cooperates with a spherical shaped member mounted for free rotation on the lower face of the vibrating table connected to the base through springs. The unidirectional vibration generator is carried by a plate parallel to the vibrating table and which is rotated about an axis X--X which is perpendicular thereto, under the action of a motor. This rotation of the unidirectional vibration generator ensures the application of multidirectional vibrations to said table.

Abstract: A compaction table control system includes a variable speed vibratory motor having an eccentric weight coupled to a compaction table. The motor is operated according to acceleration of sand in a flask to vary the motor speed and thus the acceleration of the sand.

Abstract: An apparatus for processing particulates comprises a vibratory bed including a motor with a vertically disposed shaft, separate remotely adjustable vibratory generating apparatus mounted on each end portion of the shaft and at least three contact structures between the vibratory bed and a flask or vessel containing the particulates. The uppermost vibratory generating apparatus being remotely adjustable to vary the horizontal vibratory force component and the lowermost vibratory generating apparatus being remotely adjustable to vary the vertical conical force component. The contact structures have conically shaped mating surfaces on pins and in recesses in sockets such that when at least one of the conically shaped surfaces are in contact the vessel is restrained to the same horizontal movement as the bed plate.

Abstract: A variably unbalanced rotating mechanism comprising a frame, a main shaft having a longitudinal axis and supported on the frame for rotation about the longitudinal axis, a drive for rotating the main shaft, first and second eccentric weights mounted for rotation coaxially with the main shaft, and a mechanism for rotating the weights in common with the main shaft and for selectively rotating the weights in opposite directions relative to each other and relative to the main shaft and independently of main shaft rotation.

Abstract: A vibrator for a concrete block molding machine to make molded concrete blocks comprises a vibrating table which receives wooden production pallets with a block mold on support bars and further comprises a vibrating drive. Infinitely adjustable amplitude level and frequency setting of the vibrating table is permitted because the vibrating drive means comprises four unbalanced vibrating shafts disposed especially in pairs beside and above each other. Those of the vibrating shafts which are arranged horizontally beside each other are adapted to be driven in contrary sense at the same number of revolutions by way of universal joint shafts from a regulator and distributor transmission. An hydraulic drive motor attached to the transmission is fed from an hydraulic pump of adjustable delivery volume of the hydraulic unit. Thus the vibrating frequency is adjustable by the rotational drive speed of the two horizontal vibrating shaft pairs (directional oscillators).

Abstract: Vibrating table used particularly in founding, of the type having vibrators fastened to a horizontal plate mounted on a frame and insulated from the base of this frame by elastic damping devices has two rotary vibrators having axes defining unbalance centers in planes (B, B') located parallel to the vertical plane of reference (P) of the plate which passes through its central axis (X), on the one hand, and symmetrically with this central axis, on the other hand.

Abstract: A compaction unit (12) having a frame (14) resiliently mounted to a rigid support (10), the frame rigidly supporting a molding flask (24) therein, and having at least one pair of synchronized motors (A) with eccentric rotors coupled to the frame for vibratory motion therewith. The motor pairs are synchronized in counter rotation so that a given pair produces a net force vector perpendicular to a line joining the motor pair. Preferably, three motor pairs (A, B, C) for driving the frame in three different axis, are controlled by a program which permits sequential specification of the duration and net vector acceleration, over a wide range of values. The motors are maintained in synchronized phase relationship during the changeout of flasks, so that the compaction vectors experienced by each flask begin from the same initial idle condition.

Abstract: The invention relates to an apparatus of the vibrocompactor type for compacting carbonaceous blocks, and which comprises a vibrating table on which a carbonaceous paste is to be disposed, a heavy mass located below the table, and damper means located between the table and the mass for suspending the table above the mass. According to the invention, the damper means comprises inflatable pneumatic cushions. These cushions may be connected in parallel permanently to a source of fluid under a controllable pressure, or alternatively may be connected in parallel during the inflation of the cushions, and then isolated individually or in groups from the source of fluid. The apparatus may also include a means for measuring the pressure in each cushion or in a group of cushions, and a means for signalling the drop in pressure in each cushion or group.

Abstract: A variably unbalanced rotating mechanism comprising a frame, a main shaft having a longitudinal axis and supported on the frame for rotation about the longitudinal axis, a drive for rotating the main shaft, first and second eccentric weights mounted for rotation coaxially with the main shaft, and a mechanism for rotating the weights in common with the main shaft and for selectively rotating the weights in opposite directions relative to each other and relative to the main shaft and independently of main shaft rotation.

Abstract: According to the invention, a sand distribution structure is interposed between a sand supply hopper and a flask having an associated pattern. The sand distribution structure comprises juxtaposed, apertured plates, which are adjustable relative to each other to variably register the apertures in the separate plates. It is possible with variations in the dimensions and locations of the apertures in the plates to choose a desired flow rate and/or selectively disperse the sand over the pattern.

Abstract: A molding apparatus comprising a rigid mold flask adapted to contain a mold pattern and sand, and when containing sand, having a combined center of gravity, a support for resiliently supporting the mold flask for horizontal movement only of the mold flask as a whole body, and a vibrator for shaking the mold flask to provide horizontal vibrational forces directed in a horizontal plane extending approximately through the combined center of gravity.

Abstract: A mold pattern is held in position in a mold flask in an unconnected relation to the mold flask. Sand is supplied to the mold flask to surround the mold pattern while the mold flask is vibrated to compact the sand around the mold pattern.

Abstract: An automatic no-bake core and mold-making machine. A frame is rotatably mounted on a base and carries a plurality of core-forming patterns around its periphery. Plates surround the patterns to form a continuous, flat surface interrupted only by the pattern cavity. A mixing machine located adjacent to the rotating frame continuously pours sand and binder on the patterns and surrounding plates. A stationary plow under which the plates and patterns pass continuously wipes excess sand and binder into the next succeeding pattern passing below the plow. Means are provided for ejecting the cores from the patterns after they are cured.

Abstract: A support table for foundry sand molding machines is elevated from a lowermost position to a sand supply position wherein sand is fed into a flask supported on the table. The table is then moved downwardly to a predetermined position slightly above the lowermost position while being vibrated to compact the sand. The table is then elevated to an upper position for squeezing the sand against a squeeze board carried by a head on the machine.

Abstract: A machine for producing sand molds by a single operator, wherein the flask assembly, including the cope, drag and matchplate remain in the machine at all times, and the method utilized therein.

Abstract: A contact adhesive that is a polymeric material with a major proportion of a tackifier is applied to sand in making a foundry mold. No curing step for the adhesive is required but instead pressure is applied to get the desired bonding together of the sand granules.