Abstract: The invention concerns a filtration device comprising a manifold providing fluid connection and mechanical connection comprising a clamping plate movably mounted relative to the manifold and adapted to compress at least one cassette against the manifold, means for driving and guiding the clamping plate comprising a rod extending between the manifold and the plate, an actuator provided with a body and a member moveable relative to the body, which member is adapted to move through a predetermined travel between an extended position and a retracted position, the body being carried by the manifold, and the member carrying the rod and driving the plate via the rod to a clamped position in which the member is in an intermediate retracted position in which it has moved through a shorter travel than the predetermined travel relative to its extended position.

Abstract: A method and apparatus are provided for compression of a lamination stack for a dynamoelectric machine. The apparatus includes a plurality of hanger brackets attached to a face frame, a plurality of force application tubes secured to the brackets, a plurality of force applying rams located beneath the force application tubes, a plurality of pressing plates located beneath the force applying rams, and a plurality of weight distribution plates located beneath the pressing plates. A compressive force is applied to the lamination stack by the force applying rams via the pressing plates and weight distribution plates.

Abstract: In a hot pressing apparatus, a hot-plate pressing cylinder is provided at the center of a moving plate, and a substantially central part of each of the materials to be laminated between hot plates, which are pressed by a fixed plate and a moving plate, is pressed by a hot-plate pressing cylinder of the moving plate. Thus, a uniform pressure can be applied to the materials to be laminated, thereby preventing the occurrence of defects such as wrinkles and bubbles in the products.

Abstract: A hot press apparatus in which workpieces are placed between heating plates in a chamber of a machine bed, so that the workpieces are heated and pressed by moving a movable plate toward a stationary plate to form a laminate, wherein the movable plate is held at its peripheral portions by shaft members and is moved toward the stationary plate by a drive means. A center portion pressing member is provided at the center portion of the movable plate to press substantially the enter portions of the heating plates.

Abstract: In a hot pressing apparatus, a hot-plate pressing cylinder is provided at the center of a moving plate, and a substantially central part of each of the materials to be laminated between hot plates, which are pressed by a fixed plate and a moving plate, is pressed by a hot-plate pressing cylinder of the moving plate. Thus, a uniform pressure can be applied to the materials to be laminated, thereby preventing the occurrence of defects such as wrinkles and bubbles in the products.

Abstract: A self supporting filter plate assembly having two opposed screen sections with inwardly shaped deformations which engage each other to maintain a planar surface of the screen sections at a predetermined spacing. The screen sections releasably engage each other. Inwardly directed retaining pins of an exterior frame removably support the screen sections in place within the frame. Each of the screen sections include edges which are bent at 90.degree. with respect to a central planar portion of each screen. The edge portions of the two screen sections interengage with each other by a projection in an inner surface of an edge portion of one screen section engaging with a recess extending from an outer surface of an edge portion of the other screen section. In addition, spaced openings in the edge portions, on opposed side edges of both screen sections, interengage with the inwardly directed retaining pins extending from an inner surface of opposed sides of the frame.

Abstract: The present invention relates generally to a frameless high pressure press. The high pressure press includes first and second opposed plates that are at least partially surrounded by a wrapping structure. A lift device is positioned on one of the first and second plates at a location offset from the wrapping structure. The press also includes a linkage structure that transfers force generated by the lift device to the wrapping structure such that the wrapping structure forces the plates together. The linkage structure includes a tensioning member connected to the wrapping structure and generally transversely aligned with respect to the plates. The linkage structure also includes a cross member that extends between the lift device and the tensioning mechanism. The length of the tensioning member can be adjusted to control the level of force multiplication generated by the press.

Abstract: A multiple opening panel press is described with a plurality of movable platens which are individually controlled to adjust the spacing between adjacent platens to a predetermined panel width. Position-sensor transducers are employed to produce control signals corresponding to the platen positions which operate control cylinders by associated valves to adjust the platen spacing. The transducers are preferably sonic waveguides which interact with permanent magnets fixed to the movable platens to generate platen position signals which are applied to an automatic control system which includes a computer that produces the control signals.

Abstract: A press with a window type tension frame. The frame has an upper and lower crosshead with two lateral tension shackles connected together to form the window type tension frame. The crossheads and the tension shackles are removably joined together by a clamping system that employs tension bolts.

Abstract: A filter press plate shifter assembly (21) provided with a shifter housing (22) having a tunnel-like center part which passes over the filter plates and housing parts positioned adjacent opposite side rails (14). Each side housing part mounts a pneumatic plate shifter (41) for permitting the endmost plate in the closed stack to be individually and sequentially shifted away from the stack into an open position when discharge of filtrate is desired. The shifter housing mounts a bumping device (61) which cooperates with the endmost plate in the stack to effect vertical bumping thereof relative to the support rails to assist in loosening sticky cake which adheres to the plate. The shifter housing also mounts an air-assist discharge mechanism (62) which includes a nozzle-bearing head assembly (80, 80') which moves vertically downwardly between the opposed faces of an open pair of adjacent plates for discharging airstreams downwardly against the plates to assist in removing the sticky cake from the plates.

Abstract: A filter plate transport device for filter presses has a slide block which can selectively move first and second directions opposite to each other along guide rails by a cable line. The slide block supports a driving pawl which engages behind a pillow block of a from filter plate in a filter plate stack each time the slide block moves in the second direction, and a drop lever is pointed towards the from filter plate each time the slide block moves in the second direction. To increase functional reliability, on the slide block, a control lever is supported which grips under the drop lever and which can be pivoted by the cable line around a horizontal axle between two stops on the slide block. The control lever, reverses the drop lever and driving pawl, which rests on it between a first position during plate transport and an second position during movement in the second direction of the slide block. The driving pawl and the drop lever mesh with a dynamic path of the filter plates when in the second position.

Abstract: In a suspension and guidance mechanism for the filter plates of a filter press, where the dollies (1) that carry filter plates (3), each dolly with two rollers (4, 5) that are staggered with respect to each other in the direction of movement and are positioned on two rails (8, 9), and that move along the rails by a transport device located between the running rollers, the derailment of the dollies is prevented in that, laterally, next to the rollers (5) that move in the direction of transport, there is a guide bar (15) or that these rollers (5) have an enlarged wheel flange (16), whereby the height of the guide bar (15) or of the wheel flange (16) is greater than the lifting movements of the roller (5) away from rail (9), caused by plate adhesion during the acceleration of the dollies.

Abstract: In a chamber filter press (11), two respective filter cloths (13), which enclose a filter plate (12) located therebetween, are fastened on said plate by means of a connecting part (18) and on the underside (19) thereof by means of lashings (14). The filter cloths (13) are free laterally with respect to the filter plates (12) and, when the chamber filter press (11) is open, they can be stretched apart from one another. The upper ends of the filter cloths (13) are provided with eyelets (20). In this arrangement, two adjacent filter cloths (13', 13") are fastened together on a series (21') of springs (21) which, for their part, are suspended on a mobile crossmember (22). The latter is supported on the chamber filter press such that it can be displaced parallel to the charging channel (17) and can move vertically. It is preferably supported on sliding guides or rails (23) which, for their part, may be supported on the chamber filter press (11) such that they can move in the vertical direction.

Abstract: A cake removing apparatus for use in a filter press has mounted on a movable frame of the press a pair of front and rear arms having main and auxiliary fabric beating members, means for pivotally moving the arms, and a a lift mechanism for the arms and the arm moving means. When the filter plates are retracted one by one for opening to remove a cake after filtration, the main and auxiliary fabric beating members are positioned above and at the respective front and rear outer sides of opposed filter fabrics as pulled out approximately to an inverted V shape between two opened adjacent filter plates. The arms are opened and closed at a lowered position, causing the main and auxiliary beating members to directly beat the opposed fabrics on the rear surfaces thereof opposite to their cake adhering surfaces to shake the fabrics.

Abstract: A filter press plate shifter assembly provided with a shifter housing having a center part which passes over the filter plates and housing parts positioned adjacent opposite side rails. The housing parts are rollingly supported on rods which extend along the side rails. One housing part mounts a rotary pneumatic motor and a drive roller which drivingly engages the rod. Each housing part mounts a plate shifter unit having a pneumatic shift cylinder which is provided with relatively fixed and movable plate shifting blades. A pneumatic lift cylinder pivots the shift cylinder upwardly so that the blades project between handles of adjacent filter plates, following which the shift cylinder is energized so that the movable blade engages and shifts the endmost plate toward the open press head.

Abstract: This invention relates to a multistory press (1) whose press frame ( 2 ) is provided with pairs of supports ( 3, 4 ) and pressure transmitting sections (21) that are each integrally formed so as to simplify the assembly thereof and to reduce the manufacturing costs.

Abstract: A filter press plate shifter assembly provided with a shifting housing having a tunnel-like center part which passes over the filter plates and housing parts positioned adjacent opposite side rails. The housing parts are rollingly supported on rods which extend along the side rails. One housing part mounts a rotary pneumatic motor and a drive roller which drivingly engages the rod to control movement of the shifter assembly along the press. Each side housing part mounts a pneumatic plate shifter for permitting the endmost plate in the closed stack to be individually and sequentially shifted away from the stack into an open position when discharge of filtrate is desired. The shifter housing mounts a bumping device which cooperates with the endmost plate in the stack to effect vertical bumping thereof relative to the support rails to assist in loosening sticky cake which adheres to the plate.

Abstract: A chamber filter press for dewatering waste water or product sludges, comprises a press frame with a number of filter plates movably attached at the head bracket and a crosshead that is hydraulically movable for closing the filter plate bundle. The hydraulic cylinder is supported by a replaceable receptacle device in the form of a flange pipe on the end stand of the press frame. Both flanges of the tubular receptacle device are annular flanges, with dimensions matching the flange of the hydraulic cylinder and they have identical through-bores. The flanges are permitted to pass through the hydraulic cylinder and the end stand has on the attachment side a through-hole for the hydraulic cylinder. The receptacle opening has on the opposite side an installation opening through which the back end of the hydraulic cylinder passes.

Abstract: A novel filter bag assembly (10) which may be used in a press (12) for squeezing juice from fruit. The bag assembly facilitates the discharge of a press cake (PC) from within the bag when it is inverted. The bag assembly includes a bag (50) and an inner liner made from a plurality of flaps (64, 65, 66), there being at least two flaps on each of the wide sides (58, 60) of the bag, the flaps being arranged in a tiered fashion so that the lower edge of one flap will overlie the top edge of an adjacent flap. The bag assembly is utilized with a press having a plurality of press racks or plates (14) which are mounted for movement towards and away from each other and also for movement from an upright normal position to an inverted position, each rack carrying first mounting structure (68) on the top edge (14.1) of the rack, the bag assemblies being provided with second mounting structure which cooperate with the first mounting structure so that the bag assemblies may be supported by and between adjacent racks.

Abstract: Molding press apparatus (20) for simultaneously operating a plurality of molds (M) having multiple mold parts (M1, M2) including, a framework (25), first and second platen assemblies (U,L) supported by the framework for carrying the mold parts of the molds, a third platen assembly (I) interposed between the first and second platen assemblies for mounting mating mold parts in opposed relation to the mold parts carried by the first and second platen assemblies, a drive assembly (80) for simultaneously moving the first and second platen assemblies relative to the third platen assembly for opening and closing the molds. Loading and unloading apparatus (150) may be provided for simultaneously transporting preformed fiber reinforcements (R) to the molds and for transporting molded parts (P) away from the molds associated with the platen assemblies.

Abstract: A multi-plate lamination fixture includes at least a first, an intermediate and a bottom plate, of which the intermediate and either the bottom or the top plate each have a keyway therein adjacent one surface thereof and in which the intermediate and the other of the bottom or the top plate have a key projecting past the other surface thereof thereby to permit registered stackability of the plates. The intermediate and either the bottom or the top plate each also have a recess extending into one surface thereof for at least a predetermined distance, while the intermediate and the other of the bottom or the top plate have a pin projecting past the other surface thereof. The projecting pins are received in the recess of the adjacent plates to further assure accurate location of the stacked plates forming the lamination fixture.

Abstract: A device for extending the operable range of a hydraulic cylinder in a filter press is disclosed herein. The filter press includes an overhead beam, first and second end stands connected to respective ends of said beam, a plurality of filter plates movably suspended from said overhead beam between the end stands, and a follower movably mounted and suspended from said overhead beam. The second end stand includes a guide bush and a flange for removably attaching a hydraulic cylinder therein. The device for extending the range of the hydraulic cylinder includes a tube dimensioned to receive the hydraulic cylinder therein, the tube including a shaft at one end thereof receivable in the guide bush, the shaft including a flange extending thereabout to bear against the flange of the guide bush, and a flange extending about the other end of the tube to bear against the flange of the hydraulic cylinder.

Abstract: A filter plate press or an electrolyzer cell has a series of filter plates or cell frames, respectively, which are moved as a stack against a press or cell headpiece by a follower moved by one or more rodded cylinders mounted on a fixed bracket. Scissors mechanisms extending on each side of the press/cell holder and between the bracket and follower assure precise parallel movement of the follower with respect to the headpiece. To accommodate any cumulative errors in the stack dimensions the scissor mechanisms are disengageable upon closure of the press/cell holder so that the follower has freedom to match the abutting surface of the plate/cell frame stack and thus evenly seal the abutting peripheral edges of the plates/cell frames.

Abstract: An apparatus for effecting the separation of filter plates within a filter press is disclosed. The apparatus includes a guide track having mounted thereon a slidably reciprocal carriage. The carriage includes at least one pivoted pawl having an abutment space defined thereon for contacting a filter plate to be transported. The pawl is held in a raised orientation by a resilient spring means. The carriage is driven along the guide track by means of a pressure displaced piston mechanically associated therewith. The piston is housed within a tubular member. Positioned within the tubular member are two pressure chambers, one on each end of the piston. Pressurized fluid is controlledly introduced into one or the other of those chambers to effect a displacement of the piston. The pressure cylinder is of the type generally designated a rodless cylinder.

Abstract: A filter plate press or an electrolyzer cell has a series of filter plates or cell frames, respectively, which are moved as a stack against a press or cell headpiece by a follower moved by one or more rodded cylinders mounted on a fixed bracket. Scissors mechanisms extending on each side of the press/cell holder and between the bracket and follower assure precise parallel movement of the follower with respect to the headpiece. To accommodate any cumulative errors in the stack dimensions the scissor mechanisms are disengageable upon closure of the press/cell holder so that the follower has freedom to match the abutting surface of the plate/cell frame stack and thus evenly seal the abutting peripheral edges of the plates/cell frames.

Abstract: A press which includes first and second crossheads which can be moved toward and away from each other, a plurality of plates between the crossheads, and selective operable sets of stepped supports which are utilized with the plates to vary the distance between adjacent plates to accommodate different heights of material therebetween.

Abstract: An apparatus for effecting the separation of filter plates within a filter press is disclosed. The apparatus includes a guide track having mounted thereon a slidably reciprocal carriage. The carriage includes at least one pivoted pawl having an abutment space defined thereon for contacting a filter plate to be transported. The pawl is held in a raised orientation by a resilient spring means. The carriage is driven along the guide track by means of a pressure displaced piston mechanically associated therewith. The piston is housed within a tubular member. Positioned within the tubular member are two pressure chambers, one on each end of the piston. Pressurized fluid is controlledly introduced into one or the other of those chambers to effect a displacement of the piston. The pressure cylinder is of the type generally designated a rodless cylinder.

Abstract: A desynchronously opened, stacked, multi-parting molding system includes left, center and right molding blocks for defining a left molding cavity between the left and center molding blocks and a right molding cavity between the center and right molding blocks; a positioning mechanism for moving the left, center and right molding blocks along a common axis with respect to each other for desynchronously opening and closing the left and right molding cavities by retracting the first means and for simultaneously clamping both molding cavities in a closed position by protracting the first means, a locking mechanism for locking one molding cavity in a closed position while both molding cavities are clamped in a closed position and for maintaining the one molding cavity in a closed position while the other molding cavity is in an open position; and a clamping mechanism within at least one of the molding blocks that define the closed cavity provides axial clamping force while the first means is retracted to open the

Abstract: An apparatus for effecting separation of filter plates within a filter press, which apparatus includes first and second filter plate engaging pawls pivotally mounted on a carrier which is supported for generally linear back and forth movement longitudinally of the filter press. The pawls have adjacent free ends which define thereon generally opposed abutment surfaces adapted for engaging opposite sides of a filter plate. One pawl is spring urged into a raised position, and this one pawl has an upper camming surface adapted for contact with a bottom surface on the filter plate to urge the first pawl into a lowered position. The other pawl is pivotally mounted in a manner free of springs, and has an upwardly projecting cam lug which defines the respective abutment surface on one side, and a camming surface on the other side.

Abstract: Composite, unbreakable plates for filter-presses are formed by the firm assembly of, in succession for each plate, a first thin frame 1 collecting the filtrates, a grooved resilient membrane 4 to squeeze the cake, a second thin frame 3 forming a chamber for the fluid inflating the membranes, a second similar membrane, and a third thin frame similar to the first frame. The filtration composite plate cooperates with a frame or is a recess plate which is spaced for unloading of the cakes collected. Each plate or frame has a small jack operating between small extensions at the top of the frames or on top of the plates for separating the plates.

Abstract: The invention relates to an apparatus for cake removal in a filter press, and comprises a filter-cloth jolting mechanism as the cake removing means, with individual filter plates interconnected by loose connecting means for separating the filter plates one from another in equally spaced-apart relation. A jolting device for swinging the filter plates as carried by guide rails is connected to the filter plates, so that if the filter plates are caused to swing when they are in spaced-apart condition, lower end portions of adjacent filter plates are caused to strike against each other, such that a jolting effect is thereby given to associated filter cloths so that cakes are removed therefrom.

Abstract: A filter press cloth hanger for a filter press comprising two arms joined at their upper ends by a pivot bolt which extends through platelike members welded to the tops of the arms. Each arm is similar in construction and comprises the hollow tubular outer wall in which slides a spring loaded rod. The rod carries at its lower end outside the arm a latching plate, which has a keyhold aperture, designed to fit over the end of a suspension member for a filter plate. The rod carriers at its free end within the hollow tubular outer wall, a stop member, which is screwed to the end of the rod and prevents the rod from being completely withdrawn from the tube. The stop is also profiled to prevent rotation of the rod within the arm and bears on one end of a compression spring which biases the rod in the arm. The pivot bolt carries a roller, which can run along a support bar, extending the length of the side bar filter press on which the hanger is to be used.

Abstract: The invention relates to an improvement of the construction of filter plates which are mounted on a filter press. The filter plates comprises a frame (1), a flat filtrate drainage guide member (3, 41, 52) disposed in the frame (1), and a supporting member (5, 5d, 40, 48, 53) for movably supporting the filtrate drainage guide member in the frame (1). The filtrate drainage guide member (3, 41, 52) can be prevented from being broken if filtration pressure applied to one face of the filtrate drainage guide member (3, 41, 52) of the filter plate (2) is much different from that applied to the other face of the filtrate drainage guide member (3, 41, 52) because the filtrate drainage guide member (3, 41, 52) is movably provided in the frame (1).

Abstract: An apparatus for effecting the separation of filter plates within a filter press is disclosed. The apparatus includes a guide track having mounted thereon a slidably reciprocal carriage. The carriage includes at least one pivoted pawl having an abutment space defined thereon for contacting a filter plate to be transported. The pawl is held in a raised orientation by a resilient spring means. The carriage is driven along the guide track by means of a pressure displaced piston mechanically associated therewith. The piston is housed within a tubular member. Positioned within the tubular member are two pressure chambers, one on each end of the piston. Pressurized fluid is controlledly introduced into one or the other of those chambers to effect a displacement of the piston. The pressure cylinder is of the type generally designated a rodless cylinder.

Abstract: A membrane filter plate for a filter press with a one-piece, plastic carrier plate, at least one membrane arranged on one side of the carrier plate and provided with spacing bosses for the engagement of a filter cloth and a sealing rim surrounding the carrier plate and the membrane and connecting the same in substantially fluid-tight manner. The sealing surface of the sealing rim parallel to the carrier plate median plane being arranged on the side having the membrane or on either side of the carrier plate. At least one support boss is provided in the central region of the carrier plate. The end face of the support boss parallel to the carrier plate median plane being substantially aligned with the sealing surface of the sealing rim parallel to said median plane and provided laterally with a rotationally symmetrical transition surface facing the membrane which slopes in the direction of the carrier plate median plane.

Abstract: The invention provides a novel filter press comprising a filter chamber wall adapted to be axially displaced for exposing a plurality of filter units contained in the filter press. A certain clearance is provided between the substantially circular filter units and the interior wall surface of the housing or casing, the latter being sealed only adjacent its ends in cooperation with respective end walls. The sealing surfaces are disposed at locations away from the areas coming into contact with the filtering residues on evacuation and cleaning of the filter chamber. A particularly advantageous embodiment of a rotor for a filter press of this type is composed of rotor disks each comprising two axially displaceable rigid pressure plates which are prevented from being rotated by a hub disk interposed therebetween and non-rotatably mounted on the rotor shaft.

Abstract: A horizontal-type filter press having a protective casing that surrounds at least the filter unit, including the support therefore. This protective casing prevents any leakage that might occur from the filter unit during filtration from adversely affecting operating personnel, from contaminating the filter unit, and from attracting insects or other animals. For the opened state of the filter press, the protective casing can be completely removed at least from the region of the filter elements of the filter unit, especially for being able to work on the filter elements, for providing an unobstructed exchange of the filter aids, and/or for the removal of usable or nonusable filter cakes.

Abstract: A filter cloth hanging apparatus for a filter press, including a set of first and second support arms attached pivotally to each side face of each of filter plates, a spring attached to each of the first and second support arms, a set of first and second horizontal rods extending between opposite side faces of each of the filter plates through the springs, and a filter cloth attached, at its opposite ends, to the first and second horizontal rods and brought into contact, at its central portion, with a bottom face of each of the filter plates such that the first and second support arms are pivotally coupled with each other between each pair of adjacent ones of the filter plates.

Abstract: A hydraulic tire curing press comprises a center column and two outer columns respectively located at the apex and ends of a shallow V, and a pair of press cavities each located between the center column and a respective outer column. The press cavities each include a lower cavity part and an upper cavity part, the latter being supported by and between the center column and respective outer column for vertical movement by an in line or shallow V arrangement of actuators which raise and lower the upper cavity parts in order to open and close the press cavities. The center column, when at the front of the press, is used as a common mount for a pair of tire loaders respectively associated with press cavities.

Abstract: A plate filter press includes a number of filter plates slidably suspended on a horizontal upper frame and dogging means mounted on a chain extending above the filter plates to move together with the chain and engageable with the respective filter plates for progressively opening the filter plates so as to be spaced apart from each other. The filter press according to the invention comprises dogged bars engageable with the dogging means and located on the respective filter plates at a level substantially the same as that of slide surfaces of the filter plates slidable on the upper frame, filter plate connecting chains on the filter plates at a level substantially the same as that of the dogged bars, and stoppers on the filter plates at a level above the dogged bars, thereby preventing the filter plates from swinging and tilting.

Abstract: A filter includes a lower filter plate mounted to a frame, an upper filter plate movably mounted above the lower filter plate and filter paper between the two plates. A number of shafts are mounted to the frame below the lower filter plate and extend past opposite sides of the filter. Elongate crank arms and eccentrically positioned tie rod connection pins are secured to the ends of the shafts. The upper ends of the tie rods are mounted to opposite sides of the upper filter plate. The tie rods' lower ends are pivotally mounted to the tie rod connections for eccentric movement about the axes of the shafts. A pneumatic ram is used to rotate one of the shafts through an actuator arm keyed to the shaft. The outer ends of the crank arms on each side are coupled together by connecting bars so the crank arms move in unison. A locking arm is mounted to one of the shafts and is positioned to engage locking recesses in upper and lower locking dogs when the upper filter plate is fully opened and fully closed.

Abstract: In an apparatus for dewatering water-containing materials, endless sieve belts (1,2) are passed over rolls (8) bearingly supported within substantially mutually parallel frames (7, 11) one of which is movable in direction to the other and is additionally shiftable in a substantially parallel relation to the other and thus transversely to the direction of said adjusting movement and can be fixed in its position. For facilitating the coordination of said adjusting movement and said shifting movement, a gate-type guide (10) forming abutments is connected with one frame (7) and has its gate (12) shaped like a U having legs (13, 14) of different length, retaining bolts or, respectively, pins (26) of the other frame (11) engaging said gate (12).

Abstract: A liquid filtering apparatus comprises upper and lower platens and a plurality of intermediate plate members between the platens. When pressed together with a sheet of filter media between each pair of adjacent plates, a fluid-tight chamber for incoming liquid to be filtered is formed on one side of the filter media. When the filter media requires replacement, the upper platen is lifted to separate the plates. Each plate is provided with combined alignment and stop means so that when the plates are again brought together after renewal of the filter media, they will automatically resume their normal stacked position in proper alignment, the stop means also providing a preselected amount of space between adjacent plates to cause a desired amount of compression for a sealing member between the plates. The alignment and stop means is designed to absorb the compression load on the plates, thereby enabling them to be made of lighter metal or plastic materials without overstressing their side walls.

Abstract: The invention relates to a method of closing, compressing and opening filter presses for membrane filters with a stationary upper yoke (7) and a lower yoke (6) movable on vertical press columns (2) and has for its object to improve the service and buildup of such membrane filter presses. This is achieved according to the invention by a method in which a loose lifting tool (10) is fitted under the movable yoke (6) and set in operation, whereby the yokes and the press plates situated therebetween are pressed against each other whereupon the movable yoke (6) is locked in the position taken and, upon opening of the press, is released whereupon the lifting tool is set out of operation and is removed.An apparatus for carrying out the method is characterized in that, between the movable yoke (6) and an abutment (4) there is an interspace (14) in which a lifting tool (10) can be placed and set in operation or out of operation.

Abstract: A plate-type filter press has sidebars carried on fixed frames, and the filter press plates, the queen end and the king end are all supported on the sidebars by means of pins projecting laterally from the plates and the king and queen ends and resting on the bars. The plates and the queen end are able to slide along the bars on their pins, and even the king end is allowed a limited amount of float between stops on the bars. The press is opened and closed by means of double-acting hydraulic piston-and-cylinder units which are mounted on the king end and are coupled to the queen end by longitudinally extending tie rods so as to close the press by pulling the queen end towards the king end.

Abstract: A method and apparatus for securing two ribbed panels of composition board together to form a single panel having two outer flat surfaces. The method comprises positioning panels on opposite sides of a support member and temporarily securing them to same. An adhesive is applied to the edges of the ribs on the panel and the panels secured to the support member are stacked one over the other. One or more alignment members are placed on one of the panels between two of the ribs, another set of panels are coated with adhesive, and placed on top of the panel with the alignment members so that the alignment member is urged between two corresponding ribs of the lower panel of the set on the upper support member such that the alignment member aligns the ribs of the two juxtapositioned panels as the edges of the ribs meet and are glued together.

Abstract: A base having a lengthwise extending opening within which are received a number of slidably mounted plate members each spring urged to spaced apart relationship with an adjacent plate member to enable placement of a nut to be cracked thereon. Inserts for each plate member limit closing movement therebetween to prevent crushing of the nut. A lever imparts closing, nut cracking movement to the plate members. Each plate member is recessed to receive the spring ends and further recessed to receive the movement limiting inserts.

Abstract: The present invention relates to filter apparatus having a filter press charged by a diaphragm pump, a hydraulic closure and an automatic conveying device including a hydraulic plate conveyor device for the filter plates which are displaceable in suspended or upright state. The apparatus employs, instead of a plurality of electromotively driven drive mechanisms including chain drives, a central hydraulic liquid supply for the simultaneous or alternate impacting of the filter press closure, for the hydraulically driven diaphragm pump and the hydraulic plate conveyor device.

Abstract: The invention relates to a filter press construction of the type having a plurality of filter plates suspended from two parallel I beam carriers, the filter plates being provided with a novel supporting arm suspension which prevents undesired swinging. The supporting arms are bent to diverge on both front and back sides of the filter plates, two arms on each side of the vertical center of the plate to provide a novel suspension consisting of two leading bent arms and two lagging bent arms for each filter plate in its operating condition suspended for movement on the I beam carrier. The arms of the filter plates are provided with roller or equivalent sliding elements to facilitate shifting movement on the guiding flange surface of the parallel I beam carriers. This unique leading and lagging supporting arm construction on the I beam carrier eliminates serious swinging problems encountered with conventional filter presses using the parallel I beam carrier suspension for the filter plates.