Abstract: A process for making dry carbon/polytetrafluoroethylene floc material, particularly useful in the manufacture of fuel cell electrodes, comprises of the steps of floccing a co-suspension of carbon particles and polytetrafluoroethylene particles, filtering excess liquids from the co-suspension, molding pellet shapes from the remaining wet floc solids without using significant pressure during the molding, drying the wet floc pellet shapes within the mold at temperatures no greater than about 150.degree. F., and removing the dry pellets from the mold.

Abstract: A press and method of operation for forming particle board wherein a fiber mat to be compressed is positioned between a pair of peripherally sealed platens through the upper one of which steam is injected when the platens are moved together to compress the fibrous mat and wherein, after a pre-determined time, steam is exhausted from between the two platens and the platens allowed to separate slightly while still compressing the mat to allow steam trapped in the mat to escape slowly before the platens are fully separated.

Abstract: Moulding apparatus including a die, a first hydraulic ram member for opening and closing the die and a second ram member, contained within the first ram member, for injecting mouldable material into the die. The apparatus may be for moulding permanent magnet compacts in which case means may be provided for maintaining a magnetic field around the material in the die.

Abstract: A machine producing moulded components in a compactable material, the components being produced in die cavities in a die plate disposed between a filter assembly and a die cover plate, pressure of the compactable material in the die cavities causing filtration and compaction of the material. The compactable material may be a slurry material containing particles of magnetic material for the production of permanent magnet compacts, in which case means may be provided for producing an induced magnetic field around the die cavities before and during the compaction process.

Abstract: Apparatus for moulding components in compactable materials, including a die plate with die cavities closed by a filter assembly at one side of the die plate, the filter assembly being constituted by a filter block with a grooved or perforated surface and a filter pad in abutment with said grooved or perforated surface. The compactable material may be a slurry material containing magnetic particles for producing permanent magnet compacts, in which case means may be provided for maintaining a magnetic field around the die cavities.

Abstract: An apparatus for pressing liquids from compressible material comprising a feed path leading to a pair of rollers, followed by an expression path bounded by a portion of the periphery of the main roller and a cage spaced from and surrounding said portion, the feed path being constituted by a horizontal shaker gutter with a metering device for controlling the thickness of the layer of material supplied by the gutter, depending upon the power consumption of the rollers.

Abstract: Apparatus for slip forming concrete, having a form, and a hopper for receiving concrete and introducing the same into said form, and incorporating water extraction means, adapted to be positioned in the wet concrete, for extracting water therefrom thereby producing a more stable formed concrete mass, capable of standing on its own after the form has moved on.

Abstract: An apparatus for molding a slurry of calcium silicate crystals comprising: a base plate provided with drain passages on the upper surface; a net conveyor having meshes for dewatering the slurry and disposed on the upper surface of the base plate in contact therewith; a frame-shaped lower mold placed on the net conveyor and immediately above the base plate; an upper mold provided on the low surface thereof with dewatering means for dewatering the slurry and movable into the lower mold to press and dewater the slurry in cooperation with the lower mold and to thereby form a shaped product; drive means for raising and lowering the lower mold; drive means for raising and lowering the upper mold; and lower mold holders movable with the upper mold and also movable upward and downward independently of the upper mold.

Abstract: In a method of heat-pressing sheets of lignocellulosic material the sheets are placed on combined conveying and draining plates externally of a hot press and are charged to and pressed in the press while supported by the plates. Draining of gas or liquid and vapor is effected vertically through the conveying and draining plates at a low temperature. Then the gas or liquid and vapor is drained horizontally through passages arranged in the surfaces of press plates adjacent the sheets.

Abstract: A rotatable carriage for supporting split-type plaster molds for molding ceramic hollowware is disclosed, in which the molds are retained between two frames rotatable to a succession of positions in which the molds are retained in place between the framework of one of said frames and a dual cell inflatable member on the inner face of the other of said frames. The first of said frames includes a retaining member engaging the outer surface of said mold to prevent said mold from slipping relative to said frames. A new casting method is disclosed in which the slip is poured from the filled molds in at least two steps with the rotatable frames being rotated to a different position for each of said pouring steps.

Abstract: A light weight portable device that may be utilized to save soap by subjecting the remnants of bars of soap to compression to reform the remnants into a solid bar of desired configuration, and surplus water associated with the remnants being discharged from the device during the reforming operation. After the remnants have been reformed into a solid bar, the bar may be ejected from the device by a simple manual operation. The device is particularly adapted to being formed in its entirety from a polymerized resin such as polyethylene, polypropyline or the like by conventional molding techniques.

Abstract: A cementitious product slab useful in construction is made by:A. preparing a flowable aqueous cemetitious slurry,B. forming a selected quantity of the slurry into slab shape, said forming step including vibrating said slurry quantity to aid slab shape formation,C. pressurizing the formed slab to squeeze water therefrom, andD. curing the resultant slab.

Abstract: A fiber reinforced composite tube is molded by applying an annular, liquid-resin-impregnated layer of reinforcing fibers to a cylindrical mold or mandrel; placing in contact with the exposed surface of the fiber-resin layer a compression sleeve which is split lengthwise to permit circumferential contraction or expansion of the sleeve into pressurizing relation with the layer; pressurizing the compression sleeve with fluid pressure to compress the fiber-resin layer and thereby compact the reinforcing fibers and expell entrapped air and excess resin from the layer; and curing the resin while the fiber-resin layer is so compressed.

Abstract: A succession of rectangular mats, consisting essentially of asbestos fibers or other filamentary material held together by a wet hydraulic binder such as cement, are conveyed by a series of trays through the gap between a pair of horizontal platens of a press. The upper platen carries a die for trimming the edges of a mat to be compacted, with the tray acting as an anvil. The trays are linked near their leading ends with two parallel, endless conveyor chains and have their trailing ends supported by rollers on rails which parallel the upper and lower runs of the chains and which form ramps for guiding these rollers onto the lower level downstream of the press and onto the upper level upstream of the press whereby each tray runs horizontally through the press between a loading and an unloading station.

Abstract: An apparatus for filling cheese moulds with curd portions issuing from vertical sieve cylinders with a feed for a whey/curd mixture at their top, the cylinders cooperate with the upperside of a table having an aperture. Under the table a conveyor is advancing moulds each consisting of a sleeve with a separate bottom movable in vertical direction by means of a cam surface. At least a part of said cam surface is displaceable for altering the vertical travel of said supporting bottoms so as to change the length of the curd portions.

Abstract: Apparatus for dry forming one or more fibrous layers on a forming surface to provide eventually fiberboard or paper in which the fibers are fed by carrier air to a distributor immediately above the forming surface. The rate of flow of the carrier air and its fiber concentration are adjusted to match the distributor requirements by removal of some of the carrier air in a cyclone separator upstream of the distributor. Any removed fibers are fed back into the remaining carrier air.

Abstract: The specification describes an apparatus and a method for the production of eramic mouldings, in the case of which a suspension of moulding composition particles is introduced into a filling space formed between two punches which can be relatively moved towards each other. The liquid is removed via a filter formed in a punch provided with filter openings. The supply of the suspension is terminated after filling of the filling space with the supply duct shut off. The volume of the system comprising the filling space, the supply duct shut off from the outside and a space with a deformable limiting wall is decreased with a corresponding increase in pressure in this system and then in a conventional manner the final pressure is produced by relative movement of the punches. In the preferred form the filling space is isolated from the remainder of the filling system during the final compaction and forming of the moulding. The invention is preferably applied to the production of magnetized ferrite mouldings.

Abstract: The invention relates to apparatus for producing strudel dough and the like. The apparatus generally comprises rolling apparatus for rolling dough into a flat sheet, a conveyor and stretcher for conveying the dough from the rolling apparatus and stretching it in a direction transverse to the direction in which it is rolled, clamping and conveying apparatus for conveying the dough from the stretching apparatus while maintaining it in its substantially most stretched condition, and apparatus for facilitating the removal of moisture from the flat sheet to preferably reduce its moisture content 80-83%. The moisture removing apparatus may comprise a hot-air blower and/or an absorptive band or the like.