Abstract: A method of casting-masking-molding a thermoplastic resin product, includes the steps of placing a molding sheet 1 on an upper surface of a heated table plate 4, the molding sheet including a molding die 2, and a mask 3 including a plurality of mask constituting pieces 3a, 3b, 3c, ...

Abstract: A plastic molded part having a parting line free O-ring groove formed on a tubular portion of the part is made by molding the groove utilizing cooperating inner and outer axially moveable die portions in which an inner die member is withdrawn from the tubular plastic just before the outer die member is withdrawn, with the withdrawal of the members occurring after the plastic has begun to set but before it has assumed its final cure, whereby the plastic may flex inwardly as the outer die is withdrawn and then may spring back outwardly to its proper position for final cure.

Abstract: A process for making a mineral fiber artificial log that can be used in vented and unvented gas fireplaces, fireplace inserts, and free-standing gas fire room heater to simulate the appearance of a real burning log. The process utilizes a screen mold formed from a pattern that can be made to give the desired exterior configuration and size for the formed log. The screen mold is placed in an outer porous jacket and then in a vacuum chamber. A slurry of the formulation containing mineral wool fibers, a suitable high temperature binder, and water is drawn into the mold while contained in the vacuum chamber, so liquid is drawn through the mold and mineral fibers are trapped in the mold. The log is formed to the size and shape of the mold. Once molded, the log is removed from the mold, dried in an oven, treated with a suitable rigidizing exterior coating, and again oven dried. The log is painted suitably, dried again, and packaged for sale.

Abstract: Containers use in the storing, dispensing, packaging, and/or portioning of food and beverage products. The disposable and nondisposable food and beverage containers are manufactured from aggregates held together by organic binders in order to be lightweight, insulative, inexpensive, and more environmentally compatible than those currently used for storing, dispensing, packaging, or portioning such products. The food and beverage containers of the present invention are particularly useful for dispensing hot and cold food and beverages in the fast food restaurant environment. The structural matrices of the food and beverage containers include a hydrated organic binder paste (formed by mixing the binder with water) in combination with appropriate aggregate materials, such as fibers to add flexibility and strength, glass spheres to make the product more lightweight and insulative, or clay to make the product extremely inexpensive yet strong.

Abstract: A side entry robot for removing molded articles from mold halves of a molding machine of the present invention and an associated process and molding machine are disclosed. The robot for use with the molding machine includes a device for engaging the article; a trolley for supporting and carrying the device for engaging into and out of the mold halves; a mechanism for guiding the trolley from outside the mold halves to a position between mold halves, wherein the mechanism for guiding is stationarily fixed between the mold halves and wherein the mechanism for guiding extends from outside the mold halves to between the mold halves; and a device for moving the trolley along the mechanism for guiding to a position between the mold halves and to a position outside of the mold halves.

Abstract: A process and apparatus for forming a leak proof body and cap. The process including the steps of defining a mold cavity between a first mold part and a second mold part, injecting a molten material into the mold cavity thereby forming from the molten material a body and cap, and retracting the first mold part from the second mold part to separate the first mold part from the body and cap. Thereafter, engaging at least the body with a robotic arm and moving the body with the robotic arm into a capping device while the body and cap are at a temperature at which the material is not fully set. The body is then sealed by moving the cap into engagement with the body to form a leak proof seal.

Abstract: A molded container top 140 has engravings 145 formed by an embossing 108. The core 120 withdrawn from the cavity 102 and a retaining ring 110 holds the hot molded part 140 in the cavity 102. The molded part 140 shrinks away from the cavity 102 and is pushed out of the cavity 102 by an ejector 105. The part 140 has no witness lines on its circumferential skirt 142.

Abstract: This invention provides a plastic molding method, a mold, and a molded article. According to this invention, the supply flow rate of a coolant, e.g., cooling water, to a mold is maintained to shorten the molding cycle and to improve the productivity in continuous molding. The temperature distribution and pressure distribution in the mold are measured, thereby realizing determination as to whether a molded article is defective or not in the molding and cooling processes. The temperatures at respective required portions of the molded article removed from the mold are monitored, so that determination as to whether a molded article is defective or not can be performed, thereby improving the productivity. Countermeasures are taken not to deform the molded article. A thermoplastic resin injected from a hot runner into a cavity is heated at a gate discharge portion by a shearing heat upon injection. Countermeasures are taken to suppress temperature increase caused by this heat.

Abstract: Elongate products are molded in a die from fiber reinforced plastics by drawing a bundle of tows through a bath of resin and between two portions of an open die, which is closed under high pressure, and heated to cure the resin. The die is opened and the product is then partly withdrawn lengthwise, to draw further wetted tows between the die portions, and the die is again closed, clamping the tail end of the already cured product which still projects into the die space, or clamping blocks at its downstream end. Cold clamping blocks also clamp the tows at the die upstream end. The products are subsequently severed externally of the die by cutter wheels.

Abstract: A method for forming a tube coupling body having a throughway open at one end of the body to receive a tube. The throughway has a portion of enlarged internal diameter adjacent said open end to provide a cavity to receive a device for locking a tube in the body and a second portion of equivalent internal diameter to the external diameter of the tube to be received in the coupling body with a close fit. The body is formed from an elastomeric material such that the body can be stripped from the tooling used to form the throughway including said enlarged internal diameter portion by stretching the body over the tooling and by virtue of its elastomeric property, returns to its moulded shape.

Abstract: A mold box is flexibly mounted to a product forming machine having upper and lower vertically displaceable beams. A feed drawer dispenses concrete material into the mold box while a vibration system vertically vibrates the mold box while dampening horizontal vibration. The vibration system is driven by a single drive shaft that actuates first and second vibrator rods while at the same rotating a counter-weight in a counter-rotating direction. A set of alignment brackets lock the mold box into a predetermined aligned relationship while being mounted in the product forming machine. The bottom side of each mold box is mounted to the product forming machine in the same relative position to reduce machine readjustments. A set of telescoping legs hold the feed drawer assembly variable distances above the mold box. A unitized pallet feeder quickly moves pallets one at a time from an "on-deck" position to a "receiving" position underneath the mold box.

Abstract: A process for producing and curing hydraulic material to reduce its hydrophilic characteristics and increase its strength. By preventing water loss and by adding water, efflorescence is controlled and the number of and size of voids created by water evaporation and hydration are reduced. Controlling the cure environment, humidity, temperature and pressure and using fluid barriers and water, control the physical and chemical composition formed during curing. The controls can be used before and/or after the initial set or shape formation of the hydraulic material.

Abstract: Rapid cooling of molded workpieces such as PET parisons formed in an injection molding machine is provided by a receiver receiving molded workpieces upon ejection from the molding machine, the receiver being transported out of the molding machine to an adjacent position where a cooling head coupled to a source of cooling fluid such as liquid nitrogen directs the fluid toward the surfaces of each workpiece. The cooling head engages and is sealed to the receiver to inhibit the escape of cooling fluid into the atmosphere thereby reducing cost, environmental impact, etc. A cooling program control coupled to the cooling fluid source supplies a discontinuous flow cooling fluid from said source to contact the workpieces only when the cooling head is engaged with and sealed to the receiver. A vacuum unit withdraws cooling fluid from the receiver subsequent to contact between the workpieces and the cooling fluid. The cooling fluid can then recooled and recycled for reuse.

Abstract: A method and device are provided for reducing the loss of CVD manufactured parts due to cracking caused by mechanical stresses resulting from the mismatch of the coefficient of thermal expansion between the chemical vapor deposed part and the mandrel plate. The method and device provide a removable mandrel support which is removed after the chemical vapor deposition but prior to the cooling of the CVD part and the mandrel plates. This permits the CVD part to contract upon cooling without mechanical restriction, thus reduce cracking caused by contraction of the CVD part against a mold which does not contract substantially.

Abstract: A method of producing a patterned shaped article includes the steps of disposing at a prescribed position within a main form for molding the shaped article a projection-bristling form having a support member and a plurality of projections standing upright from the support member, charging a prescribed amount of dry pattern-course material for forming the pattern course of the shaped article into spaces defined by a prescribed number of projections of the bristling form, charging a base-course material for forming the base course of the shaped article into the main form including the remaining space of the bristling form not filled with the pattern-course material, removing the bristling form, causing the charged pattern-course material and base-course material to set into a shaped article, removing the shaped article from the main form and, optionally, sintering the shaped article.

Abstract: A method of making plastic molding consists of a boxlike body having an field of multiple fine conical holes. The internal diameter of the fine conical holes gradually decreases from the inner surface of the plastic molding toward the outer surface of the plastic molding, and is in the range 0.1-0.5 mm at the outer surface. The fine conical holes are hardly visible when the outer surface of the box is viewed; ventilation is provided without detriment to the aesthetic appearance of the exterior of the box, and it is not necessary to cover the ventilation holes in the box to keep them out of sight. Conical projection on a male mold are withdrawn before the plastic molding hardens completely and the male mold is separated from a female mold after the plastic material has hardened completely.

Abstract: A method and apparatus for extracting a molded product wherein the molded product, specifically, a shutter molded of a synthetic resin with a very small thickness, from an injection molding die at a high speed without malfunction or deformation of the molded product. The apparatus includes as essential components an opposing pair of chucking members for supplementarily supporting a molded product in the clamped state while restrictively locating it at a predetermined position, and a suction pad located in alignment with the predetermined position of the molded product for grasping the latter by the action of suction. In an alternate embodiment, two chuck arms having respective suction pads at their ends are moved into contact with the shutter from opposite sides. With the invention the molded product can completely be extracted from an injection molding die in cooperation of the chucking members with the suction pad.

Abstract: A process of molding a building panel which includes the steps of combining about 25 pounds of Portland Cement Type I, about 15 pounds of water at around 21.degree. Centigrade, added about 1 ounce of aluminum, calcium, magnesium, and silica, respectively, and about 12 ounces of synthetic fibers with about 0.1 ounce of ferro chloride in 40% solution by volume, and pouring the mixture into the lower portion of a mold to about 1/2 its depth and waiting for approximately 4 hours for the mixture to increase by about 100% of its original volume to fill the mold and thereafter stripping the mold from the form and placing it in a heated environment for curing for a period of approximately 24 hours and thereafter removing the panel from the heated environment.

Abstract: The present invention relates to hydraulically bonded cement compositions and methods of manufacture. Hydraulically bonded cement compositions and methods of manufacture include materials prepared by manipulating under pressure powdered hydraulic cement compositions using known or novel powder packing, casting, or expanding techniques, such that air within the powdered hydraulic cement is successfully removed while the cement is formed into a self-supporting near net final position. Thereafter, the formed hydraulic cement article is hydrated without mechanical mixing of the cement and water.

Abstract: Incorporation of solid removable aggregates into powdered cement which later completely dissolve, evaporate, volatilize, or melt leaving voids in the cement composition is discussed. Cementitious articles are prepared by manipulating powdered hydraulic cement or cement paste compositions into mechanically self-supporting structures of a predetermined configuration and thereafter hydrating the hydraulic cement compositions without mechanical mixing of the cement and water.

Abstract: Rapid cooling of molded workpieces such as PET parisons formed in an injection molding machine is provided by a receiver receiving molded workpieces upon ejection from the molding machine, the receiver being transported out of the molding machine to an adjacent position where a cooling head coupled to a source of cooling fluid such as liquid nitrogen directs the fluid toward the surfaces of each workpiece. The cooling head engages and is sealed to the receiver to inhibit the escape of cooling fluid into the atmosphere thereby reducing cost, environmental impact, etc. A cooling program control coupled to the cooling fluid source supplies a discontinuous flow cooling fluid from said source to contact the workpieces only when the cooling head is engaged with and sealed to the receiver. A vacuum unit withdraws cooling fluid from the receiver subsequent to contact between the workpieces and the cooling fluid. The cooling fluid can then recooled and recycled for reuse.

Abstract: A single wood concrete layer, sound absorption panel is formed as a single wood concrete layer, cast panel body of kaolin mineralized organic fiber chips encased in Portland cement with steel reinforcement. The panels have a noise reduction coefficient of at least about 0.85 for a panel thickness of about 10 cm and a panel density of 86.5 kg/m.sup.2.

Abstract: A patterned tool and method for producing a durable tactile warning surface for sidewalks and other walkways including pouring a concrete base, applying pigmented or colored hardener to the upper surface of the concrete base, stamping the upper surface of the concrete base with the patterned tool including a substantially flat member having a plurality of symmetrically disposed recesses of a predetermined diameter and depth formed on the lower surface thereof and a plurality of corresponding vent channels formed through the substantially flat member in communication with each corresponding recess and curing the concrete base to form a durable tactile warning surface including a plurality of symmetrically disposed raised elements of a predetermined diameter, height and spacing corresponding to the plurality of recesses to produce an uneven surface visually contrasting with adjacent surface areas.

Abstract: A method of environmental cleanup by producing an autoclaved aerated cement building material (termed AAC) by a process that uses the available silica sand and other raw materials in mine tailings, in particular copper mine tailings from porphyry copper mines. The process minimizes the need for processed silica sand and other raw materials, normally used in the production of the AAC building material. The lightweight AAC building material produced from the mine tailings has excellent thermal insulation properties, sound absorption and other desirable construction qualities comparable to AAC building material produced using processed silica sand, i.e. from non-mine tailings raw material sources.

Abstract: A casting method for manufacturing various types of ceramics products having an intricate configuration and a partly diversified wall thickness, such as compressor scroll blade and a screw rotor, by casting a slurry including ceramics, etc. in a mold, includes an arrangement wherein the mold is partly or entirely formed of a flexible gel material which can be melted by heating at a temperature lower than the boiling point of the dispersion medium, whereby the stresses generated when molding the product can be mitigated. Thus, the molding of a product having a high level of dimensional accuracy can be carried out with ease.

Abstract: A method and apparatus for constructing a poured concrete wall in which the concrete is poured into forms provided between a pair of parallel-opposing panels having reinforcing therebetween. The panels are supported on frames which are adapted to be clipped together and which are adapted to be positioned on the foundation by upstanding pins set into the foundation. Window and door openings may be provided in the panels with suitable framing surrounding the same.

Abstract: Rapid cooling of molded workpieces formed in an injection molding machine such as PET parisons is provided by a receiver receiving molded workpieces upon ejection from the molding machine, the receiver being transported out of the molding machine to an adjacent position where a cooling head coupled to a source of cooling fluid such as liquid CO.sub.2 directs the fluid toward the surfaces of each workpiece. The cooling head engages and is sealed to the receiver to inhibit the escape of cooling fluid into the atmosphere thereby reducing cost, environmental impact, etc. A sensor coupled to a control of the cooling fluid source permits the release of cooling fluid from said source to contact the workpieces only when the cooling head is engaged with and sealed to the receiver. A vacuum unit withdraws cooling fluid from the receiver subsequent to contact between the workpieces and the cooling fluid. The cooling fluid is then recooled and recycled for reuse.

Abstract: A process for producing a concrete post having a sleeve that functions as a pouring form during pouring of the posts, a protective shield during shipping and storage thereof, and a strengthening component upon installation. The post is produced in a process whereby multiple, replacable sleeves are provided in a rack which are simultaneously filled from a hopper. The sleeve cavities are substantially free of rebar to facilitate pouring and reduce cost, the sleeve replacing the rebar as the strengthening component.

Abstract: A process for producing lightweight, panel or block-shaped gypsum building materials with a pore structure, in particular wall panels, wherein calcium sulphate alpha-hemihydrate, water in a slightly more than stoichiometric quantity, setting retarders and/or accelerators and additives are mixed to form a pourable suspension and subjected to suitable forming. The ground calcium sulphate alpha-hemihydrate, having a Blaine specific surface area greater than 2000 cm.sup.2 /g, is combined if appropriate, with calcium sulphate beta-hemihydrate in a quantity of up to about 30% by weight relative to the calcium sulphate alpha-hemihydrate, and mixed before forming with a surfactant foam of a defined apparent density in the range from 40 to 80 kg/m.sup.3 and a uniform defined pore size, in a quantity for adjusting the apparent density of the gypsum building material to a defined value in the range from 300 to 1200 kg/m.sup.3.

Abstract: A reconstruction of a heating wall of a coking oven. The reconstruction includes utilization of a novel large size cast refractory repair module which may be utilized to replace existing silica bricks within a coke oven heating wall. The novel large size cast refractory module are monolithic structures formed from a castable refractory material having very high dimensional stability over a wide range of temperatures. Each repair module is a rectangular parallelepiped having one or more vertically extending flues formed therein, one end of a module being adapted to conform to the end shape of the damaged heating wall, the other end of the module being adapted to interfit with existing brickwork. The modules are assembled by initially removing damaged brickwork from the heating wall and then placing in the new modules which are mortared in place.

Abstract: An optical disk having a pair of axially oppositely directed faces and an annular outer periphery is made by first forming a mold cavity corresponding to the shape of the disk between a pair of axially spaced parts and a demolding ring sandwiched between the parts. The cavity is then filled with a hardenable resin such that the parts form the respective faces and an inner periphery of the ring forms the outer periphery of the disk and the resin is at least partially hardened in the cavity. The parts are then axially oppositely separated from each other and from the disk to leave the disk in the ring with both of its faces exposed and the ring is then transversely displaced with the disk engaged in it out from between the mold parts. The disk is then cooled and shrunk such that its outer periphery separates from the inner periphery of the ring and the disk separates from the ring.

Abstract: A method of constructing arcuate cement stairs in a pool includes (a) attaching a first arcuate form having a first form radius to the wall of the pool; (b) attaching a second arcuate form having a second form radius smaller than the first form radius to the wall in a plane above the first arcuate form; (c) attaching to the wall of the pool, inwardly of the first form, a first arcuate support band having a radius generally corresponding to the first form radius, the first band remaining in place when the first form is removed, and attaching to the wall of the pool, inwardly of the second form, a second arcuate support band having a radius generally corresponding to the second form radius, the second band remaining in place when the second form is removed; (d) pouring a curable cement-containing material into the space between the forms and the wall to form stairs; and (e) removing the arcuate forms to provide the stairs.

Abstract: A method for making concrete cored bricks and capping bricks includes providing a mold having a row of mold cavities separated by cross members having core-bar holes formed therein, inserting a core bar through each cavity and into and filling a core-bar hole associated with rear cavity. Next, a rear core-bar hole is plugged and the cavities are filled with a concrete to form plural uncured bricks. The bricks are then compacted and an elongate, interconnecting pattern is pressed into a first surface of each brick. Next, the core bar is removed from the cavities and the bricks are ejected from the mold. Finally, plural wet layers of colored coatings are applied to the first surface of each brick after which the bricks are cured. Antiqued concrete capping brick including a top surface, four side surfaces, and a bottom surface having formed therein at least one recess are also formed. Additionally, a first side surface of the brick includes elongate, interconnected indentations that extend to the edges thereof.

Abstract: A method for injection molding a transaction terminal case with an integral card slot formed by a knife blade in the female mold section which is supported against twisting during the molding process by a plurality of narrow buttress sections in the male mold section. The male mold section also includes a structural element in the form of a larger central buttress which contacts the knife blade of the female mold section cooperatively to form a read head window in one side of the integral card slot during the molding process. The male mold section further includes structural elements for forming a bracket mounting arrangement which is integrally formed adjacent the read head window during the injection molding process.

Abstract: A device for temporary retention of a lifting element on a metal surface of a form during the concrete pouring and setting phases of a prefabricated concrete member includes a part which is designed to form a depression in a concrete section and is equipped with magnets for attachment to a metal surface of a form. The device includes a part having a flat face, a recess terminating at a face opposite the flat face and orthogonal thereto desinged to permit passage with sealing action of a lifting element, and a slot terminating in the flat face. A locking element is mounted in the slot and pivots around an axis transverse to the slot. The locking element has a hook which forms a bolt designed to ensure retention of a free end of the lifting element when the locking element is in an unlocked position in the slot.

Abstract: A thin-walled ferrocement product is formed from mortar supplied in a liquid or semi-liquid state, and a thin foraminous layer of reinforcement positioned centrally between the opposite wall surfaces of the product. The liquid or semi-liquid mortar is deposited in a uniform layer on a conveyor and the reinforcing material is positioned parallel to the lower surface of the conveyor. In a preferred embodiment, the material is maintained under tension at the desired position above the conveyor surface as the mortar is deposited onto the conveyor and flows through the foraminous reinforcing layer. The mortar is developed to a coherent plastic state before removal from the conveyor, preferably with the application of heat. The developed plastic material may be formed into various configurations, or may be maintained flat, while subjected to curing to a solid state. The developed plastic ferrocement material may be separated into convenient lengths for handling.

Abstract: Concrete blocks are formed in a mold having a cavity into which block-forming material is placed. A portion of the material is retained in place relative to the cavity walls when the block is removed from the cavity, and the face of the block forming material adjacent a surface of the material retained in place is provided with a split-type appearance to its surface. A block having a rough surface closely resembling a split surface can thus be attained without the expense and time involved in conventional block splitting. The assembly can be constructed to form blocks having non-planar split-type surfaces. Additionally, split-type surfaces can be formed on an interior surface of a composite block module adapted for splitting along a splitting plane, to attain a block providing a split-type appearance along two spaced planes.

Abstract: A method of constructing a cambered, pre-cast concrete panel and joist assembly comprising creating a mold on a backer surface, positioning reinforcing members, joist attachment plates and weld plates within the mold, pouring wet concrete into the mold, embedding anchor members in the concrete, letting the concrete harden, raising the ends of the concrete panel, attaching cambered joists to the panel and installing said assembly in a construction site. Both the concrete panel and the joists of the concrete panel and joist assembly are cambered. The joists are constructed with or without a top chord.

Abstract: The invention is directed to a process for the production of molded articles by deep-drawing a prefabricated polyurethane(urea) part produced from a polyisocyanate polyaddition product having a specific gravity of at least 0.8 g/cm.sup.3. The part is placed inside a deep-drawing mold and pressed at a temperature of up to 230.degree. C. and a pressure of up to 1,000 bar. After the deep-drawing process, the part is subjected to a dwell time of at least 10 seconds at a temperature of up to 230.degree. C. and a pressure of up to 1,000 and is immediately thereafter removed from the mold.

Abstract: A process for preparing a building block is described. In the first step of the process, an integral, substantially serpentine insert with a density of from about 1 to about 2 pounds per cubic foot is disposed within a mold. Thereafter, a cementitious material is placed in the mold around the insert and then press until the material within the mold has a density of from 80 to 150 pounds per cubic foot. The block thus formed is then removed from the mold and heated at a temperature of from about 75 to about 250 degrees Fahrenheit.

Abstract: A pottery bowl with an integral catch tray. The process of forming the pottery bowl includes molding a bowl with a thickened sidewall adjacent to the bottom thereof. The bowl is then placed on a potter's wheel and a shaping tool is inserted into the thickened portion to form an integral catch tray. The shaping tool for forming the catch tray preferably has a rounded tip from which a stream of water is emitted.

Abstract: A method and an apparatus for injecting a steam into a mold in an injection molding machine by injecting a desired stream toward the opening of the metal mold including a gate and cavities in connection with the opening and closing operation of the metal mold thereby intending the cooling solidification of the molten resin on th gate portion and simultaneously intending removal of dewing and an oily matter on the surface of the metal mold.

Abstract: Apparatus for moulding a thin-walled article, such as a Petri disk, in which the moulding is effected by injecting from the side of a planar portion of the article. The moulding apparatus has a core piece (10) co-operable with a cavity (12) which together define a space (14) in which the article is to be moulded. At least one of the core (10) or the cavity (12) has a moulding surface (16, 18), corresponding to the planar portion of the finished article, which is non-planar. Preferably, the moulding surface (18) of the cavity (12) has a concave curvature, while the opposing surface (16) of the core (10) inserted therein has a convex curvature. The radius of curvature preferably being larger at the core than at the cavity. The particular configuration allows more material to be supplied to the central area corresponding to the planar portion of the finished article.

Abstract: An expansion injection molding die having a plate forming the die cavity, a backup plate, a core plate, ejector pins inserted through the backup plate and the core plate for separating the molded products from the die cavity, and a gas introducing passage communicating with the pressurized gas source for introducing gas into the die cavity. The plate that has holes through which the ejector pins are injected are formed with hollow portions. In each of the hollow portions, a guide ring is installed so that it is freely movable at least two-dimensionally. A sealing member is installed in an expanded hole portion in the guide ring so that it is in sliding contact with the ejector pin.

Abstract: In forming operations on plastic sheets, plates, strips, or tubes (particularly, having highly glossy surfaces) by molding or forming tools, the surface qualities, particularly the gloss, remains undamaged if; (a) the tool is maintained at a temperature in the thermoelastic state region of the plastic until disengagement of the plastic from the tool; and (b) the formed plastic is cooled at its rear side to below the softening temperature, and is disengaged from the forming tool while said tool is hot.

Abstract: A masonry structure is made by setting up a prefabricated wire support structure having the shape of the structure to be made, assembling a first row of bricks on the lowermost horizontal section thereof, masking a plurality of brick of that row with an open top removable mortar molding form which is placed around a plurality of bricks and covering the tops of the bricks by filling the form with mortar and leveling it to provide a mortar filling layer between adjacent bricks of the run and a continuous mortar layer above the bricks.

Abstract: Concrete elements, such as blocks or bricks, are molded or cast by forming in a primary mold cavity a secondary mold made of a portion of a thermoplastic film which has been contacted with a flat heater surface to assure a uniformly heated film portion which is then sucked into the primary mold cavity without wrinkles and filled with concrete mix. The secondary mold with the concrete mix in it is withdrawn, for example, sucked out of the primary mold cavity well before any effective hardening of the concrete mix, so that curing and hardening takes place in the secondary mold outside the primary mold cavity. This early withdrawing is important because it avoids expansion of the curing mix in the primary mold, whereby removal from the primary mold is facilitated. Additionally, the early removal with the aid of the secondary mold assures a more efficient use of the primary molds which are used again while the hardening is still going on in the secondary mold.

Abstract: A process for the manufacture of injection molded articles out of material that is capable of being processed in an injection molding process comprising injection fluid material into a hollow space of a mold of a desired form, hardening or reacting the injected material at raised temperatures and subsequently separating the molded article from the mold at the same high tempeature by the aid of inert gas and/or air, pressed between the molded article and the mold, which is regulated by a self readjusting conical valve.

Abstract: A method of manufacturing bricks with smooth surfaces includes the steps of providing a mould container with a movable bottom, washing the mould container, placing a layer of releasing material in the mould container, filling the mould container with clay and trimming off the container. Only the bottom of the container is filled with a releasing material and the bottom of the container is moved so that it is virtually outside of the mould container.

Abstract: A method of making a concrete block having decorative stones embedded in a surface thereof includes the steps of placing on a face plate a layer of stones which includes a plurality of spaced decorative surface stones and includes filler stones substantially smaller than the surface stones and disposed in the spaces between the surface stones, applying a cement mortar on the surface stones and filler stones, introducing concrete into a separate mold, inverting the face plate and placing it on top of the concrete in the mold, consolidating the concrete and assembling the concrete and the sruface stones by applying pressure and vibration, removing the mold and the face plate, and curing the resulting block without the mold.