Abstract: A modular mold assembly according to the present invention provides a modular exposed surface, which provides a layup surface which receives uncured prepreg composite material layers. In one orientation, the mold portions are mountable to each other and to a mold base such that the exposed surfaces define a continuos substantially U-shaped layup surface. In another assembly orientation secondary engagement surface are mated such that a substantially curved layup is formed from the exposed surface. In yet another mold assembly orientation, a mold support surface is mounted to a subset of the mold portions such that another layup surface is formed for composite components which require an extended portion. Guide outlines are provided within the exposed surface in predetermined areas as locators for a plurality of composite material layers which form a panel which is smaller than the exposed surface.

Abstract: A mold assembly for forming an ophthalmic lens article includes a first mold and a second mold. The first and second molds are assembled together to define a mold cavity therebetween having a profile corresponding to that of the ophthalmic lens article to be formed. The mold cavity is filled with a polymeric material which is polymerized to form the ophthalmic lens article. At least one of the first and second molds is a resin mold which is formed from a resin material, and a portion of at least a molding surface of the resin mold is directly irradiated with UV radiation so as to provide a UV-treated surface. The ophthalmic lens article formed in the mold cavity is held on the resin mold such that the ophthalmic lens article adheres to the UV-treated surface upon separating the first and second molds away from one another.

Abstract: A food mould made of flexible materials, such as for example silicone material, featuring an edge modified in such a way as to permit the insertion of a support of different height in order to make the mould non-deformable and stable when gripped, is described. The support to be inserted in the mould has the same shape as the mould itself and its dimensions are such as to permit insertion of the same in the appropriately modified edge of the mould.

Abstract: A building block for erecting walls, houses or other buildings is provided. The block is made of a special mineral mixture and has at least two relatively parallel channel type hollow spaces passing therethrough. The hollow spaces of the building block are defined by can shaped metal or synthetic plastics profiles. Also a mold with longitudinal and face walls is provided, in particular for producing such a building block. The mold has a frame shaped construction of angle pieces and is arranged on a working plate.

Abstract: A formwork system is provided for prefabricated concrete parts, wherein a magnetic body can be set with its underside on a base plate and over which formwork parts can be fixed in their respective position. The formwork part has a lift-off stirrup engaging over the magnetic body, and between the lift-off stirrup and the cover side of the magnetic body facing away from the base plate there is a slot into which the magnetic body is retractable with a lifting element. This formwork system is characterized by a retaining elements which are releasably coupled on the magnetic body when it is retracted into the slot. This has the advantage that, by the couplable retaining elements, the magnetic body is securely fixed in the lift-off stirrup in its retracted state. Preferably, the coupling elements are constructed as magnetic and adhesion surfaces, which are arranged in the region of the slot between the magnetic body and lift-off stirrup.

Abstract: A cast mould for use in the manufacture of a contact lens by the polymerisation of a flowable precursor comprises a female mould part and a male mould part. The female mould part has a concave first surface region adapted to receive the flowable precursor in use, and a second surface region. The male mould part has a convex first surface region and a second surface region. The male mould part is engageable with the female mould part to define a lens-forming recess between the concave and convex surface regions and to define a first overflow cavity between said second surface regions. The first overflow cavity is adapted to receive excess flowable precursor displaced from the lens-forming recess in use, and the first overflow cavity is provided with first retaining means such that, in use, after polymerisation, polymer in the first overflow cavity is mechanically interlocked with a single one of the mould parts after separation of the mould parts.

Abstract: Laminae suitable for use in molds for forming retroreflective cube corner elements and methods for making such laminae are disclosed. A representative lamina includes a first row of cube corner elements disposed in a first orientation and a second row of optically opposing cube corner elements disposed. The working surface of a lamina is provided with a plurality of cube corner elements formed by the optical surfaces defined by three groove sets. Opposing first and second groove sets are formed in the working surface of a lamina. The first groove set forms a plurality of structures having first and second optical surfaces disposed in mutually perpendicular planes that intersect along a reference edge. The second groove set forms a corresponding plurality of structures on the opposite side of the lamina. A third groove is formed in the working surface of the lamina along an axis substantially perpendicular to the axes of the grooves of the first and second groove sets.

Abstract: A candle making apparatus for molding a candle including a container and a plate is provided. The plate has a rod attached thereto. The plate is place within the container so that the rod extends above the rim of the container and the plate rests on the bottom of the container. In order to use the apparatus hot wax is poured into the container and the wax is allowed to cool. Once the wax has cooled, the rod is grasped and the plate and rod are removed from the container with the wax molded around the rod. Once the plate and rod are removed from the container, the plate is grasped and the molded wax is removed from the plate so that a hole is formed through the center of the wax. Next, a waxed wick is inserted through the hole in the molded wax thereby forming a candle.

Abstract: A collapsible mould for preforming produce in a frozen state includes top, bottom and side surfaces and biasing means for yielding against expansive pressure of the produce encountered during freezing, which surfaces are self-supporting against the forces of expansion during the freezing process.

Abstract: This invention relates to an improved mould for casting a standard Magnesium ingot. The mould is constructed so as to minimize the surface area of the molten Magnesium which is exposed to the surrounding air. This significantly reduces the reliance on costly or harmful gases typically used in the casting process. The vertical mould which is internally tapered, has an open top and a closure at the bottom thereof. The ingot is easily removed from the mould when said closure is opened. The mould is adapted for use as part of an automated process employing a cyclic conveyance system for efficiently producing Magnesium ingots from recycled scrap Magnesium.

Abstract: Laminae suitable for use in molds for forming retroreflective cube corner elements and methods for making such laminae are disclosed. A representative lamina includes a first row of cube corner elements disposed in a first orientation and a second row of optically opposing cube corner elements disposed. The working surface of a lamina is provided with a plurality of cube corner elements formed by the optical surfaces defined by three groove sets. Opposing first and second groove sets are formed in the working surface of a lamina. The first groove set forms a plurality of structures having first and second optical surfaces disposed in mutually perpendicular planes that intersect along a reference edge. The second groove set forms a corresponding plurality of structures on the opposite side of the lamina. A third groove is formed in the working surface of the lamina along an axis substantially perpendicular to the axes of the grooves of the first and second groove sets.

Abstract: A new technique for efficiently manufacturing jewelry includes the use of a universal frame in combination with a low cost flexible mold. Various inserts can also be used to customize jewelry pieces made using the mold and frame. The material cured in the mold can be cured with ultraviolet light, which penetrates the mold, the mold frame and an arbor, which transmit ultraviolet light to better cure the item being molded.

Abstract: A mold for molding a core for use in casting hollow parts includes, a lower mold portion and an upper mold portion defining therein a cavity corresponding to the outer surface of the core The lower mold portion includes a cutout disposed along a parting line defined between the lower mold portion and the upper mold portion and opening onto the cavity After introduction of a ceramic slurry mixture into the mold the upper mold portion is removable, to expose a first side of the core and a protective flash formed in the cutout Desirably, a heat shield is positioned over the protective flash and the exposed portion of the parting line of the lower mold portion so that the lower mold portion is not exposed directly to a flame during a preliminary firing to impart sufficient strength to the ceramic core so that the ceramic core may be handled.

Abstract: An injection mold for molding a spool with flanges at both ends of a shaft such that the inner wall surfaces of the flanges are not flawed, and the dimension between the flange inner wall surfaces is uniform and thus the flange inner wall surfaces are free from distortion, and further the cooling time is short and hence the molding cycle can be shortened. Two mold members for molding the outer periphery of the shaft of the spool and the inner wall surfaces of the flanges are formed of a material having relatively low thermal conductivity. A pair of mold members for molding the outer wall surfaces of the flanges are formed of a material having relatively high thermal conductivity at least at portions thereof that mold the outer wall surfaces of the flanges.

Abstract: Lens mold assembly including a first and a second mold cooperating with each other to define a mold cavity for molding an ophthalmic lens with the first and second molds being held in line contact with each other at a radial position, wherein at least one of the two molds consists of a central molding portion located radially inwardly of the radial position, and an outer rim portion located radially outwardly of the radial position, the central molding portion cooperating with the other mold to define the mold cavity, the above-indicated at least one mold having a mold surface which is opposed to a mold surface of the other mold when the two molds are assembled together, the mold surface of the at least one mold consisting of a central lens-forming region in the central molding portion, and an outer peripheral non lens-forming region in the outer rim portion, at least a part of the lens-forming region adjacent to the radial position providing a concave portion, while at least a part of the outer peripheral no

Abstract: Laminae suitable for use in molds for forming retroreflective cube corner elements and methods for making such laminae are disclosed. A representative lamina includes a first row of cube corner elements disposed in a first orientation and a second row of optically opposing cube corner elements disposed. The working surface of a lamina is provided with a plurality of cube corner elements formed by the optical surfaces defined by three groove sets. Opposing first and second groove sets are formed in the working surface of a lamina. The first groove set forms a plurality of structures having first and second optical surfaces disposed in mutually perpendicular planes that intersect along a reference edge. The second groove set forms a corresponding plurality of structures on the opposite side of the lamina. A third groove is formed in the working surface of the lamina along an axis substantially perpendicular to the axes of the grooves of the first and second groove sets.

Abstract: A form for manufacturing a resin mold has a frame housing a master model corresponding in shape to a product to be molded and having a space defined therein for receiving the ultraviolet-curable resin poured therein around the master model. The frame is made of an ultraviolet-permeable material. When ultraviolet radiation is applied outside of the frame to the frame, the ultraviolet-curable resin in the frame is cured into a resin mold. The resin mold can easily and quickly be manufactured. The resin mold can also reliably be clamped by a clamping jig for producing a high-quality molded product.

Abstract: An apparatus for molding the hulls of vessels comprises a plurality of individual starboard base panels, starboard side panels, port base panels and port side panels, interconnected in a number of respective first panel groups and second panel groups, which groups are then connected side-by-side along the length of the vessel hull to be formed. The first panel groups are longitudinally spaced from one another and carried by adjustable vertical supports, whereas the second panel groups are removably mounted in between adjacent first panel groups to form a continuous negative mold surface against which the vessel hull can be constructed.

Abstract: This invention relates to an apparatus for baking letters of the alphabet and/or numerals. The apparatus includes a cake pan blank foldable into a cake pan, a grid insert template and one or more space-occupying insert blanks foldable into space-occupying inserts. The grid template insert contains removable grid-defined sections which sections are selectively removable so as to leave openings in the grid template insert. The space-occupying inserts are interfitted with the openings and the grid template insert and space-occupying inserts are then placed into the cake pan so that the volume of the cake pan not occupied by the space-occupying inserts takes the shape of a letter or numeral for receiving batter.

Abstract: A mold for forming an inflatable medical balloon having inverted conically shaped tapered regions, comprising: a mold body defining a mold cavity having an inner molding surface, and opposing first and second generally conical molding surfaces disposed along a longitudinal axis passing through the mold cavity, each of the first and second generally conical surfaces defining a frustum tapering inwardly from a base disposed perpendicular to the longitudinal axis of the mold cavity and located away from the center of the mold cavity, to an apex disposed along the longitudinal axis towards the center of the mold cavity relative to the base; and a method of molding a balloon using the mold.

Abstract: A new technique for efficiently manufacturing jewelry includes the use of a universal frame in combination with a low cost flexible mold. Various inserts can also be used to customize jewelry pieces made using the mold and frame.

Abstract: A formwork system for prefabricated concrete parts has a baseplate (1) on which is mounted a magnet element (2A) which holds formwork or attachment elements in their positions. In order to enable such formwork or attachment elements to be handled more easily, they are equipped with a lifting frame (14) which overlies the magnet element (2A) and, on the side of the magnet element (2A) facing away from the baseplate (1), there is a gap (19) between the magnet element (2A) and the lifting frame (14). A suitably designed spring device (25) in the lifting mechanism can be used, after zeroing, to enable lifting to be carried out automatically.

Abstract: A mold assembly for forming a lens blank which gives a contact lens includes an upper and a lower mold half which cooperate with each other to define a substantially fluid-tight mold cavity when the two halves are assembled together. The mold cavity is filled with a monomer liquid which is polymerized to provide the lens blank that is to be subjected to a cutting operation for forming a base and a front curved surface of the contact lens. The upper mold half includes a flexible thin-walled portion which has a downwardly convex shape and which partially defines the mold cavity. The thin-walled portion is deformable to absorb expansion or shrinkage of the monomer liquid during polymerization thereof in the mold cavity. The lower mold half includes a base portion at which the lower mold half is clamped by a chuck of a lathe during the cutting operation. A mold portion of the lower mold half has a molding surface which is provided with a recess or protrusion for holding the lens blank on the lower mold half.

Abstract: A multi-part mold assembly, which may be incorporated in a kit assembly along with other structural components, to form a lipstick product which is either formed from a plurality of unused remnants of previously used lipstick products or a "customized" lipstick made up of a newly blended color or alternatively, a lipstick having at least two separately colored longitudinal halves. In one embodiment, the mold assembly is specifically structured to form a whole or complete lipstick product whether from the left-over portions or remnants of several lipsticks or from a one or more colors to arrive at a "customized" lip color, for example by mixing a main or base shade with another color in order to darken or lighten the main shade.

Abstract: A mold assembly and method for producing a resin based countertop having an integrally formed sink bowl and a built-up edge. An elongate base is defined by a central surface area which is bounded by a plurality of interconnecting and elevated sides to establish a mold enclosure which is a negative shape of the countertop to be produced. A template is settable upon the elongate base and movable in a selected longitudinal direction so that an opening formed in the template is positioned in overlaying fashion at a desired location along the central area. A first sink bowl pattern is placeable in mating fashion within the opening in the template and upon the central area of the base prior to removal of the template. First applications of selected resinous materials are provided within the mold enclosure and around an exterior circumference of the first sink bowl pattern.

Abstract: Designs for basecurves are disclosed which are designed to promote adhesion of an excess polymer HEMA ring to the basecurve during a demolding operation such that the excess polymer HEMA ring is removed along with the basecurve during the demolding operation. The basecurve mold designs promote and maintain adhesion of an excess polymer HEMA ring to the basecurve in a process for molding cast contact lenses in mold assemblies, each comprising a frontcurve and a spaced basecurve, and wherein a molded lens is formed therebetween. In an embodiment of the invention, the annular area of the basecurve mold can be formed with an annular step which includes projecting teeth positioned therearound which project into the excess polymer HEMA ring.

Abstract: A mold assembly including an outer mold and an associated inner mold, the inner mold being organized to engage in the outer mold, the outer mold having a curved main portion with a central opening and an outer rim extending in a plane, and the inner mold having a curved main portion with a central chimney shaped to pass with small clearance through the opening and an outer rim which, when the molds are mutually engaged, is coplanar with the outer rim of the outer mold and co-operates therewith to close the molding space defined between the curved portions.

Abstract: A panel configuration and manufacturing technique are disclosed. The panel simulates a number of shingles each having a hollow end portion. Several of these panels may be utilized to provide an exterior building covering. When installed, hollow end portions of adjacent panels overlap to provide a leak resistant, realistic appearing covering. A number of panels may be formed by positioning each of a number of regions of a web of polymeric resin between a mold and a plug. Each of the regions is molded while in a ductile state to form a corresponding one of the multi-shingle panels. An undercut portion is formed in each of the regions during molding to define an end portion of the panel. This formation includes moving the plug relative to the mold. The sheet is cut after molding to separate the panels from the web.

Abstract: A pile forming system and method for forming a pile. The pile forming system comprises a top pile forming member, a bottom pile forming member, and an end plate assembled together to provide a complete pile form which can then be filled with concrete to form the pile. Additionally, the pile forming system incorporates a tip forming member which can be secured to one end of the pile form to form a sharp tip at one end of the pile facilitating driving the pile into a subsurface. Additional pairs of top and bottom pile forming members may be joined end to end to form longer piles. After the desired pile form is assembled, concrete is poured or pumped into the pile form through openings on the top surface of the pile form. Preferably, reinforcement bars or rebars which are coated with a non-permeable coating to prevent rust are placed in the pile form before the pouring of the concrete.

Abstract: Collimated white light is transmitted through a transparent lens mold having a molded lens resting on a curved surface thereof. A telecentric lens and a camera having a digital output are used to view the illuminated lens to obtain pixel image data of the lens. The pixel image data is analyzed by a computer to detect deformities in the molded lens.

Abstract: A method is provided for constructing a snow shelter. A set of fabric panels is connected together to provide a short skirt into which snow is filled throughout and compacted on the periphery. Panels are then connected to a higher level and additional snow is filled in throughout and compacted on the periphery. When the panels have been completely connected and filled with snow, they encompass a snow dome packed around the surface. The panels may then be removed and the dome hollowed out to provide a snow shelter. The hollowing out process may be guided through the use of probes that are pressed into the dome from the outside to provide a depth gauge. A closeable door may also be installed against the dome opening after the dome is constructed.

Abstract: A reconfigurable injection mold machine (10) having a fixed mold body (60, 60') and two movable mold bodies (62, 62' and 64, 64') that can be automatically repositioned with respect to each other to make different mold cavities for molding different parts. The three mold bodies (60,60', 62,62' and 64,64') each include a laminate subassembly (140,140', 142,142', 144,144') composed of a plurality of laminates (162,162', 164,164', 204,204', 234,234') and a mounting frame (146,146', 192,192', 218,218') arranged to hold and position the laminates during assembly to the mold. The mounting frame permits preassembly of the laminates on the workbench into a subassembly (140,140', 142,142', 144,144') that is then easily inserted into an opening in the mold (60,60', 62,62' and 64,64') and secured in place.

Abstract: A mold and divider assembly for creating a solid surface countertop having an exterior edge according to different shapes and sizes. The mold includes a planar shaped surface which is bounded by a polygonal shaped body, at least one side of which has a raised and inwardly contoured mold defining edge. A first elongated dividing member equals a length of a first selected side of the mold and is placeable upon the planar surface so as to be movable in directions towards and away from the first selected side. A second elongated dividing member extends between the first dividing member and a second selected side of the mold so that the dividing members define in combination a subset area of the mold for receiving a resinous material pour. The second dividing member may be providing in differing lengths as a kit for producing an assortment of countertops according to differing dimensions. The mold may further be provided in a generally L-shape or rectangular shape.

Abstract: An ice sculpture mold having a bottom die half forming a cavity configured to produce a first half portion of a three-dimensional ice sculpture and a top die half with a cavity to produce the second half portion of the ice sculpture. In one embodiment straps are employed to hold the two die halves together during freezing. In another embodiment, a unique leak proof hinge is employed on one side and a latch on the opposite side.

Abstract: A composite insulator-producing lateral type molding apparatus includes a mold body constituted by a first molding unit and a second molding unit, each of said first and second molding units being provided, at an inner peripheral face, with recesses for the formation of a housing constituted by a plurality of shed portions and a axial portion connecting these shed portions, means for opening or tightening the first molding unit and the second molding unit, a pouring passage for pouring a housing-forming material into said recesses, and housing-forming material escape holes. A core member of the insulator is placed between the first and second molding units, the first and second molds are tightened, and the housing-forming material is poured into said recesses to form the housing. The first molding unit and the second molding unit extend laterally, and that the core member is laterally arranged horizontally between first and second molding units.

Abstract: A mold assembly for injection molding including a female mold having a first pair of opposite inside walls and a second pair of opposite inside walls disposed at four sides and defining a trapezoidal cavitys two trapezoidal locating plates respectively fastened to the first pair of opposite inside walls inside the female mold, and defining two symmetrical pairs of sliding ways within the female mold at different elevations between the trapezoidal locating plates and the second pair of opposite inside walls, and a mold set fitting the trapezoidal cavity of the mold set, the female mold consisting of a left mold half and a right mold half detachably abutted together, each mold half having two sliding tongues at different elevations and slidably fitted into the sliding ways.

Abstract: A concrete building block (2) has complementary projections (10) and recesses (12) to cause it to interlock with other blocks (2). A T-shaped channel (16, 26) on the top surface (4) receives an anchor member (32). A projecting end (36) of the member (32) may be secured to an anchor cable (104). The ends of a metal cable (22) are embedded in the block (2) with an eye portion (24) projecting into an increased depth channel portion (20). The lower surface (6) of the block (2) has parallel channels (28) for receiving the tines of a forklift. The channels (16, 28) have breakaway walls (18, 30) at their outer ends, which are not broken away unless the channels (16, 28) are to be used. The walls (18, 30) prevent concrete from flowing out of the channels (16, 28) when reinforcing concrete is poured through vertical openings (14) in the block (2). In molding the block (2), slugs (86) are releasably attached to opposite mold walls to form the openings (14).

Abstract: A mold especially adapted for forming precast, waffle-shaped concrete panels employs a one-piece mold body of flexible plastic sheet material to which rigid side rails are secured by tongue and groove longitudinal joints. The mold may be rapidly stripped and reset due to a hinge action provided by partial sides of the flexible body to which the rigid side rails are joined. The side rails and other structural features provide a simple mold structure that may be readily and efficiently employed for on-site production of panels. The configuration of the side rails and associated joints facilitates the replacement of a wornout mold body. A cover may be placed over the mold body while the concrete cures and automatically lifted therefrom after a predetermined time to allow the concrete to cool. Recess formers and connector covers for the panels are provided for appearance and security.

Abstract: The apparatus is an assembly jig for constructing prefabricated concrete wall sections. Two parallel elongated "L" cross section members, each with an outer vertical wall, are connected to a base structure with pivots, and several separated sections of inner vertical walls are attached by pivots at the edge of the base of each "L" to form parallel channel molds with spaces in the inner walls to receive prefabricated concrete studs. The wall is constructed by placing concrete studs and insulation sheets between the channels, and pouring concrete into the channel molds and over the studs and insulation sheets. The "L" members are pivoted down to release the hardened concrete beam which has been formed within each mold and thereby facilitate removal of the finished wall section from the assembly jig.

Abstract: This invention relates to a process for manufacturing cushion and mattress elements made of supple, open-cell cellular matter, by casting into a mould, from a head ensuring mixture of at least two basic components, of the product thus formed; said mould is transferred from a preparation station where a demoulding agent is projected, to be presented beneath said head; the latter is displaced along a continuous path covering at least all the surface of the mould and at a speed ensuring, on the one hand, a uniform distribution of the product and, on the other hand, a total time of passage less than the maximum expansion time of the product projected at the beginning of this path; a cover is closed on said mould, and the latter is transferred towards standby stations where it remains thus for a time longer than that of maturing of the cellular matter obtained; the cushion element thus constituted is removed and the mould is transferred back towards the preparation station.

Abstract: The invention provides a disposable plastic mold assembly for an intraocular lens or the optic body thereof, which is inexpensive, less labor intensive than prior art intraocular lens molding techniques, and produces an intraocular lens having smooth, polished edges which require little or no post-mold finishing work. Numerous innovative features of the invention include an edge design which assures a seal between the male and female molds to thereby minimize flash during the cast molding operation, and the provision of a way to pre-align the male and female molds during assembly, consisting of an interference fitting relationship between the male and female molds.

Abstract: A domed container for the preparation and display of food includes a receptacle, a dome cover, and a hollow mold member. The receptacle has a bottom with a top surface and an outer circumference. The bottom possesses at least one groove in a closed, continuous pattern. The groove has two side surfaces and a bottom surface, and each side surface is configured to include projections extending into the groove. The dome cover includes a top wall having at least one wall depending therefrom. The depending wall has an outside surface and an inside surface. The container possesses a locking structure for releasably locking the cover to the receptacle. The hollow mold member, which forms a closed continuous pattern, has a lower edge that fits into the groove of the receptacle and is held in place from each side by an interference fit between the projections of the side surfaces of the groove and the lower edge, thereby removably attaching the hollow mold member perpendicularly to the receptacle.

Abstract: A moldplate, defining first and second planar surfaces, is constructed to have a lift foot that supports a prefabricated panel for lifting and transport. The moldplate includes support tabs that attach to a lifting truss in a manner that positions one surface of the moldplate so that a vector normal to the mold surface has a horizontal component and an upward, vertical component to support the slabs during lifting and transport to a drying station. The moldplate can be positioned in spaced, confronting, generally parallel vertical relation to a fixed, planar surface with a peripheral sidewall positioned between the two surfaces, defining a void for receiving a pourable material to vertically form the prefabricated panel.

Abstract: A pair of molds or forms for constructing a geodesic igloo are described. One of the molds forms a hexagonal block of snow; the other, a pentagonal block. An icosahedron igloo with frequency 3 or 6 is constructed by shovelling snow into the molds, compacting such snow, and then carefully placing the compacted block of snow onto the igloo being constructed.

Abstract: A mold and injection molding process for the production of a fishing lure having multiple, integral bristles extending vertically from the lure. The mold defines an internal cavity in communication with an injection port and a ventilation port. The internal cavity defines a fishing lure having a desired shape. The cavity contains a pair of porous halves that facilitate the formation of integral bristles. Molten material is injected into the cavity through the injection port while air escapes through the ventilation port. The molten material penetrates the porous insert to form the bristles. The bristles are concurrently and integrally molded with the rest of the lure. After curing, the fishing lure is removed from the mold.

Abstract: A mold box has a cavity for receiving molding sand. The cavity is defined by the bottom wall of the box, by an outer peripheral wall, and a central part having a top wall disposed in a lowered plane relative to the top wall of the box. Pouring opening shaping discs and rings are releasably supported on the top wall of the central part wherein different shapes and structures of these shaping discs and rings can be substituted one for another to vary the size and shape of the sand basin pouring opening. The discs and rings also are shaped and sized whereby to provide for riser metal for the mold. A sand saver insert is capable of being employed in mold box structures that incorporate waste areas of molding sand.

Abstract: A mold assembly includes first and second mold sections having respective first and second mold cavity defining surfaces, the first mold cavity defining surface terminating in an encircling peripheral rim and the second mold cavity defining surface terminating in a deformable peripheral annulus disposed at a diameter corresponding to the rim, and cooperating tapers depending from each of the first and second molds for relatively centering the molds.

Abstract: An apparatus and method for the preparation of large DNA molecules from cells which have been cast in agarose. Specifically, the invention provides for a processing chamber that allows agarose plugs to be molded and processed within the same apparatus. This greatly reduces the amount of manipulation required of such DNA samples and reduces the loss of material due to agarose plug breakage. The mold has a filling port for agarose and a slot for at least one retainer for preventing the molten agarose from exiting through openings in the mold through which DNA processing solutions later access the molded agarose plugs.

Abstract: Liquid containment apparatus comprising a metal storage tank mounted within a liquid impermeable, cast concrete vault. An open-topped, reinforced casts concrete vault base includes an internal thermal liner, liquid impermeable membrane, vault seal, tank cradles and support legs. Sloped interior walls, a sump and siphon facilitate liquid and/or condensate removal from the base. A vault cover is integrally cast with the tank and supports a number of projecting fill, vent, gauge, inspection, and siphon standpipes. Chamfered and flanged edges at the cover and lift hooks facilitate cover removal and alignment, and tank inspection. The cover and tank are cast in alignment to one another at an elevated, multi-section molding form having sliding wing sections.

Abstract: A foam molding apparatus with improved seal for sealing the mold lid to the bowl. The bowl and lid include inclined sealing surfaces surrounding the mold cavity with the bowl sealing surfaces being concave and the lid sealing surface being convex. Both the bowl and lid are resiliently supported on frames so that the lid can self align upon the bowl as the convex lid sealing surface engages the concave bowl sealing surface. Adjusting screws are carried by the lid carrier frame and engage the lid to apply pressure to the lid forcing the lid against the bowl sealing surface with the bowl being resiliently carried on a supporting frame allowing the bowl to float relative to the frame to achieve an even pressure distribution about the mold cavity at the sealing surfaces. The lid and bowl are both formed with fluid passages to enable hot water to be circulated through the mold maintaining the mold at an elevated temperature.