Abstract: A conveyor suspension idler mold apparatus for molding a one-piece, elongated, flexible, polymer idler is disclosed along with a method of molding the conveyor idler and the conveyor idler apparatus. A vertical mold has specially shaped cavities for molding the idler without entrapping air, along with shaft positioning and support brackets at each end of the mold for molding a metal shaft into each end of the polymer idler. The shafts positioning and supporting brackets utilize the groove for the bearing retaining ring for locking each shaft into precise position.

Abstract: An apparatus and method for producing ingot mold caps is provided in which a shaped opening in a chill element is lined with a preformed refractory fiber pad and metal is cast in the lined opening around a cored staple.

Abstract: Wall assemblies useful for a wide variety of different applications can be economically constructed utilizing extruded polymer panels shaped so as to have sloped positioning walls located adjacent to interlocking connecting elements at their side edges. The connecting elements are shaped so that the connecting element along one side edge of one panel can be pushed into engagement with a connecting element along another side edge of another panel through the use of a tool pressing against the adjacent positioning walls when the side edge of the first of the panels is located over the side edge of the other panel.

Abstract: The molding process comprises pouring a plastic compound around a natural tree trunk to make a mold which has the tree trunk surface impressed therein. The plastic mold is supported in a frame made from wood which has a galvanized metal support therein. The metal brackets and structural rods are positioned on the base of the frame and a plastic core member may be used and removed to create the hollow interior of the tree trunk base.

Abstract: This invention concerns an improved apparatus for extruding abrasive pastes, especially those which contain ground glass together with polymerizable material, and which comprises a conventional piston and cylinder extrusion apparatus in which the working surfaces are protected by a replaceable lining system consisting of a thin tubular liner and two discs substantially closing its ends and enclosing the paste to be extruded. In the preferred embodiment (FIG. 1) the lining system is made of polypropylene.

Abstract: Silica- or alumina-containing granules are loaded into a mold of which the inner walls at least are formed of a nonbonding material constituted of ferrochromite, magnesiochromite, calciochromite, or trivalent-chromium oxide. The mass is then heated to a temperature above the softening point of the granules so as to fuse them together and thereafter the heated mass is hardened. As the mass can inherently not bond to the lining of the mold subsequent separation is relatively easy.

Abstract: Removable form for use in pouring concrete walls, the form being comprised of a high strength, impact resistant, light weight material and being constructed to provide thermal insulation of concrete poured between two of the forms. The forms are each comprised of a face plate backed by an insulative support structure. The insulative support structure has a honeycomb construction filled with an insulative material, the honeycomb construction providing strength to the insulative support structure to prevent bending or distortion. A supporting frame is further provided as a structural supporting backing for the insulative support section to increase its resistance to bending.

Abstract: A frame structure for casting a concrete building panel has a plurality of panel edge molding frame members with a generally U-shaped cross-section, a plurality of panel corner frame members with a configuration which corresponds to the angle of the corner of the panel. A number of edge molding frame members and the corner frame members are assembled in a panel molding frame with a length and width corresponding to the length and width of the panel to be molded with the ends of the edge molding frame members connected by the panel corner frame members, and with the opening of the U-shaped cross-section facing inwardly of the panel molding frame. Connectors rigidly connect the edge molding frame members to each other and to the panel corner frame members and a liner structure is provided in the interior of each of the edge molding frame members. The surfaces of the liner structure facing the space within the panel molding frame has a shape complementary to the shape of the edge of the panel to be molded.

Abstract: A lightweight, take-down beam form, including a series of U-frames held together by spaced apart adjustable longitudinal braces secured along the frame uprights and bottom longitudinal braces, support strippable plywood or plastic or suitable material beam forming sheets. The U-frames are bolted together for easy and quick assembly and easy disassembly when in place on a cured concrete beam, permitting easy release of the forming sheets from completed and cured concrete beams. For normal use, the form strips from a set beam as a modular unit. For some purposes, such as for spandrels, one or both sides could be released for the removal of the form.

Abstract: A liner for concrete forms and method for making poured concrete walls comprises a liner body constructed of insulative material and shaped for positioning between a pair of interconnected form panels. The liner body has opposing sides, one of which is positioned abutting an interior surface of a first one of the panels. The other side of the liner body as a textured, decorative surface spaced from the other panels, and is contoured for molding concrete poured therebetween. A plurality of similarly shaped liner bodies are placed in a side-by-side relationship along the interior surface of each section of form panels, with the textured surface of each oriented inwardly. Unsolidified cementitous material, such as concrete, is poured into the cavity having a single insert therein or formed between opposing inserts, and is cured to a solidified state.

Abstract: A high melting temperature metal, casting mold is made of sheet metal embedded in a supporting mass of refractory particles preventing deformation of the sheet metal under the weight of the cast metal and conducting heat from the sheet metal at a rate preventing complete melting of the sheet metal.

Abstract: A mold for parts of a building such as the floors, walls, ceilings and roofs mounted on a supporting frame which rests, via a resilient member, on a supporting member through which extend heating tubes provided with heat radiating ribs. The bottom of the mold is the top of the heated space within the supporting member and frame. One or more of the sides of the mold are pivotable from projecting members extending outwardly from the supporting frame and clamping devices are provided to clamp the sides in position and against the floor mold. Columns may be included in the mold and are positioned by suspension members provided on the mold sides. A tile mat for positioning tiles may be placed on the floor of the mold. Reinforcement may also be positioned in the mold. For an outer wall, a layer of concrete followed by a layer of polystyrene foam and an inner layer of a lightweight material may be introduced and cast in succession in the mold. The inner mold sides may be profiled as desired.

Abstract: A food mold is disclosed which has a flexible sanitary liner and a rigid holder for the liner, the liner has a rim for securement to the holder and a cup shaped portion for forming food to a predetermined shape, the cup is flexibly and resiliently movable for discharge of food from the mold when the mold is turned upside down; the holder may include a finger actuatable valve for control of flow of air into a space between the liner and holder, for control of movement of the cup and release of the molded food product, and the liner may have a weight attached to the cup for automatically retracting the cup when the mold is turned from an inverted emptying to a normal upright filling position.

Abstract: There is disclosed an article useful for producing concrete with textured patterns which includes a membrane of water permeable material having a pattern prepared on one side thereof with a water soluble retardant for the setting of cement and with the retardant pattern completely covered with a waterproof film that is bonded to the membrane immediately adjacent the retardant pattern. There is also disclosed a method for preparing concrete to have a pattern on its surface employing the article.

Abstract: A brick press is disclosed having a turntable carrying a plurality of molds angularly spaced from each other and having equipment associated therewith establishing a plurality of series of operating stations, each series including at least a precompression station, a compression station and an ejection station. The molds carried by the turntable are provided with replaceable liners. A material handling and feed system is also disclosed, providing for preparation of particulate or granular materials to be charged into the molds.

Abstract: A mold for forming lens blanks to meniscus shapes under applied heat and a force created by partial vacuum. A cupped lens shaping surface in the mold is cushioned and covered with a synthetic fabric for effecting exceptional accuracy in lens blank conformance to shaping surface curvature, optimum surface smoothness and quick release upon completion of a forming cycle.

Abstract: An upright mold for forming planar, thin, flexible, elastomeric liners for large modular concrete forms, to produce surface textured concrete walls and the like, includes a positive master of a flexible elastomeric material, secured to a planar, rigid backing, having normal extending, integral gasketing flanges on three sides, a modular form member having a planar surface mounted in the extending flanges, and means for temporarily securing said modular form member in sealing relation to said flanges and with its planar surface spaced a predetermined distance from the master. Liquid polyurethane precursor is poured into the mold form top side permitting trapped air in the liquid to travel to the surface of the modular form member and upwardly out the top of the mold. A small reservoir of the liquid may be maintained at the top of the mold to insure positive pressure of liquid into the mold for the complete filling of the spaces of the mold with the liquid precursor.

Abstract: A core member used in a moulding flask for making prefabricated concrete products, comprising a hollow tubular member of predetermined size having all outer surfaces intended to be in contact with concrete mixture covered by a thin layer of rubber plate.

Abstract: A sheet of organic material having a creped or ridged formation is first coated with a film of silicone resin and then overcoated with a layer of a flexible organic resin. Both coatings conform to the ridged surface. The sheet is positioned inside a mold cover. When a plastic mixture is foamed, the top surface of the molded object contacts the flexible organic material on the surface of the sheet and adheres thereto. When the cover is removed, and the sheet peeled off, the molded article has its top surface decorated with the flexible organic sheet material.

Abstract: A mold for candles having a three dimensional surface pattern is formed of a split elongated shell having juxtaposed edges detachably connected together. Lining the shell is a split sleeve having an inner surface bearing the selected three dimensional pattern and longitudinal edges in close face to face juxtaposition. The sleeve is formed of silicone rubber initially formed in its final molding configuration so that after molding, the shell may be removed from the sleeve and the split sleeve may be peeled back from the molded article, resiliently returning to its mold configuration when the article is removed. Flexibility of the sleeve permits it to be removed from undercut surface of the pattern.

Abstract: A textured mold for vertically casting concrete wall slabs. The mold has one mobile vertical form wall mounted on a supporting carriage which runs along a track and a stationary vertical form wall rigidly anchored to a concrete foundation. Each form wall has a textured mold liner permitting various patterns to be impressed upon the surface of the concrete slabs. The carriage of the mobile form permits the mobile form to be removably connected to the stationary form. This concrete mold permits vertically casting concrete wall slabs with textured surfaces formed into the wet concrete.

Abstract: An apparatus for forming ice cubes mold means are provided having walls that define a plurality of separate cavities. A resilient, pliable empty bag is brought into engagement in a mold to be frozen and is placed in contact with the mold means. Preferably the mold means is comprised of two mold sections between which is sandwiched the liquid pliable package which because of its inherent resiliency and pliability the liquid filled package conforms to the shape of the cavities in the mold means. Passageways are provided that interconnect adjacent ones of the cavities so that the resulting frozen articles are connected to each other by readily frangible sections. In one form of the invention a reservoir is provided for containing the liquid to be frozen as well as a plurality of conduit means that are used for filling a number of the pliable packages positioned within the mold means.

Abstract: A mold for forming plastic foam parts in which an injection-molded plastic member forms a molding surface of the foam molding cavity against which foam plastic is adapted to be molded. The plastic member is preferably injection molded in a metal molding die from either polyethylene or polypropylene so that its molding surface is the reverse of the exterior surface of the plastic part to be foam molded therein. Vent passages and sealing beads may be integrally formed with the injection-molded member.

Abstract: A multiple use, flexible, elastomeric liner for forms for concrete faced walls prepared by having a series of rigid panels in side by side relation, includes panels of liners for rigid panels having a concrete contacting face of a flexible, elastomeric synthetic polymer used throughout as a negative mold of a desired design in the finished concrete and having an opposed planar surface for face engagement with the form panels. The liner panels will not support the concrete for the wall without the backing panels. The elastomeric liner is a soft, flexible, resilient, elastomeric synthetic polymeric material which permits sharp relief designs having undercuts, and in edge engagement with similar panels squeeze together for a seamless surface in the completed concrete while leaving the impression of itself in exact detail in the hardened concrete.