Abstract: A mold for making a bucket having a pivoted handle. The mold has cooperating mold parts defining cavities for molding a bucket and slotted bail retention means. The mold parts are movable only linearly to release the molded product.

Abstract: A mold for preparing a plug suitable for making a dental shade sample having a layer of porcelain material having a known thickness; the mold comprises: a base with a cylinder extending upwardly therefrom; a planar platform surface at the upper end of the cylinder, the cylinder being threaded in a region below the platform surface; and a hollow annular housing defining an internal cylindrical surface sized and cooperatively threaded to engage the cylinder threads. Rotation of the housing relative to the cylinder moves the housing vertically and continuously varies the known depth of the cavity between the housing and the platform surface. By proper positioning of the housing and cylinder a known desired cavity depth is obtained and filled with porcelain-forming material to mold a first shade layer. The housing is rotated to increase the cavity depth by known desired increments for subsequent layers.

Abstract: A mold for producing a padding member having side by side portions of different hardnesses integral with each other, and a method of producing the padding member using such mold. The mold has a lower half with partition walls movably extending upwardly through the bottom of the lower mold half into the interior of the lower mold half to define a plurality of cavities into which moldable materials of which the padding member is to be formed and having different hardnesses from each other can be contained. The upper mold half is placed over the lower mold half, and has pressing members extending downwardly which engage the edges of the partition walls and force the partition walls downwardly. The pressing members are spaced from each other along the partition walls, so that the materials on the opposite sides of the partition walls can contact each other and, while molding is being carried out, become integrally joined to each other.

Abstract: For the molding of bottle caps having irregular lower boundaries, such as caps having depending tabs, the conventional mold has a core and a surrounding sleeve in which the core slides. This is modified by using a split sleeve which is maintained in close contact with the core during molding, but whose elements are freed to move outwardly away from the core when the mold begins to open. This solves the prior art problem of the galling of the contacting surfaces of sleeve and core.

Abstract: An unsupported form system for ceiling formworks is disclosed which comprises of three elements, i.e. extensible shores, head elements on the top of said shores and form boards to be positioned directly on the head elements. The head elements have flat supports for the boards which, for their part, have an open frame, the edges thereof cooperating with truncated pyramid noses on said supports. The boards may be suspended on the head elements of erected shores from below and may be brought into their horizontal operational position with the next shores once these have been erected. Pivotal levers are used for supporting adjacent boards between those which are supported directly on the head elements which interconnect said shores in pairs.

Abstract: A process for manufacturing expanded polystyrene panels includes the following stages:(a) Preparation of pre-expanded panels of polystyrene by extrusion and simultaneous injection of propellent agent into an extruder fitted with an extrusion die of suitable type and in particular fitted with means allowing for good mixing of the molten polymer with the propellent agent and means allowing for uniform cooling to the best value of the temperature of the expandable plastic mass before exit from the die.(b) Conditioning of said panels at room temperature or at whatever temperature higher than room temperature, provided it is such to prevent the panels from undergoing either dimensional variation or deformation due to internal stress or true expansion.

Abstract: A machine for molding sheets of foamed material includes an upright stationary steam chest having opposing perforated external faces, and a pair of movable assemblies abuttable with the opposite faces of the steam chest to define mold cavities therewith. Each cavity forming assembly includes a mold frame extending normal to a face of the steam chest, and a platen positioned within and coupled to the mold frame. Jackscrews move each mold frame into and out of abutment with the steam chest, and also move each platen relative to its respective mold frame toward and away from the steam chest. A method of molding sheets of foamed material is also disclosed wherein heated polystyrene beads are squeezed by the movable platens to a predetermined thickness to provide a board having the desired dimensions and density.

Abstract: Apparatus for molding concrete wherein a mold has vertical side members which are mounted for rotation about internal axes substantially parallel to sides of said members.

Abstract: A group of molds, or baking tins, for placement of dough therein and in which the dough is baked. Each mold includes a bottom element surrounded by an upturned rim. The dough thus baked, in each mold, forms a rigid panel, and those panels are fitted together to form a gingerbread house, the molds including one for each of the walls, and the roof. The panels are fitted together and secured by placing icing in the junctures between the panels. The apparatus also includes a plurality of inserts or cookie cutters that are pressed into the fresh dough when it is put in the molds, and each cuts and isolates a piece of the dough from the main mass, that piece also being baked, and after the dough is baked, the inserts are removed, and the pieces are also removed, either by adhering to the inserts and being lifted out, or by being knocked out. This leaves openings in the panels which form windows and doors, and the pieces, or knockouts, are used to form a chimney to the house.

Abstract: A process using a mold having at least two complementary parts provided with internal surfaces defining a molding cavity, including placing a cover element on the internal surface of each mold part, extending the periphery of the cover elements beyond that of the internal surfaces, pouring a foaming composition undergoing reaction onto the cover element of one of the mold parts, waiting until the foam further expands and overflows slightly from the part of the mold into which it was poured, applying the other mold part to the first one so as to close the molding cavity, pressing the overflow foam into the extended cover elements, waiting until the foam fully cures, removing the padding from the mold and trimming the cover elements along the line joining them.

Abstract: A method and apparatus for molding ceramic ware includes a support table having a horizontal axis of rotation with a plurality of molds attached to opposed surfaces of the table for orientation in the vertical upright and vertical inverted positions. A fluid molding material is poured into the mold when in the open upright position and is permitted to set up to the extent of forming a shell and then inverted to pour the remaining molding material from the mold, while molds on the opposed surface are disposed in the upright position for receiving mold material.

Abstract: This invention concerns molds for forming concrete fireplaces and features mold sections mounted for rolling movement, and apparatus for suspending members in the mold during the casting operation.

Abstract: A mold for embedding a tubular member within a casing wherein the mold compensates for variations in length of the tubular member. The mold is a two-member structure wherein one of the members is provided with a cavity for receiving the tubular member and the casing. The cavity is closed at one end by a movable ring insert which moves relative to the assembled relationship of the tubular member within the casing to compensate for any length variations.

Abstract: An apparatus and method for producing a plurality of substantially dimensionally identical concrete structural modules. The apparatus facilitates the manufacture of a plurality of low cost molds of high dimensional accuracy which will consequently produce modules of high accuracy which can be interchanged, turned, and either horizontally or vertically assembled. A master pattern of the module having non-porous interior and exterior surfaces is positioned between inner and outer forms, the inner and outer spaces thus created are filled with a cementitious substance forming a mold having inner and outer mold segments with their mold faces formed against the non-porous pattern. The concrete molds are provided with various assembly mechanisms and shipped in matched sets to producers for use as forms in the production of the structural modules.

Abstract: PCT No. PCT/US79/00707 Sec. 371 Date Sept. 7, 1979 Sec. 102(e) Date Sept. 7, 1979 PCT Filed Sept. 7, 1979 PCT Pub. No. WO80/00673 PCT Pub. Date Apr. 17, 1980A combination bed concrete casting apparatus (20, 122 or 200) which allows either a single relatively wider elongated slab (116 or 200) or at least two relatively narrower elongated slabs (46 and 48 or 206 and 208) to be manufactured. A casting bed is divided longitudinally along the bottom wall into sections (34 and 36 or 202 and 204) which are movable transversely relative to each other. An elongate removable intermediate form (44 or 214) is positionable between the casting bed sections in a generally parallel relationship with the side form walls to form an intermediate wall. When it is desired to cast a single concrete member (116 or 200) extending all the way from one side form wall to the other, the intermediate form (44 or 214) is removed and the casting bed sections are moved closely adjacent one another.

Abstract: A mold comprises a base, a split die and a plunger. The base has longitudinal shoulders with resilient elements, and sloping surfaces which form an upwardly flaring nest adapted to accommodate a vertically movable die. The side walls of the die have their sloping surfaces in contact with the sloping surfaces of the longitudinal shoulders and, together with the die end walls, are placed around the die bottom. Provided between the base and the die are means for lifting the latter and means for supporting the die bottom in the raised position after the die has been lowered. Such die construction makes it possible to reduce the time required for its assembly and disassembly, as well as for detaching the finished abrasive segment from the die walls.

Abstract: A molding machine is disclosed which can be used in the manufacture of concrete building elements. A method for the molding of concrete modular units using the disclosed concrete molding machine is also provided. The molding machine is constructed of vertical walls joined to form a single outer frame which is moveable up and down by means of expandable joints such as pneumatic or hydraulic cylinders which allow positioning and vibration of the outer frame. To said outer frame are attached horizontally expandable joints which support at least two mold sides which can be placed in abutment by the action of the expandable joints so as to form the continuous sides of a mold. The bottom side of the sequentially assembled mold is provided by a metal plate to which the aforesaid sides are lowered or attached.

Abstract: A portable concrete molding apparatus for use in casting concrete building components of particular shapes. The apparatus includes a trailer onto which is mounted three mold sections with one of the mold sections fixedly attached to the trailer and with the other two mold sections movably attached to the trailer.

Abstract: An improved molding machine which overcomes the tendency of concrete members molded therein to become end distorted upon initial discharge movement relative to the mold cavities in which they are formed. The front set of plates which close that end of the multi-cavity mold box proximal to the discharge end of the machine are maintained in contact with the faces of the concrete member adjacent thereto at least during the initial breakaway of the concrete members from the sides of the mold. The molded members are forced out of the mold box by a hydraulic ram acting upon a second set of end plates which act to close the rear end of the mold cavities. Once the concrete members are smoothly moving relative to the mold cavities, the front set of end plates are withdrawn to enable the members to be completely discharged from the mold. A bleed orifice is placed in the return line of the hydraulic cylinder controlling the retraction action of the front end plates so that the two sets of end plates move in unison.

Abstract: Articulated mold for the manufacture of molded objects having opposed undercut parts comprises two dies whose parting surface passes between the opposed undercut parts of the molded object. In each die there are provided shells composed of segments which can be displaced by pushers in order to open the mold and eject the molded object.

Abstract: A snowball maker has opposed inner and outer cup-like shells which interfit to compact snow into a ball. The inner shell deforms, within outer shell, upon full insertion substantially to encircle the snow within the two shells. Upon separating the shells, the inner shell resiliently opens to its original shape for ready release of the compacted ball of snow.

Abstract: Block-forming means or shuttering apparatus for precast units of especially long dimension along one axis, a horizontal basic frame and two block-forming or shuttering walls of which are means for at least one is guided slidably being selectively adjustable along the basic frame to change the mutual distance between the two shuttering walls, piston and cylinder assemblies 16 for driving of said sliding guided means, and clamping means 19 for clamping together one of the slidable shuttering walls and the basic frame.

Abstract: A molding machine for the production of polygonal structural elements, e.g. concrete squares, comprises an assembly of vertical plates disposed between a pair of end members of a support and defining generally flat mold cavities of the shape desired with respective bottom members and lateral gates. The lateral gates are hinged to the rectangular bottom members at the ends thereof and are interconnected by respective bars so that all of the lateral gates along each side of molded cavities can be swung outward into release position and indeed into mold-closing positions by laterally shiftable carriers on the end members of the support.

Abstract: A manufacturing bench for molded construction elements is disclosed comprising molds whose bottom walls are defined by an elongated table and whose lateral walls are constituted at least in part by flexible blades placed edgewise on the table which are held taut. The lateral walls are longitudinally displaceable.

Abstract: A pair of spaced, parallel guide posts 18, 19 are mounted on and perpendicular to a lower platen 12 which supports a first mold half 20. A traversing member 33 is slidably mounted on the guide posts, and an upper platen 13 supporting a second mold half 21 is hinged to the traversing member for pivotal movement about an axle 14 laterally offset from the lower platen. A double acting operating cylinder 15 is hingedly mounted to the lower platen near the guide posts and to the upper platen near the hinged axle 14, and controls both the movement of the upper platen toward and away from the lower platen in a parallel orientation, and the pivotal movement of the upper platen after the traversing member has reached its upper limit of travel.

Abstract: A casting chill mold is provided for producing elongate metal ingots having a length to diameter ratio in excess of 10:1 in which the wall thickness of the mold is substantially no greater than that required to enable the walls to withstand the hydrostatic pressure of the melt upon the occurrence of thermal stress. Preferably the mold is surrounded by a spaced supporting framework contacting the outer surface of the mold at spaced discrete small area points of contact.

Abstract: A sprocket mold system is provided for inexpensive molding of a number of different diameter sprockets each having an idential sprocket tooth size. Each tooth is formed between a pair of tooth-defining elements having accurately curved surfaces, these elements being accurately positioned in a mold insert of the desired diameter. Different mold inserts are provided for different numbers of sprocket teeth to give different diameters of final molded sprockets. A modification of the invention is adapted to the manufacture of gears. While the principles of gear design preclude the use of the same tooth-defining elements for gears of different diameters the method of forming and mounting the tooth-defining elements provides extreme accuracy of tooth molding.

Abstract: Fluid concrete is provided to apparatus which shapes the concrete into a desired form and may stack the finished products for removal by an operator. A concrete receiving portion of the apparatus holds the fluid concrete and discharges selected amounts thereof into a vertically open mold. The mold and the fluid concrete therein are supported during filling by a forming table. A compaction member is inserted into the mold to distribute and compact the fluid concrete therein, after which the mold may be removed from the table and held for vertical movememt by a mold carrier. Withdrawable support plates at the bottom of the mold support the shaped product therein after the mold has been removed from the forming table, with these support plates being selectively withdrawn to allow release of the shaped product from the bottom of the mold. A shaped product stacker is provided beneath the mold in position to receive shaped products released therefrom, and to stack a plurality of such products.

Abstract: The specification and drawings disclose an apparatus for permitting molding of components such as turbine blade assemblies and the like without the use of complex multipart molds. The disclosed apparatus comprises first and second mold halves carried by cooperating platens for relative movement toward and away from one another along a path. A connecting assembly is provided for attaching the first mold half to its respective platen in a manner which permits it to have free movement in directions perpendicular to the path and rotary movement about an axis parallel to the path. Additionally, a control assembly is provided to cause the first mold half to undergo predetermined transverse and rotary movement during movement along the path toward and away from the second mold half.

Abstract: Apparatus for producing molded objects from foamable plastics in which a bipartite mold is secured to two movable clamping plates. One of the clamping plates is movable through at least an angle of 180.degree. from a parallel position with respect to the other clamping plate.

Abstract: A molding apparatus for producing pellets from a fused material such as molten lead. The mold is characterized in that in use it is submersed in and then closed while in the molten mass. Thereafter, the closed mold is removed from the melt, cooled to set the casting, opened, and the pellet released. The apparatus obviates the pouring of hot molten metal into a gated cavity. Additional important features of the assembly include a novel camming lever which ensures complete and positive closure of the mold, and an annular arrangement of guide bars or ribs which extend tangentially from an outer edge of one of the mold elements to facilitate the alignment and positive seating and sealing of the mold halves when the mold is closed.

Abstract: A horizontal stack foundry molding machine having opposed high pressure horizontally aligned rams adapted to close and then move into the open ends of a mold box filled with sand to make a high quality sand mold, such box being formed by opposed L-shape parts, the L-shape part forming the lower side of the box being horizontally movable after the rams have been retracted to shift the mold formed in the box from between said rams to a position in alignment with a pouring conveyor, a pusher being provided to move such mold from the movable L-shape part onto the pouring conveyor into juxtaposition with previously formed molds to form the horizontal stack.

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.