Abstract: A concrete finishing assembly includes a plurality of rails that each has a guide surface. A plurality of couplers each releasably engages a respective pair of the rails for attaching the respective pair of rails together. In this way the plurality of rails defines a border to surround a shower floor. A cylinder is provided and the cylinder can be inserted into a drain in the shower floor. A trowel unit is provided that has an adjustable length and the trowel unit is attachable to the cylinder. The trowel unit is slidable along the guide surface of the plurality of rails that defines the border. In this way the trowel unit can smooth concrete on the shower floor at a predetermined slope for draining water into the drain.

Abstract: The disclosure presents a reconfigurable composite floor formwork which defined by a plurality of interlocking fiberglass panels formed into profiles which may be moved and adapted to provide a concrete form for a floor or ceiling. All of the components in a preferred embodiment are formed of a fiberglass material.

Abstract: A stripping corner for an inside form, such as for forming the inside corner of an elevator core in building construction for pouring concrete, is provided that includes a powered actuator that forcibly collapses the perimeter of the inside form, particularly the inside corners of the form, to allow displacement of the inside form from the formed concrete surface to strip the inside form from the concrete.

Abstract: Method for manufacturing a composite fiber component (1) the method comprising the following method steps: forming a moulding core (4) comprising a hollow profile (15) made of segments (16a . . . d) in order to establish an external geometry of the moulding core (4), wherein the segments (16a . . . d) of the moulding core (4) each extend in the direction of the longitudinal axis of the moulding core (4) and are each constructed so as to be pivotable about an axis running in the longitudinal direction of the moulding core (4), between a folded position (A), and an unfolded position (B) of the hollow profile (15) of the moulding core (4), wherein the segments (16a . . . d) are constructed so as to be coupled to one another via connections (18a . . . d, 19a . . .

Abstract: A multi-piece interconnected body for use in at least structural support and/or in creating internal cavities for an improved strength-to-weight ratio in a variety of structures is nestable prior to its assembly and use. When assembled, the device preferably forms a generally spherical and hollow body, with (1) one or more ribs or similar structural support network associated with and/or integrally formed in the body; (2) at least one latch mechanism to help hold the pieces in a desired assembled relationship with each other; and (3) a hinge or other interconnecting element that facilitates nesting and/or stacking of a plurality of the bodies with each other prior to assembly, association of the multiple parts of each body with each other prior to assembly, and ready repositioning of those parts into a desired assembled position.

Abstract: Method and apparatus for casting a concrete product with a substantially horizontal slipform casting process, wherein the concrete mix is fed at least in one step through a limited cross-section moving progressively along with the cast, whereby the height of the product forming part (1) is changed during the cast. The invention also comprises a product forming part (1) having an adjustable height.

Abstract: A 360° tool for making a one-piece composite tubular structure, such as a skin of an acoustic liner, is adjustable between a molding position and a non-molding position. The tool includes a base, a fixed segment mounted to the base, first and second doors hingedly connected on either side of the fixed sector, and third door hingedly connected to the second door. The third door has a circumferential extent that is less than one-fourth that of either the first or second door. Sealing members are provided between the doors. Collectively, the fixed sector, and the first, second and third doors have a predetermined shaped surface that corresponds to a portion of the contour of the tubular structure to be formed. After composite material is applied on the outer surfaces of the fixed sector and the doors, a vacuum bag is formed to surround the composite material and also the joint areas on the inner surface of the tool. The entire tool may be placed in an autoclave for curing.

Abstract: A molding apparatus can include a primary mold, a stripper, and a swinging member. The swinging member can comprise a molding surface defining an undercut portion of a molded item. The swinging member can directly contact or attached to the stripper and the primary mold. To facilitate removal of a molded item, the swinging member can withdraw through a hole in the primary mold as a direct result of a motion of the stripper to pull the molded item off the primary mold. The molded item can then be easily removed.

Abstract: A method and apparatus for casting concrete elements with varying, determined length, equipped with one or with a plurality of longitudinal hollow cores, by means of a slipforming apparatus. The apparatus is movable with respect to the bed (2), said apparatus comprising forming members (10) for forming hollow cores. The mass is fed in the first step to the portion of the slab below the hollow cores, and in the second step the hollow-core forming members being brought onto the said portion of the slab and mass is being fed between the forming members and onto them. The forming member (10) for forming a hollow core comprises an attachable extension part (22). The height of a hollow core is changed by changing the extension part of the hollow core forming member.

Abstract: A 360° tool for making a one-piece composite tubular structure, such as a skin of an acoustic liner, is adjustable between a molding position and a non-molding position. The tool includes a base, a fixed segment mounted to the base, first and second doors hingedly connected on either side of the fixed sector, and third door hingedly connected to the second door. The third door has a circumferential extent that is less than one-fourth that of either the first or second door. Sealing members are provided between the doors. Collectively, the fixed sector, and the first, second and third doors have a predetermined shaped surface that corresponds to a portion of the contour of the tubular structure to be formed. After composite material is applied on the outer surfaces of the fixed sector and the doors, a vacuum bag is formed to surround the composite material and also the joint areas on the inner surface of the tool. The entire tool may be placed in an autoclave for curing.

Abstract: A 360° tool for making a one-piece composite tubular structure, such as a skin of an acoustic liner, is adjustable between a molding position and a non-molding position. The tool includes a base, a fixed segment mounted to the base, first and second doors hingedly connected on either side of the fixed sector, and third door hingedly connected to the second door. The third door has a circumferential extent that is less than one-fourth that of either the first or second door. Sealing members are provided between the doors. Collectively, the fixed sector, and the first, second and third doors have a predetermined shaped surface that corresponds to a portion of the contour of the tubular structure to be formed. After composite material is applied on the outer surfaces of the fixed sector and the doors, a vacuum bag is formed to surround the composite material and also the joint areas on the inner surface of the tool. The entire tool may be placed in an autoclave for curing.

Abstract: A construction component is provided comprising a set portion, a hinged portion, and a hinge. The construction component defines an extruded cross-sectional profile defining a panel forming face configured such that an un-cured material may be cured against and subsequently released from the panel forming face in a substantially unobstructed manner. The hinge couples the set portion and the hinged portion such that the hinged portion is movable about the hinge between an engaged state and a disengaged state. The set portion and the hinged portion cooperate to define at least a portion of the panel forming face. The component can be configured such that movement of the hinged portion from the engaged state to the disengaged state reveals a component securing surface of the construction component.

Abstract: One embodiment includes a method including providing a first portion of a product, the first portion of the product having a body and a flange extending therefrom; and casting a material around at least a portion of the flange to enclose the same and to provide a second portion of the product and wherein the at least the portion of the flange is constructed and arranged to provide frictional damping of the product.

Abstract: A hand-held void forming device, including a handle having two handle elements moveable relative to each other; and a void forming portion having two void forming elements moveable relative to each other, the void forming portion being operatively connected to the handle whereby movement of the handle elements relative to each other moves the void forming elements relative to each other.

Abstract: A void former comprises a core assembly having at least two body members. The body members are removably coupled together to define the desired shape of a void to be formed in a concrete slab. After the void has been formed in the concrete slab, the body members may be selectively removed from the void.

Abstract: Elongate bodies for use in providing architectural and structural features in pre-cast panels are provided. The elongate bodies may-comprise a cross-section comprising a set portion, a hinged portion, and hinge. The set portion and the hinged portion are configured to define an engagement. The hinge couples the set portion and the hinged portion such that the hinged portion is movable about the hinge to an engaged state and disengaged state. Methods of using the elongate bodies to form pre-cast panels are provided, and pre-cast panel forming systems are provided. It is emphasized that this abstract is provided to comply with the rules requiring an abstract which will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that is will not be used to interpret or limit the scope or meaning of the claims. 37 CFR 1.72(b).

Abstract: The side walls of a mold have recesses in each of which is mounted a mold core for forming depressions on the outer side of a concrete block which is to be produced in this mold. The mold cores are pivotally supported around a horizontal axis which is parallel to the mold walls on the outer side of the mold. A sloping cam slot on each mold core is used to pivot the mold cores into the mold cavity defined by the mold walls and then back into the recess. The inner edges of a recess closely fit the mold core and function as strippers which self-clean all surfaces of the mold core which have come into contact with the concrete when the mold core is pivoted back into its recess. As a result, time intervals for cleaning the mold cores are greatly lengthened and a clean and smooth surface of the finished concrete block is insured.

Abstract: A system and method of cooling glassware molds by directing liquid coolant to the blank or blow mold halves of a glassware forming machine through an enclosed pivotal rotary union-type structure. A coolant manifold is carried by each pivotal mold arm, and communicates with coolant inlet and outlet ports at the lower end of each mold part. The manifold is connected by a floating shaft seal and a rotary union assembly and a crank arm to a coolant source and coolant return in the section box of the associated machine section. Each pivotal connection—i.e., between the section box and the crank arm, between the crank arm and the rotary union assembly, and between the rotary union assembly and the floating shaft seal—comprises a bi-directional rotary union for feeding liquid coolant to the manifold and mold parts, and returning coolant from the manifold and mold parts.

Abstract: A reinforced box-like structure for forming a void area in a concrete formation. The structure includes a bottom panel having a plurality of spaced apart, parallel base partitions and a top panel having a plurality of spaced apart, parallel top partitions. The base partitions extend across the bottom panel and in a direction normal to the bottom panel, and the top partitions extend across the top panel and in a direction normal to the top panel. Each of the base partitions and top partitions include a plurality of double-thickness walls with a plurality of slots therein and flat top edges between the slots. The structure is assembled by superimposing the top panel over the bottom panel such that the base partitions extend transversely relative to the top partitions.

Abstract: A form for establishing an opening in a wall poured between a first wall form and a second wall form in a wall. In one embodiment the form comprises a substantially rigid body having an outwardly extending portion at each end for forming a recess adjacent the opening and having a supporting member for suspending the form from the wall forms. In an alternate form of the present invention, the wall form is defined by a collapsible wall form that folds inwardly from the poured wall's opening to allow for the easy removal of the form from the wall. In another embodiment of the present invention the form has an adjustable member for changing the depth that the form extends from the top of the wall forms.

Abstract: A leak resistant hinge is provided for pivotally connecting adjacent concrete form sections to permit angular adjustment and movement of the form sections. The hinge includes first and second L-shaped hinge brackets which pivot about a pivot member to which both brackets are mounted. A gasket member is situated on the exterior of the first and second hinge brackets to seal the hinge while simultaneously permitting the first and second hinge brackets to pivot about the pivot member. Each hinge bracket is mountable to a respective adjacent concrete form section to permit adjacent form sections to pivot as needed to obtain the desired concrete form configuration.

Abstract: The present invention is embodied in a duct assembly system for the shaping and support of skins against a bulkhead, including an articulating skin expanding member conforming, in an extended position, to a cross section of the bulkhead, and a support means attached to the expanding member for insertion of the expanding member into the skins and alignment of the expanding member adjacent to the bulkhead.

Abstract: An articulated core blade assembly provides improved release of undercuts and similar structures in mold cavities. The articulated core blade assembly includes a retainer secured to an ejector plate, a lifter which moves the product and releases the undercut and a pivot arm which couples the lifter to the retainer. A first knuckle joint couples one end of the pivot arm to the retainer and a second knuckle joint couples the other end of the pivot arm to the lifter. The knuckle joints provide limited pivoting motion about parallel, spaced-apart axes. The articulated core blade assembly may be utilized in a broad range of injection molding machines utilizing plastics, metals and other injection molded materials.

Abstract: An injection-molding tool for producing pipe fittings with an internal groove has bead-forming segments of the core alternating with one another on respective bell crank levers at alternating bell-crank levers being fulcrummed at fixed locations on a core sleeve while the other bell-crank levers are fulcrummed on a ring movable axially on the core sleeve. The actuator is a hydraulically or pneumatically moved actuating sleeve having grooves or slits receiving radial arms of the levers with abutments or end surfaces axially staggered so that one group of segments is retracted inwardly and axially first to allow the second group of segments to be swung inwardly.

Abstract: Forms for a cylindrical wall of poured concrete are made of plywood sheets nailed to horizontally-spaced beams, to which are clamped transversely arranged walers. The walers are assembled in strings and the string are in parallel spaced relationship. The walers in a string are hinged together at the sheet-facing side of the walers and at least one of two adjacent waler sections is curved. Screw assemblies are mounted in brackets located at the ends of the walers but on the sides facing away from the sheets, and are operable to push or pull the walers out of alignment so that they can be pulled or pushed into a ring shape and, in so doing, bend the sheets into generally cylindrical shapes. When the sheets are raised on end, with the beams disposed vertically they provide the inside and outside wall forms for receiving concrete, for example, poured between them to form an annular cylindrical wall for a tank or the like.

Abstract: A locking hinge mechanism for concrete forms includes parallel hinge strips connected together by hinges positioned at intervals along the length of the strips. Each hinge includes provision for a wedge lock which, when fully inserted, positions the hinge strips at a secure 90.degree. angle. The hinge strips are spaced apart from the juncture of the strips, when arranged at the 90.degree. angle, so that concrete flashings do not clog the hinge. The hinge strips are in turn affixed to the side rails of the joining concrete forms to form a 90.degree. angle, such as for a column form arrangement.

Abstract: Apparatus and method for forming a three dimensional injection molded article having a pair of passageways extending therethrough and with a locking indentation in each passageway using first and second mold parts each having open ended cavities having an end wall and a plurality of sidewalls formed therein wherein a pair of fixed arms are mounted on the end wall of the first mold part so that they are spaced from each other and each of the sidewalls, have portions extending out of the open ended cavity and have contoured surfaces and wherein a pair of movable arms are mounted on the end wall of the second mold part for rotation about fixed axes and are spaced from each other and from each of the sidewalls and wherein each movable arm has a contoured surface adapted to be moved into a continuous contacting relationship with the contoured surface of one of the fixed arms and when in the contacting relationship to provide protruding portions to form said locking indentations.

Abstract: A primary forming member is associated with a secondary supporting structure to allow rapid construction of elongate concrete structures of uniform cross-section by removing the primary forming member before the concrete mass supported by the secondary supporting structure is set or self-supporting. The primary forming member provides plural spaced forming arches, foldable for transport, and supported for vertical motion on a carriage providing for horizontal motion along the axis of symmetry of the formed structure. The primary forming member supports a plurality of spaced support arches of the secondary supporting structure with a plurality of cross elements therebetween to support rigid panels that create a forming surface for plastic concrete and remain as a part of a formed concrete structure to provide insulation. The forming system forms a self-supporting arched concrete surface with spaced depending arches by being sequentially moved axially therealong.

Abstract: A molding for the retention of a tie during the concerning of a precast concrete part is provided. In the removal of the molding from the recess of the precast concrete part, the molding is drawn off from the tie, so that the tie head projects into a recess in the precast concrete part. So that it can be pulled out of the precast concrete part easily, the molding has at least one lifting-out part which is preferably in the form of a rope loop and which, on the lifting-out side facing away from the precast concrete part, can be bent into the plane of the lifting-out side or raised outward in order to pull out the molding.

Abstract: Methods of manufacturing a modular, monolithic, integrated, multi-layered, mold building structure including the steps of constructing a dismantleable mold having an outer rigid matrix and an inner inflatable plug, wherein the inside dimensions of the matrix correspond to the outside dimensions of the structure and the outside dimensions of the plug correspond to the inside dimensions of the structure, placing high strength fibers between the plug and the matrix, injecting hardenable material between the matrix and the plug, curing the hardenable material into a hard shell, removing the matrix, deflating the plug, and installing walls, doors or windows. The structures may be joined together on-site in various combinations and configurations to create different types and styles of buildings.

Abstract: An injection molding apparatus is used to line flanged pipe elbows. The pipe elbow is clamped by the flanges to two pivotted platens, one of which has a curved mandrel to shape the inside of the elbow lining.

Abstract: There is disclosed a formwork for round or polygonal constructions with a formwork face having an adjustable curvature or circumference. The formwork has a chain of booms which are spaced apart from the formwork face and are composed of individual boom portions. The boom portions can be pivoted relative to one another and can be fixed in selected angular positions when the adjustment of the formwork face is completed. The pivot axes for the boom portions are not located at the boom portions themselves but are transposed into the plane of the formwork face so that the formwork and the formwork face are adjusted in assembled condition of the chain of booms. The boom portions, which are spaced apart from the joint axes have couplings which are adapted to be detachably connected to one another and are disposed along arcs with centers of curvature on the respective joint axes. The couplings can include overlapping plates with openings through which locking keys can be inserted.

Abstract: Injection moulding core for pipe bends, with at least one straight pipe terminal portion, wherein the bend core is divided in various segments (a) which are preferably wedge-shaped when viewed sideways and which are connected by appropriate elements preferably mushroom-shaped projections (c) to form a chain so that the medial line (b) of the chain of segments may form a straight line, and which are mutually fixed by appropriate elements, preferably centering pins (d) or adjusting springs and/or an edge overlapping the various segments (a), in order to avoid any displacement and torsion, and which comprise one or a plurality of holes (e) through which pass one or a plurality of traction elements, preferably metal cables (f) which are connected to the last segment (a) of the chain, whereas they are connected to displacement elements (i) at the other end of the chain by means of a core (h) fixed preferably to that end of the chain and provided for the straight pipe terminal portion.

Abstract: A mould which is used for the production by injection moulding of fittings which have an inner annular groove includes a divisible outer mould, a mould core and a mould ring. The mould core has a plurality of segments which can be folded together. In order to ensure with absolute reliability that the fitting does not remain clinging to the mould ring during removal of the fitting from the mould, the mould ring is connected to the mould core and is withdrawn together with the mould core from the fitting.

Abstract: An improved sheathing for use as a covering on a polygonal container having a plurality of adjustable support members for supporting the sheathing thereon. The sheathing comprises at least two adjacent pivotally connected panels having a vertical joint therebetween formed by an offset edge of one panel overlying an adjacent edge of the other panel. The panels include a mechanism for adjusting the angle between the panels comprising a pair of pivotally connected plates, each of the plates being pivotally connected to a respective one of the panels, and an adjusting screw threadedly mounted to the plates and extending towards the joint.

Abstract: A mold is provided for use in the production of concrete pipe sections. The mold has an inner mold part including an arch-shaped mold member; a pair of substantially L-shaped side mold members each flexibly connected to an adjacent end of the arch-shaped mold member and extending along the side portions of the mold and with parts extending inwardly across the bottom portion of the mold, and a separable mold member detachably connected between the inwardly extending parts of the L-shaped side mold members. The parting of the mold from the product is accomplished by removing the separable mold member, and urging the L-shaped side mold members inwardly. Provided also is a mold for use in the production of mitred concrete pipe sections comprising an upper inclined pipe and a lower inclined pipe which are connected to each other at their mitred surfaces. A mold is also provided for producing concrete pipe elbows having partition plates adapted to produce elbows of various arcuate sizes.

Abstract: A concrete ramp is, in cross section, in the form of an inverted U and is made in sections. The form includes a base the upper surfaces of which are inclined relative to the horizontal at an angle wanted for tread surface of the ramp. A pair of inner and outer side walls are provided for each side of the base and then are shaped and dimensioned so that their upper edges are horizontal, the height of the inner walls less than that of the outer walls. The walls of each pair are hingedly connected to the base in a manner enabling the outer walls to swing outwardly and the inner walls to swing inwardly. Power operated devices supported by the base are operable to hold the inner walls vertically or to pull them inwardly. A plate is supported by the inner walls in a manner permitting it to be lowered or raised as the inner walls are swung into or out of their operative position.

Abstract: What is proposed is an inwardly articulated form assembly for forming concrete core-wall structures having a rectangular shape in which a primary form structure having fixed seamless corners is presented to the wet concrete; after the concrete has set, a secondary support structure which effects a compound movement when activated by a lever assembly connected thereto causes the primary form to articulate inwardly in a progressively centripetal movement towards the interior of the core-shaft about vertically extending double hinged seams in the wall faces of the primary form near respective corners thereof.

Abstract: What is proposed is an inwardly articulated form assembly for forming concrete core-wall structures having a rectangular shape in which a primary form structure having fixed seamless corners is presented to the wet concrete; after the concrete has set, a secondary support structure which effects a compound movement when activated by a lever assembly connected thereto causes the primary form to articulate inwardly in a progressively centripetal movement towards the interior of the core-shaft about vertically extending double hinge structures connecting parts of the secondary support structure near respective corners thereof.

Abstract: A form unit to cast the inside surfaces of a corner of a concrete structure has a pair of form panels disposed generally perpendicular to each other and an elongated corner member disposed between the adjoining edges of such panels with an actuator having relatively movable parts including a first part connected by parallelogram linkage to each of the form panels and a second part connected to the corner member so that when the actuator parts are moved together the form panels are butted against the outer edges of the corner member and when the actuator parts are moved apart the form panels are separated from the corner member. Holding means retains the corner member against displacement toward the panels while the form panels are being stripped from the hardened concrete and latch means holds the form panels against relative movement while the corner member is being stripped.

Abstract: A concrete forming structure including a collapsible form having at least one form panel section and a rigid corner adjacent thereto and with the panel section having a forming face. A two-way hinge filler structure between the section and the rigid corner. The hinge filler structure including a series of hinge plates with a pair of the hinge plates being attached to the form. The hinge plates including a pair of spaced hinges joining the hinge plates in hinged assembly together and with the hinges lying in a plane common to the forming face of the section. Means is provided for holding the panel section in a predetermined position to facilitate the pouring of the concrete and with the means being releasable. The panel section being pivotal on the hinges to effect disengagement of the panel section from the poured concrete.

Abstract: A concrete forming structure including a collapsible form having at least one form panel section. The section having a marginal flange structure mounted thereon at one side and vertically spaced slots on the marginal flange structure for receiving wedge bolts at selected intervals. A one-way escape hinge structure for the form including a pair of first and second hinge plates, the hinge plates including a hinge securing said plates at one of their ends. The first of said hinge plates having vertically spaced wedge bolt slots spaced at intervals generally coinciding to the spacing of the slots on the marginal flange of the panel section. Locking pairs of wedge bolts each having an enlarged end are provided. One wedge bolt of each pair extends through the cooperating slots in the first hinge plate and the marginal flange structure of the panel section with its enlarged end resting against the hinge plate.

Abstract: A rotatable mandrel for making cylindrical molded articles has a plurality of aligned identical and collapsible cylindrical mandrel sections supported upon a cantilevered shaft, the cylindrical sections having a truss supported relatively thin exterior wall and retractable segment to permit circumferential contraction of the wall, the composite segmental cylindrical segment being supported by a central cantilevered rotatable shaft in turn supported by a rotatable bearing assembly on a vertical support tower, the collapsible contraction of the composite cylindrical mandrel being controlled by internally mounted power units connected to the retractable segment and the other portions of the cylindrical mandrel sections.

Abstract: For casting a concrete inside corner wall structure, the corner is defined by a corner member to extend lengthwise of the corner with the adjacent edges of a pair of form panels that are disposed generally perpendicular to each other being butted against the outer edges of the corner member and a control unit is interconnected with the form panels and the angle member to retain this relationship between the panels and angle member incident pouring and hardening of the concrete. The control unit has actuator means associated therewith operable to move the panel edges into abutment with the outer edges of the angle member prior to concrete pouring and to strip both the form panels and the angle member from the hardened concrete structure.

Abstract: Apparatus and method for constructing a modular concrete shell housing unit in which complementary counterpart form assemblies are detachably connected on a supporting concrete floor slab at their inner adjacent longitudinally extending framing members, the form assemblies having first means for rolling movement longitudinally on the floor slab and second means for elevating, leveling and lowering the framing and superstructure of the form assemblies from and to the floor slab and for rolling movement of the assemblies transversely thereon toward and away from each other. An inner wall form and roof form are respectively movable and fixed components of each form assembly, the inner wall form being translatable laterally outwardly and inwardly with respect to the framing structure. A pivoting roof edge plate section is hingedly mounted to and at the lateral distal edge of the roof form.

Abstract: In order to form in a concrete body during casting thereof a part-spherical recess around the head of a pickup bolt having a stem embedded in the body, an apparatus is employed comprising a pair of like elements each having an outer surface complementary to a respective half of the inner surface of the recess. These elements are formed with respective halves of a seat that complementarily surrounds the bolt head and the stem in the recess. A bridge is provided with a pair of pivots that define pivot axes for the respective elements, and a manipulating member is rigidly connected to this bridge.

Abstract: A cast concrete form work apparatus for constructing bridge beams in which form work partitions 5, 6 and 10, 11 having work surfaces 6, 12 are tangentially adjoined by a tube member 1 and adjustable apparatus is provided to hold in a fixed angular relation two work partitions by use of a clamping bar 13 and clamp screw 14 extending through a slot 16 together with a groove member 2, 3, 4 having a seal 21. Complementary constructions assembled as a pivotal arrangement provide a form work for constructing bridge beams with an upper surface disposed for use as inclined roadway.

Abstract: A mold for molding a boot or similar footwear from an elastomeric composition and simultaneously lining the footwear with a fabric, has first and second shells each having a cavity which complements the cavity of the other to form a large cavity which corresponds to the upstanding sides of the footwear and a third shell which has a cavity corresponding to the sole thereof. The three shells are assembled together with a rigid core member enclosed therein which defines the inside of the boot. The core member has an elastically expandable casing. Conduits are arranged in the core member for conveying a fluid under pressure to expand the casing.

Abstract: A method and structure in which a Y- or V-shaped trench is dug in the ground for spatially receiving a smaller, complentarily shaped form that is supported in the trench by re-enforcing rods or the like that remain in the set-up concrete when the form is removed. The form has retractible side walls to facilitate removal from the finished trough and further includes removable gutter and drain means that are left as integral parts of the trough when the form is removed.

Abstract: A building construction system uses a mold set up at a construction site so that the external part of the mold is spaced clear of the internal part. Building elements including those which are functional in the construction operation are arranged around the internal mold part. Such functional elements include connecting rod anchorages around the lower region of the mold, and the like. The external mold part is moved into position near the internal mold part, and the mold is filled to form a casting. A lifting frame is arranged over the mold and adjustably connected to the connecting rods. Then the external mold part is moved away to release the casting, and the frame is lifted to raise the casting up over the mold for movement to a building site near the construction site.