Abstract: Hydrofoil assemblies that can be attached to a board used for watersports are disclosed herein. A hydrofoil assembly may include, for example, a mast a coupleable to a fuselage at a lower portion of the mast and coupleable to a board at an upper portion of the mast, and front and rear wings coupleable to the fuselage. A hydrofoil mast may include, for example, first and second composite sections bonded together to form a hollow load-bearing mast structure. Leading and trailing elements made of a material that is softer than the composite mast structure may be adhered to the mast structure to complete a hydrodynamic profile of the mast.

Abstract: A cement block mold which includes a base, a top cap and a flexible sidewall strip. The base has an upstanding peripheral sidewall with a single slotted engagement. The top cap has a downwardly extending peripheral sidewall with a single slotted engagement. The flexible sidewall strip having a first engagement at a first end and a second engagement at a second end. The sidewall strip is secured in position by bending the sidewall strip to form one of a circle or an oval, and then engaging the first engagement and the second engagement with the slotted engagement of the base, and then engaging the first engagement and the second engagement with the slotted engagement of the top cap.

Abstract: A molding unit for forming and cooking meat, comprising a single recipient-shaped bottom die a concavity of which faces upwards and is destined to contain meat, and a single cover aligned with a mouth of the concavity of the bottom die, which cover is joined to the bottom die and positioned below the bottom die, such as to be destined to close a further mouth of a further concavity of a bottom die of a molding unit which is identical and positioned below the molding unit.

Abstract: Mold system (1) for manufacturing cardboard-based container, comprising movable mold half (10) and stationary mold half (20) located opposite one another. Movable mold half (10), movable with respect to stationary mold half (20), includes at least a core plate (4), a plate-like seal ring (5) movable with respect to the core, and collar ring (6). Stationary mold half (40) includes at least a mold plate (7) provided with a mold cavity (71) and a seal surface (7a). In the mold system (1), an insert (720) can be supported on and detachably attached to the base (71b) of the mold cavity (71) reducing the depth H of the mold cavity by its height h. Container (500) comprises bottom (57) pressed from cardboard blank and wall (59) connected to the bottom and plastic rim (50) connected to the upper edge of the walls.

Abstract: The present invention relates to an adjustable slump mold for molding a clay slab into a ceramic object. The mold includes a plurality of elongate members. The mold also includes a plurality of connectors connected to and extending from first ends of the elongate members, respectively. Each connector is shaped to slidably receive an adjacent one of the elongate members. The elongate members are thereby slidably connected together via the connectors. The elongate members so connected together form an adjustable mold shape.

Abstract: A form for creating a pattern in uncured concrete during a vertical column casting process includes an end wall and at least one side wall, extending from an edge of the end wall with the side wall and end wall cooperatively defining a corner therebetween. A pliable liner is attached to the end wall and the side wall and operably joins the side wall to the edge of the end wall to define a mold cavity. At least one patterned surface is formed on or in the pliable liner and is operable to form a corresponding pattern into concrete disposed in an uncured form in the old cavity. A notch is formed in the pliable liner and extends along the corner and forms a pivotable joint between the end wall and the side wall to facilitate removal of the form device from about the concrete after the concrete has at least partially cured.

Abstract: The invention provides a reusable formwork for forming a polygonal upright concrete column using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a forming cavity between the panels adapted to receive concrete therein. Hooping means are used to hoop the panels forming the cavity.

Abstract: The invention relates to an adjustable stair forming apparatus, adapted to form a flight of stairs of a settable material. The flight of stairs including a series of treads interconnected by intermediate risers. The apparatus comprises, a frame to support a series of forming units provide a forming surface. Each forming unit, includes a tread defining formwork that includes a rectangular shaped tread forming surface, slidably and pivotally mounted to the frame from or toward a first major edge of the tread forming surface. The forming unit also has a riser defining formwork that includes a rectangular shaped riser forming surface with a first major edge adjustably mounted from or toward the opposite major edge of the tread forming surface. The riser forming surface at least in part co-extending with the tread forming surface in a stair width direction.

Abstract: The invention provides a retaining device for assembling two panels together. The device has a support and first and second pairs of spaced-apart parallel walls extending along the support and projecting outwardly therefrom for providing first and second holding channels extending angularly to each other, each channel being adapted to receive an edge of one of the panels therein in a snugly relationship to allow assembling of the two panels. The invention also provides a formwork for forming a polygonal upright concrete structure using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a forming cavity between the panels adapted to receive concrete therein. There is also provided a packaging assembly for packaging goods using a plurality of retaining devices and a plurality of panels arranged with the retaining devices for providing a protecting cavity between the panels adapted to receive the goods therein.

Abstract: An above ground water storage device includes a plurality of modular walls coupled together in series to form a substantially continuous perimeter. Each of the plurality of modular walls includes a wall panel that is inclinable with respect to a horizontal orientation, and a support base that is coupled to a portion of the wall panel. A liner covers an internal side of the plurality of modular walls and an area encompassed by the continuous perimeter. At least one modular corner wall is positioned with the plurality of modular wall panels to form a corner in the substantially continuous perimeter. The at least one modular corner wall has an angled side with an angle corresponding to the inclined angle of an adjacent modular wall.

Abstract: The present invention concerns a mold table for food products comprising at least one longitudinal conduit that can be closed by a cover. Each conduit has a variable cross section that defines at least one cavity that forms a mold for the food products.

Abstract: The invention relates to a mold for the manufacture of curved insulating panels, which comprises an upper half-mold (2) and a lower half-mold (3) opposite each other. The structure of both said half-molds is formed by a respective chain of modular frames (5) hinged together and having a pyramidal or similar shape, which are connected at their tips by actuators. These actuators, when they are operated, vary their length and cause the frames to rotate with respect to each other, thereby curving the surface of the half-molds acting on the panels to be manufactured. In this way it is possible to produce panels with various radii of curvature using a single mold. The invention also includes a press for use with the abovementioned mold.

Abstract: A customizable skirt-forming member is disclosed, for use in high stress acrylic tub formation operations. The member generally has a rigid forming wall, at least one adjustable wing hingeably associated with the forming wall, and means for altering the pitch of the at least one wing, relative to the sidewall, so as to simultaneously alter a hinge angle therebetween. The member allows for customized, angled formed front tubs to be formed, while ensuring that the stresses of system operation do not alter the intended angles. A toggle-nut structure is additionally disclosed, which ensures the maintenance of the relative positions of the angled walls of the skirt-forming member.

Abstract: A casting tool for forming precast concrete wall sections. A base is disposed generally in a horizontal plane and has an upper surface. A pair of opposing sidewalls are disposed proximate the upper surface. Each of the sidewalls has a first position in which the sidewall is located substantially in a vertical plane. First and second opposing bulkheads are disposed proximate the upper surface, each having a respective first position in which the bulkhead is located substantially in a vertical plane. The bulkheads are arranged to abut the pair of opposing sidewalls so that the inner surfaces of the sidewalls, the bulkheads, and the upper surface of the base define a form for receiving concrete to make the precast concrete wall section. The first bulkhead is configured for movement so as to vary a first dimension of the form, and thus the dimension of the concrete wall section.

Abstract: A precast safety end for use with culverts on highway, driveway, and road drainage crossings has a base having a depending flange at its outer end and an upright wall at its inner end, and opening in the wall to register with the opening in an abutting pipe culvert. Upright wings on each side of the base connect with the upright end wall. The side walls taper downwardly from the upright end wall to the end of the base. The side walls have outwardly protruding wings on either side to prevent erosion and overgrowth of grass.

Abstract: The invention relates to a set of baking moulds for food products such as hams, including a plurality of moulds mounted on a support frame (5, 6), each mould comprising a trough (2) with a generally U-shaped transverse section in order to form a bottom (13) and two side walls (4). The top edges of the side walls (4) form folded flaps (7), the adjacent flaps of the two troughs (2) being connected together.

Abstract: An improved system and methods for forming foundations, walls, buildings and other structures having one or more walls made of concrete or other pourable, hardenable materials. The system uses substantially rigid forming panels and is “open” in that forming panels from a variety of sources can be utilized in the system with limited (if any) changes or alterations to the components used in the system. Such panels particularly include insulating foam panels, and also include other substantially rigid panels of other materials which may provide additional insulating properties. The system and methods provide wall tie rail and corner assemblies that are adaptable for use in a variety of construction applications using forming procedures and techniques readily adaptable from conventional forming system construction and assembly procedures.

Abstract: A casting tool for forming precast concrete wall sections. A base is disposed generally in a horizontal plane and has an upper surface. A pair of opposing sidewalls are disposed proximate the upper surface. Each of the sidewalls has a first position in which the sidewall is located substantially in a vertical plane. First and second opposing bulkheads are disposed proximate the upper surface, each having a respective first position in which the bulkhead is located substantially in a vertical plane. The bulkheads are arranged to abut the pair of opposing sidewalls so that the inner surfaces of the sidewalls, the bulkheads, and the upper surface of the base define a form for receiving concrete to make the precast concrete wall section. The first bulkhead is configured for movement so as to vary a first dimension of the form, and thus the dimension of the concrete wall section.

Abstract: In order to form a chamfer on an outside corner of a poured concrete structure, a concrete forming system includes a first form panel having an inwardly facing surface and second form panel also having an inwardly facing surface. The first form panel is secured to the second form panel with the inwardly facing surfaces at an angle to one another and the inwardly facing surfaces of the form panels have adjacent side edges for forming an outside corner. A chamfer strip including a body portion and a tail portion is provided for forming a chamfer on the outside corner. The body portion is substantially hollow and has three sides arranged so as to be generally triangular in shape and the tail portion comprises an elongated continuation of one of the sides of the body portion. With this understanding of the concrete forming system, the chamfer strip is formed in such a manner as to permit flexing of the chamfer strip so as to create a seal with the form panels during the pouring of concrete.

Abstract: Making a tire mold by spraying molten atomized metal on a model to form a metal shell and then reinforcing the shell with a resin backing to form a mold segment for the tire mold. Modular shoe container assemblies have replaceable backing members for making different size molds and flat plate spacers for providing different thicknesses of the mold segment. In one embodiment a slide block is used for one side of the cavity whereby a sole plate is eliminated.

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

Abstract: A device for establishing the correct spacing (width and height) between a pair of sheet material elongated form members between which a slurry of concrete is to be poured and, when solidifed, will produce a rigid concrete curb. One form member is to be held in place within a first rigid member with the remaining form member to be held in place by a second rigid member. The first and second rigid members are connected together thereby establishing the width of the resultingly formed curb. Each rigid member includes a pin which is to connect with the inside surface of its respective form member. Once the slurry has been poured between the form members, these pins are to be removed prior to the slurry solidifying. Once the slurry is solidified, the curb form device is to be completely disconnected from the form members with the form members also being separated from the resultingly formed concrete curb.

Abstract: A flexible form is presented. The flexible form may be shaped to produce the desired contour of concrete or other plastic material in the construction of various structures and is held in place by a plurality of positioning brackets. The flexible form is made of two or more parts, an outer part which provides durability and wear resistance and an inner part which provides the desired flexibility and is protected by the outer part. The parts are assembled in such a manner that each flexes independently of the other parts.

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: Injection molding methods and apparatus for the production of casting molds for toric lenses having ballast oriented properly with respect to the cylinder axis of the toric surfaces. A calibrated rotatable ring mechanism is used within the injection molding body, for producing a slot or other alignment means on the lens casting mold at a point which is offset a predetermined number of degrees from the axis of the toric surfaces being formed in the casting mold. When the casting mold containing a newly cast lens is mounted on a precision lathe, the mating of the slot with a permanent ridge on the lathe spud ensures that the mold seats on the lathe at the same established place each time with respect to the position of the cutting tool. The offset between the toric axis and the position of the cutting tool has already been established, and therefore there is no need for the lathe operator to make any measurements or resetting of the cutting tool.

Abstract: A method for variably making tie bar guides usable to guide tie bars within locking system housings having different inner dimensions, which tie bar guides have a body portion including four sides substantially aligned with an opening through the body portion for slidably receiving a tie bar. A mold block defines an opening for the body portion of the guide and receives material in a substantially flowable state. A cylindrical channel is also provided in the mold block along one side of said body portion opening. A semi-cylindrical pin is secured within the channel, which pin is pivoted to open a selected portion of the channel to the mold block opening and thereby extend the mold block opening and contiguous open channel to a selected outer dimension. Further, at least one slot is provided along a second side of the body portion opening.

Abstract: An adjustable corner strip for joining adjacent concrete form panels into a column mold includes spaced diverging wings with slots to retain adjustment screws for adjusting the divergence of the wings, and thus the panels. The corner strip permits easy and rigid squaring of forms. A chamfer strip includes a chamfer face and an integrally formed tail section extending outwardly of the strip and adapted to fit into the channel formed along the mold side rail. The adjustable corner strips bring the chamfer strips into tight mating engagement with the interior surfaces of the mold panels, preventing leakage of cement between the chamfer strips and the mold panels.

Abstract: An adjustable corner strip for joining adjacent concrete form panels into a column mold includes spaced diverging wings with slots to retain adjustment screws for adjusting the divergence of the wings, and thus the panels. The corner strip permits easy and rigid squaring of forms. A chamfer strip includes a chamfer face and an integrally formed tail section extending outwardly of the strip and adapted to fit into the channel formed along the mold side rail. The adjustable corner strips bring the chamfer strips into tight mating engagement with the interior surfaces of the mold panels, preventing leakage of cement between the chamfer strips and the mold panels.

Abstract: An adjustable culvert form facilitates fabrication of rectilinear culverts and skewed culverts that is, culverts having an angular relationship between sidewalls and span. It is particularly useful for the production of three-sided culverts. The form generally defines a parallelogram having low, vertically standing sidewalls which are interconnected at adjacent ends by hinges. The hinges may be either a conventional pair of interleaved pivots coupled by a removable pin or a unique expandable, multiple pin hinge configuration. The form is placed on a smooth horizontal surface such as a previously poured concrete slab, the surface forming the largest continuous surface of the product. The culvert is cast in an inverted orientation. The width and length of the formed product may be adjusted by the incorporation or removal of sidewall panels. Triangular sidewall panels are secured to end adjacent regions of the sidewall panels to form haunches.

Abstract: A fixture for an adjustable mold in which concrete road barrier sections are precast. The mold can be configured to cast symmetrical or asymmetrical sections having a uniform cross section throughout or a cross section that varies uniformly along the length of the section.

Abstract: The mortar cap receives cementitious materials therewithin, such as cement, mortar, and the like, to define a footing for a manhole frame, and has a base frame with a pair of concentric, spaced-apart walls, and an ancillary frame, also with a pair of concentric, spaced-apart walls. The base frame is set within the ancillary frame, and the latter is slidably and vertically displaceable relative to the base frame. The ancillary frame has a plurality of knobs projecting from walls thereof which confront given walls of the base frame, and the given walls of the base frame has a plurality of racks of ribs which confront the knobs. With vertical displacement of the ancillary frame, or a sector of the ancillary frame, the latter is arrestingly held in the displacement due to an interference of the knobs and ribs, and an engagement of the knobs with a pair of the ribs.

Abstract: Apparatus for molding hollow metalwood golf club heads of wax or other material with variations in the lie angle of the neck or hosel relative to the body of the club head, in which two molds with communicating mold cavities are supported for turning of one mold about a pivotal axis to change the angular relationship of the two cavities. The molds have arcuate abutting surfaces coaxial with the pivot for effective meeting relationships in the different positions, the hosel base being slightly oversize to accommodate the displacement, and two core pieces in the molds have part-spherical abutting surfaces, also coaxial with the pivot for effective "kissing off" of the parts. The movable mold is detented in one of eight different positions, in one-degree increments. Another embodiment produces solid-headed irons with selected different lie angles of the hosel, but with only one core piece, which is in the hosel mold.

Abstract: A flexible form for making street and sidewalk curbs uses C-channels such as is utilized in straight portions of street curbs, said C-channels carrying "V" openings spaced regularly evey 6 inches or so, to facilitate gradual bending, such opening being equipped with a U shaped spring which resists the bending and, at the same time, causes a uniform tension along the length of the curve. The V openings are located both in the straight interior part of the curve and in the slanted external part of the curve. The external part of the curve has other V slots vertically placed in the web and spaced one every 5 feet for a curve radius of 12 feet, such V slots correcting the vertical camber of an inclined bent form. The flexible form, once spring balanced, allows the casting of concrete in a continuous fashion.

Abstract: A method for forming a composite door to custom fit a predetermined door opening. A template is formed by spraying a quick hardening foam on a door jam of the door opening. The template is moved a base member of the tool and the base member adjusted to conform to the shape of the template. A mold is formed using the template and base member. Composite material placed inside the mold and on top of the base member forms a door to custom fit the door opening.

Abstract: Apparatus for nest-casting of generally large elements formed of multiple angular surfaces including a side forming element of concrete useful as a mold form together with a spaced repositioned element mounted also as a side forming element for forming therebetween another side forming element of concrete. Successive operations of cast forming and repositioning the side forming element provide new cast forming structures. Also, the repositioned side forming element is essentially constructed and arranged from an assemblage of interchangeable modular structural components some of which are hingedly connected, adjustable in length, and demountable from the assemblage. Heater elements and vibrating energy sources may be severally applied to the apparatus for compaction of the cast material and accelerating the cast process.

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: The present invention has as an object an adjustable mold for the manufacture of concrete elements such as staircases of the type having a straight line extent, of which the treads are perpendicular or not perpendicular to the risers.

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: Apparatus for forming inverts in a manhole base using a single pour or double pour technique. In the single pour technique, the invert is formed simultaneously with the formation of the manhole base using a mold member having a channel-shaped projection defining the invert. Alignment members simply, and precisely, align the mold member having the channel-shaped projection with the members forming the base member sidewall openings to form a manhole base having an invert in precise alignment with associated sidewall openings. In the two pour technique, the manhole base is initially formed. Thereafter, channel invert forms are aligned with sidewall openings by alignment members arranged within the manhole openings to assure precise alignment therebetween, wherein the invert formed within the manhole base by pouring the casting material into the base member forms an invert which is in precise alignment with associated sidewall openings.

Abstract: Molding forms for precast concrete portal assemblies are described. The molding forms include adjustable form surfaces for precasting different shaped portal assemblies from the same basic mold. The molding forms herein are particularly designed for molding portal assemblies for use at either or both end of box culverts which provide passages extending under a longitudinal embankment at skew angles rather than transversely perpendicular to the embankment access.

Abstract: The invention relates to a form for producing concrete rails for rubber-tired vehicles which are guided on a track. In contrast to steel rails, concrete rails no longer bend after production, so that numerous different molds are required for curves, transition curves, super elevations, and the like. This drawback is avoided with the form according to the invention, wherein the form makes it possible to produce both straight rail sections, as well as rail sections having varying curvatures, using the same mold. As a result, the expenditure for rail forms is considerably reduced.

Abstract: An adjustable formwork for forming the corner surfaces of concrete structural members includes a first and a second formwork unit. Each formwork unit extends transversely of the other and has a surface which forms one of the concrete surfaces of the concrete structural members and these surfaces define a corner junction line about which the formwork units can be pivotally adjusted relative to one another. One of the formwork units is provided with a circular-arc shaped guide slot and the other has a pair of spaced guide pins secured to it with the pins being movably guided in the slot. The center point of the arc of the slot is located on the corner junction line. The interengagement of the pins with the slot affords a link type guidance between the formwork units. As a result, forces are transmitted at the corner junction line only in the assembly state so that the line lies practically in the plane of the formwork surface which define the concrete surfaces.

Abstract: A packaging system for encapsulating an article within a solid foam material. An article to be encapsulated is supported on a base. A wall enclosure is disposed on the base to form a mold cavity. At the top of the base and above the article to be encapsulated is a cover. Expandable plastic foam in liquid form is introduced into an orifice of the base and the expandable plastic foam advances through a passageway in the base and is discharged from an orifice in the base into the mold cavity to encapsulate the article. The foam material in liquid form solidifies into a solid plastic foam material for packaging the article.

Abstract: A universal multi-part form for casting concrete parapets and the like having front and rear surfaces and opposite side and end surfaces with the dimensions between end surfaces varying between parapets. The form comprises a stationary base and support means which has a horizontal upwardly exposed surface for forming a front parapet surface. A first or base end surface form member is mounted on the stationary base and has an upright inner surface shaped in accordance with the parapet base contour. Similar but opposite side surface form members are elongated and slidably mounted on the base with inner surfaces conforming to the desired side surfaces of the parapets. A second or top end surface form member is supported by the base and connected at opposite ends with the side members for adjustable movement therewith.

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: An end bracket for a wall form system is disclosed for supporting the end of a pair of spaced wall form molds. The end bracket includes a flat bar for connecting to a waler brace on one of the wall form molds and a cross bar extending from the flat bar across the end closure bulkhead form. An inclined brace extends from the flat bar to the cross bar to rigidly support the cross bar.

Abstract: A method for producing precast manhole bases utilizing an apparatus consisting of a mold jacket defining vertical walls and a mold form disposed within the jacket. The form includes a central portion spaced inwardly from the jacket and channel forming members extending over the central portion with inserts attached to the channel forming members and extending into contact with the jacket walls. When concrete is poured over the mold form and allowed to solidify, the bottom wall of the base forms over the central portion with the channel forming members defining the channels in the bottom wall of the base. The channel forming members consist of a first member attachable in a fixed position on the central portion, this first channel forming member being shaped for defining an effluent channel and a central basin in the mold base. One or more additional channel forming members extend radially from the basin, and these include locking means for fixing the members in any desired position relative to the basin.

Abstract: A reusable mold for shaping moldable material comprising a flexible freestanding wall capable of being formed in any desired shape to form the contour of the material to be molded, and a method for assembling and using the mold. The mold may include several interconnecting sections and means to hold the mold tightly against a base section to prevent leakage of the moldable material. Preprinted designs may be provided for shaping the mold to follow a desired design outline.

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 system for producing precast manhole bases including an apparatus consisting of a mold jacket defining vertical walls and a mold form disposed within the jacket. The form includes the central portion spaced inwardly from the jacket and channel forming members extending over the central portion with inserts attached to the channel forming members and extending into contact with the jacket walls. When concrete is poured over the mold form and allowed to solidify, the walls of the manhole base form between the jacket walls and the mold form. The vertical walls of the base form between the jacket and the central portion, and the bottom wall of the base forms over the central portion with the channel forming members defining the channels in the bottom wall of the base. The inserts result in openings through the base walls in communication with the channels.