Abstract: An anchor assembly for use in raising tilt-up wall sections which are cast in a horizontal position. The assembly includes an elongated steel anchor member supported in a vertical position on a base. A horizontal steel pin extends through an opening in the lower portion of the anchor member, with the pin and anchor member being retained in the base by two pairs of opposing resilient members which extend partially around the pin. A recess former is positioned over the upper end of the anchor member and is detachably locked to the anchor member by another pair of opposing resilient members which are extendable into a second opening in the upper portion of the anchor member. After the wall section is cast, the recess former is unlocked from the anchor member and removed from the wall section thereby providing access to the second opening of the anchor member.

Abstract: A prefabricated balcony platform including attachment members to fasten the platform to the wall of a building, and apertures to secure a parapet to the platform. The balcony platform consists of a load-carrying beam frame of a corrosion-resistant metal, such as aluminium, a bottom slab of refractory material attached to the lower face of the beam frame and a top slab attached to the upper face of the beam frame and consisting of a material having heat-transfer properties, preferably aluminium. In the beam frame intermediate the two slabs is provided a layer of sound-proof, refractory material, such as mineral wool.

Abstract: A small reinforced cavity is made in the precast unit and opens at the surface of the unit through a restricted slot. An anchor member, having a transverse leg at its inner end, is inserted through the slot and rotated to 90.degree. in secured position, so that the transverse leg will engage the surface of the cavity. The anchor member is firmly retained in secured position within the cavity. The outer end of the anchor member is either directly attached to a building structure for anchoring the precast unit in permanent position, or is fitted with a ring for use in hoisting and/or transporting the precast unit. The anchor member can be re-used. At least one safety pin is connected to the anchor member and is adapted to engage the slot to maintain the anchor member in its 90.degree. secured rotated position.

Abstract: A method and apparatus is provided for anchoring threaded bars, such as bolts or similar elements, to hardened concrete, cement, or stone. An anchoring hole and a side hole are cut in the solid structure, and a sprag is then positioned within the side hole. The sprag is in the form of a sleeve and has a screw-threaded opening which extends through it and which is adapted to receive a threaded anchoring bar. The angle between the longitudinal axis of the sprag and the opening is equal to the angle between the anchoring bar hole and the side hole which are formed in the structure. The sprag is positioned within the side hole until its threaded opening is in line with the anchoring bar hole, so that the anchoring bar can be screwed into it.

Abstract: For anchoring the lower end of a support post for a guard rail at the edge of a concrete floor or stairway in a building under construction, a helical wire nut is positioned inward from a perimeter board of the form for the floor or stairway. A vertical bolt having its lower end threadedly received in the nut is supported by an angle bracket mounted on the perimeter board of the form.

Abstract: An anchor bracket (10) for supporting the lower end of a vertical column (12) spaced slightly above a concrete bed (14) includes an upper, channel-shaped section (16) for receiving the lower end of column (12). Anchor bracket (10) also includes an elongate, upright, post section (18) extending downwardly from channel section (16) into concrete (14). A flat, relatively thin necked-down portion (34) is formed intermediate the ends of post section (18) to serve as a reaction member reacting against concrete (14) to thereby prevent anchor bracket (10) from rotating about or moving longitudinally along the length of post section (18).

Abstract: A remotely releasable hoisting coupling for engagement with an anchor cast in place within a concrete slab. The anchor provides a passage opening through the surface of the slab and an annular abutment shoulder spaced beneath said surface. The coupling comprises a body insertable into the anchor, a pair of lugs supported in the body at diametrically opposed positions for rocking movement about a diametric axis extending normal to the body, and means to selectively move the lugs between a protruding condition engaged with the abutment shoulder and a retracted condition disengaged from the shoulder. The means to selectively move the lugs comprises a rod axially moveable within the body and having cam surfaces directly engagable with the lugs to force the lugs to the protruding condition and holding surfaces to maintain the lugs in the protruding condition, without loading the cam surfaces.

Abstract: Apparatus such as a pickup unit for releasable connection to a member such as an anchor insert embedded in an object such as a concrete body, of the type including a housing forming part of the apparatus and which is inserted into the object adjacent to the member, lugs movably mounted in the housing for releasable engagement with the member, and an actuator movably mounted in the housing for moving the lugs between member-engaging and disengaging dispositions, is provided with sockets in the housing, a lug mounted in each socket for reciprocal rotational movement between such dispositions, the actuator having first reaction surfaces engaging the lugs to prevent them from being rotated under load, and a seat for each lug forming a part of the socket structure and providing a second reaction surface for transferring to the housing load forces exerted on the lug by the member.

Abstract: This disclosure concerns a base receptical for releasably mounting standards for guard chains, and upon removal thereof receive and support decorative modular guard rails. A hollow sleeve bracket member is positioned on reinforcing rods or mesh to receive concrete for walks, verandas, stairs and the like, this hollow sleeve bracket receives a standard having a nut positioned thereon and a bolt extending through said standard and nut to nut to abut the sleeve bracket; and, upon tightening the bolt this temporary standard is firmly positioned in the sleeve bracket. By loosing the bolt the standard can be moved, and a permanent modular guard rail standard of a decorative nature inserted therein. A plurality of these sleeve brackets are preferably connected by one or more rods or rails, which are imbeded in the concrete when poured along with the major portion of the length of the sleeve bracket members.

Abstract: A flared tube sitting on a base is embedded in a concrete slab, and a casement on a shackle can be inserted into the tube to make up the coupling. The casement holds a plunger which can be locked into a position in which its head urges balls out of the casement for engagement with the flare tube. The plunger lock includes a fork locking the casement to the plunger at the other end. The plunger head has a conical tip so that upon retraction the balls can be retracted to release the coupling or to insert the casement to make up the coupling. The flared tube is clamped down onto the base which in turn is constructed for fastening to re-bar structure in the concrete.

Abstract: A chord tie for connecting together adjacent precast concrete building panels and method for tieing together such panels in contiguous relation. Such chord tie comprises an elongated anchor member having an offset portion to be embedded in the concrete during casting of the panel, and a bolt-retaining member connected to such anchor member to receive a fastening bolt. The offset portion comprises a reversely bent portion and the bolt-retaining member comprises a pair of metal straps or plates welded to the anchor member in spaced relation to receive the body of a fastening bolt. The chord tie is cast in the concrete panel, the reversely bent portion retaining the chord tie in such position, and the bolt-remaining means is positioned along the edge of the panel. Two adjacent precast panels are connected together by means of the bolt extending between adjacent chord ties and filler washers are employed therebetween.

Abstract: An improved anchor insert adapted to be embedded in a concrete slab for cooperation with a pick-up unit which includes a locking stem having a pair of lift shoulders extending from opposite sides of the stem, comprises a concrete-excluding hollow cage adapted to be emplaced within a form for a concrete slab for insertion of the locking stem and lift shoulders into the cage after pouring the slab, the cage including a pair of spaced apart shoulders on opposite sides of and spaced from the base of the cage, the shoulders being adapted for interengagement with the lift shoulders and also with a pair of anchor rod sections, and a pair of spaced apart anchor rod sections in such engagement, wherein the locking stem of a pick-up unit may be inserted in the cage and rotated for bringing the lift shoulders into lifting engagement with the cage shoulders, and a lifting force when imparted to the locking stem is transmitted to the anchor rod sections for lifting a slab in which the insert is embedded.

Abstract: A stirrup for supporting elongated guide bars or rods for concrete screeds or strike bars used in leveling poured concrete floors, pavement and the like. The stirrup is vertically adjustably supported by a stud screw threaded in a base portion and extending upwardly from the base portion, the base portion being disposed to be embedded in a base slab.

Abstract: An elongated tapered enclosure tightly receives a collar attached to the bottom of a post. A plurality of adjustable wedges at the top of the enclosure engage the post and serve to plumb the post and firmly secure it in the enclosure. The enclosure is set in the ground flush with the ground surface. Posts are easily inserted into and removed from the enclosure to provide portable members for supporting traffic signs, walls, partitions, roofs and the like.

Abstract: A concrete slab or panel poured in its horizontal position is fitted with anchor inserts embedded in the concrete that receive releasable pickup units or devices for connection of the panel to a hoist. Each insert has a tubular member of a relatively short length to which a hollow plastic mold is attached that extends into the panel. The mold for the most part remains in the panel and forms a cavity into which part of the pickup device extends. The pickup device has a trunion plate that is placed across the insert opening in the panel. A housing extends through a hole in the trunnion plate into the insert and defines an internal cavity disposed inwardly of the insert. A bore communicates an end of the housing outside the panel with the housing cavity. An axially movable actuator rod or plunger is disposed in the bore and includes a head disposed in the cavity and formed of contiguous cylindrical and conical portions.

Abstract: Apertures in the cast concrete walls of a swimming pool are lined with tubular inserts entirely received in the apertures in sealing, conforming engagement with the concrete. The length of each insert in the direction of wall thickness is equal to or shorter than the corresponding length of the receiving aperture. The insert essentially consists of a solid mixture of a particulate, rigid, inorganic material, such as quartz sand, and a smaller amount of a more resilient, synthetic organic resin binder. A fastening flange is provided in the bore of the insert for fastening the insert in a form while the wall is being built by pouring fluid concrete mixture into the form. The flange provides a fastening base for later installed fittings, pumps, etc. During construction of the swimming pool, a form bounding a cavity is erected.

Abstract: Pockets, defined by molded plastic shells, are embedded in a massive concrete article. Lifting cables have rods to fit into the pockets. The shells which define these pockets are injection-molded to provide a lateral spline to pass a key formed on the lifting rod, and also have a parti-cylindrical end housing, closed by a snap-fitted cover plate, within which housing the key rotates to lock the rod in the socket when lift is applied to the rod.

Abstract: The device comprises, for anchoring each T-shaped fixing bolt in a concrete element, a passageway opening onto an outer face of the element and extended by a cavity which allows rotation of the head of the bolt through 90.degree.. A longitudinal reinforcement which is parallel to the outer face is located at a short distance from the outer face and near to the inner end of the passageways. The reinforcement has in the region of each passageway an opening for the passage of the head of the fixing bolt when this head extends in a direction parallel to the longitudinal axis of the reinforcement. Two retaining surfaces adjoining the opening retain the head of the bolt when it is perpendicular to the longitudinal axis of the reinforcement.

Abstract: An insert assembly adapted to be imbedded within a concrete beam structure with portions exposed at a surface of the beam structure so as to allow equipment such as piping, conduit, cable supports and the like to be attached to the insert assembly and, thus, supported by the beam structure. The insert assembly includes a generally U-shaped channel section to which the aforementioned equipment may be secured, a plurality of pairs of anchor members attached to and extending upwardly from the channel section, and a plurality of spring members attached to and between the pairs of anchor members. In the construction of a concrete beam structure, the insert assembly is placed within and against the formwork for the concrete beam structure and an elongated reinforcing member such as a cable or rod is placed across the spring members. The reinforcing member is then placed under tension, causing the spring members to deflect downwardly whereby forces are directed downwardly toward the channel section and the formwork.

Abstract: A bar assembly for securely interconnecting frameless insulating panels for walk-in refrigerators, refrigerated warehouses and the like, includes a bar body having apertured anchor elements spot welded thereto. Non-metallic, preferably nylon, female threaded coupling pods are snapped into the apertures of the anchor elements and have rectangular flange plates which resist rotation of the pods in the assembly. The threaded pods receive lag screws of fastening bar assemblies in adjacent insulating panels. A super strong threaded connection is assured and thermal conductivity in the system is greatly reduced. A greatly expedited assembly of the fastening bars is also attained.

Abstract: A socket cavity formed in a concrete slab of the type poured horizontally and subsequently tilted up, which cavity affords engagement of hoisting equipment to the slab. The inner portion of the cavity is in the form of a frusto-conical wall surface communicating with the surface of the cavity through a cylindrical bore concentric with the frusto-conical surface. The cavity is formed by placing in the slab form an expendable flask-like hollow article formed of synthetic resin or the like which is left in the slab after erection thereof. Engaging apparatus cooperable with the cavity which has on the inner end thereof arms that are pivotally moveable between a retracted position and an extended position, the arms engaging the frusto-conical wall of the cavity when in the extended position.

Abstract: An arrangement for fastening an upstanding post in a floorboard for use in indoor sports comprises a hollow cylindrical support into which the post loosely fits, having an opening provided in the circumferential wall thereof, the cylindrical support being embedded below the floorboard, a guide box which covers the opening in the cylindrical support, a headed screw rod rotatably supported in a vertical fashion in the guide box, a first wedge member screw-threadedly receiving the screw rod so that it may move upwards or downwards, a second wedge member received in the opening of the guide box so that it may move in the radial direction of the cylindrical support in accordance with the movement of the first wedge, a hole provided through the floorboard aligned in a vertical plane with the screw rod.

Abstract: A foundation anchor for fastening the base of a machine upon a foundation is equipped with a vertically extending anchor bolt movable in its axial direction, with a clamping nut being provided for attaching the base of the machine to the anchor bolt at the upper end thereof. The bottom of the anchor bolt is pivotally mounted within a cavity which extends beneath the upper surface of the foundation and compensating rings, having a wedge-shaped sectional configuration taken in the axial direction, are provided between the base of the machine and the clamping nut.

Abstract: Adjustable means for fastening heavy precast concrete panels for walls or floors, structural concrete beams, girders, and machinery to foundations vertically, horizontally, or in any plane. An internally threaded hollow member is anchored to a panel member which is to be mounted on a supporting structure with bolts; the member having numerous fastening points designed into it. Alternatively, the hollow member is placed into a foundation so machinery can be bolted down. An externally threaded hollow member which can rotate through 360.degree. is mounted in the threads of the first hollow member, and is axially adjustable therein, the second member having a tapering hollow interior keyway space extending perpendicular to the axis of the second member. The upper three-quarters of the tapered keyway sides have fine thread-like striations and a tapering internal threaded nut fits into the hollow tapering space, the nut having corresponding striations on its tapering sides.

Abstract: An improved anchor insert adapted to be embedded in a concrete slab for cooperation with a pick-up unit which includes a locking stem having a pair of lift shoulders extending from opposite sides of the stem, comprises a concrete-excluding cage having a hollow body and a base closing the lower end of the body, a first pair of spaced apart anchor rod sections intersecting the body for the application of a lifting force thereto by the lift shoulders inserted in the cage, a second pair of spaced apart anchor rod sections extending transversely of the first pair of anchor rod sections and fixedly secured thereto on opposite sides of the cage body, a pair of foot members disposed beneath each anchor rod section of the second pair, the anchor rod sections of the second pair being seated thereon, the foot members in each pair being disposed on opposite sides of the cage and spaced outwardly therefrom, and the foot members being adapted to seat on the floor of a slab form to space the anchor rod sections of both pair

Abstract: A lifting anchor for incorporation into a poured concrete slab. The anchor comprises a steel sleeve having an irregular exterior surface to effect a bond between the sleeve and the concrete of the slab and an interior surface defining a cylindrical opening formed with an annular abutment. During pouring, concrete is excluded from the interior of the sleeve opening by a plastic cap clipped onto the exterior of the bottom end of the sleeve and a plastic plug telescoped into the upper end of the sleeve. After formation of a slab with the anchor in place, the plug is removable to afford access to the interior of the sleeve.A hoisting coupling is engagable with the anchor through means of a cylindrical body sized for entry into the sleeve. The inner end of the body is provided with a pair of lugs which can be extended radially outward to engage the abutment of the sleeve and contracted radially inward to afford removal of the body from the sleeve.

Abstract: A holder adapted for supporting an anchor insert to be embedded in a concrete slab, such insert including a shank having an enlarged disc-like foot on one end thereof, the holder comprising an enclosure, a plurality of legs extending from the enclosure, and a foot at the outer end of each leg and adapted with the remaining feet to support the enclosure in spaced relation above the floor of a concrete form, such enclosure including a seat adapted for supporting an insert with the foot of the insert seated thereon, and means adapted to engage the insert when supported on the seat for limiting tilting movement of the insert.

Abstract: An insert and anchor positioning and locating device is provided for initially locating and positioning anchors and inserts with respect to subsequently poured concrete structures. The device comprises a preselected anchor or insert which is secured to a positioning tab in a detachable manner and selectively employs a frangible material, such as an expanded polystyrene sold under the trademark "Styrofoam". The positioning tab is secured to the styrofoam, when such is employed, and the tab has indicia thereon for positioning the same with respect to preselected places on forms used for pouring of concrete. The tabs are provided with holes for fixedly, but removably positioning the tabs with respect to the forms.

Abstract: A socket cavity formed in a concrete slab of the type poured horizontally and subsequently tilted up, which cavity affords engagement of hoisting equipment to the slab. The inner portion of the cavity is in the form of a frusto-conical wall surface communicating with the surface of the cavity through a cylindrical bore concentric with the frusto-conical surface. The cavity is formed by placing in the slab form an expendable flask-like hollow article formed of synthetic resin or the like which is left in the slab after erection thereof. Engaging apparatus cooperable with the cavity which has on the inner end thereof arms that are pivotally moveable between a retracted position and an extended position, the arms engaging the frustoconical wall of the cavity when in the extended position.