Abstract: A pickup unit for releasable connection to an anchor insert embedded in a body, such insert having an exposed head portion and a reduced shank portion extending from the head portion and into the body, includes a connecting member rotatable adjacent to the insert head portion, such connecting member having a recess of the bayonet slot type receiving the insert head portion captive within the connecting member while the insert shank portion extends outwardly therefrom upon relative rotation between the connecting member and the insert in one direction, and such connecting member releasing the insert head portion upon such relative rotation in the opposite direction, a latch mounted for in and out movement relative to the recess for respectively preventing and permitting relative movement of the insert head portion out of the recess, a lever movably connected to the connecting member, structure for coupling the lever and the latch, and structure for engaging the lever with such body, whereby a force may be appl
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: 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 system for the edge-lifting of a horizontally disposed concrete slab either for transport or tilt-up operations, and embodying components which, after positioning in the slab form, become embedded in the slab after the wet concrete is poured and has become set or hardened. Such components include a horizontal reinforcing bar which extends through the edge region of the slab at a low level and imparts reaction force to a slab-lifting anchor bolt thereabove through the medium of a hanger clip at the time that the slab is lifted. The anchor bolt is fixedly positioned in the slab form and the hanger clip is hung on the anchor bolt and serves to support the reinforcing rod therebeneath in cradle-like fashion preparatory to a concrete-pouring operation for slab-forming purposes. The hanger clip of the system obviates the necessity of creating an upward offset in the reinforcing rod and hanging the rod directly on the anchor bolt at the point of the offset.
Abstract: A tilt-up wall panel in raised position is braced with panel brace assemblies, and the panel brace assemblies are braced with a pair of knee brace assemblies for each panel brace assembly, to form a tripod-like structure which eliminates the need for the conventional lateral bracing of the panel brace assemblies. The knee brace assemblies are connected to the wall panel, and for that purpose, two knee brace assemblies extending laterally between a pair of spaced apart panel brace assemblies include a connector common to both and which is connected to the wall panel. A preferred connector includes a base plate adapted to be connected to the wall panel, and a pair of swivel means mounted on one side of the base plate and each forming part of one of the latter two knee brace assemblies.
Abstract: A remotely operable mechanism for disconnecting an elevated pickup unit component of lifting apparatus from a tilt-up concrete wall slab in raised position following a lifting operation, the pickup unit being connected to the slab by fastening means engaging an insert embedded in the slab wall, includes a manipulating pole serving as an operating handle, and a flexible fastener coupling tool having a proximal end removably connected to one end of the pole and a free distal end opposite thereto, the connected pole end being uppermost on the pole in use. The tool has at its distal end a head releasably engageable with the fastening means and operable for disengaging the same from the insert to thereby release the pickup unit for removal from the wall slab. The tool includes a universal joint extending between and flexibly coupling the head and the proximal end of the tool, whereby the tool may be rotated by rotation of the pole while the pole is angularly disposed relative to the axis of rotation of the head.
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 divider strip with an upstanding screed for use in connection with the pouring of a pair of adjoining concrete slabs, such strip being designed to be supported by a horizontal series of laterally and substantially equidistantly spaced stakes which are set below a predetermined grade level, and, in addition, being adapted when in its operative position to have wet concrete poured on opposite sides thereof in order to form a pair of adjoining slabs with at least one key joint therebetween.
Abstract: A divider strip with an upstanding screed for use with a pouring of a pair of adjoining concrete slabs, such strip being designed to be supported by a horizontal series of laterally spaced stakes which are set below a predetermined grade level, and being adapted when in its operative position to have wet concrete poured on opposite sides thereof in order to form a pair of adjoining slabs with a key joint therebetween. A dual reentrant bend at the upper marginal portion of the strip establishes a downwardly facing locking channel for the upper ends of the stakes and also establishes an upstanding screed which extends upwardly to the grade level and is for the most part of single thickness.
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 alignment clip adapted for use in aligning two like reglets in end-abutting relation, such reglets each comprising a channel component including a bight portion and two flanges extending from opposite longitudinal edges of the bight portion and converging outwardly therefrom, said clip comprising a body portion adapted to overlie the adjacent ends of the bight portions of two abutting reglets, and flange means on opposite longitudinal edges of the body portion for engaging the reglet flanges to hold the reglets in alignment, such flange means including a snap-on flange.