Abstract: A deck hanger utilizes two sheet metal spring hanger clips to hook behind parallel accessible edges of a deck installation. Each clip has a body which includes a rectangular hole. A rectangular bar is positioned through the holes and U-shape blocking clip straddles each hanger clip body securing the bar in place. The bar spans a downwardly opening channel formed by the deck panels and supports cable trays, piping or other installations utilizing what might normally be dead space. Each clip also has a hook portion with a back having a barb and a nose portion no thicker than the sheet metal from which it is formed to enable grasping of the edges without distortion.

Abstract: A slip-fit electrical connector for a threaded transformer stud has a stepped or key type stud hole which includes an oversize unthreaded circular hole on top and a slightly smaller intersecting hole on the bottom. The bottom hole has threads matching those of the stud and a jam screw forces the threaded stud into intimate contact with the threads of the smaller hole, such contact extending over a substantial arc. The connection provides a tight and improved electrical connection having simplicity of installation.

Abstract: A trapezium and like structure spring metal hanger clip includes two upwardly extending legs which are interconnected at their lower ends by a short bottom section. One leg at its top includes a generally horizontal arm extending toward the top of the other leg and adapted to be positioned through a hole in the top of the other leg. The horizontal arm is generally channel shape in sectional configuration and the upper edge includes serrations adapted to engage the upper edge of the hole in the top of the other leg, to prevent the clip from being sprung open without the other leg moving upwardly with respect to the arm. The clip may be sprung open in one form and the horizontal arm inserted through the trapezium and like structure and into the hole at the top of the other leg. In this manner both legs are supported by the horizontal arm. In another form, the clip is already open. A nut is snapped into place between the legs at the lower end and held against vertical movement and rotation.

Abstract: A snap spring clip supports conduit, cables, and the like from a structure and has a C-shape body with one end of the body cooperating with the other end to form a restricted opening into which such conduit, cables and the like may be snapped. The one end of the body may be formed with a reversely flared lip while the other end is folded back on itself to form a U-shape clasp, the outer leg of the clasp being in the form of a more narrow finger extending generally parallel and adjacent the inner leg. The finger is somewhat longer than the inner leg and extends midway between barbs struck from each edge of the inner leg. The U-shape clasp is formed with a flattened bulb fold providing sufficient area to push the clip to a locking position with the finger extending through a hole. Once in the hole, because of the configuration of the fold, and the relative size of the hole and finger width, the clip is locked in place.

Abstract: An exothermic welding jig, molds for the jig, and a method of forming and manipulating the mold parts is disclosed. Upper and lower mold parts are included with a crucible fitted on and clamped to the upper mold part. The upper mold part and crucible may be moved as a unit to open and close the mold and also inverted when open for cleaning and inspection. The crucible can quickly be removed or snapped in place for mold or crucible change out. The jig will fit in cramped quarters and has a handle which may be used as a cane or supporting device. A toggle opens and closes the mold set and will hold the molds at any position where released. A mold system with diagonal sleeving makes it easier to form X-connections and other connections in tight or restrictive locations. The method includes the attachment and manipulative steps.

Abstract: A two part exothermic weld mold assembly is horizontally split through a weld cavity. The upper single mold port includes a crucible offset from the weld cavity. The tap hole from the crucible to the weld cavity includes a vertical section and a slanted or inclined section, the latter being a through-hole from the weld cavity to the exterior of the mold. The inclined through-hole serves to vent gasses during welding and also enables the tap hole and adjoining weld chamber more easily to be cleaned for reuse.

Abstract: In steel reinforced concrete structures, a hanging system uses an embeddment anchor with a head or washer positioned behind the second layer of reinforcing from the load being supported. An adjustable length tubular opening or shank extends from the head or washer to the form which forms the surface from which the load is to be supported. In the tubular embodiment, two sealed tube sections telescope with respect to each other for adjustment to the required distance and are held to the head or washer by a removable plastic threaded fastener. After the concrete is poured, the fastener is removed and a threaded stud such as a rod is threaded into the head or washer through the tube. The tube is then sealed. In another embodiment, an internally threaded sleeve is adjusted on a threaded shank to obtain the variable distance from the washer or head to the form.

Abstract: A mold assembly and method for lap welding a conductor to a vertical bar or rod features two vertically split mold parts having a major parting surface in which are formed a crucible, tap hole, sleeving for the conductor and a weld chamber. An offset parting surface forms a sleeving passage for the vertical bar or rod, and a portion of the weld chamber. The offset parting surface is formed in an interfitting tongue and groove which assists in the assembly of the mold parts.

Abstract: A plastic clip is fastened to a metal or wood stud to support and position multiple runs of various types of wiring or cabling. The clip keeps the wiring in compliance with the National Electric Code (NEC) Section 300-4. The clip includes a base with a short gauge flange at one end to engage the face or front corner of the stud when the base is fastened to the side of the stud. Projecting directly from the base or a neck extension of the base are two spaced hinge arms, which extend at an angle to each other. Each arm includes two interior opening cable receiving slots. Between such slots is a bulbous thinner wall pressure body section which in its undistorted condition partly restricts the openings of such slots. A similar thinner wall section forms the interior or base side of the innermost slot in each arm.

Abstract: A probe assembly system for high pressure insertion and retrieval in pressure vessels includes a stuffing box fitting with an integrally formed collet which surrounds a probe or device passing axially therethrough. The collet fingers are externally taper threaded and an internally taper threaded collet lock nut locks and releases the collet with minimal rotation. The interior of the collet fingers have teeth which bite into the shank of the probe or device. A single acting hand pump operated tool is quickly attached to the fitting. The tool includes a piston and cylinder with an elastic cord spring return inside the cylinder and attached to the piston in sling shot fashion. The lower end of the tool includes a socket for the collet lock nut which can be tightened and released by axial rotation of the tool. The lower end also includes a window and piston stop. The piston can be attached to the probe, if required. The hand pump includes a pressure gauge and variable relief valve.

Abstract: The box support system uses a channel shape one piece slotted strut and a twist spring snap clip. The strut ends are bent opposite the legs of the channel to form spring separable fingers which snap over and lock behind the bulb on the stem of a Tee bar. The slots of the strut are centered transversely providing two equal shelves on each side. The slots are positioned asymmetrically longitudinally so that a box may be supported anywhere between spaced Tee bars. If it will not fit because of unslotted areas, it will fit if the strut test is turned end-for-end. The spring snap clip includes a V-shape body forming a pointed nose. The two legs of the body have shouldered necked portions adjacent outwardly extending feet which terminate in upwardly extending toe tab. Opposite shoulders at the neck include oppositely angled spring locking talons. Box assembly is obtained by inserting the clip through the center knockout in the back of a box with the toe tabs entering two smaller holes on each side of the knockout.

Abstract: Extruded conductive metal stock has a number of grooves along one long side of the sectional configuration of the stock which extend almost to the other long side. The grooves form parallel fingers. The stock is transversely cut to form machining stock blocks and the fingers become square posts projecting from a bar. The stock blocks may be cut between the posts to form smaller blocks with fewer fingers or posts. The blocks are then loaded on a machining center pallet with the fingers facing radially outwardly. The pallet is indexed through the machining center to form the square in section fingers into round posts, using a center flush hollow mill. The diameter of the mill and the spacing of the fingers is selected to avoid secondary milling. The posts are axially drilled to form a barrel wall and one or more set screw holes are drilled and tapped in the wall. If a flat pad pressure connector is formed, the posts are cut to form the pad prior to machining, and the axial drilling is omitted.

Abstract: Elongated generally rectangular in-section conductive metal bar stock is formed by extrusion to form a post type electrical bus connector. The shorter dimension is approximately the diameter of the posts to be formed, while the longer dimension is approximately the height of the posts plus the thickness of the bus or bar from which the posts will project. The narrow end forming the bus has a triangular ridge. The bar stock is cut-to-length dictated by the number of posts to form blocks which are then loaded into specialized pallets of a machining center. The machining center is the type having at lest two pallets, one being loaded while the other is indexed with respect to the tool spindle. The machining center also includes an automatic tool changer. The machining center mills the posts with a hollow center flush mill, drills the hole in the posts and forms tapped holes followed by deburring. The bar stock may have extruded L-shape flats, one of which forms a pad for a compression type connector.

Abstract: An exothermic welding apparatus and method uses a crucible which can be used with a variety of exothermic weld metal material volumes to produce welds of different sizes while maintaining the desired diameter to height ratio for each volume of exothermic material. In one embodiment, the crucible includes a double or two stage cavity. The crucible includes a somewhat smaller lower stage which reduces the diameter for smaller volumes. This lower stage may have two disk seats to isolate the two stages from the tap hole. A disk seat is provided for a larger disk between the two stages. The crucible may include a volume of exothermic material in the smaller lower chamber, the larger upper chamber, or a combination of both. In a triple stage embodiment, a wider variety of exothermic material volumes or masses may be accommodated, all while maintaining the desired diameter to height ratio for each charge. Although the desired ratio is approximately one, the ratio range should be maintained from about 0.5 to about 1.

Abstract: A submersible bus type connector using hollow posts or flat pad posts is machined from conductive metal bar stock extrudate in a continuous machining line, to form the posts and the drilled and tapped holes for the conductor connection hardware before being cut-to-length to form a connector having the desired number of side-by-side posts all machined from one block. The process produces an improved and yet low cost connector.

Abstract: The invention provides a new and improved process and exothermic reaction mixture for use in the process for producing molten weld metal. The molten weld metal is used in joining one non-ferrous metal piece with at least one other metal piece. The process and exothermic reaction mixture have distinct advantages over the prior art. These advantages include a higher filler metal yield, reduction of odor, and a higher quality corrosion resistant weld. These advantages are accomplished by a process wherein a reactant mixture is provided which has a reducing agent, a filler metal which does not react with any of the compounds of the mixture, and two or more metallic compounds which are exothermically reduced by the reducing agent. The metallic compounds subsequently form a compound, with the reducing agent, having a high heat of formation which provides an exothermic reaction with sufficient heat to melt the filler metal.

Abstract: To facilitate the casting of stronger and more precise steel reinforced concrete members and also to facilitate the formation and field joining of such members there is provided a bar splice which comprises a generally cylindrical sleeve open at one end to form an axially elongated chamber to receive a steel reinforcing bar telescoped therein, and provided with internal threads at the other end whereby a threaded bar end may be secured to the other end, and when secured sealing the other end of the chamber. The threads are preferably tapered and the chamber includes inwardly extending axially spaced annular ribs. Lateral ports are provided at each end of the chamber. The wall thickness of the chamber adjacent the threaded end of the sleeve may be increased to improve tensile capabilities. The length of the chamber is most of the splice sleeve since the threaded connection occupies little axial space.

Abstract: A box bracket for stud wall construction is formed from a single sheet metal strap which has one major transverse right angle bend forming a vertical leg and a horizontal leg or arm with the vertical leg having a vertical offset overlapping the face of the stud while the horizontal arm extends in a horizontal plane over the top or bottom of the box and abuts the far wall panel. The horizontal and vertical legs are offset and the vertical leg is provided with a 45.degree. gusset or panel which includes a keyhole opening and a slot, to each of which a different size box and plaster ring may be mounted. The vertical leg includes two spaced edge tabs or flanges between which a vertical edge of the box is grasped. The horizontal leg or arm includes an interior stiffening flange and an exterior U-shape knock-out opposite the flange. The knock-out would normally block one of the knock-outs in the box.

Abstract: A low voltage outlet mounting plate for interior wall construction includes an apparatus to affix the plate to the face and/or side of a stud at a selected height. The plate also includes a generally rectangular wall projecting outwardly from the face of the stud the approximate thickness of the drywall or finish installation, the outwardly projecting wall surrounding a rectangular opening. A pair of bendable tabs projects from the top and bottom edges of the opening and each is adapted to be bent horizontally inwardly to a direction perpendicular to the face of the stud. A hole is provided in the each tab adapted to receive wiring conduit or a tied loose wire. In this manner, when the wall is finished the wiring or conduit is convenient to the rectangular opening for final installation of the outlet.