Abstract: A current-carrying screw connection between two tubular conductors located in a high-voltage switching installation having a metal encapsulation and insulated with compressed gas comprises radially oriented screws and a tubular shield, the screw heads being disposed inside the wall of the shield. The shield extends in a longitudinal direction over the ends of the two conductors and covers the butt joint between them. The shield is connected to each conductor via screws which are disposed within a region having a maximum circumferential extent of 180.degree..

Abstract: A safe construction having a liner configured for forming a valuables chamber with an access opening, the liner being positioned within a cavity in the ground with rebar assemblies adjustably connected to a framework secured to and supporting the liner within the cavity, the rebar assemblies each including first and second rebar sections with a rust resistant coupler interconnecting the two, the coupler being formed preferably of plastic with axially aligned but separated openings, each opening being configured for receiving an end of one of the rebar sections. The rebar assemblies are driven into the ground with the coupler at a position for being totally, or at least partially embedded in the poured concrete for deterring the formation of rust on the rebar sections within the concrete.

Abstract: An extension clip is disclosed for attaching threaded end portions to a plain rod. The clip is cut from flat metal plate and is shaped into a hollow form having clinch-type ears at one end for gripping the plain rod and inwardly bent tabs at its opposite end to form means for threadedly engaging threaded rod end portions. Intermediate to the clinch ears and the thread forming tabs additional tabs are provided which act as stops for determining the position of the plain rod and the threaded rod ends in the clip.

Abstract: An adaptor structure for connecting a plurality of beverage cans together in selected configurations comprising a base plate with connector members on a first side thereof, a can-receiving socket on the opposite side thereof and spacer members within said socket. The cans have end recesses in which the spacer members seat when an adaptor is coupled to a can to form a strong, stable connection. Cans are assembled end-to-end with back-to-back adaptors at the end interfaces, the adaptors being connected to each other by the connector members.

Abstract: A ground rod, coupling therefor and method of making that coupling are disclosed providing both strength and improved conductivity. Ground rods are usually copper coated or plated steel rods formed in sections which are driven or, perhaps more correctly, pounded into the ground to form grounding or earthing connections for dissipation of electrical current into the earth. The coupling includes co-extensive inner and outer sleeves of copper and a corrosion resistant metal such as stainless steel, respectively, which are mechanically interlocked along their axial lengths. The inner copper sleeve is formed with threads or oppositely directed cones after the two sleeves are interlocked and in so doing the interlock between the sleeves is enhanced.

Abstract: A drive fit coupling for joining together a pair of plain end concrete piles each having a polygonal cross sectional configuration is disclosed. A metal sleeve is provided in which a portion of the perimeter of the sleeve wall expands outwardly as the piles are driven into the sleeve causing the sleeve to fit tightly over the ends of the piles. The friction of the sleeve around the pile ends is sufficient to resist bending thereby keeping the joined piles straight during driving. Center stopping means is also provided to prevent a pile from entering the sleeve beyond the vertical center thereof.

Abstract: Means are provided for reinforcing the assembly of facing slabs of an industrialized house. They comprise essentially a fish-plate bridging the joint formed between adjacent slabs. The slabs are provided with holes in which socket-nuts are sunk for engagement by the tightening bolts passing through holes formed in the fish-plate and provided with several radial slits forming as many blades adapted, when the bolts are tightened, in order to provide dome-shaped projections acting as punching means in the cavities. The bolt heads exert a pressure against lugs engaging with one end the flange of a post of the frame structure of the house and with the other end the fish-plate; preferably a distance-piece is provided between the lug and the blades of the corresponding hole.

Abstract: A can stacker comprising a square piece or interlocking element of moulded plastic material with circular recesses on both sides to conform to the diameter of the ends of empty beverage cans to be stacked, which cans constitute throw away items. The four edges of the plastic piece are shaped like a square dove-tail, with two adjoining sides male and the other two adjoining sides female so that may interlock horizontally with other interlocking elements in parallel vertical stacks as well as interlocking the ends of vertically stacked cans. Such cans may be used for building numerous useful items, such as coffee tables, bookcases, room divider, etc.

Abstract: A coupling assembly for joining a pair of golf clubs comprising a housing portion and gripping portions disposed along a longitudinal axis. The housing portion has first and second receiving ends and the gripping portions define a bore for receiving the ends of two golf clubs. A tightening mechanism is mounted to cause the gripping portions to move between an open position and a contracted gripping position wherein the tapered handle of the golf clubs is tightly gripped. In a specific embodiment the gripping portions include gripping sections spaced from one another in the open position and are movable toward each other to the contracted gripping position.

Abstract: A cylindrical pivot for a multiblade damper assembly having at least three pivotally mounted blades is provided in which the blades are interlinked by connecting rods pivoted to brackets which are secured to each of the blades. Each bracket is formed with a pair of parallel extension arms which extend beyond an end of the blades, and these arms have opposed openings for receiving a cylindrical pivot at their outer ends. A cylindrical pivot is rotatably mounted in these opposed openings, each pivot having a threaded axial bore at both ends thereof and a cross hole extending therethrough. At least two of these pivots are axially joined together by means of a threaded rod which is preferably constituted by a studded connector having a centrally positioned flange which serves to insure that both pivots are adequately threaded on, and it also serves as a stop when the pivot between the arms of the bracket carries no connecting rod.

Abstract: The connector connects two electric conductors together in a sealed manner, providing dielectric continuity of the conductor insulation as well as conductive continuity of the conductors. Said connector comprises a connector sleeve (2) having a conductive portion (21) made of a malleable material and a cavity (23) for accommodating a bared end portion (5) of a conductor as well as an adjacent insulated portion of said conductor. The sleeve (2) is covered by an insulating covering (6) which completely surrounds the conductive portion (21) and is folded over at the ends to line those parts of the cavity (23) which receive insulated portions of the conductors to be joined.

Abstract: The internally plugged ends of glowing liquid filled tubular jewelry are releasably clasped together for making necklaces, joining adjacent tubular sections together and the like, by means of a flexible plastic tubular clasp member, as of clear polyvinylchloride, into which the internally plugged ends of glowing liquid filled tubular jewelry are fitted snugly. The tubular clasp member is axially coextensive with the plugged end portions of the liquid filled tubular jewelry so that the inner wall of the tubular clasp member frictionally grips the outside wall of the tubular member of the jewelry.

Abstract: This connector consists primarily of a cylindrical sleeve, having thumb-screws for securing interior plates to a shaft of any desired length, and it will removably receive a paint brush, scraper or broom in the other end, so as to enable the user to pain, scrape and sweep high ceilings and over-hangs around a building.

Abstract: A mechanical fastener is disclosed for joining two plugs in coaxial alignment and in a plurality of relative orientations. The fastener is particularly adapted for use in joining models of molecular constituents to assemble models of larger molecular structures. Models of molecular constituents are disclosed which incorporate a plug having a generally cylindrical shank extending along an axis corresponding to a chemical bond and at least one tab projecting outward from the surface of the shank. Broadly, the fastener comprises a hollow housing which includes a first and a second end wall and a side wall extending between the two end walls. The end walls and the side wall define a cavity within the housing. Each end wall has a plug-receptacle opening passing through it shaped and dimensioned to receive a plug. The surface of each end wall which faces the cavity has a plurality of grooves therein extending radially outwardly from the plug-receptacle opening and spaced apart azimuthally around the opening.

Abstract: An apparatus for continuously dredging submarine mineral deposit comprising plural pairs of pulleys, each of which is pivoted coaxially at a preset distance. Plural pairs of specific endless ropes are adapted to be brought into contact with said pulleys and to be driven in translation movement with each other. Means is provided for preventing slippage between said ropes. When buckets for scraping up ores are being circulated between the upper deck of a barge and the seabed, said endless ropes are directed to travel downward from the upper part in a diagonally rearward direction. Also provided is an ore discharging chute adjacent to a spot where each of said buckets begins to glide down.

Abstract: Improvements in sucker rods for oil wells and couplings therefor; light weight and electrically insulating sucker rods and couplings; fiberglass windings, resin impregnated, for sucker rods and sucker rod couplings; strand-cable type sucker rods with compression sheath windings thereon of resin impregnated fiberglass.

Abstract: A replacement torque rod assembly for field and maintenance installation which includes ball joint assemblies, each having a housing rod extending therefrom to position in butting relation after being cut to a dimension to span a predetermined distance for assembly and a telescoping sleeve overlying the abutting ends and welded to said ends to provide a rigid torque rod for field installation.

Abstract: The disclosure teaches a firmly joined composite applicable for joining objects of various shapes, including flat plates, curved plates, cylindrical objects, pipes and rods of circular and other than circular cross section. The joined composite is simple to prepare and can be made hermetically tight if desired.

Abstract: An improvement for the assembly of ground rods, comprising a fitting having two threaded portions, the first as a guide portion being adapted to receive an unthreaded ground rod and a threaded gripping portion adapted to grip the end of a rod through deformation of the threads when the rod is forceably inserted in the fitting. Conjointly usable therewith is a similarly threaded terminal fitting adapted to receive an electrical ground line and retain the same permanently in a contact position when the fitting is forceably driven on the rod.

Abstract: The plastic coupling unit includes oppositely directed tubular body portions, each having a circular opening at one end leading into its bore for receiving therein one end of a pole. Each tubular body portion is provided with a resiliently mounted tongue carrying at its free end a latch member that projects through a rectangular side opening into its bore so as to be engageable with a notch in the inserted end of the pole. A longitudinal key is contained in each bore and each inserted pole end has a keyway for receiving a key. In addition, the bores are formed with resilient ribs having sawtooth splines thereon that press against the pole end so that the two pole ends are firmly held by the coupling unit. Any number of coupling units can be employed in order to connect a desired number of poles in an end-to-end relationship.

Abstract: A spring type article projecting device for propelling an object, at a target, is disclosed. The device comprises a stock, a handle and a striker head housing that includes a striker plate actuated by a striker pin. A force deflector member, pivotally mounted within the striker head housing, transfers the striker pin impact to the striker plate. A cocking member is provided which may be moved manually into various positions against the action of a spring. The invention provides a spring type article projecting device which is very simple in construction, is functionally-reliable and which is safe in its use and provides striking qualities superior to known apparatus.

Abstract: Connectors are provided to connect adjacent roof ridge ventilator sections. The connectors include a cutout, intermediate wall, an outer jacket and an inner sleeve defining slot to receive the ends of adjacent ventilator sections.

Abstract: A connector structure comprising a first connector element for securement to the end of a post-like structure, and a second connector element for securement to a further structure. One of the connector elements has a flange with a groove about an inner connecting side wall thereof. The other connector has a projection portion with a groove about an outer connecting side wall thereof. The projection portion is dimensioned for close fit within an inner recess area formed within the area defined by the flange. With the projection portion positioned within the said area, the grooves are juxtaposed to define an endless locking channel. At least one access passage extends through the flange to join the locking channel tangentially to permit passage and insertion of a locking rod at least in a substantial portion of the locking channel. The rod has a cross-section for close fit into the locking channel whereby it can be fitted in the channel through the access passage to lock the connectors from separation.

Abstract: A method for coupling together two generally axially aligned structures, preferably concrete tunnel sections, is disclosed. The method includes mounting coupling apparatus including coupling means having an outwardly facing socket with a tapered thread therein to a first structure, mounting a coupling tendon having a tapered threaded end dimensioned to mate with the socket to a second structure, coupling the tendon to the coupling means and applying an axial tension force to the tendon and coupling means. The method and apparatus enables coupling together of substantially misalignment structures which could not be accomplished if conventional cylindrical threads were employed.