Abstract: The connection has a connection piece (1) which has two displaceable wedges (4, 13) in a bearing housing (8) . These wedges (4, 13) can be displaced in the bearing housing (8) independently of one another by a guide bearing (15, 16). In the working position, the wedge (4) extends into a dovetailed longitudinal groove (20) of a sectional bar (2). The front side (5) of the wedge (4) is profiled and engages a correspondingly profiled wall (22) of the sectional bar (2) in a positive-locking manner. The wedge (4) spreads two clamping tongues of the bearing housing (8) against the flanks of the longitudinal groove (20). By pivoting the guide bearing (15), the wedge (4) can be retracted, and the connection can be separated. A second wedge (13) is inserted axially into the interior space of a second profiled piece (3). This wedge (13) spreads two brackets (11) of the bearing housing (8 ). Both sectional bars (2, 3) have the same design and may be cut off to any desired length.

Abstract: A staircase cabinet comprises a plurality of treads each having an outer edge, an inner edge and a back surface; a pair of outer stringers both for defining opposed walls of the cabinet and supporting the outer edges of each tread; an inner stringer for supporting the inner edges of each tread; and fasteners for attaching the treads to the inner stringer and the outer stringers in alternating arrangement on respective opposite sides of the inner stringer to define an alternating staircase for use between a lower level and an upper level, the back surface of the treads and the outer stringers defining a cabinet space. The outer stringers comprise planar wooden sheets having an outer surface, and the fasteners pass only partially through the planar members to maintain the outer surface unbroken by the fasteners.

Abstract: A fastener for affixing a mounting track to a wall of a switchbox includes a retainer block for supporting a mounting track, the retainer block having a cross-sectional size and shape generally conforming to that of the interior cavity of the track. The retainer block includes a stop plate formed on a retainer block face, the stop plate covering the end of the mounting track when the retainer block is supporting the track. A fastening bore is formed in that end of the retainer block facing the stop plate and a sealing stay or rib is disposed on the retainer block to encircle the fastening bore.

Abstract: This clamping device is intended for releasably connecting two profiled parts (1,19). One of the profiled parts (1) is arranged so that an insert core (2) can be inserted and fixed in it. The core (2) has an axially movable bolt (7) having an end portion which comprises a projection (21) intended to be introduced in a slot of a second profiled part (19) in order to exert a force against an area of a portion of said second profiled part (19) partially covering said opening. A screw received in a threaded bush (4) engages the bolt (7) by means of a system of sliding surfaces (14,15) in order to displace the bolt axially. The bolt (7) has supporting means (27,28) for pivotally supporting holding pieces (17,17'). Said holding pieces and the interior walls of the insert core (2) have a second system of sliding surfaces (24,26) which owing to the axial movement of the bolt (7) cause a deviation of the holding pieces (17) having in its free end area said projection (21) intended to exert said force.

Abstract: A cross coupling arrangement for two bars disposed at right angles to one another and provided with undercut longitudinal grooves, having a screw bearing a head and disposed parallel to the symmetry axis of a longitudinally running bar in an undercut longitudinal groove of same, whose other end engages a nut disposed in an undercut longitudinal groove of the transversely running bar, and whose head abuts against a cylindrical insert which is installed axially in the undercut longitudinal groove of the bar and which has a through-bore for the screw.

Abstract: A connecting arrangement for connecting together a pair of orthogonally arranged profile bars a first one of which (1) is arranged with one of its ends adjacent the side of a second bar (2). A groove connecting member (4) is slidably retained in an undercut longitudinal groove (8) contained in the second profile bar, and an end connecting member (3) is slidably mounted in the groove intermediate the groove connecting member and the adjacent end of the first profile bar. First screws (6) fasten the end connecting member to the adjacent end of the first profile bar, and second screws (5) fasten the groove connecting member to the end connecting member, thereby to connect together the bars. Locator projections (11) on the end connecting member serve to properly position it relative to the first profile bar.

Abstract: A device for releasably connecting first and second rods together is characterized by a connecting flange mounted on one end surface of the first rod by a self-tapping screw. The flange includes at least one latch projecting from a surface thereof to engage a recess in the first rod in a form-locking manner. With the flange mounted on the end of the first rod, the first rod is connected with a side of the second rod so that the rods have perpendicular longitudinal axes. The second rod contains a groove along its side in which a pair of nuts are retained. Fastening screws pass through grooves in the first rod, through openings in the flange and into tap holes in the nuts to threadably connect the first rod with the second.

Abstract: A connector which can couple a first profiled member having an internal compartment behind a slotted wall with a tubular second profiled member has an open-ended housing which is installed in the second profiled member and a one-piece profiled plate-like coupling member in the housing. The coupling member has two integral prongs with mirror symmetrical claws at their free ends, and followers adjacent the claws. The housing has integral cams which can stagger the claws by way of the followers in response to longitudinal displacement of the coupling member in the housing as a result of rotation of an eccentric which normally extends into a window of but is depressible into the second profiled member to permit insertion or removal of the connector. The claws can be introduced through the slot in the wall of the first profiled member to be thereupon staggered by the followers in cooperation with the cams in response to rotation of the eccentric in a direction to move the claws toward the housing.

Abstract: A connector system for store fixtures comprising an elongated connector which is extended through a tubular member in one component of the store fixture and which is yieldably received by a tubular member in a second component of the fixture.

Abstract: A connecting element for the detachable connecting of two frame components, which, within a casing, has at least one retaining element, with which the connecting element and also the frame profile can be connected in a detachable manner with the support profile. Within the casing, an eccentric cam is rotatably positioned to conduct the retaining element in a longitudinally movable manner in the casing so that a component of the retaining element projecting out of the frontal side of the casing can be brought into engagement with an undercut longitudinal groove of the support profile. In the discharge position of the retaining element, the eccentric cam head of the eccentric cam can be pressed into the casing against the force of a spring to be engaged in a boring of a frame profile. A safety mechanism prevents, in the insertion position of the retaining element, the axial movability of the eccentric cam.

Abstract: A locking device for assembling tubular frame components of exhibit framework structures and the like, including an elongated box-like housing sized to be received in a cavity of one of the frame components, the housing having an open coupling end provided with protruding spaced apart coupling ear formations integral with the housing adjacent top and bottom walls thereof and flanking the opening of said coupling end. An elongated thin spring-metal interlocking latching member is movable in the housing by a cam and has a recurved hook formation on one end thereof spanning the space between and aligned with the ear formations.

Abstract: A T-connection between two profiles, particularly a cross-bar profile and a post profile of a facade each having an inner chamber, comprises a U-shaped connector located in the inner chamber of one of the profiles, the connector having an end plate provided with a guiding opening and having two opposite edges and two plateshaped legs extending from the opposite edge of the end plate near inner surfaces of the one profile, and a flange bolt guided in the guiding opening of the connector in a non-rotatable manner and extending into the inner chamber of another one of the profiles through an opening in a wall of the other profile so as to be fixed relative to the latter. The flange pin has a portion extending outwardly beyond the end plate and provided with at least one arresting opening. The connector has a toggle lever-like bridge web extending between the plate-shaped legs and provided with a threaded opening.

Abstract: A structural framework assembly made up of tubular members interconnected by a first connector arrangement which uses a connector having a concave surface pressing against a curved outer surface of a tubular member and having a pair of spreadable arms which are spread by a setscrew to lock inside an end of another tubular member, and a second connector arrangement which uses a connector plate extending into the end of a tubular member with the bottom of the connector plate inserted into a longitudinal slot at the bottom of the tubular member and a top tab on the connector plate inserted into an upper slot at the top of the tubular member. The longitudinal slot at the bottom of the tubular member opens out to the end of the tubular member and the upper slot is located at a distance from the end of the tubular member.

Abstract: A connector releasably connects two building elements (6, 7), one (7) of which has an engageable edge (8) and the other (6) has, at the connection end, a cavity (9). In the cavity, a first sleeve (2) of the same cross-sectional shape as the cavity is insertable therein. The sleeve has a longitudinal hole (10) for receiving an elongate clamping member (1) which includes, at its outer end, a hook (18) for engagement with the engageable edge. The part of the clamping member received in the longitudinal hole has a bevelled surface (16) to cooperate with a clamping screw (4) which, when turned, is movable transversely of the clamping member to a position with its tip against the bevelled surface under spring bias between the first sleeve and the clamping member. The bevelled surface (16) is arranged in a transverse recess (15) in the clamping member (1).

Abstract: A jointing device primarily for scaffold or stand system, for example in exhibition show cases and the like, which system is assembled of tubes (3). The jointing device is a junction, to which one or several tubes (3) are attached, where each tube has one end to co-operate with the jointing device. A pull rod (5) comprising a T-shaped end portion (6) is provided in each tube and cooperates with a preferably substantially spherical junction member (1). The jointing device has a substantially sleeve-shaped attachment member (34) inserted within the tube (3) comprising inner stop members (35) for co-operation with stop members (36) located at the pull rod (5), so that the pull rod without axial displacement is rotatable about the axial direction in relation to the sleeve (34) in a predetermined direction, but substantially not in the opposite direction.

Abstract: A shank mounting assembly for a soil opening point permits adjustment of the spacing between a pair of mounting bolts of the assembly for permitting attachment of the assembly to farm implement shanks having bolt holes of various spacings. The assembly includes an elongated adapter having a hidden, internal cavity to which access is gained only by an elongated slot on the backside of the adapter. The cavity and slot are so dimensioned that while the bolts may move lengthwise within the slot for positioning adjustment, the enlarged heads of the bolts remain in the cavity and cannot pass through the slot. By having the cavity accessible only from the back of the adapter and by providing the front face of the adapter with a smooth, continuous, soil-engaging surface, the heads of the bolts are protectively unexposed to abrasive contact with the soil during use.

Abstract: A connecting element for the releasable connection of two structural parts of a stand, in particular a support section and a frame section, includes a housing and at least one locking element. An eccentric is rotatably supported in the housing locking element is guided longitudinally in the housing and has a clamping portion protruding from the housing to be introduced in an undercut groove of the support section and clamped therein. An eccentric head (76) of the may be locked in a bore hole of the frame section. The clamping portion of the locking element may be rotated within a limited angular range. The locking element is connected displaceably by a pulling element with the eccentric the clamping portion is a transverse bar.

Abstract: A slat-wall is fastened at an edge to an elongated member. A metallic strap is formed to have first and second end portions and a central portion therebetween. The central portion fits about the elongated member so that the first and second end portions extend into a groove in the slat-wall. A screw is tightened to separate the first and second end portions against opposite sides of the groove.

Abstract: Device for assembling the framework of a temporary exhibition stand; characterized in that the uprights (8) comprise at their top ends longitudinal slots (8.sub.3) situated in the bottom of dovetailed grooves (8.sub.1), the said slots (8.sub.3) terminating at the top end of the uprights which is adjacent the end of the top cross-member which is to be assembled and in that a hub (19) is disposed in these slots, the hub comprising at least one heel (22) disposed transversely in a dovetailed groove (8.sub.

Abstract: A releasable rail locking device for a tubular fence comprises first and second substantially identical elongate flexible legs joined at a predetermined angle to define a generally V-shaped flexibe bow-like portion elastically deformable to a predetermined range of angles about this predetermined angle. The legs terminate in respective oppositely oriented outwardly extending gripping portions for releasably grippingly engaging a wall of a tubular fence rail member about aligned through apertures therein. Each of the gripping portions comprises a body portion extending from the associated leg and an enlarged head portion extending from the body portion to define a shoulder therewith. Both the head portion and body portions as well as the bow-like portion are sized to extend the heads and bodies through the through apertures in the tubular fence rail wall while maintaining the bow-like portion in a partially compressed condition, at an angle somewhat less than the predetermined angle.

Abstract: A connector for detachably joining one profile section to another in a framework assembly comprises a housing having a bottom part and a lid connected to one another by means of snap-lock coupling elements. The housing is insertable into a longitudinal recess at one end face of a horizontal profile section. A latch is slidably disposed in the housing and has, at an end projecting from the housing, a hook for engaging an inwardly facing surface of a vertical profile section. At an end opposite the hook, the latch has a rectangular aperture traversed by a substantially cylindrical eccentric pin projecting from the housing of the connector into a transverse bore in the horizontal profile section.

Abstract: In a clamping device which serves to connect two profile section parts, in particular a horizontal beam (2), to a vertical support (1), an axially movable, spring-loaded retaining pin (7) is located at the end of one profile section part (2). The T-shaped head (8) of the retaining pin (7) engages behind a longitudinal groove (16) of the other profile section part. By means of a screw (12), which is eccentrically supported and engages in a conical recess (10) of the retaining pin (7), the retaining pin is drawn axially inwards in order to fix the two profile section parts (1, 2) to one another. For the purpose of simple assembly and to prevent the retaining pin from jumping out if the screw is rotated in the wrong direction, the retaining pin (7) has a snap-in connection to the insertion core.

Abstract: A rail and post fence structure (20) includes tubular posts (22) having a plurality of apertures (50) in the side walls thereof for receiving one end of the rails (24, 26, 28, 30). Each rail has a generally channel cross-section with a web (56) and side walls (58) extending therefrom. The side walls have flanges (60) extending inwardly. The aperture in the side walls of the posts substantially correspond with the outer configuration of the rails such that assembly is accomplished by inserting the rails into the apertures of the posts. The rails are attached to the posts by use of a separator structure for spreading the side walls of the rails. This separator structure includes an elongated clip (70) having a web (72) and a pair of legs (74, 76) extending from opposing longitudinal sides of the web for engagement with the inturned flanges of the rail.

Abstract: A vertical support member (2, 42) has one or more vertical slots (4, 44) each of which is dimensioned to receive the end of a side rail (6, 50). A portion of a lock member (12, 56) is also received into each slot (4, 44) contiguous to a side rail (6, 50). One end of a rod (18, 58) engages member (12, 56). Rod (18, 58) extends through a horizontal portion of the structure, and its second end is engaged by an adjustable fastener to pull member (2, 42) and the horizontal portion together. In a first embodiment, two perpendicular side rails (6) are received into slots (4), and a diagonal corner brace (8) extends between rails (6). Lock member (12) extends around member (2) between slots (4). A bolt (18) engages a center portion of member (12), extends through member (12) and brace (8), and is fastened by a nut (22). In a second embodiment, one rail (50) is received into a T-shaped slot (44). The lock member is a plate (56) received into the head portion (46) of slot (44).

Abstract: A scaffolding system comprises tubular uprights (10) having inwardly extending stiffening and guide flanges (23) for guiding any inserted jointing pieces and braces (15) that may be necessary, and connected with connecting beams (12) by means of bayonet joints (21, 22, 33). Such a bayonet joint comprises a hole (21) in the upright (10) and a locking hook (22) which projects from the end of the beam (12) and which, after it has been turned into its engagement position, is fixed in this position by means of a catch (35) displaceably mounted on the beam for movement into locking engagement with the upright. The inwardly extending stiffening flanges in the tubular uprights have radial recesses provided at a predetermined distance from the ends of the uprights to receive outwardly directed projections on a jointing piece insertable in the uprights.

Abstract: A seating unit that includes two side support assemblies and a plurality of lateral connecting rods which are received in mounting apertures through the side assemblies. A securing clip is received inside the hollow ends of each lateral connecting rod to prevent the side assemblies from separating. Each clip has a pair of extending legs with a locking tab that seats in a recess within the lateral rod. The lateral rods flex under the weight of a person seated on the seating unit in order to create a frictional locking force between the lateral rods and side assemblies to prevent the side assemblies from sliding toward each other.

Abstract: A framework for use as a support at fairs and exhibitions comprises section ubes connected to other tubes by means of clamp elements. Each clamp element includes a mounting portion which is longitudinally received within a longitudinal inner space of a profile tube, and a clamping portion which is received within a longitudinal external groove of another tube. The inner space has recesses for receiving the mounting portion in different orientations. The recesses are arranged in sets whereby when the clamping element is in one set of recesses it is oriented in one manner, and when in another set of recesses it is oriented in a different manner.

Abstract: A connector system for interconnecting members used in forming various types of framing structures is disclosed. The connector is insertable in the hollow portion of the first member and when actuated, interconnects the two members together. One of the members has a slotted wall portion provided with opposing ledges. The connector, as secured in the second member, engages the ledges when actuated to snugly secure one member to the other. The connector is actuated by a cam inserted through an opening in the wall of the second member, such that when turned to a second position, engages the wall to force the connector further inwardly of the second member to draw together and snugly secure the two members. This type of connector is particularly useful in interconnecting frame members used in forming office partition walls, display panels and the like. The connector is releasable to allow dismantling and reuse of the connectors and the structural members thereby providing portability of the system.

Abstract: A connector of structural parts such as beams with a through-going wooden pillar is disclosed. The connection consists of a first plate having a hook and being fastened to the beam in a torsion free manner. This hook has an essentially horizontal supporting area at the lower end and at least one vertical contact area. A second cross-shaped support plate is disposed in a pillar and its vertical plate portions are in one plane with the first plate. The second plate includes fitting areas which mate with the supporting area and the vertical contact area of the hook. The pillar is connected by means of a wedge-shaped tenon joint below the supporting area of the support plate.

Abstract: A first tubular member having an axially extending central cavity with opposed substantially flat walls receives through its open end a connector which is adapted to be clamped against the opposed flat walls and to secure the end of the first tubular member against an exterior wall of a second tubular member which has a laterally directed undercut recess in a side wall thereof for engagement by corresponding portions of the connector. The connector has first and second substantially rigid legs with respective head portions with inclined surfaces which engage in the undercut recess in the side wall of the second tubular member so as to pull the tubular members together and hold them in the desired position; the rigid legs have respective tail portions at the opposite ends thereof from the head portions, and a connecting element has means for biasing apart the rigid legs and interconnects said tail portions and by virtue of recesses for receiving in push fit interengagement said tail portions.

Abstract: A connector designed to form a butt joint between two channel profiles, or between one such profile and some other member, comprises an elongate wedge piece with flanks diverging downwardly toward the channel bottom and a spring clip with similarly diverging legs having serrated lower edges and straddling the wedge piece over part of its length. A central web of the spring clip, spacedly overlying the top surface of the wedge piece remote from the channel bottom, terminates in a tongue whose tip enters a slit in that surface which it approaches at an acute angle of inclination.

Abstract: This is a device for connecting the front ends of two horizontal struts at a post by inserting plates with teeth into slits in the ends of the struts and a plate with pockets into a slit that goes through the post. Such device is useful, for example, for a piece of garden furniture made up from horizontal and vertical parts. The strut plates have protruding wedge shaped teeth that point downward. The post plate has pockets on each side that correspond in shape to the teeth which are inserted therein.

Abstract: A joint of the type made between two elongated frame members and including also a connector member releasably coupling the two frame members tightly one against the other. This joint is characterized by its exclusion of special machining and construction of the components, by the connector member being unconspicuously concealed and by the possibility of assembling one frame member in any angular relationship about its longitudinal axis relative to the other frame member.

Abstract: A connector for the interconnection in generally perpendicular array of generally C-shaped elongate structural members having a pair of flanges integrally and perpendicularly connected with the web portion thereof in which said flanges each include a flange return edge which extends inwardly of the generally C-shaped channel, which connector, upon the assembly of said interconnection, provides strengthening of the webs of each said C-shaped structural member, and a floor assembly comprising said connector and said generally C-shaped elongate structural members.

Abstract: A structural joint for a space frame having connecting members or nodes and tubular structural member is provided in which the shank of a connecting bolt, whose head is located within the hollow end portion of the tube, extends through an aperture in the tube end for engagement with a threaded opening in the node. The tube shank has a longitudinally extending keyway formed therein in which a key is slidably received. A nut or sleeve having an unthreaded inner bore receives the bolt shank and has an internal keyway which receives a portion of the key to rotatably lock the nut and bolt together so that the nut may be rotated to rotate the bolt and engage its shank in the threaded opening of the connecting member.

Abstract: A connector hub made in a single integrally cast unit for connecting the ends of the stringer frame members of a geodesic dome structure, said hub being characterized by a plurality of pairs of spaced apart flange elements defining stringer receiving slots arranged in generally radially extending relation around the central axis of the hub unit with stiffening web elements disposed between adjacent slots, to provide an extremely strong and rigid connector hub for the stringers which is also specifically designed to abut the ends of the stringer elements to provide additional rigidity for the stringer connection.

Abstract: The connector is intended for beams having longitudinal, undercut grooves, the coupling elements engaging in these grooves. It consists of coupling elements that can swing freely in the transverse plane of the groove; these coupling elements have hook heads, the head thickness of which, taken in total, is less than the width of the entry of the groove. They are pressed into contact with the two opposing walls of the constricted entry of the groove by an adjuster; the adjuster is installed in one coupling element in such a manner as to be adjustable by external action. The pressure exerted by the adjuster can be transmitted to the other coupling element through a spring. Equalized contact pressure on the walls of the groove is achieved by the coupling elements.

Abstract: A pipe connection, and method for forming said connection, wherein one pipe is connected at an angle to the side of a second pipe, said connection forming a structural joint and not a flow passage; a first pipe has a cylindrical opening formed in its side while a second pipe has one end contoured to fit against the side of said first pipe over said opening; said second pipe has a locking member fixed to the interior thereof with a projection which fits into the opening in said first pipe with said projection having a stem extending therefrom having an enlarged head which projects into the interior of said first pipe; a holding clip is positioned between the underside of said enlarged head and the inner surface of said first pipe forcing the contoured end of said second pipe against the side of said first pipe.

Abstract: For mounting a pin on a supporting member, an axial bore is formed at one end of the pin having a stopper edge, while the supporting member has a throughhole through which the pin is inserted. A radial throughhole is formed in the pin at a position spaced from the stopper edge by a distance slightly greater than the thickness of the supporting member, the radial throughhole having an inner end open to the axial bore. A hairpin-like latch spring has two bifurcated legs which are inserted into the axial bore. One of the legs has a free end portion bent so as to be able to extend through the radial throughhole and project for a predetermined length when the spring legs have been fully inserted into the axial bore. The pin is mounted on the supporting member axially immovably through cooperation of the stopper edge and the projecting free end portion of the spring leg.

Abstract: The bone implant is made from elements which have different mechanical properties and which are maintained out of contact from each other by means of a plastic member. The plastic member is disposed in and fills a gap formed by the implant elements. In addition, the plastic member has thin-walled extensions which are engaged in narrowing sections at the outer boundaries of the gap. These extensions guard against any creep in the plastics member under the forces imposed on the plastics member during stressing of the bone implant.

Abstract: A connector designed to couple a C-profile bar of synthetic resin or the like with another structural member comprises a shank terminating in a hammerhead which fits sideways into the slot formed by the C-flanges and is then rotated through 90.degree. within the channel of the profile. A point carried on a transverse surface of the hammerhead, remote from the shaft, digs into the channel bottom upon such rotation as a pair of ramp faces on an opposite base surface coact with the C-flanges to cam the hammerhead more deeply into the channel whereby the connector is secured against longitudinal shifting in the profile.

Abstract: A connector assembly includes a hollow rectangular tubular member having keyhole apertures therein with large rounded upper head portions and narrow rectangular neck portions. A cylindrical connector has an axially extending projection at one end with a square neck and circular head which are respectively matable with the neck and head portions of the keyhole aperture for non-rotatable mounting therein. The connector has a radial internally threaded bore for receiving a rod to support associated structures. The connector may be mounted in any of four positions so that the rod extends up, down or laterally. The connector has circumferential and longitudinal grooves to facilitate holding in telescoping relation thereover an associated hollow cylindrical sleeve, which may additionally be locked in place by a setscrew received through the sleeve and into the bore.

Abstract: A device for rapidly fixing a connector in openings formed in a wall, comprising on the one hand, in an insulating block (1) of the connector forming the socket, a recess (2) which opens onto the lower surface opposite the opening in the wall and which is provided with anchoring lugs (61) and (62) and, on the other hand, an elastic fastener with two hooks (6) and (7) arranged parallel to one another in the manner of scissor blades, the fastener being anchored in the recess (2) by the penetration of lugs (30) into the gaps (63) (64), where they are held by the elasticity of the assembly zone (15).

Abstract: A fastener for use in display stands and partitions is provided for securing a pair of elements one to the other. One element is provided with a slot and the fastener is secured to the remaining element.The fastener is generally hook-shaped and is provided with a cam surface which engages with the rear surface of the slotted element to effect engagement. In an alternative embodiment, the fastener has two projections which engage the adjacent surface of the slotted element to urge the two elements together through the opposing action of the hook member projections and the surfaces with which they abut.

Abstract: A system of posts and struts with which a variety of different decorative and utilitarian merchandising display assemblies are made, and display accessories for the assemblies. The posts are hollow and have a plurality of angularly spaced longitudinal grooves with slotted bottom walls, and the struts have mounting brackets adjacent their ends for engagement with the slotted bottom walls, and screw mechanisms for tightening and locking the brackets. The grooves are bounded by longitudinal ribs against which the struts abut, and similar grooves and ribs are provided on the struts to receive panels, both the struts and the posts being covered, between the ribbed grooves, with decorative sheet material. Accessories such as hangers and shelves are mounted on the posts with brackets insertible in the slotted grooves and extending out for supporting engagement with the accessories.

Abstract: An arrangement for supporting a railing provided with a T-shaped groove and a slot communicating with the groove comprises a hollow supporting member and a T-shaped clamping element. The clamping element includes two clamping members each of which members has a first portion insertable in the hollow of the supporting member and a second portion insertable in the T-shaped groove of the railing. The clamping members are movable relative to each other in the longitudinal direction of the supporting member. The first portions of the clamping members are elongated in a direction of elongation of the supporting member, whereas the second portions are formed as pin-shaped projections each having an axis. The pin-shaped second portion of one of the clamping members is offset relative to the pin-shaped second portion of the other clamping member in a direction transverse to the axes thereof and to the elongation of the first portion.

Abstract: Disclosed is a method of interlocking the rails of a railing, fence or the like with the ends of the hollow posts thereof. Also disclosed is the joint construction used with said method. The method and the joint construction make possible easy interlocking without the use of rivets, bolts and nuts, or welding and can be effectively applied to the assembling of tubular railings made from aluminum by extrusion molding. When the joint is to be provided between a post and a rail base which passes over or under one end of the post, a stud having a head is pushed through a hole provided in the rail base into the end of the hollow post and a self-tapping screw is threaded into a gap between the stud and the inner wall of the post to fix them. The shape of the stud head is made such that it does not obstruct the threading of the self-tapping screw.

Abstract: Connection members for constructional systems based on two extruded sections, one having an undercut channel formation along one face, and the second section have two such channels along one face, are characterized by having a base member which fits into the single channel formation of the first section and a spaced pair of parallel side members which fit in the two channel formations of the second section to be connected to the first, securement of the correction member to the two sections joining the sections together.

Abstract: A well installation, such as casing, tubing, a line movable in the well, and surface equipment, consists of high strength, light weight, non-metallic material.

Abstract: A joint between a member having an inwardly lipped, channel-shaped cross section and a hollow rail comprises a connection including a key portion which has a head with inclined engagement surfaces located between the sides of the channel-shaped member which also includes engagement surfaces having a corresponding inclination, a clamping device engaging means on the connector to urge the engagement surfaces of the head of the key portion into locking engagement with the surfaces on the lips so that the lips are prevented from splaying apart when the joint is stressed, the connector also including a tongue portion extending away from the key portion and having a threaded hole at the base of a ramp surface, the tongue being inserted into the hollow rail.