Abstract: This invention relates to an improved releasable locking connector particularly adapted for use in connection with a display apparatus. The connector includes an elongated base which has one end adapted to be secured to a member of a display apparatus and the other end of the base is free. The base has a catch aperture formed on the base adjacent to the free end. A stop is formed in the base adjacent to the end adapted to be secured to a member of a display apparatus. A holding strap is formed integral with the base between the stop and the catch aperture. A catch is mounted on the base. The catch includes a resilient flat beam having one end positioned in engagement with the stop and being positioned between the strap and the base. The catch has a dog formed integral with the end of the beam opposite to the end abutting the stop. The distance from the edge of the beam abutting the stop to the dog is substantially equal to the distance from the stop to the catch aperture.

Abstract: A screw fixing comprising a screw (9) having a nut (1) threaded on it, the screw head and the nut each having a bearing surface facing the other, and a channel (5) having at the free ends of the limbs of the channel inturned flanges (6) directed towards the base (8) of the channel, the flanges defining a slot (10) which is open at both ends, at least one of the flanges having teeth (7) in its free edge directed towards the base of the channel and the bearing surface that engages it having parallel ribs (4) that interlock with the teeth to prevent the screw and nut sliding longitudinally in the channel.

Abstract: A corner bracket assembly is adapted for mounting and support of a newel or post and comprises a plurality of corner brackets each having oppositely directed flanges at its lower edge for attachment to a rigid member, such as, a floor surface so as to form an upstanding receptacle for insertion of the newel, and exterior molding or trim forms a cover in surrounding relation to the corner brackets and base portion of the newel.

Abstract: A connector assembly for a scaffold structure having an upright member or standard and a cross member, comprising an open-ended V or channel-shaped socket fixed to the upright member and a channel-shaped connector member fixed to an end of the cross member. In the fully assembled position, a base flange of the connector member is held, by means of a wedge element, in tight engagement with the outer surface of the socket and arms extending outwardly from the base flange, and over opposite ends of the socket, are such as to be spaced from the outer peripheral surface of the upright member. For location purposes, the free end of the uppermost arm of the connector member is formed with a downwardly depending tongue, or alternatively, the side edges of the uppermost arm are provided with downwardly depending flanges.

Abstract: A coupling system is described for the detachable assembly of two building elements, the first having a slot for receiving the head of a lock bolt and the second having an elongated cavity for receiving the shank of the lock bolt; and a lock assembly comprising an elongated casing adapted to fit within said cavity, the inner portion thereof being provided with an insert body movable in a direction lateral to said casing and the innermost portion thereof being provided with a leaf spring engaging said insert during assembly of the system, the insert body being provided with a central axial opening for receiving said lock bolt shank and a threaded bore connecting an outerface thereof and said central opening for receiving a locking screw for said bolt and an annular projection on said outer face surrounding said threaded bore for engaging a hole provided in a face of said second building element.

Abstract: A multi-part connector for use in constructing a wooden deck or the like. The connector comprises identical, stamped metal elements which cooperatively embrace the upper end of a vertical post and project above the post to cooperatively receive a lateral beam therebetween. The elements each have an inwardly directed flange which is either (1) partially embedded in the upper end of wooden post or (2) engages and centers a metallic pipe post between the elements. An additional apertured plate is provided for cooperation with the two elements for securing the elements together in spaced relation to the element flanges and in embracing relation to the pipe post without bolting or otherwise securing the elements to the post. In use with either a wooden post or a pipe post, the beam overlies and bears upon the flange to aid in retaining the connector elements in place. The method involves the steps of assembling the connector elements on the post and utilizing the beam to retain the elements in place.

Abstract: A bag filter apparatus that exhausts a blast of compressed air into the open ends of a series of filter bags to remove dust particles that have collected on the outer surface thereof. The compressed air is exhausted from nozzle means in a header pipe that is precluded from excessive distortion, while it may be quickly disassembled and accurately re-assembled to achieve optimum performance.

Abstract: The fastener comprises a sheet metal plate bent to provide two or more angularly related planar plate portions. One of the plate portions has a plurality of elongated nail-like teeth struck therefrom for embedment into one of the joint members. The other plate portion or portions have a plurality of elongated teeth each comprised of angularly related shank and tip portions. The shank portions extend from and form an included angle with such other plate portion. The tip portions extend from the shank portions in a direction toward the plate portion from which the tooth is struck and are poised for insertion through the respective slots for embedment into another of the joint members. Inside and outside connectors are formed depending upon the orientation of the teeth in the plate portions.

Abstract: A connector for an elongate member in frame structures such as seating, scaffolding and the like, in which an elongate member is removably secured to another member to extend therefrom in selected angular relation. The connector includes a lug on one member and extending therefrom and shaped to be received inside of a tubular end of a second member with the lug and a partition in the second member having facing surfaces at an angle to a line on which the second member extends from the first member with fastening means drawing the partition toward the lug to clamp the adjacent end of the second member to the first member, the tubular portion of the second member having an opening adjacent the fastening member for access thereto, the engagement of the second member with the lug and first member and the relation of the partition to the lug cooperating to orient and fix the second member relative to the first member.

Abstract: Easily assembled structures formed by light weight members that are readily and securely joined using a compressible clip. The clip is attached to partially embrace one member and project from it for axial insertion into another member. The inner walls of the latter compress the clip and form the desired junction between the two members. The assemblage can be mounted vertically using elongated hooks.

Abstract: A fence railing end connector formed of a strip of sheet metal. A wave or kink is formed intermediate the ends of the connector, the wave forming a ledge to support a railing end. The strip is first attached at its mid portion to an end of the railing, the strip ends then attached as by nailing to an upright fence post.

Abstract: A rectangular channel member has coplanar spaced-apart wall portions defining a slot therebetween and each having a flange extending from the slot inwardly of the channel member and away from the other wall portion at an acute angle. A generally U-shaped connector is disposable within the channel member across the slot and includes rectangular recesses receiving the flanges therein. A threaded fastener engageable with the connector extends through the slot for engagement with a support member, tightening of the fastener causing deformation of the flanges by the connector for wedging the flanges in the connector recesses. The support member may constitute a bracket for coupling the channel member to another channel member, several different bracket constructions being disclosed for coupling to different types of channel members and for different orientations of the channel members.

Abstract: A rung assembly has an overall length just short of the spacing between a pair of posts to permit it to be positioned therebetween, after which the assembly can be mounted on the posts by means of axial bolts at the ends of the assembly.The bolts are so housed by assembly end fittings that rotation of the fittings not only rotates the bolts but facilitates their outward axial movement as demanded by their engagement with the posts.The assembly is of adjustable length to facilitate mounting it on variously spaced posts.

Abstract: A display structure having a vertical post and a horizontal rail. The post has a salient side wall with a socket opening therein. The rail has a notched end with a peg projecting therefrom and engaged through the socket opening, thus to support the rail from the post with the notched end of the rail embracing the salient side wall of the post and preventing the rail from twisting with respect to the post.

Abstract: This invention relates to an improved connector for continuous beam welded steel structures characterized by a step with a sloping riser formed at the juncture between the horizontal and vertical legs of a one piece generally L-shaped member, the aforesaid step defining a spacer effective to limit the approach of the bias cut end of a beam resting atop the horizontal leg thereof to one of a minimum spaced relation alongside the web of a girder or column. The sloping riser of this same step cooperates with the oppositely-sloped bias cut beam end to define a flared groove sized, located and shaped for the essentially vertical placement of a full penetration butt weld by means of a welding rod located in minimum spaced relation alongside the web of a girder or a column.

Abstract: A leg is coupled to one half of the connecting structure, e.g. a detachable seat, via screw engagement and the latter is coupled, via wedge engagement to be established by projections formed thereon, to the other half of the connecting structure, e.g. a fixed seat, mounted to the bottom of a massive body such as a keyboard musical instrument, a larger sized television set and a heavy table. Registration of the leg at the correct position and the above-described wedge engagement are carried out simply by sliding the one seat against the other seat with alleviated trouble in the collimation work, reduced damage on the thread construction and stabilized support for the massive body.

Abstract: A set of components for producing load-bearing scaffolds comprising profile bars and connecting bars each having an approximately .SIGMA.-shaped cross-section with a flat center web section. The connecting bars fit slidably in the profile bars to which they are attached by connecting means through perforations in each of the center web sections. The profile bars also have an inwardly angled free arm extending parallel to the center web section and having perforations to provide for connection of further components to the profile bars. Further components adapted for use with the above profile bars comprise fixing angles, packing pieces, cross-member brackets, reducing elements, bearing hole plates, angle elements and belt guide plates.

Abstract: Apparatus and method are disclosed for connecting horizontal beams to vertical surfaces of supporting structures. Two slidingly interconnecting elements are affixed, respectively, to a vertical surface of supporting structure, and an end of a horizontal beam and then positioned for positive stable coupling. The joint created by the elements is filled with grouting to substantially prevent movement of one element relative to the other element.

Abstract: A pivotable joint adapted to join an upright of metal railings to a top or bottom rail of the railings. The pivotable joint comprises a first member attachable to the top or bottom rail. A second member adapted to be attached to the uprights and a pivotable link between the first and second members. The joint permits substantial savings in the construction of metal railings.

Abstract: An integrally formed backless U-shaped rail-supporting bracket for use in constructing fences, which can be nailed to a fence post with three nails, thus eliminating the need to make a hole in the post or nail the rails to the post. The depth of the bracket is sufficient to hold rails inserted at an angle without mitering up to 20.degree. and with approximate angle mitering for more than 20.degree..

Abstract: Fittings for connecting columns and beams of a steel frame construction, each comprising a substantially rectangular base plate to be connected to the column by means of high strength bolts and having centrally a horizontally continuous thicker portion from which the base plate is tapered toward upper and lower edges, a horizontal protrusion projecting from the thicker portion in opposition to a flange of the beam and vertical protrusion in opposition to a web of the beam and projecting from the base plate to form with the horizontal protrusion a T-shaped protrusion.

Abstract: Fittings for connecting H-shaped beams and columns of a steel frame construction, each fitting comprising an L-shaped outer fitting member connecting an outer surface of a flange of the beam to the column by means of bolts and an L-shaped inner fitting member connecting an inner surface of the flange of the beam to the column by means of bolts having a space for receiving therein a web of the beam, thereby embracing the flange of the beam between the L-shaped outer and inner fitting members to provide two surface frictional engagements. A column side plate of each the L-shaped fitting members successively increases its thickness from a free end to a portion connected to the beam side plate thereof.

Abstract: Building frame elongate structural elements are provided having at least cavity which in transverse cross section has a mouth permitting access to said cavity, defined by a pair of opposed flanges which have first portions extending toward each other across the mouth and second portions extending inwardly of the cavity from said first portions and terminating at free edges so as to leave to each side of the mouth an undercut space which is behind the first portion and laterally outside the second portion, the said second portions of the flanges being deformable. Fixing members for combining said structural elements are also provided. The fixing members and structural elements are useful in making building frames from a plurality of the structural elements.

Abstract: An improvement on the end plate shear connection (Table IX, Section 4-57, Seventh Edition A I S C Manual of Steel Construction) in which the end plate has an integral stem plate at right angles to the end plate and offset from the center line of the end plate to compensate for the web thickness of the beam to which the end plate is to be connected. The end plate is secured to the web of the beam by a shop weld with the weld adjacent the end plate fully penetrating the web, the stem plate and the end plate. Before welding, the stem plate is clamped to the web and minor adjustments made so that when welded the finished length of the beam will be proper and the end plate will be properly located and aligned with the center line of the beam. The end plate - stem plate unit is prefabricated in stock sizes. The unit may be a rolled shape. The stem plate may be joined to the end plate by a single fillet weld at the junction between the stem plate and the end plate remote from the web.

Abstract: A system of structural members comprising a basic structural member having secured to opposite sides thereof a pair of corresponding plates which extend outwardly from the sides of the basic structural member, and are adapted to enable two secondary structural members to be secured thereto by means of releasable fasteners, and at least one further structural member having an end provided with two opposite recesses shaped to allow said end to fit between the plates with heads of any fasteners abutting the plates on the insides thereof located in the recesses, this end further having a flange for securing it to the basic structural member.

Abstract: An antenna coupling enabling the antenna to be quickly detached but incorporating a lock to forestall theft.

Abstract: The device described enables hollow, basically rectangular sections to be joined together either orthogonally or end-to-end and also to be joined to floors, ceilings, beams and the like. The device is a piece of extrusion basically U-shaped in cross-section which fits neatly into extrusions and by means of flanges with threaded grooves can either be connected directly to the extrusion or by drawing a bracing web into the grooves. The connecting piece is then joined to the other component or floor etc either by means of tightening the bracing web screw or by means of a flat metal plate which fits neatly into a groove in the main web of the connecting piece being secured there by screws and then screwing this plate, which projects out of the connecting piece, to the floor, ceiling etc. Provision is also made for a sealing agent which accommodates dimensional differences due to tolerances or dilation and also prevents transmission of sound.

Abstract: A wood framing hanger including an angle element having a top flange adapted for connection to the top side of a wood structural member and a lower depending flange formed at a substantially right angle. The hanger also includes a stirrup element having a seat and right angularly related side flanges. The stirrup flanges are one half the width of the seat and welded at their upper edges to the depending flange of the angle element. The top flange angle element is formed with nailing tabs at one end and a welding tongue at the other end. The top flange configuration is devised as a nested progressive for high production automated tooling. Likewise the stirrup element is designed for high-production automated tooling and any size may be made from the same single die system using different width coil stock.

Abstract: A print disc and guide are configured so that the print disc can be mounted on a driving shaft transversely to the shaft axis. Removal and replacement of the print disc are thereby facilitated.

Abstract: A device for laterally interconnecting structural members such as beams and columns. The device comprises a plate with a face and a circumscribing edge, at least one slot extending inwardly from the edge and at least one stud extending outwardly from the face of the plate means. Two such plates, one inverted, fixed to a pair of structural members, are interconnected by passing them contiguously and in parallel to have the stud of one plate enter the slot of the other plate. Preferably there are two parallel slots and two studs in the plate means, the closed ends of the slots and the studs forming a rectangle. In an I-column the upper portion of the flange may be used as one plate and below the upper portion of the column the plate may take the form of a bracket.

Abstract: A coupling assembles structural members at least one of which has an opening and another of which has grooves extending along its outer surface. The coupling has two yieldably spaced body portions inserted within the opening of the one structural member. Each body portion has a claw which protrudes from the opening in the one member and is received in a groove of the other structural member. A fastener extends between the yieldably spaced body portions for moving the body portions until each claw grips a side of the groove in which it is received to assemble the structural members. The fastener also connects the structural member having the opening to the coupling and the claws and grooves have cooperatively inclined gripping surfaces for drawing the one structural member into firm butting engagement with the other when the claws grip the grooves.

Abstract: Fittings for connecting columns and beams of a steel frame construction, each comprising a base plate to be connected to the column by means of high strength bolts and formed centrally with a horizontal protrusion on the side of the beam and a horizontal plate extending from the horizontal protrusion adapted to be connected to the flange of the beam in overlapping relation by welding or bolting, a thickness of which horizontal protrusion at its bottom is more than that of the flange of the beam.

Abstract: An interlocking construction arrangement for coupling together two members at a predetermined angular relationship. A male joining means is coupled to the first member and has an outwardly upstanding male portion extending from the first member at the predetermined angular relationship. A female joining means is coupled to the second member and the female joining means has walls defining a male portion receiving cavity. When it is desired to join the two members together the male portion is inserted into the cavity of the female joining means where it may be frictionally retained to provide a removable coupling between the members or bonded or otherwise secured together to provide a permanent coupling of the two members.

Abstract: Fittings for connecting columns and beams of a steel frame construction comprise an upper flange fitting and a lower flange fitting. The upper flange fitting comprises a substantially rectangular base plate to be bolted to a web of the column and protrusions extending from the base plate to be welded to an upper flange and a web of the beam. The lower flange fitting comprises a substantially rectangular base plate to be bolted to the web of the column and a horizontal plate projecting from the base plate to be bolted to a lower flange of the beam.