Abstract: A flush capped bolt system for attaching a plastic liner to a substrate includes a cap with a radial sealing skirt that seals against the walls of a counterbored recess at the liner surface. In the preferred embodiment, a squared portion on the bolt shank deforms a liner opening to provide a nonrotatable engagement, and there is a plastic wear washer to accommodate lateral movement allowed by an oversized substrate opening. The system is readily adapted for field installation using conventional tools.

Abstract: A feature of this invention is the provision of a quick disconnect and connect mechanism for the transmission of torsional power between two concentric shafts including a collar, spring means which biases said collar to a first disposition whereat it holds at least one element in a position interlocking said two shafts, and cam means for converting torsional movement of said collar to axial movement of said collar against the bias of said spring means to translate said collar to a second disposition whereat said element is free to unlock said two shafts.

Abstract: A coupling device adapted for use with floor maintenance machines of the type such as floor brushing, buffing, polishing, scrubbing or the like which enables automatic coupling of the maintenance element (i.e. brush, buffing disc or the like) without direct manual implementation thereof. The device includes an annular plate member having a circular opening adapted to receive a circular mounting flange carried by the machine drive shaft with the drive shaft having radially projecting lugs which are adapted to pass through radially extending arcuate recesses formed in the plate member so as to lockably engage behind the plate member. On one side of the plate member a first series of inner peripheral cam-like ramps communicate with one end the arcuate recesses and on the opposite side of the plate member a second series of inner peripheral cam-like ramps communicate with the opposite ends of the arcuate recesses.

Abstract: A framework for supporting a horizontal arm at one of a plurality of locations from a vertically extending member having a plurality of vertically separated openings, each of which can be aligned with a similar opening in one end of the arm. A pair of triangular section cotter pins extend through the aligned openings with the hypotenuses in contact and the other two dimensions being less than the corresponding opening dimension so that after pin insertion, downward movement of the arm, misaligning the opening, locks the arm to the member.

Abstract: A friction connection is formed between an annular member such as a wheel, pulley or the like and a shaft by at least one annular wedge which clamps the annular member to the shaft by translating axial pressure from wedge-tightening screws into radial clamping forces. According to the invention, the annular member is provided with a groove centered on the axis of rotation and receiving an open measuring ring at least partly slidable in the groove, the relative spacing of the ends of which serves to indicate the radial clamping force.

Abstract: In this device, the bore of the cylindrical hub has a groove in the shape of an ellipse in which is engaged a radial boss obtained by an upsetting of the material of the end portion of a tubular element inserted in the bore so as to ensure both the axial and rotational connection with the hub. The upsetting is achieved by means of a punch inserted in the end portion of the tubular element and bearing against the extremity of this end portion.

Abstract: Corrugated panels are intercoupled by a male and a female connector, each having a part received in its respective panel. The female connector has a U-shaped receiving volume, with a receiving slot in the front portion. The male connector has a pair of flanges connected by a rib. When assembled one flange is inserted in the receiving volume, and the rib is in the receiving slot. Two female connectors can be mated, by inverting one and inserting a part of its front portion into the receiving volume of the other female connector.

Abstract: A coupling for two tubes forcibly engaged one into the other, the two tubes being substantially of the same sections while the female tube is engaged into a sleeve or an opening whose diameter is little larger than the outside diameter of said tube. Thus, the female tube is crimped or banded in the sleeve or opening while the male tube is forced to contract. This assembly means may be used for making balustrades or ladders or assembling various members which are fixed with respect to the tubes or the ring.

Abstract: A releasable locking device for pivotally locking two members to one another. The locking device includes a hollow support assembly extending through an opening in one of the members. A locking member extends through a bore in the hollow support assembly and is formed with an enlarged locking portion insertable through an interior portion of an opening formed in the remaining member. The locking member includes a conically-shaped guidance surface for automatically aligning the enlarged locking portion with the interior opening in response to a biasing spring acting on the locking member.

Abstract: There is disclosed a new and improved swivel connector assembly for connecting a member to be pivoted to a pivot. The assembly includes just two components which may be readily assembled, a socketed assembly and a retaining sleeve. The socketed assembly has a forward portion including a socket forming a bearing seat and a rearward portion having a cylindrically shaped socket. A slot which extends from a point forward of the bearing seat center to and through the rearward portion to form bifurcated opposed socketed portions which may be separated to enlarge the bearing seat and cylindrically shaped socket to permit ready assembly of the same to a pivot ball and a member to be pivoted. The sleeve is arranged to be axially slid over the socketed rearward portion to thereby maintain the assembly in assembled relation.

Abstract: A multiple part tapered collar for use in a wedge anchoring system for a tendon in a structural concrete member usually consists of three coextensive elongated parts combined to form an axially extending annular component. The inner surface of the collar bears against the surface of the tendon, for instance, a wire, rod or the like, and its outer surface contacts the surface of a frusto-conical bore in an anchoring member. A groove is formed along the axial length of the outer surface of at least one of the parts of the collar for passing neat cement or a similar substance for enclosing the tendon. As a result, openings through the anchoring member, which are expensive to form and tend to clog, are unnecessary.

Abstract: A method and apparatus for producing a pipe connection are disclosed. The apparatus includes an inner pipe formed on the pipe to be joined which has a widened end part. An outer pipe in the pipe connector is dimensioned to receive the inner pipe and has an undercut formed therein to receive the widened end part. A sleeve is mounted inside the inner pipe with a close tolerance so as to be substantially free from play. The sleeve has a widened wedge-shaped portion which engages the inner pipe internally. As a result, the inner pipe is retained between the undercuts and the wedge-shaped portion of the sleeve.

Abstract: Bed frame members are provided for quick, snap-together, interlocking assembly for preventing relative rectilinear motion between members without loose or screwthread parts. One member has a first slot with an enlarged retaining portion and a mating member has a projection thereon for entrance into the slot. The projection carries a Belleville washer having its conical convex face disposed for engagement with the slot for compression as the projection moves thereinto and for retaining engagement with the periphery of the enlarged retaining portion of the slot when the projection has been fully inserted in the slot. A second slot in one member has a portion disposed at a substantial angle to the first slot and receives a second projection disposed on the other member.

Abstract: An extensible and retractable rod comprising an outer tubular section and an inner section of substantially constant outside diameter telescopically received in the outer section for extension and retraction relative thereto. The outer section has a first internal shoulder spaced from but relatively close to one end of the section, and a second internal shoulder spaced substantially farther away from said one end, said outer section being dimensioned to have a first inside diameter between said one end of the section and the first shoulder, a second inside diameter greater than the first between the first and second shoulders, and a third inside diameter greater than the second between the second shoulder and the other end of the section. The first inside diameter of the outer section is dimensioned for a relatively close clearance fit between the sections, and the second inside diameter of the outer section is dimensioned for a relatively loose clearance fit between the sections.

Abstract: A method forming, in a simple manner, corner joints or the like in structures, such as articles of furniture incorporating panels of chipboard. A typical corner joint is formed using a connecting member in the form of a length cut from an extrusion of constant cruciform cross-section. Adjacent edges of two panels defining the corner are secured in respective diagonally opposite channels of four V-section channels defined by the extrusion, one of the two remaining channels which faces outwardly from the corner being occupied by a filling member. The longitudinally extending edge faces of the two webs of the cruciform cross-section which extend outwardly may be flush with the adjoining outer surfaces of the panels and the filling member to present the appearance of inlays.

Abstract: A frame joint construction comprising at least one pair of moldings which each have at least one of a longitudinally extending groove and a longitudinally extending tongue, and an angle unit having a stiffening plate with at least one of a tongue and groove engaged into the longitudinally extending groove or longitudinally extending tongue of the molding respectively to connect the pair of moldings together. The moldings include a flange extending inwardly of the frame which cooperates with portions of the stiffening plate which also extends inwardly of the frame which cooperates with portions of the stiffening plate which also extend inwardly of the frame to support a picture or the like therebetween.

Abstract: A force or load transmitting connecting element is provided at its ends w bolt eyes for receiving bolts which secure the connecting element to another structural component also provided with complementary bolt eyes or for securing a wing to an aircraft body. The bolt eyes must be capable of taking up compression and/or tension loads. For this purpose at least one reinforcing bridging web is located between at least two bolt eyes. The bridging web extends with its main plane perpendicularly to the central axes of the bolt eyes and loops at least partially around at least one of the bolt eyes. The bolt eyes are constructed as metal bushings. Thus, the bridging web braces the bolt eyes relative to each other.

Abstract: A joint assembly between structural members having plate portions includes an eliptical opening through the plate portion of a first member and a notched locking plate portion on a second member. The latter plate portion is introduced through the eliptical opening parallel to the major dimension thereof and is then rotated 90.degree. to a locking position parallel to the minor dimension of the opening, whereby the notches interengage with the first plate portion to restrain separation of the two structural members. Resilient spring clips are mounted on the first plate portion outwardly adjacent the eliptical opening in the direction of the minor dimension thereof to releaseably engage the second plate portion against rotation when the latter is moved to the locking position. In another embodiment, a composite beam is assembled from a plurality of structural members having plate portions provided with eliptical openings therethrough.

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 head flange mounting device for mounting a head flange on a casing in a turbo-machine, such as a centrifugal compressor, is disclosed which includes a plurality of slide keyways formed on the inner surface of the casing and on the outer circumferential surface of the head flange in such a manner that each slide keyway formed on the casing and each slide keyway formed on the casing and each slide keyway formed on the head flange are in juxtaposed relation to form a pair of slide keyways. A slide key is held in each pair of slide keyways so as to keep the center axis of the head flange in alignment with the center axis of the casing at all times.