Abstract: A bicycle speed change lever comprising: a stationary support spindle having an internally threaded axial hole and fixed at its one end to a bicycle frame tube, a lever handle rotatably mounted at its hole end portion on the support spindle, a plurality of washers supported on the spindle, a clipping holder which has a pair of axially spaced, holed disk-like portions resiliently connected to a cross arm and which is non-rotatably mounted on the spindle, with the washers and the holed end portion of the lever handle sandwiched between the pair of disk-like portions, to hold them together by pressure, and a lock bolt having its threaded shank engaged with the threaded axial hole of the spindle for applying adjusted frictional force to the holed end portion of the lever handle.

Abstract: A cycle accessory, for example a double lever 2, 3 for controlling a derailleur, is carried by a support 4 defining a fixing tab 11 received and wedged in a cavity of complementary shape which may be defined by a part 1 of the frame and a bridge member 14 brazed on the frame. The arrangement is such that, when a force is exerted on the accessory in the course of use, this force tends to increase the wedging between the fixing tab 11 and the cavity. Applicable to any accessory for a cycle.

Abstract: Device for assembling a first and a second construction element (4, 5) comprising a tie piece (15) fitted to slide in a recess (11) in the first construction element (4) and having at its end lying outside the said recess (11) at least one rib (18) projecting laterally and one pin (27) installed in a lateral recess (13) of the first element (4) and having an eccentric portion (31) entering a transverse passage (27) in the said tie piece (15), with the second element having a flange (50) that can be clamped between the end rib (18) of the said tie piece (15) and the wall of the said first element (4) when the said pin (27) is rotated in order to hold the said construction elements assembled.Application of this assembly device to the construction of furniture.

Abstract: A releasably engageable builders scaffolding assembly comprises an upright member, cross members and brace members wherein a cross member and a brace member are connected to the upright member by means of a wedge securing both said members to a socket on the upright member. A cross member is connected to the upright member by means of a channel shaped connector straddling a socket and affording a space therebetween for the reception of a grooved spigot extending from a brace member which spigot is retainable by the wedge passing through the cross member connector and a socket.

Abstract: A boat trailer having at least one pivotally mounted crossbar member facilitating loading and unloading a trailer and assuring efficient support of a boat loaded thereon. The crossbar member of the invention is provided with a dropped or curved configuration which supports the hull of a boat at a lowermost position for stability and for effective loading and unloading. The pivotal mounting and curved form of the crossbar member not only maintains the keel or hull as low as possible but naturally permits the hull contacting elements to tilt inwardly without the need for any particular tilting capability. The crossbar member is supported on the trailer booms by an improved bracket having the capability of effectively supporting the crossbar member for pivotal movement.

Abstract: An anchoring device in the form of a connection (10) has an axial bore (12) formed by two semi-circular elements (14,16) having four sills (26) which form right angle projections. Bores (30) are formed in the sills (26) for receiving bolts (36) having transverse pins (34) in a pivotal relationship. The sills (26) have inclined surfaces (38) which in use form a seat for the nut of the bolt (36) and to orientate the bolt at an angle in the passage (30).

Abstract: A device for connecting a tubular horizontal member to a tubular upright in a scaffold for building, in which the horizontal member engages, by means of a fork, a tenon provided laterally on the upright, while a mutually parallel bolt and wedge extended through the fork and tenon to lock the fork on the tenon.

Abstract: Tubular members to be interconnected in a rigid configuration each include a radially extending stud affixed to the tube outer surface (e.g., welded) and terminating in an enlarged head. First and second connector parts each have a relatively flat side which abut against one another in assembly to form an elongated connector, the cross-section of which is circular and of a diameter substantially identical to that of the tubular members. The flat surface of each of the connector parts includes cavities for receipt onto the studs. Each connector part cavity encompasses approximately one-half of the studs such that when the connector halves are fitted onto a pair of studs, they will completely enclose the two studs with the end surfaces of the connector parts contacting the tubular members sidewalls immediately adjacent the studs. The connector parts ends are formed into curved areas such that when they are assembled onto the studs they will smoothly and continuously contact the tubular member surfaces.

Abstract: The disclosure relates to scaffolding and includes the use of apertured locking discs adapted to cooperate with vertical supports, and horizontal or diagonal brace members. The ends of the brace members are provided with pivotable locking wedges which can be driven down through said ends and through the apertures in the locking discs. The apertures are all identically shaped and depending upon the intended purpose of the scaffold, certain surfaces of the ends of the brace members and the cooperating apertures are contacted by the locking wedges which thereby determines in which direction the horizontal members will extend.

Abstract: A scaffold joint for connecting the ends of horizontal scaffold members to vertical scaffold members. Spaced pairs of ring support members are fastened to the vertical scaffold members by welding or other suitable means. End connector assemblies are fastened to the ends of the horizontal scaffold members. Each of said end connector assemblies includes an end connector member and a locking assembly slidably mounted thereon. Each locking assembly is comprised of a wedge member and a wedge retainer member. The wedge retainer member is free floating relative to the wedge member and cooperates with a bolt to prevent inadvertent dislodgement of the assembly. Each end connector member has a pair of ring engaging portions adapted for engagement with the spaced ring support members on said vertical scaffold members.

Abstract: A ledger system for scaffolding which comprises a tubular ledger member having an end plate at one or both ends and being provided at one or both ends with a first slot extending from the end plate parallel with the axis of the tubular ledger member and a second slot also extending from the end plate parallel with the axis of the tubular ledger member and located 180.degree. round the circumference of the tubular ledger member from the first slot, the second slot having an enlarged inner end; and a wedge member for each pair of slots being arranged to pass through the first and second slots but being prevented from being removed from the first slot by first and second retaining means located adjacent the broader and narrower ends respectively of the wedge, the width of the enlarged inner end of the second slot being such as to permit the narrower end of the wedge with the second retaining means to pass freely therethrough.

Abstract: Means for assembling tubular scaffolding elements comprising an annulus (31) having radial arms (33) and being fixed on a vertical tubular element (32), a bracket or cap (34) engaged on a radial arm and locked by means of a key (35). Annulus (31) is shaped like a star and each radial arm (33) comprises a V-shaped radial clearance (36) and bosses (37,38,39), the sides of which are designed as steps to support the front end of the bracket or cap and are joined to the corresponding radial tubular element (42). The support steps are provided on the upper and lower sides (43,44) of each arm and are of a width and thickness to provide substantial seating to the end of the bracket and directional stability to the radial tubular element both in a vertical and a horizontal plane during the assembly keying operation.

Abstract: A two part connector with one of said parts providing an elongated cylindrical bore and the other a pin with a flared end, and with an expansible compression ring on the pin urged by a compression spring outwardly of said flared end to grip said bore.

Abstract: The invention relates to tubular-type scaffoldings, to a method for assembling them and to the horizontal transoms incorporated therein. A scaffolding according to the invention comprises vertical elements bearing sockets on each of which may be fixed one end of a horizontal transom bearing a fork and a conical pin prisoner therein. Near its end, the pin comprises a protruding pivot. At rest, the pin occupies a substantially horizontal position and the upper edge of the socket abuts slightly to the rear of the pivot and causes the pin to pivot to vertical position. One application of the invention is the erection of scaffoldings for the construction of buildings, ships or reservoirs.

Abstract: In post and runner type scaffolding, a uniquely formed integral connector is created from the end of the runner or other similar cross-member. The integral connector secures to a scaffolding post bracket (preferably in the form of a ring flange concentrically affixed to said post and having a circular array of identical cutouts) and abuts forcefully against the convex surface of said post by means of a wedge acting through one of said cutouts. The connector has a longitudinally extending cross-slot in its end of a width and depth to accommodate the bracket therein, dividing the connector end into upper and lower limbs. The free end of each limb terminates with the tubular walls thereof reformed from the tubular shape of said cross-member to a shape (preferably more flattened) effective to strengthen and stiffen said limbs for their intended use of supporting scaffolding loads and connection stresses.

Abstract: A fastener clip and joint structure incorporating same especially adapted for use with thin or narrow furniture parts, panels, or the like to reduce splitting or fracture of the parts when joined and/or stressed. The clip is formed from a one-piece metal plate, preferably of annealed spring steel for flexibility, having a raised, central, slotted portion and a pair of end flanges for securing the clip to one joint member. One end flange extends outwardly away from the central portion while the other extends under the central portion. A stud on an opposite joint member is slid along an inclined slot in the central portion to draw the joint members together. In one embodiment, an enlarged opening in the slot allows access through the slot to the end flange beneath the slot for fastening the flange to the joint member.

Abstract: In a construction of a car structure wherein a plurality of strength members each formed with an outdoor-side flange and an indoor-side flange are connected together and an outer plate member is connected to the outdoor-side flanges of the strength members, a joint member is provided which joint member includes outdoor-side and indoor-side flanges of the strength members and a web continuously connecting the flanges together three-dimensionally. The use of the joint member for connecting the strength members together facilitates production of the car structure and increases strength thereof.

Abstract: A scaffold joint for connectng the ends of horizontal scaffold members to vertical scaffold members. Spaced pairs of ring support members are fastened to the vertical scaffold members by welding or other suitable means. End connector assemblies are fastened to the ends of the horizontal scaffold members. Each of said end connector assemblies includes an end connector member and a locking member slidably mounted thereon. Each end connector member has a pair of ring engaging portions adapted for engagement with the spaced ring support members on said vertical scaffold members. The locking members are adapted when moved to their locked position to make tight wedging contact with a ring support member, thereby causing the ring engagement portions on the end connector members to be forced into tight engagement with the ring support members to thereby lock the horizontal scaffold members to the vertical scaffold members.

Abstract: A device for coupling together laterally directed scaffold elements (11) and uprights in a scaffold (12) or the like. Each coupling device (1) includes an engagement member (2) which is connected to the upright and is open upwards at least in the position of use. Said member is provided with a wall (6) which extends with spacing from the upright and which delimits a space (4) situated between the upright and the wall. A hook-shaped member (9) is situated at least at one end of said scaffold element (11) and is adapted to hook into the engagement member. A first clamping member (14) is movable in relation to the scaffold member and is adapted to bear against the upright and the engagement member. A second clamping member (22/31) is adapted, in a locking position to be forcibly gripped between the first clamping member and the scaffold element.

Abstract: One of two elongate tubular frame members to be removably connected is telescoped over, and frictionally and also latchably removably secured to the intervening connector structure. The connector structure comprises a conventional rigid body component of inverted U-shaped configuration including apertured horizontal wall and two vertical flanking-walls, for respective broad frictional engagements with the apertured top-panel and the two vertical panels of the surrounding tubular frame member. Departing from the prior art, the connector structure herein comprises a J-shaped spring means, the longerleg extending along the inner surface of the connector apertured horizontal wall and being provided with an upwardly extending locking projection surrounded by said wall aperture, and the shorterleg extending below the bottom-plane of the body flanking-walls.

Abstract: One of two frame elements to be removably connected is telescoped over and removably latchably secured to the intervening connector structure. The removable latching means takes the form of a cantilever mounted spring component located internally of the connector structure hollow body component, the spring resilient forward portion including a locking projection upwardly urged through an apertured wall of the body component and into a registering-aperture of the telescoped frame element. The cantilever spring is of novel structural and internally mounted relationship with the hollow body component to prevent longitudinal slidable movement of the spring and to ensure that it will reliably, though yieldably, upwardly urge the locking projection through the apertured wall and into the registering-aperture of the frame element to be removably latchably secured.

Abstract: The invention relates to scaffolding in which the uprights have sockets projecting outwardly at spaced positions along their length, the horizontal cross members of the scaffolding having spigots to engage in the sockets, a captive wedge being provided to cause the spigots to be clamped against the socket or upright. Such scaffolding in accordance with the invention is arranged so that in use the spigot is inserted into a socket and the wedge acts between the outside surface of the socket on the surface of the cross member tightly to draw the spigot against the corresponding inside surface of the socket. The "lower" narrower end of the wedge is formed or provided with a projection which, when the wedge is moved upwardly relative to the cross member it wedges against the surface of the cross member to hold the wedge in the withdrawn "uppermost" position so that the spigot can readily be removed from the socket.

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 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: A structural assembly includes an elongated support member having an end and a wall extending from the end. The wall has therein, at a location spaced from the end, a transverse opening. An elongated beam is positioned to be connected to the support member at the end thereof, the beam having first and second surface portions. An angle-shaped joining member has first and second outwardly extending wings. The first wing has at least one transverse projection, which extends through the transverse opening in the wall of the support member. The second wing has first and second surfaces. The second wing extends along the beam with the first surface of the second wing confronting the first surface portion of the beam.

Abstract: A steel tube scaffold composed of tube posts and latches and on the tube posts of which brackets spaced from one another and encompassing same flange-like are secured to which the latches are connectible by means of jaws secured endwise at the latches and with which the latches are interlockable by wedges. The circumference of each bracket has a tapered surface extending throughout the perimeter of the circumference. The jaw is firmly inserted into the latch by means of a shank having an aperture therein. In the aperture of the shank of the jaw there is provided an inclined surface for the wedge which in the driven-in condition is supported with one of its sides on the tapered surface of the circumference of the bracket and with the other of its sides on the inclined surface.

Abstract: Tubular frame structures such as for furniture, cabinets, display stands or the like comprise square tubular metal elements held together by a series of right angle connector structures. The improved connector comprises a channel having one end fixedly attached to a first frame element. A second frame element telescopes over the channel. A jack screw, accessible through a hole in the second frame element, engages a bowed toggle spring to force the sides of the channel apart. Engagement is established at two corners at the ends of one side of the frame while the reaction is sustained by the base of the channel.

Abstract: A first member is provided with an elongated recess which has one open end, and a first throughgoing passage which extends transversely to the elongation of the recess. A second member which is to be connected to the first member is provided with a disc which extends outwardly away from the second member. The disc is adapted to be received in the recess when the second and first members are connected to one another. The disc is provided with a throughgoing passage so arranged as to communicate and bound with the first passage of the first member a throughgoing channel. A wedge-shaped element is closely receivable in the channel so as to arrest the second member on the first member and prevent any movement of these two members relative to one another.

Abstract: A fence is assembled from tubular posts and open-ended tubular cross-pieces the ends of which are slidably supported on the posts and selectively secured in one of several discrete positions, for example by engaging transverse slots in the lower face of the cross-pieces on tabs in apertures in the posts. In another arrangement, flaps in the posts are folded in to form apertures slidably receiving ends of the cross-pieces, which are secured by selectively engaging pins in aligned holes in the flaps and cross-pieces. The fence may include a rectangular gate frame formed by folding a suitably cut-out tubular piece.

Abstract: A luggage rack bed includes a slat having a downwardly depending tab formed at end thereof. The tab seats in a groove formed in a fixed strap to define a preferred mode of interengaging the slat and strap. A strap cover has a notch formed therein which registers with the tab to lock the tab in the groove. The cover is snap fitted to the strap. With the ends of the strap fixed to luggage rack support stanchions to maintain the flexure of the strap the momentary forces, caused by a load being applied to the bed, are distributed throughout the bed.

Abstract: In builders scaffolding of the kind wherein cross-members are detachably connected to upright members by connecting means comprising a plurality of open-ended vertically disposed sockets on the upright member and connector means on the cross-members each comprising a pair of vertically spaced limbs adapted to embrace a selected socket member, with a wedge clamping member driven through aligned openings in the limbs of the connector member and through the socket to press the end faces of the limbs into engagement with the upright member, an improved connector member in which the two limbs are spaced apart by a distance sufficient to receive a socket therebetween with only a small clearance, at least the upper limb affording a cavity at its underside to accommodate a retaining formation which is provided on the lowermost end of the wedge clamping member so that the latter may be raised to a releasing position in which its lowermost end is clear of the space between the two limbs.

Abstract: In scaffolding a cross member is connected to an upright member by means of a dependent spigot which engages in a socket on the upright, and is secured to the upright by jamming the spigot in the socket by means of a retaining member carried by the cross member which is movable relative to the spigot by rotation of an associated cam.