Abstract: A device for fastening an object against a wall as a plug-in mounting is described, which is provided with an externally threaded bolt, onto one end of which a nut can be threaded and on the other end of which, which is at least partially conical and the maximum diameter of which is equal at most to the diameter of the bolt, an expander element composed of two half-shell-like parts is displaceably held. The two half-shell-like expander parts are provided, on their two longitudianl edges which in the mounted state are located opposite one another, with at least two lobes each, which for mutually securing one another axially engage one another adjacently and are held on the conical end by positive adjacent engagement in the radial direction and are disposed on the expander element in such a manner that the expander element parts are transversely symmetrical or in the developed state are point-symmetrical.
Abstract: A pipe system for marking bank notes or other articles of value in a closed space with a dye at attempts at burglary comprises pipes shaped as oblong profiled housings (3). Each housing (3) contains a pressure rail (5) which will be pressed up against a dye bag (4) when an explosive charge (9) is ignited. Thereby the bag (4) will burst, and the dye will be sprayed upon the bank notes through a slot (2) in the bottom (1) of a tray carrying the notes. The spraying will occur practically at the same time along the entire slot (2), and any risk that spraying should be insufficient at some places because of pressure drop in the pipe lines is eliminated. The pressure rail (5) and the profiled housing (3) can be extruded at relatively small costs.
Abstract: An expansion dowel assembly includes an axially elongated expansion sleeve with an axially extending expansion region, a spreader positioned within the sleeves in the expansion region, and a bolt in threaded engagement within a tapped bore in the spreader so that the spreader can be displaced axially through the expansion region for widening it in the radial direction. The surface of the spreader in surface contact with the interior of the sleeve is spherically shaped. In the assembled state, before expansion, the spreader is held in the expansion sleeve against axial displacement. Accordingly, the parts of the assembly can be preassembled as a unit.
Abstract: A thief-trapping apparatus for a room having a closure permitting room ingress and egress and an object therein to be safeguarded utilizes a locking mechanism for the room closure and a cord having a frangible link. The locking mechanism includes a bolt and a bolt receptacle which are operatively mountable on the closure and the wall of the room adjacent the closure. When operatively mounted on the room wall and closure, the bolt is movable between a first position at which the bolt cooperates with the bolt receptacle to lock the closure in a closed condition and a second position at which the closure is unlocked. The locking mechanism further includes a spring for biasing the bolt from its second position to its first position, and the cord is fastened at one end to the bolt so that when the cord is pulled from its other end, the bolt moves to its second position.
Abstract: A shell for use in expansion assembly which comprises a member of generally tubular shape, the member having a first end which is inclined to its longitudinal axis and being formed with at least a first line of weakness in its wall which extends in the axial direction of the member.
Abstract: An expandable security structure for housing an automatic teller machine. The structure comprises a pair of telescopic sections that nest together to provide a minimum dimensioned width structure for housing the automatic teller machine and telescoped to a maximum dimension to provide a structure sufficiently large to enable the automatic teller machine to be serviced by personnel from within the structure. The entry door into the structure permits passage to the interior thereof only when the structure is in at least a partially telescoped from its nested position. Either a motor or manual crank is provided for relative movement of the sections. In a second embodiment the automatic teller machine is translatable relative to the translatable section from a first position where its front surface is substantially flush with the exterior wall of the structure to a second extended position where the front surface is positioned exteriorly remote therefrom.
Abstract: A two-part fastener made of resilient material is disclosed as comprising two identical mating fastening devices. Each fastening device is constructed with a circular disc head integrally formed with a shank. The shank has an elongate symmetrically-shaped body having a longitudinal central axis and is formed with a pair of leg members disposed along the central axis in diametrically opposed spaced apart relation. Each leg member is formed by two wall elements molded together in a V-shaped configuration wth the outer end portion laterally spaced apart from the adjoining leg member a distance sufficient to embracingly receive the pair of leg members of the identical fastening device. When the identical fastening devices are brought together in a nesting relationship, they are locked together by virtue of the interlocking cooperating relationship of a plurality of tooth formations formed on one of the two V-shaped wall elements of each leg member.
Abstract: There is disclosed a mechanism for retaining an automotive radiator rigid, including sleeve members mounted on oppositely disposed portions of the radiator and an interconnecting rod member. Arcuate-shaped edge portions are formed on oppositely disposed portions of the radiator, each of the sleeve members having longitudinal bores formed therethrough and including arcuate-shaped groove bottoms opening in a direction generally parallel to the longitudinal axis of the sleeve members matching the arcuate-shaped edge portions and being slidably mounted thereon so as to have the bores thereof aligned. A rod is mounted across the radiator and extended through the aligned bores and secured therein by nuts mounted on the threaded ends against the respective sleeves, to thereby rigidify the radiator for use on trucks and off-highway vehicles.
Abstract: An expansion dowel assembly includes an axially elongated sleeve having a leading end and a trailing end, an axially extending spreading member located within the sleeve adjacent its leading end, and a threaded bolt extending into the trailing end and toward the leading end of the sleeve. The threaded bolt is axially movable within the sleeve between a first position where the dowel assembly can be inserted into the borehole and a second position where the bolt is driven further into the sleeve into expanding contact with the spreading member for radially expanding the spreading member and the sleeve. An abutment is provided for the leading end of the dowel assembly to prevent displacement of the spreading member out of the sleeve when the bolt is driven from the first position toward the second position.
Abstract: A fastener system is disclosed comprising a nut having an axial bore provided with interior thread and a bolt having exterior thread for engagement with the interior bore of the nut. The nut has an end portion having an elliptical cross section for engaging a complementarily shaped driver. As the nut is tightened onto the bolt against a workpiece, resistance to further threading increases. When sufficient resistance to threading occurs, the driver will deform the elliptically shaped end portions of the nut, forcing material of the nut radially inward toward the axis of the nut. The portion of the bolt which engages the nut has a plurality of recesses for receiving the deformed material of the nut as it flows radially inward, thereby locking the nut, bolt, and workpiece together. The recesses of the bolt have a shoulder for abutting the deformed material to prevent unthreading of the nut from the bolt.
Abstract: An apparatus, method and article of manufacture for angularly connecting two plates. A first plate is notched. The second plate has an opening. A holding member is adapted to fit into the notch in the first plate. The holding member has a guiding channel for a fastener. The fastener is passed through the opening in the second plate and into the guided channel of the holding member and is guided into direct mechanical connection with both sides of the second slot of the first plate.
Abstract: An impact fastener especially adapted for holding batts of insulation to sheet metal is disclosed. A characterizing feature of the fastener resides in the provision of three stabilizing legs which are configured to engage the surface of the receiving metal after partial penetration and to deform in accordance with the depth of penetration, providing in all instances a stabilizing effect.
Abstract: The invention relates to a bolt comprising a screw the threaded portion of which is provided with a guiding end, and a nut whose upper portion contains a self-locking washer with which is separably associated a ring internally concentric with the washer and ensuring the centering of the screw during its introduction into the nut.
Abstract: A bulletproof door and door jamb construction includes a door jamb which includes a vertically and horizontally extending opening therein in an area where bullet shrapnel fragments can pass freely therethrough into the hollow interior of the door jamb so that the spent fragments lose their energy and do not enter the protected area behind the door by otherwise passing through the crack or space between the door and door jamb.
Abstract: A drill screw having an integral driving shank, head, and entering end portion. The shank has formed on it thread convolutions of uniform outer and root diameters. The entering end portion has a cylindrical portion coaxial with the shank provided with two flutes inclined with respect to the center axis of the cylindrical portion and disposed on opposite sides of it, and end surfaces of roof-shape. Each of the flutes includes conical flute surfaces. The intersection of each of the conical flute surfaces and each of the end surfaces forms a cutting edge. And each of the conical flute surfaces forms a rake angle with respect to one of the cutting edges, while each of the end surfaces forms a relief angle with respect to one of the cutting edges.In a preferred construction each fluted surface is located outside or beyond a plane containing the center axis of the drill screw, and the fluted surfaces each have a vertex angle of 35.degree. to 54.degree..
Abstract: A panel hanger assembly for attaching soft panels of insulation material to a structural surface, such as the metal wall of a furnace, the hanger assembly including an elongated stud member having one end for welding to the furnace wall and being pointed at the other end, the stud member being of generally rectangular cross-sectional configuration and having spaced apart pairs of opposed notches formed in the cross-sectional end walls, and a clip having an aperture therein, the first portion of the aperture being dimensioned to freely slidably receive the stud member thereon and the other portion of the aperture being longitudinal and adapted for slidably receiving the stud member at a notched area, the outer surface of the clip being configured to resist reverse lateral displacement of the clip relative to the stud so that when the clip is positioned on the stud to retain insulation previously impaled thereon, the clip is not inadvertantly disengageable from the stud.
Abstract: A secure container, for example a portable cassette for banknotes, has a shutter at one end movable by a sliding shutter bar (2). The shutter is lockable by the action of a shutter locking bar (8) pivoted at its center between a locking position (as shown in FIG. 1) and a primed position at which the shutter locking bar is parallel to the container walls and its end is aligned with an aperture 2a in the shutter bar (2) allowing the shutter bar to slide within the container and open the shutter.The shutter locking bar (8) is moved to its primed position by a lock (5) with a rotatable lock pin (6) engaging an operating arm (7) coupled to the shutter locking bar (8). An interlock pawl (11) pivotally mounted on a flange of the arm (7) has a catch engaging the lock pin (6), so as to prevent improper priming of the shutter locking bar (8) until the operation of the lock (5).
Abstract: In a blind fastener comprising a nut with an axial bore therethrough and a bolt having a stem extending through said nut, the improvement comprising said bolt stem having an altered thread section adjacent to the bolt head which upon the setting of said fastener is adapted to interfere with the threading of said nut onto said bolt so that the torsional resistance thereto is substantially increased compared to the axial resistance during the completion of said fastener setting.
Abstract: Disclosed are two embodiments (40, 50) of a self-locking prevailing torque fastener featuring a common base portion (2) having an aperture (4) therethrough for receiving a threaded member that is at least partially surrounded by means such as a warped helical edge (6) for engaging the threads of the threaded member. Fasteners (40, 50) are provided with a pair of spaced-apart resilient torque arms having respective sections (8) that respectively extend downwardly from opposite edge of base portion (2) to sections (10) that extend upwardly to sections (12) that extend through respective openings (14) in each to respective free-ends (16) that are adapted to press against opposite sides of the threaded member.
Abstract: This invention provides a captive fastener in which a nut is held to a workpiece by a retainer ring held in a two-piece grommet attached to the workpiece, the retainer ring being flat and split, with its grain perpendicular to a diameter bisecting the split, and its inner and outer edges having alternate elongated recesses to increase the effective ring width without increasing spring force. The stud assembly includes a cage secured to the other workpiece, with side flanges removably and floatingly retaining a housing in which is a stud and spring biased ratchet washer. The notched outer end of the housing is bent over the head of the stud to secure the stud. The ratchet washer has tabs fitting in the housing wall, and ratchet teeth to engage teeth on the end of the nut. A cover fits over the housing.