Abstract: A method and apparatus are provided for constructing a security screen that includes several parallel security threads woven into a fine screen mesh. Adjacent ends (42, 44) of adjacent security threads (21, 22) are joined together or to a splicing thread (40), to create a continuous strand (60) that extends in a sinuous path through the entire screen mesh, and the continuous strand is used to pull a security wire (64), such as an insulated copper wire through the screen mesh. By joining opposite ends of a long splicing wire to adjacent ends of two security threads, applicant is able to join the security threads into a continuous strand, without cutting away a lot of screen mesh. An end of a security thread is pressure-butt welded to an end of another security thread or to the splicing thread by holding the end of the security thread and pushing in and crinkling the fine screen mesh so the end of the security thread is accessible for welding.

Abstract: This invention relates to a sheet-shaped welded netting of metal at least comprising mesh-forming wires extending longitudinally of the sheet and/or mesh-forming wires extending transversely of the sheet as well as several deformed stretching wires extending longitudinally of the sheet which can stretch under tensile stress and which may or may not have the function of mesh-forming wires extending longitudinally of the sheet, the deformations in the stretching wires substantially lying in the plane of the netting and the stretching wires displaying a regular arrangement of identical patterns longitudinally of the sheet, whereby the deformation of the stretching wires is such that the ratio of the maximum dimension (B) of a mesh longitudinally of the sheet to the distance (A) between two consecutive maxima in a deformed stretching wire is at least about three, that the maxima of two adjacent stretching wires of the welded netting may or may not have the same position with respect to the longitudinal direction

Abstract: There is described a method and a device for the production of a wire jointed-band of alternately clockwise and counterclockwise, respectively, wound spirals of metal wire or artificial resin wire, wherein the spirals are guided to a narrow pass such that the windings providing the spirals open themselves in the area of the narrow pass and in this the parallel spirals partly are pushed into each other such that in each case one of the windings of one spiral is placed between adjacent windings of the adjacent spiral whereby the spirals thus fitted into each other are connected with each other by inserting a coupling wire into the space provided by the overlapping windings and whereby in each case several of the pairs of spirals fitted into each other are guided to the narrow space in which area the spirals are driven in the transporting direction. This is resulting in a high production speed and broad wire jointed-bands.

Abstract: A spiral wire and a method of manufacturing a spiral wire comprising adjacent spirals (1) positioned in pairs with their loops (1a) intermeshing to form rows of loops in the transverse direction of the wire, and link threads (2) inserted in the rows. The wire is subjected to thermal fixation by simultaneous stretching and heating thereof. In order to fix the loops axially immovably on the link threads, the link thread is formed by a core thread (3) provided with a coating (4) deformable at a lower temperature than the core thread. During the thermal fixation, the coating softens and is pressed from under the loops into the spaces between the loops and the coating is provided with grooves (5) for fixing of the loops without deformation of the core thread.

Abstract: A tomato cage is provided which can be quickly and easily assembled with no tools at all, or merely a pair of pliers. When disassembled it can be stored in a minimum space, and since there are very few different components, it can be manufactured in a simple manner. A plurality of vertical support posts are disposed at the corners of a polygon; e.g. four support posts are disposed at the corners of a square. Rods interconnect the support posts, apertures being formed in the support posts for receiving a first end of a rod. Only one type of rod need be utilized, having a generally straight first end and having a hook at a second end, each rod extending from an aperture in one post to a position wherein the hook engages another rod adjacent the second post, and so that each rod makes an angle in the range of about 5.degree.-10.degree. with respect to the horizontal.

Abstract: A method and apparatus is proposed for the simultaneous joining together of a multiplicity of individual helical coils in forming a link belt section intended for co-operation with other like sections to produce a link belt of a requisite length, coils of opposite hand being arranged side-by-side in pairs and such pairs being combined together to form the section. Hinge wires are threaded through the interdigitated turns of adjacent coils to maintain the integrity of the total structure.The apparatus includes a guide means for locating the individual coils one relative to another and a roller nip arrangement through which the coils, in a requisite relative disposition, are caused to pass. Hinge wire insertion means is also provided, whereby individual hinge wires are introduced into the interdigitated turns of adjacent coils.

Abstract: A method and apparatus for assembling a shackled conveyor belt from prepared helical elements having alternately a left handed thread and a right handed thread in a movable helical element connector which feeds individual helical elements towards the end helical element of the assembled portion of the conveyor by means of a feeding air flow.Two each individual helical elements during the feeding movement are pushed towards each other in their longitudinal direction at an angle by means of the feeding air flow, then the two helical elements are parallelly deflected in the area of their joining with alternating interlacing of their spires. The front end in the feeding direction of the joined pair of helical elements is engaged by means of a feeding air flow at an acute angle to the associated end section of the end positioned helical element of the assembled portion of the shackle conveyor belt.

Abstract: Helixes are assembled into face structures by providing an initial helix which is stretched and retained on a work table, and a first helix which is attached to the initial helix, inserting into the first helix of a prestretched second helix by means of a joining tool and from a discharge conduit so that the second helix exits from the discharge conduit at an acute angle with respect to the first helix and moved along the latter connecting the second helix with the first helix by inserting an insert wire into the overlapping areas between the head arches of the first and second helixes, and displacing the thus finished face structure by a predetermined distance between insert wires in a timed sequence before a subsequent such inserting step for a further helix to be inserted into the second helix.

Abstract: A barrier-type metal wire fabric which is substantially free of transverse passages while providing desired travel path flexibility is disclosed along with methods and means for its manufacture. Shaped wire with at least two diametrically opposed planar surfaces is helically wound with a planar surface confronting the working surface of the winding mandrel. Left-hand wound and right-hand wound spirals are assembled with individual loop portions of each being nested within the loops of its next adjacent oppositely-wound spiral. A connector rod inserted within longitudinally overlapping internal loop portions of such spirals provides for pivotal relative movement between adjacent spirals and desired travel path flexibility while the dimensional relationships and assembly taught substantially eliminate non-rotational relative movement between metal wire elements of the fabric.

Abstract: A metallic substrate and an outer thermoplastic resinous coating are bonded to one another by a resinous polyamide hot melt adhesive prepared by condensation of an unpolymerized amide-forming dicarboxylic-containing compound or polymeric fatty acid with a diamine of the formula ##STR1## wherein each of R.sup.4, R.sup.5, R.sup.6 and R.sup.7 is a hydrogen atom or an alkyl radical; X is a nitrogen atom or a carbon atom bearing a single hydrogen substituent and n is an integer of from 1 to 6 inclusive. The adhesive is first applied to the metal substrate with sequential deposition of the thermoplastic resinous outer coating.

Abstract: Method of reinforcing concrete pipe in a rotary molding method using a wire reinforcing cage having a helical strand disposed about its exterior to resist torsional forces on the cage during molding, the cage being formed from a flat sheet.

Abstract: A wire mesh structure, primarily for space applications, characterized by its lightweight, its compact stowage and deployment capability, and its ability to maintain its shape under widely varying thermal conditions. The structure has a frame supporting a wire mesh including wires which are terminally secured to the frame and constitute the primary structural elements of the mesh. These structural wires are preformed to a spring-like configuration which renders the wires resiliently compliant with a low spring rate in the endwise direction and are stretched to produce a predetermined tension preload in the wires when the mesh is installed on the supporting frame. This preload retains the mesh in a taut condition under widely varying thermal conditions and thereby prevents the formation of slack in the mesh which would allow out-of-plane displacement of the mesh.

Abstract: Chain-link fencing consisting of a mesh of interlinked wire coils is flattened so as to have an overall thickness perpendicular to the plane of the mesh equal to between two and five times the diameter of the wire constituting the coils. Thereupon the flattened mesh is either rolled up into tight rolls, or is laid meander-fashion in a container. The mesh may be flattened by means of a platen press operating synchronously and immediately downstream of a fence-weaving machine that produces the mesh step-wise, or by a pair of rollers.