DE233674C - - Google Patents

Description

The invention is a method for the production of metal frameworks, particularly to serve as an insert in full or tubular concrete bodies.

The novelty of this process consists in the fact that a common coating that is ready in itself placed over a helically bent wire serving as the inner core, tubular is locked together and connected to the helical wire.

Compared to a known method, according to which a common coating on individual, is spanned at intervals held parallel to each other frame, the subject matter of the invention offers the advantage that the Helical winding can be produced more easily and also cheaper.

It is also known that reinforcement inserts made of metal frames for concrete bodies in such a way that you have a helically wound Wire firmly connects to an iron grating or the like, but differs from all of them these facilities the subject matter of the invention in that only the hang-up of one to manufacture and only to be joined together to form a pipe joint cover on the helical wire serving as the inner core is necessary. For economical and mechanical mass production this simple production of the entire inlay frame offers significant advantages, because in the known method mentioned, a time-consuming interweaving of the longitudinal and cross bracing of the iron insert required.

According to the invention, the metal frame is now created in the following way: First are single strong rods made of iron or steel, the number of which depends on the respective scope of the skeleton to be manufactured, placed side by side on a workbench and there by brands, e.g. B. by actuating. pins, both at their distance from each other as well as in their position to each other.

Because if it is, for example, the production of the framework for a "cylindrical" Concrete body, so the individual longitudinal bars, with the same distance from each other, should be laid parallel to each other, while otherwise they are in the case of the skeleton for one "Conical" bodies, also at the same distance from one another, diverge accordingly would have to.

These individual longitudinal bars are now parallel by multiple, at short intervals to each other, paired and then twisted iron wires immovable with each other connected, so that a latticework with square mesh is created.

Now you wind on a mold serving as a core, the cross-section of which is known Way is adjustable, a weaker iron wire in the form of a screw and fastened both ends of which on the core.

The above-mentioned grid is now stretched in the form of a tube over this wire screw and linked with binding wire that the strong longitudinal bars of the lattice in the longitudinal direction the wire screw and enclose it tightly and evenly all around.

Claims (1)

Then you can go across the grid in the opposite direction Direction a second wire screw can be wound and fastened. The mold core is then released in a known manner by reducing its cross section from the workpiece, which is now carefully at the crossing points of the longitudinal and transverse wires is tied with binding wire, so that finally there is a firmly attached framework, ίο which, embedded in concrete mass, results in a building piece of great strength. Instead of the grid described above, it can be used as a common coating over the wire screw Of course, any wire mesh, solid or perforated sheet metal, expanded metal or the like. Find use. Pate ν τ-An s PRU CH: Process for the production of metal frameworks, especially as an insert for concrete bodies, characterized in that a ready-made and only to be joined together to form a tube coating, for. B. in lattice or other form, on a helical serving as an inner core bent wire is applied.