Abstract A reinforcement for concrete ceilings, concrete walls and the like is produced by providing first a reinforcing mat from longitudinal reinforcing bars and groupwise disposed transverse reinforcing bars. In one or more spaced rows of meshes of the mat which extend parallel to the longitudinal reinforcing bars, the transverse bars of each group in such mesh rows are bent apart in directions obliquely to the plane of the mat and simultaneously flexed V-wise in such a way that the bent and flexed transverse bars meet each other again groupwise at their flex apexes, so as to form a row of protruding pyramids instead of each of these mesh rows. Thereupon, the summits of the pyramids are interconnected by means of a straight individual bar to form a protruding lattice girder. The apparatus for producing such reinforcement comprises pairwise supporting means to receive and support the reinforcing mat, pairwise securing means cooperating with the supporting means for holding the mat, bending means for simulatenously bending apart and V-wise flexing the transverse bars of a row of meshes, transport means for handling a straight individual bar, and welding means for welding the individual bar to the row of pyramids formed by bending and flexing the transverse bars of a row of meshes.
A process of producing reinforcement for concrete ceilings, concrete walls and the like, which comprises the following steps: a. providing a reinforcing mat comprising adjacent pairs of parallel longitudinal reinforcing bars and groupwise disposed transverse reinforcing bars, said longitudinal and transverse bars being disposed in a single plane to define meshes of said mat with some of said pairs of said longitudinal bars being disposed at a Selected normal spacing and other of said pairs of longitudinal bars being spaced further apart than said normal spacing; b. bending the section of those transverse bars extending between said other pairs of longitudinal bars apart in directions obliquely to the plane of said mat but towards the same side of that plane and simultaneously flexing said sections of the transverse bars V-wise in such a way that apices of the bent and flexed transverse bar sections are grouped in closely spaced relation with the spacing between the bars of said other pairs of longitudinal bars being reduced substantially to said normal spacing, so as to form a row of protruding pyramids instead of each of said other pairs of longitudinal bars; and c. interconnecting said pyramids at their summits by means of a straight individual bar to form a protruding lattice girder; the resulting product being a substantially flat reinforcing mat having protruding lattice girders.
Claim 2
Dependent Claim
223 words
A process of producing reinforcement for concrete ceilings, concrete walls and the like, which comprises the following steps: a. providing a reinforcing mat comprising adjacent pairs of parallel longitudinal reinforcing bars and groupwise disposed transverse reinforcing bars, said longitudinal and transverse bars being disposed in a single plane to define meshes of said mat with some of said pairs of said longitudinal bars being disposed at a Selected normal spacing and other of said pairs of longitudinal bars being spaced further apart than said normal spacing; b. bending the section of those transverse bars extending between said other pairs of longitudinal bars apart in directions obliquely to the plane of said mat but towards the same side of that plane and simultaneously flexing said sections of the transverse bars V-wise in such a way that apices of the bent and flexed transverse bar sections are grouped in closely spaced relation with the spacing between the bars of said other pairs of longitudinal bars being reduced substantially to said normal spacing, so as to form a row of protruding pyramids instead of each of said other pairs of longitudinal bars; and c. interconnecting said pyramids at their summits by means of a straight individual bar to form a protruding lattice girder; the resulting product being a substantially flat reinforcing mat having protruding lattice girders.
Claim 3
Dependent Claim
16 words
The process as claimed in claim 1, in which said individual bars have a round cross-section.
Claim 4
Dependent Claim
16 words
The process as claimed in claim 1, in which said individual bars have a profiled cross-section.
Claim 5
Dependent Claim
16 words
The process as claimed in claim 1, in which the various parts are joined by welding.