Tensioning device (4) with telescopic safety block (5) for the tension of a catenary, in particular, for electric cables (8) of railway lines, undergrounds and trolleybuses comprising at least one crosspiece (12) extending along a main direction (X-X), at ...

Tensioning device (4) for the tension of a catenary, in particular for electric cables (8) of railway lines, undergrounds and trolleybuses comprising at least one crosspiece (12) extending in a main direction (X-X), at least one fixed pulley (20) and at le...

The present invention relates to a full traction coupling sleeve for railways contact wires, which is partially wrapped around the adjoining ends of said wires to allow the passage of the train sliding block on the free part of the ends, and which is axial...