Abstract: A rope-twisting machine for making ropes includes arranged on a base in succession a rotor carrying rope elements, a mandrel rigidly connected to the rotor and having shaping grooves, pressure rollers mounted in a casing, the axes of the pressure rollers being arranged in planes passing through the axis of rotation of the rotor. The casing is disposed concentrically relative to the mandrel, the casing and the rotor being capable of relative rotation.

Abstract: The disclosed method of making a shape-stranded rope includes twisting large wires into strands by twining them in at least one layer about a core with a sheathing of a soft deformable material, plastic drawing of the strands, forming the strands into a shaped profile and twisting the strands into the rope. The plastic drawing is effected until every round wire of the strand acquires a wedge-like profile, with the wires adjoining the sheathing becoming partly embedded in this sheathing, and the strand acquires a substantially smooth peripheral surface. The method enables, while using round wires, to increase the structural density of the strands, and also to enhance the flexibility, strength and wear resistance of the shape-stranded rope, the rope manufactured by the disclosed method being usable by various industries.

Abstract: The flattened strand rope of the invention comprises wedge-shaped strands, each made up of wires wound on a core. At least a portion of the strand wires are fashioned as twisted wire groups in which the wires are sector-shaped and in contact with each other over helical surfaces. With such a structural embodiment of the flattened strand wire, use can be made of thin and, consequently, stronger and more flexible wires, thereby increasing the strength and flexibility of the rope and making for the use of the rope in the various branches of industry, including lifting mechanisms with large or small drum diameters.