A stranded rope (12) of large size is made by assembling a plurality of strands (10) and a core (11) side-by-side along a track (13); securing the leading ends in a clamp (14); securing the trailing ends in spaced anchorages (17, 18); applying tension to the strands (10) and core (11); guiding the strands (10) intermediate the clamp (14) and anchorages (17, 18) into the closed rope array round the core (11) by means of a closing die (20) on a trolley (19); moving the trolley (19) from the clamp ...

The invention relates to the construction of wire rope strands and ropes produced therefrom in which each strand is constructed in known manner from steel wires but includes at least one control element in the form of a metallic zinc or aluminium element which may be in the form of a wire or wires or a foil wrapping or coating to prevent or reduce oxidation of the steel wires, the control element being conductively in contact with the steel wires and being surrounded by steel wires to protect it...

An apparatus is disclosed by which ropes and similar elongated objects can be accumulated in storage cans. The object is advanced through an upright stationary upstream guide tube and through a rotating downstream guide tube and its discharging end distant from the axis of rotation. A braking drum coaxially surrounds the orbiting trajectory of the discharging end of the downstream guide tube so that the portions of the objects which are being discharged through the discharging end impinge agains...

A spool for materials which can be wound, such as ropes, cables and the like, includes a spool core and two spool flanges positioned on its axial ends, the flanges including a support structure having radial support members positioned between an inner ring and an outer ring, and an inside surface-like casing is supported on the support structure, the casing consisting of a plurality of individual segments, each segment being disposed between the radial support members, the segments being detacha...

The device is in the nature of a winch, particularly for use on sailing yachts as a sheet or anchor winch, and in which the rope or the like to be gripped is guided over a driven member comprising two conical discs operatively coupled to each other and having their conical surfaces facing each other and opening around the entire periphery of the driven member. A drive shaft is operable to rotate the discs, and at least one conical disc and preferably both conical discs, are mounted for rotation ...

A rope-descent device for lowering objects and in particular persons by means of a rope and comprising frame-mounted rollers around which a rope is run in an S-shaped path, the friction resulting from rope-to-roller and rope to rope contact being such that the rope tension transmitted through the device is greatly reduced so that, when the device is supported from one end of the rope an object such as a person supported from the device may be lowered by feeding the other end of the rope, which i...

A preforming head for making ropes and cable armor including an axle with a front preforming disk fixedly mounted thereon. A middle preforming disk and a rear preforming disk are displaceably mounted on the axle. The middle disk has a diameter larger than the front disk and smaller than the rear disk. A drive moves the disks so that the distance between front disk and middle disk remains approximately equal to the distance between middle disk and rear disk.

Strands and wire ropes composed of materials such as high carbon steels and stainless steels can be provided in a compacted, mechanically stress relieved and thermally stress relieved condition. The wires are compacted during stranding to form the individual strands of the wire ropes. The wires can be thermally stress relieved prior to stranding to remove tensile residual stresses. Compaction produces a compressive residual stress state in the strands which increases fatigue resistance. The stra...

To identify the need for replacement of stranded synthetic fiber ropes, preferably ropes of aramide fiber, a torsionally neutral rope construction of load-bearing fiber strands is obtained by having at least two layers of strands laid together in opposite directions so that the torsional forces in the layers of strands compensate each other. If the layers of the strands become weakened by unequal amounts due to wear or external influences, when the rope is under load and running operationally it...

This invention provides a method of making single-wall carbon nanotubes by laser vaporizing a mixture of carbon and one or more Group VIII transition metals. Single-wall carbon nanotubes preferentially form in the vapor and the one or more Group VIII transition metals catalyzed growth of the single-wall carbon nanotubes. In one embodiment of the invention, one or more single-wall carbon nanotubes are fixed in a high temperature zone so that the one or more Group VIII transition metals catalyze f...