A rope climbing elevator (10) includes prime movers (40,42) and drive sheaves (32,34) secured to the car (10) and engaging stationary ropes (12-26).

The device for climbing a pair of ropes (1) includes releasable upper and lower clasps (4,6) for each rope that clamp in response to a downward force acting thereon but relieve when the downward force is relieved and connecting elements for holding a climber, including a seat (7, 12) or harness (23), Each releasable clasp (4,6) has a housing (21); a yoke (3) in the housing (21) provided with an interior space having beveled inclines widening downward; cotters (10) positioned on opposite sides of...

A window blind includes a housing, slats, and a bottom rail. A shaft is journalled in the housing. A pair of pull ropes extends through the housing and the slats, and connects the shaft to the bottom rail. A drive cord is coupled to the shaft. An operating device includes a pulling unit, a braking unit, and a positioning unit. The pulling unit permits extension of the drive cord therethrough, has the drive cord secured thereto, and is operable so as to rotate the shaft for raising the bottom rai...

A method of manufacturing wire ropes, in which a translational motion is imparted to wires (2) fed from reels and before the twisting of these wires around the core member (11) they are given a residual deformation by way of subjecting each wire (2) to a flat bending on one support (3) and to a helical bending in the direction revolved relative to the direction of the flat bending. A wire rope twisting machine in which a device for imparting a residual deformation to the wires (2) is secured on ...

A device for weighing elongated members such as marine lines and ropes includes a hub, a motive wheel which is supported on the hub and is driven by a motor, and a driven wheel which is coupled to and driven by the motive wheel. The motive wheel and the driven wheel respectively form opposite sides of a groove for receiving the elongated member which is being weighed. A thrust ring is fixed to the driven wheel, and the motive wheel lies axially between the thrust ring and the driven wheel. The a...

A method for the direct measurement of large strains in ropes in situ using a plastic optical fiber, for example, perfluorocarbon or polymethyl methacrylate and Optical Time-Domain Reflectometer or other light time-of-flight measurement instrumentation. Protective sheaths and guides are incorporated to protect the plastic optical fiber. In one embodiment, a small rope is braided around the plastic optical fiber to impose lateral compressive forces to restrain the plastic optical fiber from slipp...

A termination and method of terminating braided ropes or cables of aramid fiber includes fabricating short tapered reinforcement ropes of the same material which are inserted at each end of each rope to increase its thickness, forming a collar having a tapered interior channel and a tube to fit inside the channel having a tapered outside surface. The reinforced rope ends (four, in this example) are tied off near their ends, separated into individual fibers, and any coating thereon washed out. Th...

A reeling device for load and safety ropes or cables on suspended outdoor elevator type cages, having a single reeling drum onto which the load and safety ropes or cables are wound in different layers of different diameter, one on top of the other one; the difference in reeling length is compensated by a temporary storage facility so that similar lengths displacement of load and safety cables or ropes are obtained at the cage.

A load is lowered onto a platform under the guidance of a pivotal structure which carries a switch contact adapted for engaging the side of the platform. The switch controls the operation of a piston-cylinder arrangement such that when the switch contact is not engaged with the platform, the guide structure will be pivoted until the switch comes into contact with the platform, whereupon the piston-cylinder arrangement serves as a buffer resisting pivotal movement of the guide structure away from...

A device for preventing a rope suspended body from swinging which includes two ropes secured at a distance from each other to the body the swinging of which is to be prevented. A tensioning device is provided for each rope and the wire ropes are arranged at an angle to the vertical and to each other. The tensioning devices keep the respective ropes under tension with a force which is the same for each rope. These devices are connected with each other such that when the tensions in the rope becom...