Over many centuries, block-and-tackle systems, or rope and pulley systems as they are more commonly known, have been used to help construct a variety of famous buildings, including the Colosseum in ...

Cable sheaves made from wear-resistant, monocast nylon protect umbilicals for launch and recovery applications and cable tethers for deploying submersibles or offshore exploration and production. The ...

San Francisco’s iconic cable cars are hoisted uphill by 35-year-old wheels called “sheaves,” which pull massive steel cables at 9.5 miles per hour. Now, those 25 underground sheaves will be rebuilt ...

Event Summary On Wednesday, June 3, crews will begin the first phase of restoring the Cable Car sheave at the Powell and Market streets turnaround. The sheave is a massive, grooved wheel that guide ...