San Francisco’s iconic cable cars are hoisted uphill by 35-year-old wheels called “sheaves,” which pull massive steel cables at 9.5… SF to rebuild underground cable car pulley system | San ...

A pulley wheel from Edinburgh’s original cable-hauled tram network has been discovered during work to extend the current line to Newhaven. Did you know with a Digital Subscription to The ...

A pulley close pulley A pulley is a simple machine made up of a grooved wheel on an axle. It guides a rope, belt, or cable and changes the direction of or the amount of force that is needed to ...