Amazing process of making and boring a taper gear pulley on a lathe machine combines precision and skill. Starting with raw ...

Let’s take a look at some of the simple mechanisms that they use. Pulleys and gears.When a flag is raised, it will often be lifted using a pulley mechanism. A pulley is a wheel on a fixed axle.

After a couple of millennia of fiddling with gears, you’d think there wouldn ... infinitely variable transmission built from nested pulleys, and you realize there’s always room for improvement.