The auto-winding mechanism was the only difference from the original clock. For the original model, the weights would have had to be wound once a week, he said.

A gear drive, a ratcheted winding sprocket, and a ball chain gave the clock about one hundred minutes of runtime. Adding a recharging mechanism was fairly straightforward.

When wound, the pendulum moves back and forth for about eight days. Ansonia made the clocks in the early 1900s using different figures, including “Huntress,” “Juno” and “Fisher.” ...

Currently, the clock is operated using a weight cable system with weights weighing 800 pounds and housed in a chute that runs through the courthouse.

Clocks have been made in forms that depend on the size and shape of the clock's mechanism. The 18th-century tall case, or grandfather, clock was made to hold a long pendulum.

Contentedly ticking away in a specially built shed in Nannup, Western Australia is possibly the largest working wooden tower clocks in the world. Built predominantly of jarrah by local Kevin Bird ...