How to Make a Ratchet Mechanism A ratchet can be a very useful mechanism within an automaton. It can be used to keep the handle from being turned the wrong…
Interestingly, the motion derived from the smooth helical cam is jerky because the ratchet moves it in a series of 12 steps. The pin in the foreground moves back and…
A new one-off piece from Paul Spooner for 2009. The grey office worker surveys his papers moving endlessly between his in tray and his out tray. The elaborate air powered…
