Sweet Dreams PaperCraft Automata

On 16 September 2005, the automaton Sweet Dreams was launched on the web. At that time, it was considered the first paper automaton employing the mechanism called Geneva stop. 


 

The Geneva stop (or Geneva drive) is a mechanism that translates a continuous rotation into an intermittent rotary motion. It is an intermittent gear where the drive wheel has a pin that reaches into a slot of the driven wheel and thereby advances it by one step. The drive wheel also has a raised circular blocking disc that locks the driven wheel in position between steps. The name derives from the device’s earliest application in mechanical watches, Switzerland and Geneva being an important center of watchmaking. One application of the Geneva drive is in movie projectors: the film does not run continuously through the projector. Instead, the film is advanced frame by frame, each frame standing still in front of the lens of 1/24th of a second. (from Wikipedia)

Technical Data
Mechanism: Geneva Stop
Number of parts: 40
Size: mm 120x85x210(h)
Paper: 160 gsm (US 90 lb card stock)
Instructions: in Italian, in English, color illustrated
Difficulty: 3/5        

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