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Sunday, October 30, 2005

Karakuri: Tea Server

An example of Japan’s first robot is the fascinating Karakuri: Tea Server, designed almost four centuries ago and today remains a remarkable example of Japan’s keen sense of robotics. What does it do? This Kabuki-styled doll approaches surprised guests with a full teacup on a tray; it stops walking when the teacup is taken, waits quietly, bows, then slowly turns around, smoothly scooting away with the empty teacup on its tray...
This kit is made of computer designed precision modern materials, but is as close to the original design as possible.
The driving force of the original tea-carrying doll came from a spring made of whale whiskers (actually whale teeth).
All the other components, such as its gears, body and escapement for speed adjustments, were made of wood. How does it work? When a tea cup is placed on the tray, the stopper is released by the whale spring attached to the doll’s arms; the spring forces the stopper to engage again when the cup is lifted from the tray.

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6:40 pm  

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