1770 Mechanical Turk chess machine

[mklotz]

The mechanism seems fairly simple in concept...

Two wheels on the same shaft, said shaft attached to a mechanism that can index it and raise and lower it. On the circumference of the wheels at each index position are mounted studs that terminate in the items that will appear under the cups.

When the cups are down, the wheels lower, index and then push the new objects up through (spring-loaded) holes under the cups. Then the cups are lifted to reveal the new items and the process repeats.

Probably less than a day to build a working model with Lego or Meccano parts.