Mechanism of escalator

I will describe the mechanism of "Escalator", which transports many people one after another.

As you've already noticed, people come out with a staircase from the underground.

Now, I made an escalator to show the mechanism. With a motor, a gear, and caterpillar-parts, the escalator revolves endlessly.

The staircase part on the caterpillar is angular-adjusted with hinge-parts.

Taking the descending escalator for example ... you can see a man with staircase coming up from the hole in front of the figure wall painting.

When they get off the escalator ... I mean, they just go under the ground like a gentleman with top hat. And then, after making a circuit, the gentleman with top hat will appear from the top of the escalator.

Here he comes ! (^o^)

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