History dating platform clock escapement
The Clock calculates the correct time, but will only display the correct time if you wind up its display wheel.
So yet another hand-turned wheel awaits your effort to update the face of time.
The meager dot of light above is not sufficient to see much otherwise.
Lights off, the Clock sits in near total darkness, talking to itself in slow clicks, for perhaps years at a time.
After you pass the weights, you arrive at the winding station. For the next 70-80 feet of ascent you pass 20 huge horizontal gears (called Geneva wheels), 8 feet in diameter, each weighing 1,000 pounds.
And “calculate” is the correct word, because cut into the gears is an elaborate system of slots and sliding pins, which, much like a Babbage Difference Engine, will perform digital calculations, generating the next sequence of the ten bells.The differential power is transmitted to the interior of the Clock by long metal rods.As long as the sun shines and night comes, the Clock can keep time itself, without human help.The Clock is designed to run for 10,000 years even if no one ever visits (although it would not display the correct time till someone visited).If there is no attention for long periods of time the Clock uses the energy captured by changes in the temperature between day and night on the mountain top above to power its time-keeping apparatus.
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In the darkness you can hear things moving, crisp non-random pings, like a crude thought trying to form inside a dim unlit brain.