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4: How does the winding mechanism work?


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Weight Drum
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Ratchet Mechanism
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Weight
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Pulley blocks
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Turning the handle rotates the winding shaft of the clock. This movement is conveyed to the weight drum, around which the steel cable winds, like on a huge metal reel, lifting the weight. A ratchet makes it possible to wind the clock without it stopping. To raise all the weights, you have to turn all three winding mechanisms. At one time the depth of the shaft was about 16.5 metres, or roughly half the height of the Winter Palace, while the clock had to be wound every day! It is easy to imagine how exhausting such work must have been. Now a complicated system of pulleys is used to raise the weights and that made it possible to increase the length of time the clock runs on a single winding and shorten the shaft to 4.6 metres.

 

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