Archimedean spiral jack
Blue ratchet wheel has Archimedean spiral rib that engages with green rack. Parameters of the spiral must be chosen to maintain the self-locking tr...
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![[hindi] how to draw Archimedean Spiral](https://sun9-61.userapi.com/c846320/v846320885/144da8/bZQQEAwUjuA.jpg)
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