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Sounds like an interesting way to get locked out of your house.

You would need successful uses of the key to reset the ratchet or every 5 times you opened your door it would become inoperable for 10 minutes, assuming the spring for the timer hasn't rusted or got a bit of grit in it or whatever.




Revised:

- Each [failed] attempt to rotate the cylinder could partially compress a spring-loaded lever.

- The return mechanism would always return if not in its resting position, not only after each 5 failures.

- Successful attempts immediately reset the spring.




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