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Normally, this problem can be identified by a dial that binds and is very hard to turn at a certain point, but turns freely for the rest of the dial rotation. (Similar to a bent spindle on a safe lock). | Normally, this problem can be identified by a dial that binds and is very hard to turn at a certain point, but turns freely for the rest of the dial rotation. (Similar to a bent spindle on a safe lock). | ||
==See Also== | |||
* [https://patents.google.com/patent/US1607758A/en Patent US1607758A] | |||
[[Category:American Lock]] | |||
[[Category:Combination locks]] | |||
[[Category:Lock Manufacturers]] | [[Category:Lock Manufacturers]] | ||
[[Category: | [[Category:Padlocks]] | ||
[[Category:People]] | |||
Latest revision as of 12:06, 25 March 2021
Junkunc
John Junkunc was a railroad employee who had a habit of losing keys. He then designed and made a combination lock so he could avoid the problem of losing keys.
One of his early versions next to a quarter for scale:
Locked
Unlocked
These early Junkunc combination padlocks had gates that lined up directly with the shackle. If someone were to try decoding the combination like a modern lock by pulling the shackle while dialing, the 'wheels' would become deformed as well as the shackle.
Normally, this problem can be identified by a dial that binds and is very hard to turn at a certain point, but turns freely for the rest of the dial rotation. (Similar to a bent spindle on a safe lock).
