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lever tumbler

   Also found in: Dictionary/thesaurus, Wikipedia 0.01 sec.
lever tumbler
A flat tumbler in a lock; has a pivoted motion which is actuated by the turning of the key, thereby controlling the lock.
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Keying, as mentioned before can be the lever tumbler, mogul, or builders hardware.
Doors & Hardware by Madden, Jess / Doors and Hardware
In 1865, with patent #48,475, Yale's invention of the pin tumbler mortise cylinder lock completely changed the art of door locks from lever tumbler locks with large keys to an adjustable pin tumbler cylinder to adjust for various door thicknesses.
Pioneers all by Griffith, Donald R.; Hennessy, Tom / Doors and Hardware
 
 
 
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