auxiliary dead latch

auxiliary dead latch

[ȯg′zil·yə·rē ′ded ‚lach]
(design engineering)
A supplementary latch in a lock which automatically deadlocks the main latch bolt when the door is closed. Also known as auxiliary latch bolt; deadlocking latch bolt; trigger bolt.

auxiliary dead latch, auxiliary latch bolt, deadlocking latch bolt, trigger bolt

A supplementary latch in a lock which automatically deadlocks the main latch bolt when the door is closed.
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