Lock Glossary
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Action - The arrangements of
live or latch bolts and their accessories in
a lock or latch, and how they function i.e.
This lock has a nice action, nice and
smooth.
Alike (keyed) - More than
one lock or latch which can be operated by
the same key.
All to pass - Often referred
to as “locks to pass” i.e. a
number of locks which can be passed or keyed
alike (opened by the same key).
Anti-thrust bolt - A spring
bolt, for a night latch particularly, which
cannot be pushed back when it has shot out
and locked a door, although it can be
withdrawn by a knob or key.
Anti-thrust plate - An
overlapping metal plate fitted to outward
opening doors so as to prevent access to lock
bolts.
Automatic deadlatch - A
deadlatch, the main bolt of which is
automatically locked (or deadlocked) when the
door is closed.
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