December 2002
Intermediate to advanced
584 pages
19h
English
Content preview from Asset Protection and Security Management Handbook
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99
General Locking Concepts
Figure 10. Labeled cutaway drawing of mortise lock.
AU1603 ch01 frame55.book Page 99 Saturday, October 26, 2002 8:32 PM
100
ASSET PROTECTION AND SECURITY MANAGEMENT HANDBOOK
Office Function.
The latchbolt is retracted by the handle from either
side unless the outer handle is made inoperative, using a key on the outside
or a thumbturn on the inside. The auxiliary latch deadlocks the latchbolt
when the door is closed. Note that a
latchbolt
is the spring-loaded, triangu-
lar-shaped component that is pushed into the lock case by the strike plate
as the door closes and springs into the hole in the strike plate once the