Mortise Lock Functions: New functions to old favorites

by Tom Gillespie
Created:

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  • A mortise lock that has a lock cylinder on the exterior only. No lock cylinder on the interior. No knob or lever on the interior or exterior.
  • A mortise lock whose latchbolt is retracted by knob or lever from either side unless outside is locked by key from either side. When locked, latchbolt is retracted by key from outside and by knob or lever inside. Retracting latchbolt by key unlocks outside knob or lever. Auxiliary latch deadlocks latchbolt when door is locked.
  • A mortise lock whose latchbolt is retracted by knob or lever from either side unless outside is locked by key from either side. When locked, latchbolt is retracted by key from outside and by knob or lever inside. Retracting latchbolt by key unlocks outside knob or lever. Auxiliary latch deadlocks latchbolt when door is locked. Depress inside knob or lever and turn key 360 degrees for holdback feature.

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