mortise latch

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mortise lock

mortise lock
A lock designed to be installed in a mortise rather than applied to a door’s surface.
McGraw-Hill Dictionary of Architecture and Construction. Copyright © 2003 by McGraw-Hill Companies, Inc.
References in periodicals archive ?
Manufactured by Ilco Unican of precision-machined, all-metal components, the locks feature push-button housings, inside and outside push/pull paddles, mortise latch mechanisms, and strike plates.
The University of Michigan's Medical Center addressed all three problems by installing mortise latch sets that protect property, allow easy access to ORs during surgeries, and prevent mentally ill and depressed patients from seriously injuring themselves or others.
Cylindrical or mortise latches are available in popular lever/knob styles and finishes.