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Weinstein & Holtzman School

G L O S S A R Y   O F   T E R M S
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z All

Latch Bolt

A beveled spring bolt, usually operated by a knob, handle or turn.

Leaf (of a pair of doors)

One of the two doors forming a pair of doors.

Letterbox Back Plate

A plate, similar to a letterbox plate, attached to the inside of a door to allow the passage of mail.

Letterbox Plate

A plate attached to the door with an opening to permit insertion of mail.

Lever Handle

A horizontal handle for operating the bolt(s) of a lock.

Lever Tumbler

Flat tumbler having a pivoted motion actuated by the turning of the key and controlling the locking function.

Lip of a Strike

The projecting part on which the latch bolt rides.

Lock Rail (of the door)

The horizontal member of a door intended to receive the lock case.

Lock Set

A lock, complete with trim, such as knobs, escutcheons or handles.

Lock Stile (of a door)

The stile to which the lock is applied as distinguished from the hinge stile.

Loose Joint Hinge

A hinge having but two knuckles; the pin is fastened permanently to one knuckle, the other contains the pinhole, whereby the two parts of the hinge can be disengaged by lifting. These hinges are handed.

Loose Pin Hinge

A hinge having a removable pin to permit the two parts of the hinge to be separated.
 

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