The Weinstein & Holtzman School / Glossary

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

Cam (of a cylinder)

A rotating piece attached to the end of the cylinder plug to engage the locking mechanism.

Cane Bolt

A heavy cane-shaped bolt with the top bent at right angles; used on the bottom of doors.

Case (of a lock)

The box containing the lock mechanism.

Casement Hinge

A hinge to swing a casement window. The term is often used to describe a hinge designed to throw the sash out far enough to permit cleaning the outside of the glass from the inside of the room on an outward-swinging casement.

CDC

Indicates that the individual so identified is a Certified Door Consultant and member of the Door and Hardware Institute.

Chain Bolt

A spring bolt actuated by a chain attached to the spring bolt for application at the top of the door.

Chain Door Fastener

A device that limits the opening of a door by means of a chain.

Changes (Key)

The different bittings or tumbler arrangements in a series of locks.

Checking Floor Hinge

A device placed in the floor that combines top and bottom pivots for hanging the door with a controlledspeed closing mechanism.

Continuous Hinge (also called Piano Hinge)

A hinge designed to be the same length as the moving part to which it is applied as, for example, the lid covering the keyboard of a piano.

Coordinator

A device used on a pair of doors to ensure that the inactive leaf is permitted to close before the active leaf. Necessary when an overlapping astragal is present and exit devices, automatic or selflatching bolts are used with closers on both door leaves.

Cremone Bolt

A device of surface application that, by a turn of knob or lever handle, locks the door or the sash into the frame, top and bottom.

Cup Escutcheon

A door plate, for use on sliding doors, having a recessed panel to afford finger hold and to contain a flush ring and sometimes a cylinder, all being flush with the surface of the plate.

Cylinder (of a lock)

The cylindrical-shaped assembly containing the tumbler mechanism and the keyway which can be actuated only by the correct keys.

Cylinder Collar

A plate or ring used under the head of a cylinder.

Cylinder Lock

A lock in which the locking mechanism is controlled by a cylinder.

Cylindrical(locks and latches)

A term used to describe bored locks, which have a cylindrical case into which a separate latch bolt case fits.

Cylinder Screw

The set screw that holds a cylinder in place by preventing the cylinder from being turned after installation.