Table of Contents
Parts of a Door Lock Knobs and Handles. The common door lock will have two knobs or handles—one on the inside of the door and one on the outside. Rosette. The rose or rosette is typically a round plate that serves two functions. Lock Cylinder. Spindle. Latch Assembly and Spring Bolt. Deadlocking Plunger.
What is the inside of a door latch called?
The Bolt: Also called the latch, the bolt engages the inside of the door. There is a piece of metal that extends from the door into the frame itself. This bolt is used to hold it closed. The Box:The bolt extends from the cylinder into a hole that is designed to fit the bolt perfectly.
What are the names of door handle parts?
The parts of a door handle include knobs/levers, latch mechanisms, strike plates, boxes and cylinder locks.
Why do door latches have two parts?
The main latch is supposed to fall into the strike hole on the door frame, the little part is supposed to sit on the surface of the strike (not fall into the hole). This feature is meant to keep someone from retracting the latch from the outside of the door with a credit card or other device.
What is a door latch spindle?
What is a spindle? A spindle is a rod of metal, square in section, that is used to connect two door knobs together. It passes through the mortice latch or tubular lock (located within the door) and the two handles slot on either side of the door.
What is a door latch guard?
Door latch guards prevent unauthorized access to the latch bolt on a lock set, which helps deter break-ins and avoid repairs. They are commonly used with mortise and cylindrical lock sets and can be installed in both left- and right-facing applications.
What are the parts of a door frame?
Door part names Door frame. The door frame is the entire framework supporting the door, including the sill, jamb and head. Sill. The door sill is the very bottom part of the door frame that rests on the floor. Jamb/door jam. Head. Panel. Astragal. Fixed panel. Door sweep.
What is a latch bolt?
Latch bolt An extremely common latch type, typically part of a lockset, it is a spring-loaded bolt with an angled edge. When the door is pushed closed, the angled edge of the latch bolt engages with the lip of the strike plate; a spring allows the bolt to retract.
What is door strike?
When discussing door hardware, a “strike” or “door strike,” refers to the metal plate or assembly that’s installed into or onto a door frame to “catch” the latch or bolt to hold the door closed.
What does an auxiliary Latchbolt do?
Auxiliary latch deadlocks latchbolt when door is closed. Inside lever is always free for immediate egress. Latchbolt retracted by knob/lever from either side unless outside is locked by key from either side. When locked, latchbolt re- tracted by key outside or knob/lever inside.
What is the hole in the door frame called?
Bore holes are the holes in the door that house your door hardware and allow it to be installed. The cross bore is the main hole drilled into the face of the door where the body of the lock (chassis) is installed.
What is a door plunger?
“Deadlocking plunger” (also called “deadlatch plunger” or “deadlock plunger”) is the name of a very important piece of a door lock assembly; it keeps a locked door from being opened with a small screwdriver or credit card.
What is a door knob shank?
The shank is the projecting stem of a knob and contains a hole or socket to receive the spindle. The knob rose is a round plate or washer that forms a knob socket and is adapted for attachment to the surface of a door. The knob is attached to the spindle, a metal shaft that turns the latch of the lock.
What is split spindle door handle?
Split spindle locking is visually the same as the lever handle locks, with a lever handle inside and out, the difference being the handles work independently of each other. PROS – If you close the door from inside it locks on the latch, so no one can enter.
What are the parts of a mortice lock called?
The parts included in the typical US mortise lock installation are the lock body (the part installed inside the mortise cut-out in the door); the lock trim (which may be selected from any number of designs of doorknobs, levers, handle sets and pulls); a strike plate, or a box keep, which lines the hole in the frame.
What is the latch plate?
Latch guards are metal plates that cover exposed latches and keep them from being tampered with. In order to gain forced access, a latch may be cut or pryed; but a latch guard can keep this from happening.
What is a lock guard?
A lock guard is an object that manages a mutex object by keeping it always locked. It is the simplest lock, and is specially useful as an object with automatic duration that lasts until the end of its context. In this way, it guarantees the mutex object is properly unlocked in case an exception is thrown.
What is a door sash?
A sash door is a door that is partly constructed of glass and the door sash refers to the glass part of that door. The sash may include a single pane of glass or a collection of smaller panels. Sash doors are becoming increasingly popular for their ability to bring natural light and fresh air into closed off spaces.
