What is a function on door knob?
An entry function lockset will have a small button on the inside of the knob/lever, allowing you to manually lock the door, when you choose. Most types will allow you to push the button in or push it in and turn the button, causing the lock to remain locked, even after a key is inserted and used.
What are the different types of doorknobs?
Doorknobs or Levers – There are four different types: keyed entrance, privacy, passage and dummy knobs. Deadbolts – These are often forgotten. Most exterior doors are also pre-drilled for deadbolts.
What are the door functions?
The main types of door functions are Passage (doors that don’t require locking), Privacy (a door that can be locked by a button on the inside), Dummy (has no mechanical latch and acts only as a pull), and Interior Mortise (door with an active latch with skeleton key lock).
What are the different functions of locks?
There are two functions that are most commonly used: electrically locked (fail-safe) or electrically unlocked (fail-secure). When electricity is applied to an electrically locked (EL) mortise lock, the outside lever is locked, but on most electrified lock functions, the inside lever always allows free egress.
What does UL function mean?
UL is an acronym for Underwriters Laboratories Inc. which is an independent product safety certification organizations. UL develops standards by which they test door hardware to verify that it meets certain safety requirements during use, or in the event of a fire or other circumstances. Not all locks are UL listed.
What is a function lockset?
Office Lock function is defined as a lock where the latch bolt operated by lever from either side unless outside is made inoperative by key outside or by turning inside thumbturn. When outside is locked, latchbolt is retracted by key outside or by knob/lever inside.
Are all door knobs universal?
To have the door function properly, you will have to make sure that the door knob you buy is the correct size for your door. The standard size for a door knob diameter is either 2 3/8 inches or 2 3/4 inches and these knobs will usually fit doors that are anywhere between 1 3/8 inches to 1 3/4 inches thick.
What is a door latch?
Door latches are a type of mechanical hardware used to fasten doors and keep them shut. A door latch uses a fastener attached to two ordinarily separated surfaces, most often the door and the frame, to prevent the door from swinging while still allowing normal operation when the latch is released.
What is an entry door knob?
Keyed Entry Door Knobs They’re used on front doors, patio doors, garage doors that go into your home or other exterior doors. Some have a button on the inside that you press to lock the door. Other keyed entry door knobs have a twist mechanism on one side that you turn to lock or unlock the door.
How many types of door locks are there?
There are plenty of other door locks and many fall within the five categories of knobs, deadbolts, cam locks, padlocks and mortise locks.
What is classroom function lock?
A classroom function deadbolt prevents an unauthorized person from projecting the deadbolt to secure a room without permission, but provides for safe egress by allowing the thumbturn to retract the deadbolt if an occupant is accidentally locked inside the room by someone projecting the bolt with a key.
What are the different types of interior door handles?
There are three main types of interior door handle or interior door knob, available in an array of styles and finishes. If you have new doors, then you can choose a lever handle on backplate, a lever handle on rose or a mortice knob. When chosen correctly they can provide the perfect finishing touch for both new and existing doors.
What is a vintage door knob?
Vintage Door Knobs, Handles & Ironmongery. The Vintage Door Knob Centre is a leading supplier of Victorian door handles & knobs. Our antique and period styles include beehive, reeded and bun in wood, brass and nickel.
What is a door knob used for?
The door knob is the most commonly used type of handle on doors that allow for its opening and closing. We supply door knobs in a wide variety of shapes, styles and finishes. Door knobs should be looked at as more than a functional piece of hardware as they not only add monetary value to the home, but also allow you to create…
What is a dummy-set doorknob?
A Full Dummy knob or handle set is mounted on both sides, inside and outside , of a door. The Half Dummy set is mounted only on the outside of a door. Dummy doorknobs or handles sit flush on a door and serve the purpose of allowing a person to open or close a closet or pantry door without locking it.