Editing Door handle (section)

==Types==
[[File:Poignée-porte.jpg|thumb|right|Pull handle]] [[File:Doorknob parts.JPG|thumb]]

*The most common type of door handle is the '''Lever latch''' or '''Latch''' door handle, often found in residential houses and commercial and public buildings. Doors fitted with this handle have a latch that keeps the door shut. The door handle has only a lever handle or knob which operates this latch. Pushing the handle down rotates the spindle, operating the tubular latch mechanism inside the door, allowing it to be opened.<ref>[http://www.grovefittingsshop.co.uk/Articles.asp?ID=254 Different Types of Door Handles Explained] {{webarchive|url=https://web.archive.org/web/20161117063557/http://www.grovefittingsshop.co.uk/Articles.asp?ID=254 |date=2016-11-17 }} retrieved November 2016</ref> This type of door handle is used on interior doors that do not need to be locked. The doorknob has a spindle running through it that sits just above a cylinder, to which the spindle is connected. Pushing the lever or turning the knob pulls the cylinder in the direction of the turn. The end of the cylinder is the "[[Spring bolt lock|latch bolt]]" (more simply known as the "latch"), which protrudes into a space carved out of the door frame, and which prevents the door from being opened if the knob is not turned. A spring or similar mechanism causes the latch to return to its protruding state whenever the knob is not being turned. 
*The '''Lever lock''' door handle on a backplate is another type of door handle which operates similarly to the lever latch door handle.<ref>[http://www.priorsrec.co.uk/blog/buying-door-handles-things-you-need-to-know/ Buying Door Handles – Things You Need To Know] {{webarchive|url=https://web.archive.org/web/20161116230358/http://www.priorsrec.co.uk/blog/buying-door-handles-things-you-need-to-know/ |date=2016-11-16}} retrieved November 2016</ref> This type of handle on a backplate consists of a lever with a keyhole cut just below it. This allows a key to be inserted into the door to control a mortice sash lock. Just the like the lever latch, the door can be opened and shut by pushing the handle, but it can also be locked with a key. This locking mechanism is used on doors which can be opened by turning the handle if not locked, but can also be locked, requiring a key to open them.
*The '''Lever Bathroom''' is typically used on bathroom doors, as they can be locked and unlocked easily from the inside by turning the snib, but in an emergency, they can be opened from the outside by fitting a coin or similar object into a slot and rotating it. This lock is fitted with a mortice sash attached to a 5mm spindle which passes through the door.
*The '''Lever Privacy''' is functionally similar to the Lever Bathroom in that it is locked by turning a snib on the inside and can be unlocked from the outside in emergencies. Unlike the Lever Bathroom, there is no mortice sash; locking is achieved by jamming the lever in a closed position.<ref>[http://www.doorhandlecompany.co.uk/blog/master-of-unlocking-the-different-types-of-door-handles/ Master of Unlocking: The Different Types of Door Handles] {{webarchive|url=https://web.archive.org/web/20161116230258/http://www.doorhandlecompany.co.uk/blog/master-of-unlocking-the-different-types-of-door-handles/ |date=2016-11-16 }} retrieved November 2016</ref>
* '''Pull door handles'''m or simply '''pull handles'''m are U-shaped, and are typically used in kitchens and on drawers. They are usually made of [[stainless steel]].