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A door handle or doorknob is a handle used to open or close a door. Door handles can be found on all types of doors including exterior doors of residential and commercial buildings, internal doors, cupboard doors and vehicle doors. There are many designs of door handle, depending on the appropriate use. A large number of handles, particularly ...
Mortise lock. The two main parts of a mortise lock. Left: the lock body, installed in the thickness of a door. This example has two bolts: a sprung latch at the top, and a locking bolt at the bottom. Right: the box keep, installed in the doorjamb. A mortise lock (also spelled mortice lock in British English) is a lock that requires a pocket ...
Metal fire-resistance rated door with a lockset consisting of a locking latch bolt operated by lever handle with an escutcheon that encompasses the locking mechanism.. A lockset (alternatively lock set) is the hardware and components that make up the locking or latching mechanism that can usually be found on a door or other hinged object but can also include sliding doors and dividers. [1]
The cylindrical lock was invented by the German-born engineer Walter Schlage [4] in 1923. [5] The bored cylindrical lock arose from a need for a more cost-effective method of locking doors. The previous norm (still the norm in Europe), the mortise lock, is a more complex device, and its higher manufacturing cost as well as its more labor ...
The way to do it is easy; some even say embarrassingly so. Using your hand or foot, bend the door stop down and push the door back towards the wall as far as you can. Note that your hand or foot ...
A glass relocking device is a piece of glass, usually tempered, placed where it might be expected to break in a burglary attack. It is attached, usually with wires, to one or more spring-loaded bolts, which are often randomly located. A drill or torch may break the glass, releasing the bolts. Key cut.
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