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A door closer is a mechanical device that regulates the speed and action of a door’s swing. [1] Manual closers store the force used to open the door in some type of spring and reuse it to close the door. Automatic types use electricity to regulate door swing behavior. Door closers can be linked to a building's fire and security alarm systems. [2]
Some are built on top of a standard door closer. To open the door, the operator forces the closer in the opening direction. Then, the closer closes the door. The user may open the door manually, using just the door closer. In case of power failure while the door is open, the closer itself closes the door. Some are built without a door closer.
The intumescent and smoke-seal bounding of fire doors should be routinely checked, as should the action of the door closer and latch. Some fire doors are held open by an electromagnet, which is typically wired to a fire alarm system. If the power fails or the fire alarm is activated, the coil is de-energized, and the door closes.
A doorstop (applied) may also be a small bracket or 90-degree piece of metal applied to the frame of a door to stop the door from swinging (bi-directional) and converting that door to a single direction (in-swing push or out-swing pull). The doorstop can be a separate part or integrated with a hinge or door closer.
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New for 1968 was the option of AMC's 232 cubic inch inline-six engine, rather than International's own BG-series six. [11] The Travelall was considered a version of the light-duty pickup range, rather than a separate model, until major changes to the bodywork took place in 1969 for the 1970 model year.
In 1928, Weihrauch began international sale of bicycle parts and mechanical door closers. During World War II, Weihrauch continued production of spare parts for bicycles. Otto Weihrauch became a mechanic and later a gunsmith in Zella-Mehlis. Werner worked at Jagdwaffenwerk (Hunting Weapon Factory) in nearby Suhl.
Violent crime in hospitals is up, self-reported hospital data shows, with incidents of assault, rape, sexual assault and homicide rose 77% over the past two years.
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