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A fire sprinkler mounted on a ceiling. A fire sprinkler or sprinkler head is the component of a fire sprinkler system that discharges water when the effects of a fire have been detected, such as when a predetermined temperature has been exceeded. Fire sprinklers are extensively used worldwide, with over 40 million sprinkler heads fitted each year.
A sign warns hotel guests not to hang items from fire sprinklers. Each closed-head sprinkler is held closed by either a heat-sensitive glass bulb or a two-part metal link held together with fusible alloy. The glass bulb or link hold in place a "pip cap" which acts as a plug to prevent water from flowing, unless the ambient temperature around ...
Impact sprinkler head. An impact sprinkler (sometimes called an impulse sprinkler) is a type of irrigation sprinkler in which the sprinkler head, driven in a circular motion by the force of the outgoing water, pivots on a bearing on top of its threaded attachment nut. Invented in 1933 by Orton Englehart, it quickly found widespread use.
Henry S. Parmelee (c. 1846 – 1902), president of the Fair Haven and Westville Street Railway Company, was a piano maker from New Haven, Connecticut.He took the idea of Sir Hiram Maxim and then invented the second automatic fire sprinkler system in 1874, to protect his piano factory. [1]
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Nannie Doss confessed to killing four of her husbands, her mother, sister, two of her children, two of her grandsons, and a mother-in-law over a 27-year killing spree
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