![]() Tokyo Fire Department conducting a fire hose drill Its wrapped construction resembled some hoses used today by industry, for example, fuel delivery hoses used to service airliners. ![]() It also proved more durable than unlined linen hose. This rubber hose was as bulky, heavy, and stiff as a leather hose, but was not prone to leaking. įollowing the invention of the vulcanization process as a means of curing raw soft rubber into a harder, more useful product, the fire service slowly made the transition from bulky and unreliable leather hose to the unlined linen hose, then to a multi-layer, rubber lined and coated hose with interior fabric reinforcement. In January 1981, the Occupational Safety and Health Administration revised their standards such that unlined hoses were to no longer be installed for interior hose lines. They continued to be used on interior hose lines and hose rack until the 1960s to 1980s. Unlined hoses, because of their lack of durability, were rapidly replaced with rubber hoses in municipal fire service use. As the hose fibers, made of flax, became wet, they swelled up and tightened the weave, causing the hose to become watertight. Īround 1890, unlined fire hoses made of circular woven linen yarns began to replace leather hoses. The sewn leather hose tended to burst, so a hose fabricated of leather fastened together with copper rivets and washers was invented by members of Philadelphia's Humane Hose Company. This canvas hose proved insufficiently durable, and sewn leather hose was then used. In the United States, the fire hose was introduced in Philadelphia in 1794. Van der Heyden was also credited with an early version of a suction hose using wire to keep it rigid. Even with the limitations of pressure, the attachment of the hose to the gooseneck nozzle allowed closer approaches and more accurate water application. These 50-foot (15 m) lengths of leather were sewn together like a boot leg. In Amsterdam in the Dutch Republic, the Superintendent of the Fire Brigade, Jan van der Heyden, and his son Nicholaas took firefighting to its next step with the fashioning of the first fire hose in 1673. It was not until the late 1860s that hoses became widely available to convey water more easily from the hand pumps, and later steam pumpers, to the fire. Original hand pumpers discharged their water through a small pipe or monitor attached to the top of the pump tub. Until the mid-19th century, most fires were fought by water transported to the scene in buckets. On occasion, fire hoses are used for crowd control (see also water cannon), including by Bull Connor in the Birmingham campaign against protesters during the Civil Rights Movement in 1963. Therefore, the typical fire station often has a high structure to accommodate the length of a hose for such preventive maintenance, known as a hose tower. Hoses are divided into two categories, based on their use: suction hose, and delivery hose.Īfter use, a fire hose is usually hung to dry, because standing water that remains in a hose for a long time can deteriorate the material and render it unreliable or unusable. It is necessary to convey water either from an open water supply, or pressurized water supply. ![]() Hose is one of the basic, essential pieces of fire-fighting equipment. The usual working pressure of a firehose can vary between 8 and 20 bar (800 and 2,000 kPa 116 and 290 psi) while per the NFPA 1961 Fire Hose Standard, its bursting pressure is in excess of 110 bar. Indoors, it can permanently attach to a building's standpipe or plumbing system. Outdoors, it attaches either to a fire engine, fire hydrant, or a portable fire pump. Indoor fire hose with a fire extinguisherĪ fire hose (or firehose) is a high-pressure hose that carries water or other fire retardant (such as foam) to a fire to extinguish it.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |