Method and apparatus for stopping the spread of a fire in an und

Fire extinguishers – Processes

Patent

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Details

169 64, A62C 208

Patent

active

059097779

ABSTRACT:
An assembled length of water pipe sections having a nozzle pipe section at an inby end is moved from a crosscut of a mine into a mine entry to stop the advance of a fire in the entry without requiring firefighters to be positioned in the fire entry. The nozzle pipe section is moved across the entry to a position adjacent to an opposite entry sidewall. The nozzle pipe section is connected at an outby end in the crosscut by assembled sections of extension water pipes to a water feedline. Water under pressure is supplied through the extension pipes to the nozzle pipe section and discharged from the nozzles to generate a series of intersecting sprays directed at selected angles in a range between about 0.degree. to 90.degree. in the entry, forming a water curtain the complete height and width of the entry. Deflected water sprays from the sidewalls and mine roof combine with the upward water sprays to form a curtain of water extending across the path of the advancing fire and into contact with roof bolts supporting the mine roof above the entry. The water spray prevents the roof bolts from being heated to an elevated temperature which can cause a loss of anchorage of the bolts in the mine roof. The water curtain also cools the hot gases generated by the fire to stop advance of the fire beyond the curtain so that the fire can be contained and extinguished.

REFERENCES:
patent: 924599 (1909-06-01), Byers
patent: 1191643 (1916-07-01), Wilson et al.
patent: 1282142 (1918-10-01), Thompson
patent: 1368269 (1921-02-01), Lemke
patent: 2747933 (1956-05-01), Voigt
patent: 2769664 (1956-11-01), Cornelius
patent: 3684021 (1972-08-01), Poitras
patent: 3807635 (1974-04-01), Platt

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