the german zechariah greil suggested using it in the fight against the fire element somewhere at the5th century. the barrel was filled with 20 liters of water and equipped with a small amount of gunpowder. if a fire started, the barrel was set on fire and rolled out into flame, it exploded and put out the fire. how did the first one appear? at least vaguely similar to a modern fire extinguisher, i’ll tell you right now. in 1734, in germany, the doctor fuchs proposed extinguishing fires using a glass ball of salt water. he was thrown into the flames, where the ball broke. the saxon engineer kühn invented a fire extinguishing box that contained a mixture of... vitres of coal and, when ignited, released a gas that prevented the spread of fire. the first such box was tested in 1846. and the first explosive powder fire extinguisher was called pozharogaz and it was invented by the russian engineer naum sheftal in the second half of the 19th century. well, the first foam fire extinguisher well known to modern man was invented by russian engineer alexander lorran. the scientist spent a long