They set a miniature roof on fire, and even help it to burn fiercely: by applying a wind machine in its direction.... all so that they may deter. mine the degree of fire resistance in that material They have the most ingenious machines for torturing, twisting and destroying all sorts of gadgets which are used in the office, the home or the factory, To test a safe they will fill it with papers, and then put it in a gas fire furnace where the heat goes up to 2,000 degrees, for one hour, When it comes out it is onto a pile of bricks... what might happen in a fire. But, that is not the end. If it passes that test it goes back into the furnace for another hour....and all so that that particular type can have a small tag attached. f it passes the test.
That chap, for instance, who threw the match in the gasoline. His job was to watch till that fire got to its maximum heat then apply a test with a standard type of fire extinguisher. If it did not put out that fire completely within so many seconds, the manufacturer would be told to redesign it and adjust his formula until it could pass the test with flying colours,
Text read from the printed page and cleaned; old type leaves the occasional error.