A safety wood tv.iich exhales its own fire extinguisher was lately exhibited in New York by Professor Albin H. Beyer, of Columbia University. A 2in. thick wooden door held back smoke and flames six times as long as did a metalcovered door. Beyer explained that the protective moisture is p <ecret chemical preparation which is produced on the surface of the wood. It is like glue and is made by the touch of flames combining wi'' 'hemicals soaked into the wood. The wet skin retards Are, which, however, eats it off slowly, leaving a charred black film. As soon as this top skin is eaten through a new layer forms underneath, because the chemicals impregnate the wood completely.
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Press, Volume LXVI, Issue 20028, 9 September 1930, Page 16
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118Page 16 Advertisements Column 1 Press, Volume LXVI, Issue 20028, 9 September 1930, Page 16
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