An American inventor, "The Times" points put, proposes :to.dispenso with the dangerous ;'and expensive gas now employed to fill tho envelope of tho,. dirigible t balloon. He reverts 'to tho idea of the original Mohtgolfier .■bal-' loon, in which hot air afforded tho lifting power.' In the new i ship, ; however, the hot' air and-heated gases arc derived- from tho petrol engine- Instead of these, oxhaust ; gases: being directly dissipated in-the atmbspliorePns /at ..'present;, .they iare firgj;' directed. ' into tho o'nv'elopoj passing out by-a valvo hs they cool and contract. ''Thus as long as the engine is running -the inventor believes' that it will bo easy to keep the envelope filled .with a steam of heated; air and of such > buoyant natnro.that his ship-willkeep.high Jahow ttoaoiiad,' .'' : .
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Dominion, Volume 2, Issue 555, 9 July 1909, Page 4
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126Untitled Dominion, Volume 2, Issue 555, 9 July 1909, Page 4
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