AboutdotcomArxivat 2013-01-16 at Archive.isCowen was an inventor of sorts; he developed a fuse to ignite photographic flash powder. Though the invention failed in its intent, the U.S. Navy bought up the fuses to use with underwater explosives.
americanheritage.com
Invention & Technology MagazineArxivat 2008-12-02 a Wayback Machine. In the 1890s Cowen invented several devices that could be powered by the newly available dry-cell batteries. One was a fuse for igniting photographic flash powder. The Navy ordered 24,000 of them to use as detonators for underwater mines.
archive.today
AboutdotcomArxivat 2013-01-16 at Archive.isCowen was an inventor of sorts; he developed a fuse to ignite photographic flash powder. Though the invention failed in its intent, the U.S. Navy bought up the fuses to use with underwater explosives.
«Photoflash bulbs». Darklight Imagery. Arxivat de l'original el 28 agost 2014. [Consulta: 23 octubre 2014]. «The largest flashbulb, the mammoth GE Mazda Type 75, was initially developed to be used as a source of light for night time aerial photography during world war II. The Mazda 75 measured over eight inches long and had a girth of 14 inches!»
eastmanhouse.org
image.eastmanhouse.org
«The First Flash Bulb». Image, Journal of Photography of George Eastman House, 2, 6, 11-1953, pàg. 34. Arxivat de l'original el 14 juliol 2014 [Consulta: 26 juny 2014].Arxivat 14 de juliol 2014 a Wayback Machine.
Wightman, Dr. Eugene P. «Photoflash 62 Years Ago». Image, Journal of Photography of George Eastman House, IV, 7, pàg. 49–50. Arxivat de l'original el 9 agost 2014 [Consulta: 4 agost 2014].Arxivat 9 August 2014[Date mismatch] a Wayback Machine.
The History of the FlashlightArxivat 2009-01-07 a Wayback Machine. Cowen was an inventor of sorts; he developed a fuse to ignite photographic flash powder. Though the invention failed in its intent, the U.S. Navy bought up the fuses to use with underwater explosives.
Joshua Lionel Cowen at a glanceArxivat 2018-12-07 a Wayback Machine.
In 1899, he patented a device for igniting photographers' flash powder by using dry cell batteries to heat a wire fuse. Cowen than parlayed this into a defense contract to equip 24,000 Navy mines with detonators.
lonestarhirailers.com
The Lionel StoryArxivat 2011-10-08 a Wayback Machine. In 1899, he patented a device for igniting photographers' flash powder by using dry cell batteries to heat a wire fuse. Cowen than parlayed this into a defense contract to equip 24,000 Navy mines with detonators.
thisdayinjewishhistory.blogspot.com
This day in Jewish HistoryJoshua Lionel Cowen passed away. Born in 1880, he was the American inventor of electric model trains who founded the Lionel Corporation (1901), which became the largest U.S. toy train manufacturer. At age 18, he had invented a fuse to ignite the magnesium powder for flash photography, which the Navy Department bought from him to be a fuse to detonate submarine mines.
Joshua Lionel Cowen at a glanceArxivat 2018-12-07 a Wayback Machine.
In 1899, he patented a device for igniting photographers' flash powder by using dry cell batteries to heat a wire fuse. Cowen than parlayed this into a defense contract to equip 24,000 Navy mines with detonators.
Invention & Technology MagazineArxivat 2008-12-02 a Wayback Machine. In the 1890s Cowen invented several devices that could be powered by the newly available dry-cell batteries. One was a fuse for igniting photographic flash powder. The Navy ordered 24,000 of them to use as detonators for underwater mines.
The Lionel StoryArxivat 2011-10-08 a Wayback Machine. In 1899, he patented a device for igniting photographers' flash powder by using dry cell batteries to heat a wire fuse. Cowen than parlayed this into a defense contract to equip 24,000 Navy mines with detonators.
The History of the FlashlightArxivat 2009-01-07 a Wayback Machine. Cowen was an inventor of sorts; he developed a fuse to ignite photographic flash powder. Though the invention failed in its intent, the U.S. Navy bought up the fuses to use with underwater explosives.
«The First Flash Bulb». Image, Journal of Photography of George Eastman House, 2, 6, 11-1953, pàg. 34. Arxivat de l'original el 14 juliol 2014 [Consulta: 26 juny 2014].Arxivat 14 de juliol 2014 a Wayback Machine.
Wightman, Dr. Eugene P. «Photoflash 62 Years Ago». Image, Journal of Photography of George Eastman House, IV, 7, pàg. 49–50. Arxivat de l'original el 9 agost 2014 [Consulta: 4 agost 2014].Arxivat 9 August 2014[Date mismatch] a Wayback Machine.
«Photoflash bulbs». Darklight Imagery. Arxivat de l'original el 28 agost 2014. [Consulta: 23 octubre 2014]. «The largest flashbulb, the mammoth GE Mazda Type 75, was initially developed to be used as a source of light for night time aerial photography during world war II. The Mazda 75 measured over eight inches long and had a girth of 14 inches!»
