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Inventions During My Lifetime


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1784 - The bifocal lens is invented (Benjamin Franklin, United States)

"While living in Paris, Franklin hated having to change constantly from reading glasses to distance glasses. He directed an optician to cut two pairs of lenses horizontally in half and mount them in... Read MORE...


1784 - The oil lamp is invented (Aimé Argand, Switzerland)

"Argand burner, first scientifically constructed oil lamp, patented in 1784 in England by a Swiss, Aimé Argand. The first basic change in lamps in thousands of years, it applied a principle that was... Read MORE...

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1793 - The cotton gin is invented (Eli Whitney, United States)

"In 1793, Eli Whitney invented a simple machine that influenced the history of the United States. He invented a cotton gin that was popular in the South. The South became the cotton producing part... Read MORE...

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