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The Safety Pin
Essay # 14467
The Safety Pin
Examines its invention, description, physics and operation.
450 words (approx. 1.8 pages) |
4 sources |
1999
Paper Summary:
"In 1849 Walter Hunt of New York City patented the safety pin. He constructed it from a piece of brass wire about eight inches long, coiled at the center and shielded at one end.From the Paper:
"In 1849 Walter Hunt of New York City patented the safety pin. He constructed it from a piece of brass wire about eight inches long, coiled at the center and shielded at one end. Reportedly Mr. Hunt invented the safety pin in order to pay off a $15 debt. Later, Mr. Hunt sold the patent for his device for $400 (Those were the days, 1998)."Description
The safety pin is a clever combination of a locking device coupled with a torsion spring to provide potential energy, ensuring a close fit. This unique performance makes this spring a very..."
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APA Citation:
The Safety Pin (2012, January 15). Retrieved February 11, 2012, from http://www.academon.com/Essay-The-Safety-Pin/14467
MLA Citation:
"The Safety Pin" 15 January 2012. Web. 11 Feb. 2012. <http://www.academon.com/Essay-The-Safety-Pin/14467>
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