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A pin is a device used for fastening objects or material together. It is usually made of steel, or on occasion copper or brass. It is formed by drawing out a thin wire, sharpening the tip, and adding a head.
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A pin is a device used for fastening objects or material together. It is usually made of steel, or on occasion copper or brass. It is formed by drawing out a thin wire, sharpening the tip, and adding a head.
Other types
The t-pin is a more easily grasped type, with a head made by bending the pin back on itself.
The push pin, with a large plastic head, was invented in 1903 by Edwin Moore and quickly became a success. These pins are also called "thumbtacks".
Walter Hunt invented the safety pin by forming an eight-inch brass pin into a bent pin with a spring and guard. He sold the rights to his invention to pay a debt to a friend, not knowing that he could have made millions of dollars.
See also
- Bobby pin
- microperforation
- hot needle perforation
- Hairpin
- Push pin
- Cotter pin
- Clevis pin
- Safety pin
- Pin (professional wrestling)
References
- Henry Petroski, The Evolution of Useful Things, Chapter 4. ISBN 0-679-74039-2.
