A paper clip (or sometimes paperclip) is an instrument used to hold sheets of paper together, usually made of steel wire bent to a looped shape. Most paper clips are variations of the Gem type introduced in the 1890s or earlier, characterized by the almost two full loops made by the wire. Common to paper clips proper is their utilization of torsion and elasticity in the wire, and friction between wire and paper. When a moderate number of sheets are inserted between the two "tongues" of the clip, the tongues will be forced apart and cause torsion in the bend of the wire to grip the sheets together. Too many sheets will cause the elastic limit of the material to be exceeded, resulting in permanent deformation.
Read more about Paper Clip: Shape and Composition, History, Norwegian Claim, Paper Clips Project, Other Uses, Other Fastening Devices
Famous quotes containing the words paper and/or clip:
“There’s a long story, my friend. I never did like the idea of sitting on newspapers. I did it once and all the headlines came off on my white pants. On the level, it actually happened. Nobody bought a paper that day. They just followed me around over town and read the news off the seat of my pants.”
—Robert Riskin (1897–1955)
“She shall be buried by her Antony;
No grave upon the earth shall clip in it
A pair so famous.”
—William Shakespeare (1564–1616)