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:
“Apart from their other characteristics, the outstanding thing about China’s 600 million people is that they are “poor and blank.” This may seem a bad thing, but in reality it is a good thing. Poverty gives rise to the desire for change, the desire for action and the desire for revolution. On a blank sheet of paper free from any mark, the freshest and most beautiful pictures can be painted.”
—Mao Zedong (1893–1976)
“O! let me clip ye
In arms as sound as when I wooed, in heart
As merry as when our nuptial day was done
And tapers burnt to bedward!”
—William Shakespeare (1564–1616)