Paper clips use the springiness of bent metal wire to grip sheets. Many patented shapes appeared over time, and the familiar double-loop form does not represent every early design.
They hold sheets together temporarily without making holes. Popular claims about a sole inventor often overlook designs and products that already existed.
The evolution of wire clips
According to the Early Office Museum, the first patent for a bent wire paper clip was awarded in the United States to Samuel B. Fay in 1867. This clip was originally intended primarily for attaching tickets to fabric, although the patent recognized that it could be used to attach papers together. Fay received U.S. patent 64,088 on 23 April 1867. Although functional and practical, Fay's design along with the 50 other designs patented prior to 1899 are not considered reminiscent of the modern paperclip design known today. Another notable paper clip design was also patented in the United States by Erlman J. Wright on 24 July 1877, patent #193,389. This clip was advertised at that time for use in fastening together loose leaves of papers, documents, periodicals, newspapers etc.
The most common type of wire paper clip still in use, the Gem paper clip, was never patented, but it was most likely in production in Britain in the early 1870s by "The Gem Manufacturing Company", according to the American expert on technological innovations, Professor Henry J. Petroski. He refers to an 1883 article about "Gem Paper-Fasteners", praising them for being "better than ordinary pins" for "binding together papers on the same subject, a bundle of letters, or pages of a manuscript". Since the 1883 article had no illustration of this early "Gem", it may have been different from modern paper clips of that name.
The earliest illustration of its current form is in an 1893 advertisement for the "Gem Paper Clip". In 1904 Cushman & Denison registered a trademark for the "Gem" name in connection with paper clips. The announcement stated that it had been used since 1 March 1892, which may have been the time of its introduction in the United States. Paper clips are still sometimes called "Gem clips", and in Swedish the word for any paper clip is "gem" (but pronounced similar to English game).
But the original Gem type has for more than a hundred years proved to be the most practical, and consequently by far the most popular. Its qualities – ease of use, gripping without tearing, and storing without tangling – have been difficult to improve upon. In the United States, National Paperclip Day is celebrated on 29 May.
Norwegian claim
Norwegian Johan Vaaler (1866–1910) has been identified as the inventor of the paper clip. He was granted patents in Germany and in the United States (1901) for a paper clip of similar design, but less functional and practical. Because it was more complicated to insert into the paper, Vaaler probably did not know that a better product was already on the market, although not yet in Norway. His version was never manufactured and never marketed because the superior Gem was already available.
Long after Vaaler's death, his countrymen created a national myth based on the false assumption that the paper clip was invented by an unrecognized Norwegian genius. Norwegian dictionaries since the 1950s have mentioned Vaaler as the inventor of the paper clip, and that myth later found its way into international dictionaries and much of the international literature on paper clips.
Vaaler probably succeeded in having his design patented abroad, despite the previous existence of more useful paper clips, because patent authorities at that time were quite liberal and rewarded any marginal modification of existing inventions. Johan Vaaler began working for Alfred J. Bryns Patentkontor in Kristiania in 1892 and was later promoted to office manager, a position he held until his death. As the employee of a patent office, he could easily have obtained a patent in Norway. His reasons for applying abroad are not known; it is possible that he wanted to secure the commercial rights internationally. Also, he may have been aware that a Norwegian manufacturer would find it difficult to introduce a new invention abroad, starting from the small home market.