When did office stationery paper clips begin to appear?

According to the Early Office Museum, the first patent for a curved wire paper clip was awarded to Samuel B. Fay, 1867 in the United States. This clip was originally used primarily for fabric add-on tickets, although patents are approved, it can be used to connect together. Faye received US patent 64088 on April 23, 1867. Although functionally functional, Fay's design and other 50 design patents were not considered to be modern designs reminiscent of today's known paper clips. Another notable paper clip design is also patented in the United States by Erlman J. Wright in 1877. This clip is the newspaper that was used for fastening at the time of the advertisement.

Middlebrook 1899 patented paper clip machine shows that GEM is already in common use (top and bottom)

The most common type of wire is still in use with paper clips, gem paper clips, and never patented, but it is most likely to be produced in the UK in the early 1870s as a "GEM manufacturing company", according to American technology innovation expert Professor Henry Petroski J. He refers to 1883 articles on "GEM paper clips", praising them as "papers, bundles of letters, or pages of manuscripts that are combined in the same subject than ordinary needles." [4] Since 1883 does not explain this The early "gems", which may be different from the modern name of the clip. The earliest document of its existence is a 1894 advertisement for the "Gemstone Paper Clip". 1904 Cushman & Denison registered trademark "Gem" name is connected with a paper clip The statement said that it has been used since March 1, 1892, which may be the time it was launched in the US. [5] Paper clips are still sometimes referred to as "jewel cards" and any paper in Swedish The word for the clip is "gems."

Clearly proof that the modern type of paper clip is well known in the 1899, the patent is granted to Middelbrook to belong to Waterbury, Connecticut on April 27th of this year a "Machine Paper Clip." The figure clearly shows the product It is a perfect type of entrepreneurial. In fact, the name of the report was not mentioned, indicating that it was widely known at the time. Since then, numerous changes to the same subject have been patented. Some pointed out that instead of the rounded ends, a circle is slightly curved, making it easier to insert into the paper end, with wavy or hooked lines for better grip. In addition, pure aesthetic variations have been patented, triangular or round clips. But the original gem type has been more than a hundred years and proved to be the most practical and therefore the most popular so far. Its quality, ease of use, and no tearing, entanglement and storage have been difficult to improve.