The history of blue jeans can be traced to two men— Levi Strauss (1829-1902), a German who emigrated to the United States as a young boy, and the lesser known Latvian Jacob Davis (1834-1908), who moved to the United States in 1854.
In 1853 Levi Strauss moved to San Francisco where he set up a company, Levi Strauss & Co., selling buttons, scissors, bolts of cloth, and canvas. He also designed heavy-duty canvas work overalls for local miners. When his canvas supplies ran out, he began using heavyweight cotton twill, later known as denim. One of Strauss' customers was a tailor, Jacob Davis, who also made work trousers. His clients were complaining that the pockets kept ripping out, so Davis devised a method of strengthening the pocket corners and fly fastenings with metal rivets. This was an immediate success, but Davis did not have the money to obtain the patent, so he approached Strauss. An astute businessman, Strauss paid for the paperwork and the two men filed a joint patent for the new rivet-strengthened work trousers on May 20, 1873.
Davis went to work for Levi Strauss & Co., overseeing production of the new work trousers, which were not called jeans until the 1960s. They quickly became popular and their fame as the best work trousers spread throughout the United States. In around 1890 the patent ran out, allowing any company to manufacture riveted jeans. At the same time Levi Strauss & Co. assigned their jeans the number 501. The term Levi's, however, was not coined by the company but by the public, and the company trademarked the name.
