The first patent on a type of zip was registered by the American sewing machine constructor Elias Howe in 1851. In 1893, Whitcomb Judson presented an enhanced version of the concept at a world exhibition in Chicago.
With the first zips, the hooks were sewn into the material one at a time – a very slow process. In 1913, the Swedish-American Gideon Sundbäck then patented his advanced model where the teeth were fastened to two pieces of material, which could be sewn onto clothes.
Only in about 1930 did it become normal to use a zip instead of buttons.