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拉链是人们所熟知的日常生活用品,既实用又方便。拉链是谁发明的?这里有一段有趣的故事:1893年,美国芝加哥一位精力充沛的发明家威特库姆·贾德森接受一项专利权,搞一项他自称为“用一次连续性滑动使一连串钩子自动咬合和分离”的设计。这项设计包括两根链条,每根上装有交错的链环和钩子。当滑动部件在链条上滑动时,链条上的钩子和另一链条上的链环就咬合在一起了。当时,贾德森发明的拉链不象目前人们所使用的装在线带上的拉链那样,而是立接装在男女穿的鞋子上。遗憾的是,拉链拉起来既笨拙又不平滑,顾客
Zipper is a well-known daily necessities, both practical and convenient. Who invented the zipper? Here’s an interesting story: In 1893, an energetic inventor in Chicago, United States, Wittjudson, accepted a patent that he claimed he would “use a continuous slide A series of hooks automatically bite and separate ”design. The design consists of two chains, each with staggered links and hooks. When the sliding member slides on the chain, the hooks on the chain mesh with the links on the other chain. At that time, Judson invented the zipper unlike people now use the zipper on the belt, as it is, but mounted on men’s and women’s shoes. Unfortunately, the zipper pulls up clumsily and not smoothly, the customer