The history of zipper factory to invent the first zipper is interesting

　　In the world, there will be a lot of things that we only know how to use it, but we do not pay attention to the history of their development, for example, the usage of sab zipper. As we all know that it is easy to use, however, wo have no idea about its progress of invention. Now, I will show you something about the long history of sab zipper.

　　On the eve of 1893 Chicago Expo that is the 400th anniversary of Columbus' discovery of America, a Americans proposed to hold a World Expo to commenmorate this great historical event. In this session of the Expo, a American man named Wei Tekang bull; Judson demonstrated his new invention “removable clasp”, which is the original name of the zipper, but because of heavy sab zipper,hook and loop lap loose, easy automatic cracked and no gain market favor.

　　But the unprepossessing invention did not silence, in which nearly a century after the birth of time, the world’s different countries zipper factory is constantly improving the sab zipper technology. In 1986, the American famous “World of Science” magazine selected 10 invention that have the greatest impact on human life in 20th century, including integrated circuits, aircraft, nylon, rockets, airships, television, refrigerators and other well-known scientific and technological achievements, but the top of the list is a small thing——zipper!

　　One day in 1890, the zipper factory engineer Wei Tekang•Judson with gifts to visit cousin, when he got off the train, he saw an old lady slipped and fell, the carry bag is distraction, something in the bag scattered over the ground, Judson quickly put aside his own bag, to help the elderly, so he can get his bag back, he found the gift gone that for his cousin, he didn't know when the gift fall from the bag. It makes Judson determined that he must be able to design a device that can closed tight, easy to open and close.

　　Once Judson found the scoop hanging nearly, cleverly when he go a blacksmith's shop to buy scoop, he saw: a horizontal stick hanging two rows of spoon, the upper row spoon handle with a sitck directly through the hole, the lower row spoon handle down by the ministry with the above spoon bite tightly together. The two rows of spoons that it snaps together, became Judson envisaged “zipper” prototype.

　　The history of zipper factory to invent the first sab zipper is very interesting, stop here, are you familiar with the development of sab zipper?