William Middlebrook, an engineer in Fort Worth, Connecticut, solved the problem of machine building. He invented a machine for bending wire paper clips in 1899. Middlebrook may also provide solutions to other problems. Because the paper clip made by his machine has double loops, which is very similar to the paper clip we use. These paper clips are famous "Gem" brand paper clips. They usually don't damage paper. Paper clips are made of plastic coated with different colors. This not only makes paper clips more attractive, but also allows users to "code" pages with paper clips of different colors. It seems that no one mentioned the patent of "Gemstone" brand paper clip, so it is impossible to determine who is its inventor. But since it was adopted at the beginning of this century, it has become a standard design.
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When you look at things from different angles, you will feel different. If you change your way of thinking, you will find that the same thing is placed in a different position, and it will show different things. Because people's thinking is different, people have different views on the same thing or the same thing. Expand your imagination and you will find that a small paper clip can have many different uses.