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The origin of the spring

- Mar 28, 2018 -

The origin of the spring

Most materials have different degrees of elasticity. If they are bent, they will restore their original shape with great strength. In human history, it must have been very early to notice that the branches of saplings and saplings are very flexible, because many primitive cultures use this characteristic, wedge behind a special door or behind a cage, or use a slip knot. The sleeve pulls down on a rod; once the tension is released, the stick or rod springs back. They used this method to capture birds and beasts. In fact, the bow is a spring that uses the elasticity of the saplings in this way; first pull the bow backwards, then let it fall and let it rebound. In the Middle Ages, this idea began to appear on machinery, such as textile machines, lathes, rigs, grinders and saws. The operator gives a depressing stroke by hand or foot pedal and pulls down the working machine. At this time, a rod fixed to the machine by a rope springs back and generates a reciprocating motion.

The torsion resistance of the elastic material does not oppose its flexibility. During the Greek Empire (presumably in the 4th century BC) invented a torsion spring that was tightened with a bridle or rope to replace the simple spring to strengthen the power of the stone sculpting and stumbling machines. At this time people began to realize that metal is more elastic than wood, keratin, or any of these organic substances. Philo (who wrote about 200 BC) introduced it as a new discovery. He estimates that the reader is incredible. The elasticity of the Celtic and Spaniard swords attracted the attention of his predecessors in Alexander City. In order to understand why the sword is flexible, they conducted many experiments. As a result, his teacher Krzysibi invented the trebuchet. The spring of the trebuchet was made of a bent bronze plate - actually the earliest leaf spring; Philo himself further improved these trebuchets. After inventing this type of stone thrower, the creative Krishsi once again came up with another type of stone throwing machine—it uses the elasticity of the air inside the cylinder under pressure.

It was only a long time later that people thought: If you compress a screw instead of bending a straight rod, then the metal spring will store more energy. According to the Bruhneneski's biography, he made an alarm clock that used several generations of springs. It has recently been pointed out that this alarm clock is shown in a mechanical handbook at the end of the 15th century with some strange spiral spring clocks and charts. This type of spring is also used in modern mousetraps. A clock with a coiled spring (a horizontal compression instead of a vertical compression spring) must have been used around 1460, but it is basically a luxury for the royal family. After about a century, the spring-loaded timepiece became a middleman. Class logo

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