When was the washing machine invented? Detailed answer

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When was the washing machine invented? Detailed answer

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When was the washing machine invented?

Washing machines are known to everyone, but for many they are still a luxury item. Before there were washing machines, laundry at home was washed in a wooden or galvanized tub. It was rubbed on a corrugated washboard. The clothes were then wrung out and hung on a line to dry. One of the first washing machines was built by Hamilton Smith of Pittsburgh, Pennsylvania in 1858. This machine was controlled by a crank that rotated the blades located inside the tub.

There was another washing machine that simulated washing on a washboard. But all these machines were not successful. Linen often became tangled, knotted or torn. In 1907, a washing machine with a motor was invented. By 1912, almost all household washing machines were powered by electricity.

The tanks of the first washing machines were made of wood. Then they began to be made of metal: copper, galvanized steel, aluminum and zinc. By 1961, virtually all tubs were coated with porcelain enamel, as these machines could withstand strong detergents and any water temperature.

The stirrer was invented in 1922. Most of them were a cone with several fins at the lower end. The stirrer stirred the laundry from top to bottom and from side to side. The fully automated washing machine appeared in 1937. Most washing machines wash 3-4 kilograms of laundry. They consume about 150 liters of water per wash, and the water temperature is maintained at 55-70 degrees. The first working dryer was made in 1930. The combination washing machine with spin was first introduced to the market in 1953.

Author: Likum A.

Random interesting fact from the Great Encyclopedia:

When were rockets first used?

Have you ever watched a sprinkler - a lawn watering device that rotates, spraying water in a circle? Great, so you have seen the rocket principle in practice.

The water in the sprinkler rushes out with force in one direction, and this force pushes it in the opposite direction. In a rocket, the fast-burning propellant or explosive exerts pressure in one direction, and this causes the rocket to move in the opposite direction.

We live in the age of rockets, and it seems to us that they were invented by our contemporaries. In fact, the reactive principle has been known for a very long time. The Chinese used rockets for fireworks over 800 years ago! Then they became known in India and Arab countries. The first mention of rockets in Western Europe dates back to 1256.

As for the military use of rockets, at first they seemed to replace burning arrows: they were aimed at houses in order to set them on fire. Then the military and sailors began to use rockets for signaling, but for a long time it did not reach their real use in the war.

In 1802, a captain in the British army read how British troops in India had been attacked by rockets. This led him to the idea of testing them in the royal army. The experiment turned out to be so successful that very soon most of the armies of European countries, as well as the United States, began to use combat missiles.

In Europe, rockets were used in the Battle of Leipzig, in which Napoleon was defeated. In the United States, the British used live rockets to bombard Fort McHenry in the port of Baltimore. That's why the national anthem of the United States has words about the crimson glow of a rocket.

However, during the 2th century, artillery became more powerful and accurate weapons and began to replace rockets. As a result, they again lost their military significance. And this situation persisted until the Second World War and the appearance of the famous German rocket V-XNUMX.

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