An iron makes clothes smooth. 

An iron makes clothes smooth. 
Long ago, people used different tools. They used metal pieces heated in a fire. Some irons were boxes filled with hot coals. 
Today, most irons use electricity. A hot plate on the bottom does the work. The plate can be made of smooth metal. It glides over the cloth.
Some irons use water too. They make steam to help the cloth. This makes it easier to fix creases. It works well on cotton.
Ironing is a very useful job. It can even help keep clothes clean. It makes everything look great! 
An iron is a tool used to smooth clothes. It removes wrinkles and creases. 

Long ago, people used many ways to heat irons. Some were solid metal pieces heated on a stove. Others were metal boxes filled with hot coals.
Today, most people use electric irons. These use a hot plate called a sole plate. This plate is made of smooth metal like stainless steel. A thermostat helps the iron stay at the right heat. 
An iron is a small tool used to smooth clothes. 

Ironing works through a very interesting way it works with molecules. Fabrics are made of long chains of molecules called polymer fibers. These chains have ties between them that hold wrinkles in place. When you use an iron, the heat and weight do something special. The heat and weight of the plate loosen those ties. The fibers stretch out under the pressure of the iron. The fabric then keeps its new, smooth shape once it cools down.
People have used many different kinds of irons throughout history. In China, people used metal pans filled with hot coals in the 1st century BC. In Kerala, India, people used burning coconut shells to heat things. Some people used solid metal slabs called sadirons to smooth clothes. These were thick pieces of cast iron with a handle. They were heated directly on a fire or a stove. 
Modern electric irons changed how we handle laundry. Henry W. Seely of New York City invented the electric flatiron. He received a patent for his invention on June 6, 1882. His early iron weighed almost two pounds and took a long time to heat up. The first electric steam iron arrived in 1926 from a company called Eldec. Later, Max Skolnik of Chicago patented a steam iron in 1934. His Steam-O-Matic brand became very popular during the 1940s and 1950s.
Today, most irons have many helpful features to make work easier. They have a hot metal part called a sole plate. This plate is usually made of smooth aluminum or stainless steel. A thermostat helps the iron stay at the right temperature. Many irons also have a water reservoir to make steam. This steam can come out in a constant stream or a quick burst. 
A clothes iron is a small household appliance used to smooth fabrics. 

To understand how an iron works, we must look at the science of molecules. Fabrics are often made of polymer fiber materials. These materials consist of very long chains of molecules. In a wrinkled cloth, there are ties, or intermolecular bonds, between these chains. When you press a hot iron against the fabric, the heat helps loosen these bonds. The weight of the iron's plate then stretches the fibers into a flat position. Once the fabric cools down, it maintains this new, smooth shape.
Before electricity was common, people used many different methods to heat their irons. In China, during the 1st century BC, people used metal pans filled with hot coals. Later, a design emerged using an iron box filled with burning substances. These boxes required periodic aeration using a bellows to keep the coals burning. In Kerala, India, people traditionally used burning coconut shells as a heat source. This method is still used as a backup today during frequent power outages. 
Many different types of irons have existed throughout history. A box iron, also called a charcoal iron, is a container for hot coals. Some of these used an "ox-tongue slug," which was a specific shape of metal insert. There were also "goose" irons, named for the curve in their necks. Tailors often used a specific version called a tailor's goose. Another obsolete type was the goffering iron. This device used a horizontal metal cylinder on a stand to iron ruffs and collars.
The transition to electric power changed everything for laundry. Henry W. Seely of New York City invented the electric flatiron. He received a patent for his device on June 6, 1882. His early model weighed almost two pounds and required a long time to heat up. While some reports suggest a carbon arc iron appeared in France in 1880, this is considered doubtful. The first thermostatically controlled electric iron did not appear until the 1920s.
Modern electric irons are much more sophisticated and safe. The heated part of the iron is called the sole plate. It is usually made of polished aluminum or stainless steel. Some plates have a low-friction, heat-resistant plastic coating to help them glide. A thermostat controls the heating element by switching the electric current on and off. 
Advanced features have made ironing faster and safer for everyone. Many irons include an anti-burn control that shuts the device off if left flat. Some also have energy-saving controls that turn the iron off after 10 or 15 minutes of inactivity. You can even find cordless irons that use thermal mass to stay hot for a short time. For very large jobs, people use an ironing center. This consists of an iron connected to a separate, large steam-generating tank. This setup generates more steam than a standard iron, making the process much faster.
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