
A clothes iron (also flatiron, smoothing iron, dry iron, steam iron or simply iron) is a
small appliance
A small domestic appliance, also known as a small electric appliance or minor appliance or simply a small appliance, small domestic or small electric, is a portable or semi-portable machine, generally used on table-tops, counter-tops or oth ...
that, when heated, is used to press
clothes
Clothing (also known as clothes, garments, dress, apparel, or attire) is any item worn on a human human body, body. Typically, clothing is made of fabrics or textiles, but over time it has included garments made from animal skin and other thin s ...
to remove
wrinkles and unwanted creases. Domestic irons generally range in operating temperature from to . It is named for the metal (
iron
Iron is a chemical element; it has symbol Fe () and atomic number 26. It is a metal that belongs to the first transition series and group 8 of the periodic table. It is, by mass, the most common element on Earth, forming much of Earth's o ...
) of which the device was historically made, and the use of it is generally called
ironing, the final step in the process of
laundering clothes.
Ironing works by loosening the ties between the long chains of molecules that exist in
polymer
A polymer () is a chemical substance, substance or material that consists of very large molecules, or macromolecules, that are constituted by many repeat unit, repeating subunits derived from one or more species of monomers. Due to their br ...
fiber materials. With the heat and the weight of the ironing plate, the fibers are stretched and the fabric maintains its new shape when cool. Some materials, such as cotton, require the use of water to loosen the intermolecular bonds.
History and development

Before the introduction of electricity, irons were heated by combustion, either in a fire or with some internal arrangement. The said iron was made as a solid piece of iron with a handle and was heated, for example, on a wood stove and used to smooth clothes. It can also be called a smoothing iron. An "electric flatiron" was invented by American Henry W. Seely and patented on June 6, 1882. It weighed almost and took a long time to heat. The UK
Electricity Association is reported to have said that an electric iron with a carbon arc appeared in France in 1880, but this is considered doubtful.
Two of the oldest sorts of iron were either containers filled with a burning substance, or solid lumps of metal which could be heated directly.
Metal pans filled with hot coals were used for smoothing fabrics in China in the 1st century BC.
A later design consisted of an iron box which could be filled with hot coals, which had to be periodically aerated by attaching a bellows. In the late nineteenth and early twentieth centuries, there were many irons in use that were heated by fuels such as
kerosene
Kerosene, or paraffin, is a combustibility, combustible hydrocarbon liquid which is derived from petroleum. It is widely used as a fuel in Aviation fuel, aviation as well as households. Its name derives from the Greek (''kērós'') meaning " ...
,
ethanol
Ethanol (also called ethyl alcohol, grain alcohol, drinking alcohol, or simply alcohol) is an organic compound with the chemical formula . It is an Alcohol (chemistry), alcohol, with its formula also written as , or EtOH, where Et is the ps ...
,
whale oil
Whale oil is oil obtained from the blubber of whales. Oil from the bowhead whale was sometimes known as train-oil, which comes from the Dutch word ''traan'' ("tear drop").
Sperm oil, a special kind of oil used in the cavities of sperm whales, ...
,
natural gas
Natural gas (also fossil gas, methane gas, and gas) is a naturally occurring compound of gaseous hydrocarbons, primarily methane (95%), small amounts of higher alkanes, and traces of carbon dioxide and nitrogen, hydrogen sulfide and helium ...
, carbide gas (
acetylene
Acetylene (Chemical nomenclature, systematic name: ethyne) is a chemical compound with the formula and structure . It is a hydrocarbon and the simplest alkyne. This colorless gas is widely used as a fuel and a chemical building block. It is u ...
, as with
carbide lamps), or even
gasoline
Gasoline ( North American English) or petrol ( Commonwealth English) is a petrochemical product characterized as a transparent, yellowish, and flammable liquid normally used as a fuel for spark-ignited internal combustion engines. When for ...
. Some houses were equipped with a system of pipes for distributing natural gas or carbide gas to different rooms in order to operate appliances such as irons, in addition to lights. Despite the risk of fire, liquid-fuel irons were sold in U.S. rural areas up through World War II. In Kerala, India, burning coconut shells were traditionally used as an alternative to charcoal due to their comparable heating capacity. This method is still employed as a backup option, particularly during frequent power outages. Other box irons had heated metal inserts instead of hot coals.
From the 17th century, ''sadirons'' or ''sad irons'' (from Middle English "sad", meaning "solid", used in English through the 1800s) began to be used. They were thick slabs of
cast iron
Cast iron is a class of iron–carbon alloys with a carbon content of more than 2% and silicon content around 1–3%. Its usefulness derives from its relatively low melting temperature. The alloying elements determine the form in which its car ...
, triangular and with a handle, heated in a fire or on a stove. These were also called flat irons. A laundry worker would employ a cluster of solid irons that were heated from a single source: As the iron currently in use cooled down, it could be quickly replaced by a hot one.
In the industrialized world, these designs have been superseded by the electric iron, which uses
resistive heating from an
electric current
An electric current is a flow of charged particles, such as electrons or ions, moving through an electrical conductor or space. It is defined as the net rate of flow of electric charge through a surface. The moving particles are called charge c ...
. The hot plate, called the ''sole plate'', is made of
aluminium
Aluminium (or aluminum in North American English) is a chemical element; it has chemical symbol, symbol Al and atomic number 13. It has a density lower than that of other common metals, about one-third that of steel. Aluminium has ...
or
stainless steel
Stainless steel, also known as inox, corrosion-resistant steel (CRES), or rustless steel, is an iron-based alloy that contains chromium, making it resistant to rust and corrosion. Stainless steel's resistance to corrosion comes from its chromi ...
polished to be as smooth as possible; it is sometimes coated with a low-friction heat-resistant plastic to reduce friction below that of the metal plate. The heating element is controlled by a
thermostat
A thermostat is a regulating device component which senses the temperature of a physical system and performs actions so that the system's temperature is maintained near a desired setpoint.
Thermostats are used in any device or system tha ...
that switches the current on and off to maintain the selected temperature. The invention of the resistively heated electric iron is credited to Henry W. Seeley of New York City in 1882. In the same year an iron heated by a carbon arc was introduced in France, but was too dangerous to be successful. The early electric irons had no easy way to control their temperature, and the first thermostatically controlled electric iron appeared in the 1920s. The first commercially available electric steam iron was introduced in 1926 by a New York drying and cleaning company, Eldec, but was not a commercial success. The patent for an electric steam iron and dampener was issued to Max Skolnik of Chicago in 1934. In 1938, Skolnik granted the Steam-O-Matic Corporation of New York the exclusive right to manufacture steam-electric irons. This was the first steam iron to achieve any degree of popularity, and led the way to more widespread use of the electric steam iron during the 1940s and 1950s.
Types and names

Historically, irons have had several variations and have thus been called by many names:
* Flatiron (
American English
American English, sometimes called United States English or U.S. English, is the set of variety (linguistics), varieties of the English language native to the United States. English is the Languages of the United States, most widely spoken lang ...
), flat iron (
British English
British English is the set of Variety (linguistics), varieties of the English language native to the United Kingdom, especially Great Britain. More narrowly, it can refer specifically to the English language in England, or, more broadly, to ...
) or smoothing iron
: The general name for a hand-held iron consisting simply of a handle and a solid, flat, metal base, and named for the flat ironing face used to smooth clothes.
* Sad iron or sadiron
: Mentioned above, meaning "solid" or heavy iron, where the base is a solid block of metal, sometimes used to refer to irons with heavier bases than a typical "flatiron".
* Box iron, ironing box, charcoal iron, ox-tongue iron or slug iron
: Mentioned above; the base is a container, into which hot coals or a metal brick or slug can be inserted to keep the iron heated. The ox-tongue iron is named for the particular shape of the insert, referred to as an ox-tongue slug.
* Goose, tailor's goose or, in Scots, gusing iron
: A type of flat iron or sad iron named for the goose-like curve in its neck, and (in the case of "tailor's goose") its usage by tailors.
* Goffering iron
: This type of iron, now obsolete, consists of a
metal cylinder oriented horizontally on a stand. It was used to iron
ruffs and collars.
Hygiene
Proper ironing of clothes has proven to be an effective method to avoid infections like those caused by
lice.
Features

Modern irons for home use can have the following features:
* A design that allows the iron to be set down, usually standing on its end, without the hot soleplate touching anything that could be damaged;
* A
thermostat
A thermostat is a regulating device component which senses the temperature of a physical system and performs actions so that the system's temperature is maintained near a desired setpoint.
Thermostats are used in any device or system tha ...
ensuring maintenance of a constant temperature;
* A temperature control dial allowing the user to select the operating temperatures (usually marked with types of cloth rather than temperatures: "
silk
Silk is a natural fiber, natural protein fiber, some forms of which can be weaving, woven into textiles. The protein fiber of silk is composed mainly of fibroin and is most commonly produced by certain insect larvae to form cocoon (silk), c ...
", "
wool
Wool is the textile fiber obtained from sheep and other mammals, especially goats, rabbits, and camelids. The term may also refer to inorganic materials, such as mineral wool and glass wool, that have some properties similar to animal w ...
", "
cotton
Cotton (), first recorded in ancient India, is a soft, fluffy staple fiber that grows in a boll, or protective case, around the seeds of the cotton plants of the genus '' Gossypium'' in the mallow family Malvaceae. The fiber is almost pure ...
", "
linen
Linen () is a textile made from the fibers of the flax plant.
Linen is very strong and absorbent, and it dries faster than cotton. Because of these properties, linen is comfortable to wear in hot weather and is valued for use in garments. Lin ...
", etc.);
* An electrical cord with heat-resistant
silicone rubber insulation;
* Injection of
steam
Steam is water vapor, often mixed with air or an aerosol of liquid water droplets. This may occur due to evaporation or due to boiling, where heat is applied until water reaches the enthalpy of vaporization. Saturated or superheated steam is inv ...
through the fabric during the ironing process;
** A water reservoir inside the iron used for steam generation;
** An indicator showing the amount of water left in the reservoir,
** Constant steam: constantly sends steam through the hot part of the iron into the clothes;
** Steam burst: sends a burst of steam through the clothes when the user presses a button;
** (advanced feature) Dial controlling the amount of steam to emit as a constant stream;
** (advanced feature) Anti-drip system;
* Cord control: the point at which the cord attaches to the iron has a spring to hold the cord out of the way while ironing and likewise when setting down the iron (prevents fires, is more convenient, etc.);
* A retractable cord for easy storage;
* (advanced feature) non-stick coating along the sole plate to help the iron glide across the fabric
* (advanced feature) Anti-burn control: if the iron is left flat (possibly touching clothes) for too long, the iron shuts off to prevent scorching and fires;
* (advanced feature) Energy saving control: if the iron is left undisturbed for several (10 or 15) minutes, the iron shuts off.
* Cordless irons: the iron is placed on a stand for a short period to warm up, using
thermal mass to stay hot for a short period. These are useful for light loads only.
Battery power is not viable for irons as they require more power than practical batteries can provide.
* (advanced feature) 3-way automatic shut-off
* (advanced feature) self-cleaning
*(advanced feature) Anti-scale to help remove lime scale buildup from using hard water for a long time.
* (advanced feature) vertical steam to help remove creases and wrinkles by holding an iron vertically and steaming material close to it.
Collections
One of the world's larger collection of irons, comprising 1300 historical examples of irons from Germany and the rest of the world, is housed in
Gochsheim Castle, near
Karlsruhe
Karlsruhe ( ; ; ; South Franconian German, South Franconian: ''Kallsruh'') is the List of cities in Baden-Württemberg by population, third-largest city of the States of Germany, German state of Baden-Württemberg, after its capital Stuttgart a ...
,
Germany
Germany, officially the Federal Republic of Germany, is a country in Central Europe. It lies between the Baltic Sea and the North Sea to the north and the Alps to the south. Its sixteen States of Germany, constituent states have a total popu ...
.
Many ethnographical museums around the world have collections of irons. In
Ukraine
Ukraine is a country in Eastern Europe. It is the List of European countries by area, second-largest country in Europe after Russia, which Russia–Ukraine border, borders it to the east and northeast. Ukraine also borders Belarus to the nor ...
, for example, about 150 irons are the part of the exhibition of the
Radomysl Castle in Ukraine.
[Богомолець. О. "Замок-музей Радомисль на Шляху Королів Via Regia". — Київ, 2013]
Ironing center
An ironing center,
steam ironing station, or steam generator iron is a device consisting of a clothes iron and a separate steam-generating tank. By having a separate tank, the ironing unit can generate more steam than a conventional iron, making steam ironing faster. Such ironing facilities take longer to warm up than conventional irons, and cost more.
See also

*
Dadeumi, a mechanical way to smooth clothing, once traditional in Korea
*
Flatiron Building, of cross-section like a flatiron
*
Flatiron gunboat, flatiron-shaped in plan view
*
Hair iron
*
Home robot
*
Mangle (machine)
*
Soldering iron
*
Trouser press
*
Mary Florence Potts, inventor of the detachable cold wooden handle for irons
References
External links
Charcoal and other antique ironsfrom the White River Valley Museum
Antique Ironsfrom the Virtual Museum of Textile Arts
{{DEFAULTSORT:Iron (Appliance)
1882 introductions
Home appliances
Laundry equipment
19th-century inventions
Ancient inventions
British inventions
Textile tools