Ice skate
Encyclopedia
Ice skates are boots with blades attached to the bottom, used to propel the bearer across a sheet of ice
Ice
Ice is water frozen into the solid state. Usually ice is the phase known as ice Ih, which is the most abundant of the varying solid phases on the Earth's surface. It can appear transparent or opaque bluish-white color, depending on the presence of impurities or air inclusions...

. They are worn as footwear in many sports, including ice hockey
Ice hockey
Ice hockey, often referred to as hockey, is a team sport played on ice, in which skaters use wooden or composite sticks to shoot a hard rubber puck into their opponent's net. The game is played between two teams of six players each. Five members of each team skate up and down the ice trying to take...

, bandy
Bandy
Bandy is a team winter sport played on ice, in which skaters use sticks to direct a ball into the opposing team's goal.The rules of the game have many similarities to those of association football: the game is played on a rectangle of ice the same size as a football field. Each team has 11 players,...

 and figure skating
Figure skating
Figure skating is an Olympic sport in which individuals, pairs, or groups perform spins, jumps, footwork and other intricate and challenging moves on ice skates. Figure skaters compete at various levels from beginner up to the Olympic level , and at local, national, and international competitions...

. The first ice skates were made from leg bones of horse, ox or deer, and were attached to feet with leather straps. A pole with a sharp metal spike was used for pushing the skater forward.

History

According to a study done by Federico Formenti, University of Oxford
University of Oxford
The University of Oxford is a university located in Oxford, United Kingdom. It is the second-oldest surviving university in the world and the oldest in the English-speaking world. Although its exact date of foundation is unclear, there is evidence of teaching as far back as 1096...

, and Alberto Minetti, University of Milan
University of Milan
The University of Milan is a higher education institution in Milan, Italy. It is one of the largest universities in Europe, with about 62,801 students, a teaching and research staff of 2,455 and a non-teaching staff of 2,200....

, Finns were the first to develop ice skates some 5,000 years ago from animal bones. This was important for the Finnish populations to save energy in harsh winter conditions when hunting in Finnish Lakeland
Finnish Lakeland
Finnish Lakeland or Finnish lake district is the largest of the four landscape regions into which the geography of Finland is divided.The hilly, forest-covered landscape of the lake plateau is dominated by drumlins and by long sinuous eskers...

. The first skate to use a metal blade was found in Scandinavia and was dated to 200 and was fitted with a thin strip of copper folded and attached to the underside of a leather shoe.

William Fitzstephen
William Fitzstephen
William Fitzstephen , died c. 1191, was a cleric and administrator in the service of Thomas Becket, becoming a Subdeacon in his chapel, with responsibility for perusing letters and petitions. He witnessed Becket's murder, and wrote his biography - the Vita Sancti Thomae William Fitzstephen (also...

, writing in the 12th century, described the use of bone skates in London:
.... when the great fenne or moore (which watereth the walles of the citie on the North side) is frozen, many young men play upon the yce, some striding as wide as they may, doe slide swiftly... some tye bones to their feete, and under their heeles, and shoving themselves by a little picked staffe, doe slide as swiftly as birde flyeth in the aire, or an arrow out of a crossbow.

Design

The bottom of a modern ice skate blade, unlike the blade of a knife, has a crescent-shaped hollow, creating two sharp edges on each skate. Ideally, the two edges of a blade are parallel, but poor maintenance practices, such as improper sharpening or lack of consistent sharpening, can often result in oblique edges. These "bad" edges can affect skating ability significantly. The depth of this hollow is known as the Radius of Hollow (RoH). The Radius of Hollow is typically between 1/4" and 1" depending on the type of skates and the user. The optimal depth depends on factors such as the skater's weight, ability, strength, sporting activity, and (for ice hockey) style of play. The skater uses these edges in different combinations in order to maneuver. When ice skates are sharpened the blade is ground with a stone with a curved surface, dressed to either restore the hollow or provide a different radius.

Speed skates and touring skates, however, have a completely flat bottom. There is no hollow, only a squared off bottom with 2 edges. This improves glide time, by not cutting into the ice.

Inexpensive skates for recreational skaters usually resemble either figure skates or hockey skates, but recreational ice skates resembling inline skates
Inline skates
In-line skates are a type of roller skate used for inline skating. Unlike quad skates, which have two front and two rear wheels, inline skates have two, three, four, or five wheels arranged in a single line...

 with a molded plastic boot are also available. These recreational skates are the form which can be rented from ice rinks for beginners who do not own their own skates. In the non-American English-speaking world they are sometimes called 'death wellies' by skaters who own their own equipment because of their appearance and their reputation for giving people blister
Blister
A blister is a small pocket of fluid within the upper layers of the skin, typically caused by forceful rubbing , burning, freezing, chemical exposure or infection. Most blisters are filled with a clear fluid called serum or plasma...

s. People who own their own skates may further reduce the risk of blisters by adding a friction management patch to areas inside the skate that could rub or chafe.

Types of ice skates

There are five main types of ice skates: the figure skate, the hockey skate, the bandy skate, the racing skate and the touring skate.

Figure skates


Figure skate
Figure skate
Figure skates are a type of ice skate used by figure skaters. The skates consist of a boot and a blade that is attached with screws to the sole of the boot...

s are used in the sport
Sport
A Sport is all forms of physical activity which, through casual or organised participation, aim to use, maintain or improve physical fitness and provide entertainment to participants. Sport may be competitive, where a winner or winners can be identified by objective means, and may require a degree...

 of figure skating
Figure skating
Figure skating is an Olympic sport in which individuals, pairs, or groups perform spins, jumps, footwork and other intricate and challenging moves on ice skates. Figure skaters compete at various levels from beginner up to the Olympic level , and at local, national, and international competitions...

. They have toe picks on the front of the blade, which are usually made out of stainless steel or aluminium with a steel runner. The toe pick has a variety of uses, but is most commonly used for certain jumps in figure skating, such as the Lutz jump
Lutz jump
The Lutz is a figure skating jump, named after Alois Lutz, an Austrian skater who performed it in 1913. It is a toepick-assisted jump with an entrance from a back outside edge and landing on the back outside edge of the opposite foot.- Lutz technique:...

 and toe loop or starting a backspin. Figure skating boots are typically made of several layers of leather
Leather
Leather is a durable and flexible material created via the tanning of putrescible animal rawhide and skin, primarily cattlehide. It can be produced through different manufacturing processes, ranging from cottage industry to heavy industry.-Forms:...

 and the leather is very stiff to provide ankle support. Figure skates, unlike hockey skates, have several sharp points located at the front of the blade. In addition, the figure skate's blade is curved, allowing for minute adjustments in balance and weight distribution.

Hockey skates


Hockey skates are used for playing the games of ice hockey and ringette
Ringette
Ringette is a team sport played on an ice surface. Played primarily by females, Ringette requires the use of straight sticks to control a rubber ring; with the objective of the game being to score goals by shooting the ring into the opponent's net. It was introduced by Sam Jacks in North Bay,...

. The boot is generally made of molded plastic, leather (often synthetic), and ballistic nylon. Skates used in competitive hockey rarely use molded plastic for the upper boot, as this results in limited mobility.

The skates used by goaltenders are cut lower in the ankle than a normal hockey skate and the boot sits closer to the ice for a lower center of gravity. The boot itself is encased in hardened plastic, called a "cowling", protecting the toe, ankle and heel from the force of the shot puck. The blade is usually longer and has less rocker (curvature to the blade) to make it easier for the goalie to move side to side in the crease. Goalie skates lack a tendon guard. Unlike regular hockey skates, goalie skates are usually protected by a synthetic material covering the toe-part of the skate. This is to prevent damage from the puck. The blade of the goalie skate is not as useful in turning than regular hockey skates, because the blade is rockered less, thus making turns slightly inconvenient. The material used to make the boot of the goalie skate is a harder synthetic material than regular hockey boots.

Bandy skates

Bandy skates are used for playing the games of bandy
Bandy
Bandy is a team winter sport played on ice, in which skaters use sticks to direct a ball into the opposing team's goal.The rules of the game have many similarities to those of association football: the game is played on a rectangle of ice the same size as a football field. Each team has 11 players,...

 and rink bandy. The boot is generally made of leather (often synthetic). The boot is lower than the hockey version, often not covering the ankles. All bandy skates are designed such that they will not cause injury to an opponent. The blade is generally an inch longer than the hockey skates, allowing for higher speeds. The Russian bandy skates have an even longer blade and a very low cut shoe.

Racing skates


Racing skates, also known as speed skates, have long blades and are used for speed skating
Speed skating
Speed skating, or speedskating is a competitive form of ice skating in which the competitors race each other in traveling a certain distance on skates. Types of speed skating are long track speed skating, short track speed skating, and marathon speed skating...

. A clap skate
Clap skate
The clap skate is a type of ice skate used in speed skating. Unlike in traditional skates where the blade is rigidly fixed to the boot, clap skates have the blade attached to the boot by a hinge at the front...

 (or clapper skate) is a type of skate where the shoe is connected to the blade using a hinge. Short track racing skates have a longer overall height to the blade to allow for deep edge turns without the boot contacting the ice. For better turning ability, racing skates may have a radius, from 8 metres for short track to 22 metres for long track.

Touring skates

Touring skates (or Nordic skates) are long blades that can be attached, via bindings, to hiking or cross-country ski boots and are used for tour skating
Tour skating
Tour skating is a sport and recreational form oflong distance ice skating on natural ice.The Nordic style of tour skating is popular in the Nordic countries,especially Sweden, but increasingly in...

or long distance skating on natural ice. The blades are approximately 50 cm long with a radius of curvature (or rocker) of about 25 m. The blades are about 1 mm wide, with a flat cross-section. The length of the blades makes touring skates more stable on uneven natural ice than skates with shorter blades. Since tour skating often involves walking between lakes or around unskateable sections, the fact that the blades can be easily removed from one's boots is an asset.

Double runner

Also known as twin blade skates, "cheese cutters", or bob skates, these skates are worn by young children who are learning. The double blades increase stability and help the child to balance.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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