Shoelaces
Shoelaces (UK English), which are also called shoestrings (US English) or bootlaces (UK English), are a system commonly used to secure shoes, boots and other footwear. They typically consist of a pair of strings or cords, one for each shoe, finished off at both ends with stiff sections, known as aglets. Each shoelace typically passes through a series of holes, eyelets, loops or hooks on either side of the shoe. Loosening the lacing allows the shoe to open wide enough for the foot to be inserted or removed. Tightening the lacing and tying off the ends secures the foot within the shoe.
Shoelace construction
Traditional shoelaces were made of leather, cotton, jute, hemp, or other materials used in the manufacture of rope. Modern shoelaces often incorporate various synthetic fibers, which are generally more slippery and thus more prone to coming undone than those made from traditional fibers. On the other hand, smooth synthetic shoelaces generally have a less rough appearance, suffer less wear from friction, and are less susceptible to rotting from moisture. Specialized fibers like flame resistant nomex are applied in safety boots for firefighters.There are also various elasticized shoelaces:
- Traditional "elastic" laces look identical to normal laces, and can simply be tied and untied as normal. They may also come with a permanent clip so they can be fastened invisibly.
- "Knotty" laces have a series of "fat" sections, which restrict movement through eyelets. These can be used to adjust tension throughout the lacing area. These laces can be tied or the ends can be left loose.
- "Twirly' laces are like a tight elastic helix, which can simply be pulled tight without requiring a knot.
Shoelaces with a flat cross-section are generally easier to hold and stay tied more securely than those with a round cross-section. Very wide flat laces are often called "fat laces." Leather shoelaces with a square cross-section, which are very common on boat shoes, are notoriously prone to coming undone.
Shoelaces can be coated, either in the factory or with aftermarket products, to increase friction and help them stay tied.
Common bow
Shoelaces are typically tied off at the top of the shoe using a simple bow knot. Besides securing the shoe, this also takes up the length of shoelace exposed after tightening. The common bow consists of two half knots tied one on top of the other, with the second half-knot looped in order to allow for quick untying. When required, the knot can be readily loosened by pulling one or both of the loose ends.When tying the half-knots, a right-over-left half knot followed by a left-over-right half knot (or vice versa) forms a square or reef knot, a fairly effective knot for the purpose of tying shoelaces. However, tying two consecutive right-over-left half knots (or two consecutive left-over-right half knots) forms the infamous granny knot, which is much less secure.[1] Most people who use it will find themselves regularly retying their shoelaces.[2]
If the loops lie across the shoe (left to right), the knot is probably a square knot. If they lie along the shoe (heel to toe), the knot is probably a granny knot.
Other more secure knots
There are several more secure alternatives to the common shoelace bow, with names such as Turquoise Turtle Shoelace Knot, or Shoemaker's Knot, Better Bow Shoelace Knot, Surgeon's Shoelace Knot, and Ian's Secure Shoelace Knot, or double slip knot. One such knot has been patented in 1999 under the title "Shoelace tying system".[3] These are all variations of the same concept of looping the top part of the knot twice instead of once, which results in a finished bow of almost identical appearance but with the laces wrapped twice around the middle. This double-wrap holds the shoelaces more securely tied while still allowing them to be untied with a (slightly firmer) pull on the loose end(s).Length
The proper length of a shoelace fitting it to a shoe varies according to the type of lacing used as well as the type of lace. However at a rough reference the following guide can be used.[4] Note this is the total number of holes, if you count 6 holes on one side you have 12 holes (150cm).No of holes | Length/cm |
---|---|
2 | 45 |
3 | 65 |
4 | 75–85 |
5 | 85–90 |
6 | 100 |
7 | |
8 | 120 |
9 | |
10 | 130 |
11 | |
12 | 150 |
13 | |
14 | 180 |
15 | |
16 | 200 |
Shoe lacing
Many shoe lacing methods have been developed with specific functional benefits, such as being faster or easier to tighten or loosen, binding more tightly, being more comfortable, using up more lace or less lace, adjusting fit, preventing slippage, and suiting specific types of shoes. One such method, patented in 2003 as "Double helix shoe lacing process", runs in a double helix pattern and results in less friction and faster and easier tightening and loosening.[8] Another method, called as "Rinlers Instant Lace Up", use additional accessories for instant tightening and loosening.[9]
History
It is as difficult to determine the exact history of shoelaces as it is for shoes. Archaeological records of footwear are rare because shoes were generally made of materials that deteriorated readily. The Areni-1 shoe, which has been dated to around 3500 BC, is a simple leather "shoe" with leather "shoelaces" passing through slotted "eyelets" cut into the hide. The more complex shoes worn by Ötzi the Iceman, who lived around 3300 BC, were bound with "shoelaces" made of lime bark string.As for shoelaces in the sense that we know them in modern times, the Museum of London has documented examples of medieval footwear dating from as far back as the 12th century, which clearly show the lacing passing through a series of hooks or eyelets down the front or side of the shoe.[10]
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