The buckle or clasp is a device used for fastening two loose ends, with one end attached to it and the other held by a catch in a secure but adjustable manner.  Often taken for granted, the invention of the buckle was indispensable in securing two ends before the invention of the zipper. The basic buckle frame comes in a variety of shapes and sizes depending on the intended use and fashion of the era.  Buckles are as much in use today as they have been in the past: used for much more than just securing ones belt, instead they are one of the most dependable devices in securing a range of items.
The word "buckle" enters Middle English via Old French and the Latin buccula or "cheek-strap," as for a helmet. Some of the earliest buckles known are those used by Roman soldiers to strap their body armor together and prominently on the balteus and cingulum. Made out of bronze and expensive, these buckles were purely functional for their strength and durability vital to the individual soldier. The baldric was a later belt worn diagonally over the right shoulder down to the waist at the left carrying the sword, and its buckle therefore was as important as that on a Roman soldier’s armor. 
Bronze Roman buckles cames in various types. Not only used for practical purposes, these buckles were also decorated. A Type I Roman buckle was a “buckle-plate” either decorated or plain and consisted of geometric ornaments. Type IA Roman buckles were similar to Type I buckles but differed by being long and narrow, made of double sheet metal, and attached to small D-shaped buckles (primarily had dolphin-heads as decorations). Type IB “buckle-loops” were even more similar to Type IA buckles, only difference being that instead of dolphin-heads, they were adorned with horse-heads. There were also Type II buckles (Type IIA and Type IIB) used by Romans, but all types of Roman buckles could have served purposes for simple clothing as well, and predominantly, as a military purpose. 
Aside from the practical use found in Roman buckles, Scythian and Sarmatian buckles incorporated animal motifs that were characteristic to their respective decorative arts.  These motifs often represented animals engaged in mortal combat. These motifs were imported by many Germanic peoples and the belt buckles were evident in the graves of the Franks and Burgundies. And throughout the Middle Ages, the buckle was used mostly for ornamentation until the second half of the 14th century where the knightly belt and buckle took on its most splendid form. 
Buckles remained exclusively for the wealthy until the 15th century where improved manufacturing techniques made it possible to easily produce a cheaper molded item available to the general population. 
The buckle essentially consists of four main components: the frame, chape, bar, and prong. The oldest Roman buckles are of a simple "D"-shaped frame, in which the prong or tongue extends from one side to the other. In the 14th century, buckles with a double-loop or "8"-shaped frame emerged. The prongs of these buckles attach to the center post. The appearance of multi-part buckles with chapes and removable pins, which were commonly found on shoes, occurred in the 17th century.
The frame is the most visible part of the buckle and holds the other parts of the buckle together. Buckle frames come in various shapes, sizes, and decorations. The shape of the frame could be a plain square or rectangle, but may be oval or made into a circular shape. A reverse curve of the frame indicated that the whole buckle was intended to be used for securing a thick material, such as leather. This reverse curve shape made it easier to thread the intended thick material end over the bar. But the shape of the frame is not limited to simply squares and ovals, the decoration of the frame itself defines the shape it will turn out to be. Since the frame is the largest part of the buckle, any and all decorations are placed on it. Decorations range from wedged shapes, picture references to people and animals, and insignia of a desired organization. 
The part of the frame that strap goes through prior to putting the tongue/prong through the hole is often referred to as the 'end bar'. The 'center bar' holds the tongue and the part (if present) that holds the tip of the strap in place is called the 'keeper' or 'keeper bar' these terms are used when additional information is needed to describe a buckle for measurements or design. Note that if a separate piece of leather or metal is attached to the strap for holding the tip of the belt/strap in place that is sometimes also called a 'keeper'.
Chapes or "caps" of various designs could be fitted to the bar to enable one strap end to be secured before fastening the other, adjustable end. This made buckles easily removable and interchangeable, leading to a significant advantage since buckles were expensive.  Unfortunately, the teeth or spikes on the semi-circular chapes damaged the straps or belts, making frequent repairs of the material necessary. Buckles fitted with "T"-, anchor-, or spade-shaped chapes avoided this problem but needed a slotted end in the belt to accommodate them. 
The belt buckle chapes are frequently made in a form of a plate, thus the name buckle plate.
The prong (also named pin) is typically made out of steel or other types of metal. In conventional belts, the prong fits through the buckle to secure the material at a pre-set length. 
The prong is usually referred to as the tongue of the buckle in America, as in 'lock-tongued buckle'. Prong is only used when the tongue is permanently fixed in position. 
The bar serves to hold the chape and prong to the frame. When prongs and chapes are removed from the buckle design, the buckle incorporated a movable bar relying on the tension of the adjusted belt to keep it in place. 
The first known buckles to be used were made out of bronze for their strength and durability for military usage.  
For the last few hundred years, buckles have been made from brass (an alloy of copper and zinc). In the 18th century, brass buckles incorporated iron bars, chapes, and prongs due to the parts being made by different manufactures. Silver was also used in buckle manufacturing for its malleability and for being strong and durable with an attractive shine. White metal, any bright metallic compound, was also used in all styles of buckles; however, if iron was present, rust will form if it is allowed to be exposed and remain in damp conditions. 
Pearl buckles have been made from pearly shells and usually for ladies’ dresses. Since a reasonable size flat surface was needed to make a buckle, oyster was commonly used to make these types of buckles. The quality and color of course vary, ranging from layers of yellow and white to brown or grey. 
When preferred materials were scarce during the Great Depression of the 1930s and the two World Wars, buckles became a low priority and manufactures needed to find ways to continue to produce them cheaply. Makers turned to wood as a cheap alternative since it was easily worked by hand or simple machinery by impressing the designs onto the wood. But there were problems using wood. Any attempt to brighten the wood’s dull appearance with painted designs or plasterwork embellishments immediately came off if the buckle were to be washed. 
Buckles were not entirely made out of leather because a frame and bar of leather would not be substantial enough to carry a prong or the full weight of the belt and anything the belt and buckle intend to support. However, leather (or dyed suede, more common to match a lady’s garment color) was used more as a “cover-up” for cheap materials to create a product worthy of buying. 
Buckles were not made out of glass; rather the glass was used as a decorative feature that covered the entire frame of a metal buckle. One method of creating glass buckles was gluing individual discs of glass to the metal frame. Another more intricate method was to set a wire into the back of a glass disc, and then threading the wire through a hole in the fretted frame of the buckle. The glass was further secured by either bending it over the back of the frame or splayed out like a rivet. 
Celluloid, a type of thermoplastic invented in 1869, was used sparingly and only for decoration until after World War I where it began to be produced on a wider commercial scale. After World War II, the chemical industry saw a great expansion where Celluloid and other plastics such as Casein and Bakelite formed the basis of the buckle-making industry.  Many thermoplastic polymers such as nylon are now used in snap-fit buckles for a wide variety of applications.
Although any device that serves to secure two loose ends is casually called a buckle, if it consists of two separate pieces with one for a hook and the other for a loop, it should be called a clasp. Clasps became increasingly popular at the turn of the 19th century with one clear disadvantage: since each belt end was fixed to each clasp piece, the size of the belt was typically not adjustable unless an elastic panel was inserted. 
A buckle without a chape or prongs is called a buckle trim or slide. It may have been designed this particular way or it may have lost its prongs through continuous use. This type was frequently used in home dress-making (belt end being secured with the simple hook-and-eye) and was purely used for decoration for items such as shoe fronts to conceal unattractive elastic fitting. 
The belt buckle is the conventional buckle with a frame, bar and prong gives the most reliable and easy-to-use closure for a belt. It is not meant, by design, to offer much space for decoration, but for its time-tested reliability. 
A conventional snap-fit buckle that is formed by a "male" buckle member—the hook end—and a "female" buckle member—the insertion end. The male buckle member consists of a center rod and two spring prongs equally spaced from the center rod. The two spring arms each have a retaining block that terminates at the front end. The female buckle member has a front open side and two side holes which hold and secure the two spring arms of the male buckle member.  This sort of buckle may be found connecting many strapped items such as pet harnesses, safety harnesses, personal flotation jackets, fanny packs and other bags, belts, gun slings, and boots. It is also known as the "parachute buckle". They are often used in conjunction with tri-glide slides.
In the United States, during the American Civil War of the 1860s, some members of the military wore brass belt buckles. These buckles had a pin that was inserted directly into the belt, thus not having any moving parts. In 1920, this type of buckle was awarded to winners of professional rodeo contests at the San Francisco Cow Palace in California.  Throughout the 1920s and later, they were used as trophies awarded to champions of bull riding, barrel racing, steer roping, bronc riding and other rodeo skill competitions. 
By the 1950s, Hollywood Westerns featured cowboys wearing large, shiny belt buckles and this influenced country/western fashion.  During the 1990s, country/western dance competitions mirrored the practice by awarding championship buckles to their dance champions. 
Modern-day western belt buckles are commonly made of silver, brass, pewter, zinc alloy, or stainless steel. 
A belt is a flexible band or strap, typically made of leather, plastic, or heavy cloth, worn around the natural waist or near it. The ends of a belt are free; and a buckle forms the belt into a loop by securing one end to another part of the belt, at or near the other end. Often, the resulting loop is smaller than the hips. Belts come in many lengths because of the variety in waist sizes, and most belts can be adjusted at the buckle to suit the wearer's waist.
Webbing is a strong fabric woven as a flat strip or tube of varying width and fibres, often used in place of rope. It is a versatile component used in climbing, slacklining, furniture manufacturing, automobile safety, auto racing, towing, parachuting, military apparel, load securing, and many other fields.
A spur is a metal tool designed to be worn in pairs on the heels of riding boots for the purpose of directing a horse or other animal to move forward or laterally while riding. It is usually used to refine the riding aids (commands) and to back up the natural aids. The spur is used in many equestrian disciplines. Most equestrian organizations have rules in about spur design and use and penalties for using spurs in any manner that constitutes animal abuse.
Chaps are sturdy coverings for the legs consisting of leggings and a belt. They are buckled on over trousers with the chaps' integrated belt, but unlike trousers, they have no seat and are not joined at the crotch. They are designed to provide protection for the legs and are usually made of leather or a leather-like material. Their name is a shortened version of the Spanish word chaparajos. Chaparajos were named after the chaparral from which they were designed to protect the legs while riding on horseback. Like much of western American horse culture, the origin of chaparajos was in the south of Spain, from which it then passed on to the part of New Spain that later became Mexico, and has been assimilated into cowboy culture of the American west. They are a protective garment to be used when riding a horse through brushy terrain. In the modern world, they are worn for both practical work purposes and for exhibition or show use. Chaps have also been adopted for use on motorcycles, particularly by cruiser-style motorcycle riders.
The sporran, a traditional part of male Scottish Highland dress, is a pouch that performs the same function as pockets on the pocketless kilt. Made of leather or fur, the ornamentation of the sporran is chosen to complement the formality of dress worn with it. The sporran is worn on a leather strap or chain, conventionally positioned in front of the groin of the wearer.
Sandals are an open type of footwear, consisting of a sole held to the wearer's foot by straps going over the instep and around the ankle. Sandals can also have a heel. While the distinction between sandals and other types of footwear can sometimes be blurry, the common understanding is that a sandal leaves all or most of the foot exposed. People may choose to wear sandals for several reasons, among them comfort in warm weather, economy, and as a fashion choice.
Western saddles are used for western riding and are the saddles used on working horses on cattle ranches throughout the United States, particularly in the west. They are the "cowboy" saddles familiar to movie viewers, rodeo fans, and those who have gone on trail rides at guest ranches. This saddle was designed to provide security and comfort to the rider when spending long hours on a horse, traveling over rugged terrain.
A strap, sometimes also called strop, is an elongated flap or ribbon, usually of leather or other flexible materials.
Belting is the use of belts made of strong materials as a whip-like instrument for corporal punishment. Although also used in educational institutions as a disciplinary measure, it has most often been applied domestically by parents. This practice has now been abolished by most schools, at least in the Western world, as it is seen by many as an abusive and excessive punishment.
The Special Naval Landing Forces were naval infantry units of the Imperial Japanese Navy (IJN) and were a part of the IJN Land Forces. They saw extensive service in the Second Sino-Japanese War and the Pacific theatre of World War II.
A belt buckle is a buckle, a clasp for fastening two ends, such as of straps or a belt, in which a device attached to one of the ends is fitted or coupled to the other. The word enters Middle English via Old French and the Latin buccula or "cheek-strap," as for a helmet. Belt buckles and other fixtures are used on a variety of belts, including cingula, baltea, baldrics and later waist-belts.
A hobble, or spancel, is a device which prevents or limits the locomotion of an animal, by tethering one or more legs. Although hobbles are most commonly used on horses, they are also sometimes used on other animals. On dogs, they are used especially during force-fetch training to limit the movement of a dog's front paws when training it to stay still. They are made from leather, rope, or synthetic materials such as nylon or neoprene. There are various designs for breeding, casting, and mounting horses.
A court shoe, or pump, is a shoe with a low-cut front, or vamp, with either a shoe buckle or a black bow as ostensible fastening. Deriving from the 17th and 18th century dress shoes with shoe buckles, the vamped pump shape emerged in the late 18th century. By the turn of the 19th century, shoe buckles were increasingly replaced by black bows, which has remained the contemporary style for men's formal wear, leather or patent leather evening pumps ever since. This latter style is sometimes also called an opera pump or opera slipper.
The All-Purpose Lightweight Individual Carrying Equipment (ALICE) is a set of load-carrying equipment adopted as United States Army Standard A on 17 January 1973 to replace the M-1956 Individual Load-Carrying Equipment (ILCE) and M-1967 Modernized Load-Carrying Equipment (MLCE). Although since superseded by MOLLE, ALICE gear is still in some limited use with the U.S. Army National Guard, State Guard, also some ground units of the Navy and Air Force.
An animal collar is a device that attaches to the neck of an animal to allow it to be harnessed or restrained.
Grips are devices that are worn on the hands of artistic gymnasts when performing on various apparatus. They are worn by female gymnasts on the uneven bars, and by male gymnasts on the high bar and still rings; it is rare to wear them on the parallel bars. Grips are used to enhance the gymnast's grip on the apparatus and to reduce friction, which can cause painful blisters and rips, in which outer layers of skin separate and tear away from the hand.
Girdle books were small portable books worn by medieval European monks, clergymen and aristocratic nobles as a popular accessory to medieval costume, between the 13th and 16th centuries. They consisted of a book whose leather binding continued loose below the cover of the book in a long tapered tail with a large knot at the end which could be tucked into one's girdle or belt. The knot was usually strips of leather woven together for durability. The book hung upside down and backwards so that when swung upwards it was ready for reading. The books were normally religious: a cleric's daily Office, or for lay persons a Book of Hours. One of the best known texts to become a girdle book is Boethius's The Consolation of Philosophy, although it is the only surviving philosophical/theological girdle book.
The M-1956 Load-Carrying Equipment (LCE), also known as the Individual Load-Carrying Equipment (ILCE), was developed by the U.S. Army and first issued in the early 1960s. The M-1956 LCE was designed to replace the M-1945 Combat Pack, the M-1923 cartridge belt, the M-1936 pistol belt and the M-1937 BAR magazine belt. The M-1956 LCE was designed to be quickly configured, using no tools, to accommodate various mission and ammunition loads. The M-1956 LCE remained in service through the 1980s and set the standard for future United States military load-carrying equipment.
Anglo-Saxon dress refers to the clothing and accessories worn by the Anglo-Saxons from the middle of the fifth century to the eleventh century. Archaeological finds in Anglo-Saxon cemeteries have provided the best source of information on Anglo-Saxon costume. It is possible to reconstruct Anglo-Saxon dress using archaeological evidence combined with Anglo-Saxon and European art, writing and literature of the period. Archaeological finds have both supported and contradicted the characteristic Anglo-Saxon costume as illustrated and described by these contemporary sources.
A watch strap, watch band,watch bracelet or watch belt is a bracelet that straps a wrist watch onto the wrist. Watch straps may be made of leather, plastic, rubber, cloth, or metal, sometimes in combination. It can be regarded as a fashion item, serving both a utilitarian and decorative function. Some metal watch straps may be plated with, or even in rare cases made of, precious metals.