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Arts and Crafts is a name given to a 19th century style of design inspired by and applied to everyday objects. The style stressed mediaeval styles and skilled craftsmanship in a reaction against industrialisation.
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Art Deco is the name given to a 1920s and 1930s style of design characterised by geometrical shapes, stylised natural forms and symmetrical designs. The style was used for furniture, ornaments, crockery and also architecture.
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Art Nouveau is a name given to a style of design from the 1880s to early 1900s characterised by the application of sinuous natural forms to objet d'art, costume, book bindings and architecture.
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The Audi A2 is the world's first mass produced motor-car constructed from aluminium available in a five door hatchback design with either a 1.4 litre petrol model offering 60 mpg and a 1.4 litre diesel model offering 80 mpg.
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A back pointed knife is a basic knife design in which the back of the blade is straight, and the cutting edge is curved. This design allows the cutting edge to roll off the item being cut and is suited to making swaying cutting movements.
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A bicycle is a two wheeled vehicle driven by the riders feet pushing on cranks or pedals. A common misconception is that the earliest form of bicycle was the dandy-horse, which was pushed along by the rider's feet. However, while both the dandy-horse and the later bicycle are both velocipedes, the dandy-horse is not propelled by cranks.
The first bicycle was introduced to England from France in 1868, and comprised two solid wheels of equal size fitted to a frame, much like a modern bicycle in appearance, with a saddle fitted in the centre and propelled by cranks attached to the front wheel. This vehicle provided such a bumpy ride to the rider that it became popularly known as 'the bone-shaker'. Later came the Penny-Farthing with pedals fixed to the large front wheel which was made large to achieve high speeds. Later still, around 1895, came the safety bicycle with pedals driving the rear wheel by way of a chain, and the rider sitting upon a saddle set back from the front wheel so as to reduce the chances of falling forwards over the handlebars, from this developed the Raleigh bicycle design of 1900 which forms the basis of the modern bicycle. In 1888 the two-person tandem bicycle was invented.
In 1906 it was reported that speeds of 50 mph were attained on a bicycle. Around the same time, slightly earlier, the motorised bicycle (motorcycle or motorbike) was invented.
A typical bicycle is comprised of several parts. The principal and essential being: the frame, front forks, wheels, pedals, saddle, handlebars, chain and brakes. The largest part of the bicycle is the frame, and these vary in design depending upon the specialised intention of the bicycle.
A frame for a BMX bicycle being small, heavily braced and made of aluminium. The frame for BMX xyxling needs to be strong so as to endure the stresses of the bumpy ride, and the saddle low as competitors never sit down during a competition and as such they need space to sprint and jump with ease.
Cross-Country cycle frames are generally made of aluminium and carbon-fibre so as to be light weight. They are relatively small frames to allow quick and easy mounting and dismounting off road, and strong to endure off-road bumpy conditions. The smaller frames are often compensated for by having a longer seat post to allow a normal height saddle position.
The cycle speedway bicycle frame is designed primarily for strength, and as such is typically made from steel or aluminium.
Road racing bicycle frames are designed to be light and stiff. Traditionally they ewre made of steel, but by the start of the 21st century carbon fibre was being used for the more expensive models as this offered the same stiffness at reduced weight. The design of the tubes also developed over time, tubes becoming of a larger diameter, but thinner walls, to allow the same stiffness with reduced weight.
Bicycles are fitted with various types of brake, the most popular being the calliper, cantilever, hydraulic or disc and the V brake. The most common form of brake found on leisure bicycles, is that form used also on road racing bicycles. The calliper brake. Calliper brakes are a very efficient means of rim braking and basically comprise two blocks of rubber or plastic which are squeezed onto the wheel rim when the brake lever is squeezed by the ride.
Cantilever brakes operate on the same principal as calliper brakes, but are of a slightly different design at the wheel end, offering increased clearance between the tyre and the brake pads and as such are frequently employed for cyclo-cross bicycles and mountain bikes.
The most efficient form of rim brake is the V brake. The V brake also offers the most clearance of any rim braking system, and is most often found on mountain bikes.
Hydraulic or disc brakes are the most efficient and powerful form of bicycle brake. They use the wheel hub to brake, rather than the rim. Disc brakes offer the most clearance, and as such are used on mountain bikes, but are also expensive to fit and maintain.
Bicycle wheels are generally of one of three types. The most common and traitional bicycle wheel is the spoked wheel, comprising a rim connected to the central bub by a series of thin metal rods known as spokes. Spoked wheels are light in weight. Less common than spoked wheels, but offering greater strength and durability at the expense of weight are mag wheels which comprise a rim attached to the hub by a few, thick solid plastic bars. Solid wheels, also known as disc wheels, are made from composite material or carbon fibre are very strong, stiff, aerodynamic and very expensive. They are rarely used except as rear wheels in time-trialing and track racing.
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The British Standards Institution (BSI) is an association founded in 1901 at London, which received a royal charter in 1929 and took its present name in 1931. Its function is to formulate standards for building, engineering, chemical, textile, and electrical products, ensuring that they maintain a specified quality. Products so standardised make use of the Kite mark logo as a symbol of quality. Manufacturers who use the Kite mark do so under licence from the BSI on condition that products are subject to regular inspection. Apart from maintaining quality standards in this way, the BSI attempts to ensure that the design of goods is restricted to a sensible number of patterns and sizes for one purpose, to avoid unnecessary variety. The BSI, which collaborates closely with the International Standards Organization, is also actively concerned in metrology, providing information on units of measurement and issuing glossaries defining technical words.
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Byzantine art is the symbolic system which was developed by the early Greek or Byzantine artists out of the Christian symbolism. Byzantine Art arose in South-eastern Europe after Constantine the Great had made Byzantium the capital of the Roman Empire in 330 AD and ornamented that city, which was called after him, with all the treasures of Grecian art.
One of the chief influences in Byzantine art was Christianity, and to a certain extent Byzantine art may be recognized as the endeavour to give expression to the new elements which Christianity had brought into the life of men. The tendency towards Oriental luxuriance and splendour of ornament now quite supplanted the simplicity of ancient taste. Richness of material and decoration was the aim of the artist rather than purity of conception. Yet the classical ideals of art, and in particular the traditions of technical processes and methods carried to Byzantium by the artists of the Western Empire, held their ground long enough, and produced work pure and powerful enough, to kindle the new artistic life which began in Italy with Cimabue and Giotto.
With regard to sculpture the statues no longer displayed the freedom and dignity of ancient art. The true proportion of parts, the correctness of the outlines, and in general
the severe beauty of the naked figure, or of simple drapery in Greek art, were neglected for extravagant costume and ornamentation and petty details. Yet in the best period of Byzantine art, from the 6th to the 11th century, there is considerable spiritual dignity in the general conception of the figures. But sculpture was of second-rate importance at Byzantium, the taste of those times inclining more to mosaic work with the costliness and brilliant colours of its stones.
The first germ of a Christian style of art was developed in the Byzantine pictures. The artists, who appear to have seldom employed the living model, and had nothing real and material before them, but were obliged to find, in their own imaginations, conceptions of the external appearance of sacred persons, such as the mother of Christ or the apostles, could give but feeble renderings of their ideas. As they cared but little for a faithful imitation of nature, but were
satisfied with repeating what was once acknowledged as successful, it is not strange that certain forms, approved by the taste of the time, should be made, by convention, and without regard to truth and beauty, general models of the human figure, and be transmitted as such to succeeding times. In this way the artists in the later periods did not even aim at accuracy of representation, but were contented with stiff general outlines, lavishing their labour on ornamental parts.
Byzantine architecture may be said to have assumed its distinctive features in the church of St Sophia built by Justinian in the 6th century, and still existing as the chief mosque in Constantinople. It is more especially the style associated with the Greek Church as distinguished from the Roman.
The leading forms of the Byzantine style are the round arch, the circle, and in particular the dome. The last is the most conspicuous and characteristic object in Byzantine buildings, and the free and full employment of it was arrived at when by the use of pendentives the architects were enabled to place it on a square apartment instead of a circular or polygonal. In this style of building incrustation, the incrustation of brick with more precious materials, was largely in use. It depended much on colour and surface ornament for its effect, and with this intent mosaics wrought on grounds of gold or of positive colour are profusely introduced, while coloured marbles. and stones of various kinds are greatly made use of. The capitals are of peculiar and original design, the most characteristic being square and tapering downwards, and they are very varied in their decorations.
Byzantine architecture may be divided into an older and a newer (or Neo-Byzantine) style. The most distinctive feature of the latter ia that the dome is raised on a perpendicular circular or polygonal piece of masonry (technically the drum) containing windows for lighting the interior, while in the older style the light was admitted by openings in the dome itself. The Cathedral of Athens is an example of the Neo-Byzantine style.
The Byzantine style had a great influence on the architecture of Western Europe, especially in Italy, where St Mark's in Venice is a magnificent example, as also in Sicily. It had also material influence in Southern France and Western Germany.
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A candelabrum is a large and ornamental candlestick, often of a branched form. Ancient candelabra frequently display much ingenious and artistic treatment in the design, and the branches were often numerous. Marble and other materials, as well as metal, were employed.
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Carpet, a thick fabric, generally composed wholly or principally of wool, for covering the floors of apartments, staircases, and passages in the interior of a house or other place. Carpets were originally introduced from the East, where they were fabricated in pieces, like the modern rugs, for sitting on - a use obviously suggested by the Eastern habit of sitting cross-legged upon the floor. Eastern carpets are still highly thought of in Europe, into which they are largely imported. The good quality Persian, Turkish, and Indian carpets are all woven by hand, and the design is formed by knotting into the warp tufts of woollen threads of the proper colour one after the other.
Of European carpets the Brussels carpet was a common and highly-esteemed variety at the end of the 19th century. It was composed of linen thread and worsted, the latter forming the pattern. The linen basis did not appear on the surface, being concealed by the worsted, which was drawn through the reticulations and looped over wires that were afterwards withdrawn, giving the surface a ribbed appearance.
Wilton carpets were similar to Brussels in the process of their manufacture, but in them the loops were cut open by using wires with a knife-edge, and the surface thus obtained a pile.
Tapestry carpets have also a pile surface. They were traditionally manufactured according to a process patented by Mr. Whytock of Edinburgh in 1832, the great speciality of which was that the threads were particoloured by printing in the proper manner for each design before being woven up.
The Kidderminster or Scotch carpet consisted of two distinct webs woven at the same time and knitted together by the woof. The pattern was the same on both sides of the cloth, but the colours were reversed. An improvement upon this was the three-ply carpeting, made originally at Kilmarnock.
The original Axminster carpets were made on the principle of the Persian or Turkey carpets. Patent Axminster carpets (invented by Templeton of Glasgow, 1839) have a fine pile, which is produced by using chenille as the weft, the projecting threads of which form the pile, which is dyed before being used. Carpets of felted wool, with designs printed on them, are also used, and are very cheap. Cheap jute carpets are also made.
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The Probert Encyclopaedia was designed, edited and programed by
Matt and Leela Probert
©1993 - 2009 The Probert Encyclopaedia
Southampton, United Kingdom
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