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Pirn
A Pirn is a rod onto which weft thread is wound for use in weaving. Unlike a bobbin A bobbin or spool is a spindle or cylinder, with or without flanges, on which yarn, thread, wire, tape or film is wound. Bobbins are typically found in industrial textile machinery, as well as in sewing machines, fishing reels, tape measu ..., it is fixed in place, and the thread is delivered off the end of the pirn rather than from the centre. A typical pirn is made of wood or plastic and is slightly tapered for most of its length, flaring out more sharply at the base, which fits over a pin in the shuttle. Pirns are wound from the base forward in order to ensure snag-free delivery of the thread, unlike bobbins, which are wound evenly from end to end. Pirns became important with the development of the flying shuttle, though they are also used with other end delivery shuttles. Power looms which use pirns generally have automatic changing mechanisms which remove the spent pirn from the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flying Shuttle
The flying shuttle was one of the key developments in the industrialization of weaving during the early Industrial Revolution. It allowed a single weaver to weave much wider fabrics, and it could be mechanized, allowing for automatic machine looms. The flying shuttle, which was patented by John Kay (1704– c. 1779) in 1733, greatly sped up the previous hand process and halved the labour force. Where a broad-cloth loom previously required a weaver on each side, it could now be worked by a single operator. Until this point, the textile industry had required four spinners to service one weaver. Kay's innovation, in wide use by the 1750s, greatly increased this disparity. History The device appears to have been invented in the region of Languedoc of southern France one year before its purported invention in England, but was destroyed by state cloth inspectors of the rent-seeking Ancien Regime. Operation In a typical frame loom, as used previous to the invention of the flying sh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weaving
Weaving is a method of textile production in which two distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth. Other methods are knitting, crocheting, felting, and braiding or plaiting. The longitudinal threads are called the warp and the lateral threads are the weft, woof, or filling. (''Weft'' is an Old English word meaning "that which is woven"; compare ''leave'' and ''left''.) The method in which these threads are interwoven affects the characteristics of the cloth. Cloth is usually woven on a loom, a device that holds the warp threads in place while filling threads are woven through them. A fabric band that meets this definition of cloth (warp threads with a weft thread winding between) can also be made using other methods, including tablet weaving, back strap loom, or other techniques that can be done without looms. The way the warp and filling threads interlace with each other is called the weave. The majority of woven produc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weaving Equipment
Weaving is a method of textile production in which two distinct sets of yarns or threads are interlaced at right angles to form a fabric or cloth. Other methods are knitting, crocheting, felting, and braiding or plaiting. The longitudinal threads are called the warp and the lateral threads are the weft, woof, or filling. (''Weft'' is an Old English word meaning "that which is woven"; compare ''leave'' and ''left''.) The method in which these threads are interwoven affects the characteristics of the cloth. Cloth is usually woven on a loom, a device that holds the warp threads in place while filling threads are woven through them. A fabric band that meets this definition of cloth (warp threads with a weft thread winding between) can also be made using other methods, including tablet weaving, back strap loom, or other techniques that can be done without looms. The way the warp and filling threads interlace with each other is called the weave. The majority of woven products ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wool Weaving Shuttle, Showing Pirn And Eyes
Wool is the textile fibre 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 properties similar to animal wool. As an animal fibre, wool consists of protein together with a small percentage of lipids. This makes it chemically quite distinct from cotton and other plant fibres, which are mainly cellulose. Characteristics Wool is produced by follicles which are small cells located in the skin. These follicles are located in the upper layer of the skin called the epidermis and push down into the second skin layer called the dermis as the wool fibers grow. Follicles can be classed as either primary or secondary follicles. Primary follicles produce three types of fiber: kemp, medullated fibers, and true wool fibers. Secondary follicles only produce true wool fibers. Medullated fibers share nearly identical characteristics to hair and are long but lack crimp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
QSM Pirn Winding , a medical imaging technique
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QSM is an acronym that may stand for: * QuickSilver Scalable Multicast, a networking protocol * Queen's Service Medal, a medal awarded by the government of New Zealand * Quadriceps Sparing Myopathy, a common name for the hereditary inclusion body myopathy IBM2 * Quantitative susceptibility mapping Quantitative Susceptibility Mapping (QSM) provides a novel contrast mechanism in Magnetic Resonance Imaging (MRI) different from traditional Susceptibility Weighted Imaging. The voxel intensity in QSM is linearly proportional to the underlying ti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Weft
Warp and weft are the two basic components used in weaving to turn thread or yarn into fabric. The lengthwise or longitudinal warp yarns are held stationary in tension on a frame or loom while the transverse weft (sometimes woof) is drawn through and inserted over and under the warp. A single thread of the weft crossing the warp is called a ''pick''. Terms vary (for instance, in North America, the weft is sometimes referred to as the ''fill'' or the ''filling yarn'').Barber (1991), p. 79 Each individual warp thread in a fabric is called a ''warp end'' or ''end''.Burnham (1980), pp. 170, 179 Inventions during the 18th century spurred the Industrial Revolution, with the "picking stick" and the " flying shuttle" ( John Kay, 1733) speeding up the production of cloth. The power loom patented by Edmund Cartwright in 1785 allowed sixty picks per minute. Etymology The word ''weft'' derives from the Old English word ''wefan'', to weave. ''Warp'' means "that which is thrown awa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bobbin
A bobbin or spool is a spindle or cylinder, with or without flanges, on which yarn, thread, wire, tape or film is wound. Bobbins are typically found in industrial textile machinery, as well as in sewing machines, fishing reels, tape measures, film rolls, cassette tapes, within electronic and electrical equipment, and for various other applications. Industrial textiles Bobbins are used in spinning, weaving, knitting, sewing, and lacemaking. In these practices, bobbins were invented to "manage the piles of thread and yarn that would be mechanically woven into cloth," where the mechanical began using human power, but eventual became machine-driven. In these applications, bobbins provide storage, temporary and permanent, for yarn or thread. Historically, bobbins were made out of natural materials such as wood, or bone. While not in principle an invention of the Victorian era—bobbins in the production of textiles were in earlier use—the machinery introduced in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
