spinning, the drawing out, twisting, and winding of fibers into a continuous thread or yarn. From antiquity until the Industrial Revolution, spinning was a household industry. The roughly carded fiber was at first held in one hand and drawn out and twisted by the other hand. The earliest tools were the distaff, a stick on which the fiber was wrapped, and the spindle, a shorter, tapering stick notched at one end and weighted by the wharve or whorl (a disk of stone or clay). The spindle was twirled to twist the thread, which was then wound on it. With these simple tools were spun extremely fine yarns. In India the delicate threads for the famed Dacca muslin were produced by revolving needle-thin pieces of bamboo in a coconut shell. The primitive Gurkha wheel was used to spin coarse yarns. In Europe from the 14th to the 16th cent. the distaff and spindle were gradually superseded by the spinning wheel. It consisted of a spindle set in a frame and revolved by a driving belt passing over a wheel. The great, or wool, wheel, revolving the spindle directly, then by a pulley, twisted the thread; it was then stopped and revolved in the opposite direction to back off the spun yarn, which was then wound on the spindle. The flax, or Saxony, wheel—a more elaborate mechanism operated by a treadle—drew, twisted, and wound the yarn with a continuous motion suited to flax, wool, or cotton. In England improvements of the loom in the 18th cent., increasing the demand for yarn, stimulated inventions that revolutionized spinning. John Wyatt suggested the use of rollers to attenuate the yarn, a process patented in 1738 by his partner, Lewis Paul. James Hargreaves invented c.1765 the spinning jenny, a frame capable of spinning from 8 to 11 threads at once. The softly twisted yarns were not suitable for use as warp threads, but in 1769, Richard Arkwright brought out his frame, which by means of successive pairs of rollers, each revolving faster than the preceding pair, attenuated the yarn and twisted and wound it on bobbins in a continuous action. Operated at first by horse or mule power, later by water power, and still later by steam, spinning rapidly became a factory enterprise. In 1779, Samuel Crompton, combining the best features of the jenny and of Arkwright's frame, invented the mule spinning frame, forerunner of the modern self-acting mule. Because of its intermittent action, the mule is used for fine or delicate yarns. For the mass production of coarser yarns, the ring frame, an elaboration of Arkwright's machine, invented by John Thorp c.1828, draws, twists, and winds the thread in one rapid, continuous operation.

Early machine for turning textile fibre into thread or yarn, which was then woven into cloth on a loom. The spinning wheel was probably invented in India, though its origins are unclear. It reached Europe via the Middle East in the Middle Ages. The improvement of the loom in 18th-century England created a yarn shortage and a demand for mechanical spinning. The result was a series of inventions that converted the spinning wheel into a powered, mechanized component of the Industrial Revolution (see drawing frame; spinning jenny; water frame).

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Blood-spinning is a method used by athletes to shorten the time of the healing of an injury. Small samples of the athlete's blood are spun in a centrifuge in order to increase the concentration of growth hormones. The sample is then injected into the wound, which can then heal as much as five times faster. However, utilising this procedure can fall foul of the World Anti-Doping Agency (WADA) due to possible non-natural elements introduced into the athlete's body.

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