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SHUTTLE (O. Eng. shitel, &c.; from th...

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Originally appearing in Volume V24, Page 1024 of the 1911 Encyclopedia Britannica.
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SHUTTLE (O. Eng. shitel, &c.; from the same word as " shoot ")  , a See also:boat-shaped See also:implement used in See also:weaving to pass a See also:thread of weft to and fro between two lines of warp . The origin of this implement is lost in the mists of a remote antiquity, and yet it was See also:long preceded by the See also:loom . Several See also:wall paintings at See also:Thebes depict looms that are apparently provided with a hooked See also:rod for See also:drawing weft through the warp, but with such a See also:device either two weft threads would be simultaneously placed in one See also:division of the warp, or the selvages would be imperfect . Since neither of these conditions obtain in the See also:ancient See also:Egyptian fabrics that have been recovered, it may be concluded that some other See also:plan was also adopted . Netting needles have been found in Egyptian tombs, and as these would be more suitable for weaving than a hooked rod, it is conceivable they were so employed . Or a See also:spinning spindle charged with weft might be conveyed through the :warp, as was customary, at a much later See also:period, with See also:Greek, See also:Roman and other weavers . So long as a See also:shuttle was thrown from See also:hand to hand, the breadth of See also:cloth which one See also:weaver could produce was limited to his ability to reach from selvage to selvage of the piece . But from 1733, when See also:John See also:Kay invented the " See also:fly shuttle," these implements have been made straight, and propelled mechanically, also, to secure See also:light See also:running, they have been mounted upon rollers which project slightly on the under See also:side . Shuttles are now made in various forms and sizes from See also:box, and other hard-grained, smooth See also:woods, as well as from vulcanized fibre and metals . For See also:silk weaving by hand, they are approximately 12 in. long by 1 in. square in See also:section, and weigh about 3 oz.; those for See also:calico weaving by See also:power, are about 121 in. long, 11 in. wide, 14 in. deep, and weigh about 91 oz.; they are also provided with conical See also:steel tips which abut upon See also:short coiled springs let into the shuttle . The construction, fixing and See also:control of shuttle See also:tongues , that hold the weft, together with numerous devices for putting the thread under an elastic tension, have formed the subjects for many See also:patents . The tongues intended to hold cops are split to See also:form a See also:spring whose strength suffices to See also:fix the cop in position while the thread is See also:drawn from the See also:outer end through a See also:porcelain See also:eye in the shuttle front, the tension being regulated by deflection .

The small shuttles employed to weave See also:

ribbons, and other narrow goods, are bowed in front, recessed to hold a spool of weft, and have an eye fixed at the centre of the See also:bow for the thread to pass through as it unrolls . These shuttles are formed into sets, which correspond with the number of fabrics to be manufactured simultaneously and may be placed on one level, or in tiers; in either event, all in one See also:horizontal See also:plane are moved to and fro together across different webs, by means of racks and pinions; for a See also:rack is inserted lengthwise in each shuttle, and by engaging the racks with intermittently driven pinions, the shuttles receive their requisite movements .

End of Article: SHUTTLE (O. Eng. shitel, &c.; from the same word as " shoot ")
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