The Jacquard Loom is a mechanical loom, invented by Joseph Marie Jacquard in 1801, that has holes punched in pasteboard, each row of which corresponds to one row of the design. The Museum of Science and Industry in Manchester (MOSI located in Manchester, England, is a large Museum devoted to the development of science technology England is a Country which is part of the United Kingdom. Its inhabitants account for more than 83% of the total UK population whilst its mainland A loom is a Machine or device for Weaving thread or Yarn into Textiles Looms can range from very small hand-held frames to large free-standing Joseph Marie Charles nicknamed Jacquard ( 7 July 1752 &ndash 7 August 1834) was a Straw hat maker before becoming Year 1801 ( MDCCCI) was a Common year starting on Thursday (see link for calendar of the Gregorian calendar (or a Common year starting on Tuesday Multiple rows of holes are punched on each card and the many cards that compose the design of the textile are strung together in order. It is based on earlier inventions by the Frenchmen Basile Bouchon (1725), Jean Falcon (1728) and Jacques Vaucanson (1740) [1]. Basile Bouchon was a Textile worker in the Silk center in Lyon who invented a way to control a Loom with a perforated paper tape in 1725 Jacques de Vaucanson ( February 24, 1709 – November 21, 1782) was a French inventor and artist with a mechanical background who is credited
Each hole in the card corresponds to a "Bolus" hook, which can either be up or down. The hook raises or lowers the harness, which carries and guides the warp thread so that the weft will either lie above or below it. In Weaving, the warp is the set of lengthwise Yarns through which the Weft is woven WEFT Champaign 901FM is a Community radio station in Champaign Illinois, founded in 1981 and owned by Prairie Air Inc The sequence of raised and lowered threads is what creates the pattern. Each hook can be connected via the harness to a number of threads, allowing more than one repeat of a pattern. A loom with a 400 hook head might have four threads connected to each hook, resulting in a fabric that is 1600 warp ends wide with four repeats of the weave going across. In Weaving, the warp is the set of lengthwise Yarns through which the Weft is woven
The Jacquard loom was the first machine to use punch cards to control a sequence of operations. Although it did no computation based on them, it is considered an important step in the history of computing hardware. The history of computer hardware encompasses the hardware, its architecture, and its impact on software. The ability to change the pattern of the loom's weave by simply changing cards was an important conceptual precursor to the development of computer programming. Specifically, Charles Babbage planned to use cards to store programs in his Analytical engine. The analytical engine, an important step in the History of computers, was the design of a mechanical general-purpose Computer by the British mathematician Charles
The term "Jacquard loom" is a misnomer. It is the "Jacquard head" that adapts to a great many dobby looms such as the "Dornier" brand that allow the weaving machine to then create the intricate patterns often seen in Jacquard weaving. A Dobby Loom is a type of floor Loom that controls the warp threads using a device called a dobby. Lindauer DORNIER GmbH is a Textile machinery manufacturer located in Lindau, Germany. Jacquard Weaving makes possible in almost any Loom the programmed raising of each warp thread independently of the others
Jacquard looms, whilst relatively common in the textile industry, are not as ubiquitous as dobby looms which are usually faster and much cheaper to operate. However unlike jacquard looms they are not capable of producing so many different weaves from one warp. In Weaving, the warp is the set of lengthwise Yarns through which the Weft is woven Modern jacquard looms are controlled by computers in place of the original punched cards, and can have thousands of hooks.
The threading of a Jacquard loom is so labor intensive that many looms are threaded only once. Subsequent warps are then tied in to the existing warp with the help of a knotting robot which ties each new thread on individually. In Weaving, the warp is the set of lengthwise Yarns through which the Weft is woven Even for a small loom with only a few thousand warp ends the process of re-threading can take days. In Weaving, the warp is the set of lengthwise Yarns through which the Weft is woven
See also
This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL. Timeline of Clothing and Textiles Technology. See also History of clothing and textiles See also Textile manufacturing The Luddites were a Social movement of British Textile artisans in the early Nineteenth century who protested&mdashoften by destroying mechanized Jacquard Weaving makes possible in almost any Loom the programmed raising of each warp thread independently of the others The Free On-line Dictionary of Computing ( FOLDOC) is an online searchable encyclopedic Dictionary of Computing subjects The GNU Free Documentation License ( GNU FDL or simply GFDL) is a Copyleft License for free documentation designed by the Free Software
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