Jacquard, Joseph Marie |
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Jacquard, Joseph MarieJoseph Marie Jacquard was born on July 7, 1752 in Lyon at that time was the centre of silk weaving and Jacques de Vaucanson, who had become the inspector of silk factories in Jacquard worked for many years on his dream of automating the pattern-weaving loom, often to the detriment of his own business. Fortunately his wife was a good hat maker and her work brought in just enough to keep the family going. Jacquard's solution to automate the loom was a device on top of the treadle-operated loom to "process" the punched cards and by using an "endless" loop of connected perforated cards he managed to achieve his dream. The punched cards would pass over a set of needles, which pressed against the card. Whenever a hole in the card came up, the needle would detect this and activate the threading mechanism. Each hole in the card corresponded to a hook, which could be either in the up or the down position. The hook raised or lowered the thread and the sequence of the raised or lowered threads is what constituted the pattern. By changing the pattern of the holes in the cards the pattern in the textile produced on the loom could be changed. The first "programmable" loom had been constructed and it allowed more flexibility and complexity in the patterns than before. As one punched card controlled one row of the design woven, one simply could replace one or more cards to get a different pattern. In 1801 Jacquard showed his loom at the Industrial Exposition in However, the local weaving industry was less enthusiastic about the new invention. Many weavers used their children as draw-boys, thereby securing some income for them as well, and they feared the possible unemployment caused by the Jacquard invention. In 1806 the master of the weaver's guild in The weavers had come to realise that their intricate planning for new patterns could now be stored permanently in punched cards and be used over and over again by anyone. Jacquard's invention has had a major impact on the textile trade and his technology has become the basis for the modern automated looms. Not only could textiles now be produced at a lower cost and with less amount of work involved, but also the actual designs could become more complex, more artistic and technically perfect. The concept of the zigzag folded stream of connected punched cards is also used in the famous Dutch street-organ with its unmistaken sound. Today the holes in the cards control the music played in the streets of Jacquard's loom marks an important step in the history of the development of the computer as he succeeded in perfecting the technique of using punched cards to such an extent that they could be used for program control and the storing of data. Charles Babbage has later adopted Jacquard's concept of the perforated cards when in ca 1830 he used the punched cards as input/output medium for his newly designed Analytical Engine. In 1890 Herman Hollerith applied the same principle in the Even as recent as 2000, punched cards made international headlines, when the Philatelically speaking, Jacquard is only featured once, needless to say on a French stamp, issued in 1934 one hundred years after his death. His loom is shown twice: first on an Austrian stamp of 1947, but a much clearer picture of his loom is shown in the cachet of a 1979 German Postal Card for which I managed to have the loom identified as an early Jacquard model. © Wobbe Vegter Joseph Marie Jacquard was born on July 7, 1752 in Lyon at that time was the centre of silk weaving and Jacques de Vaucanson, who had become the inspector of silk factories in Jacquard worked for many years on his dream of automating the pattern-weaving loom, often to the detriment of his own business. Fortunately his wife was a good hat maker and her work brought in just enough to keep the family going. Jacquard's solution to automate the loom was a device on top of the treadle-operated loom to "process" the punched cards and by using an "endless" loop of connected perforated cards he managed to achieve his dream. The punched cards would pass over a set of needles, which pressed against the card. Whenever a hole in the card came up, the needle would detect this and activate the threading mechanism. Each hole in the card corresponded to a hook, which could be either in the up or the down position. The hook raised or lowered the thread and the sequence of the raised or lowered threads is what constituted the pattern. By changing the pattern of the holes in the cards the pattern in the textile produced on the loom could be changed. The first "programmable" loom had been constructed and it allowed more flexibility and complexity in the patterns than before. As one punched card controlled one row of the design woven, one simply could replace one or more cards to get a different pattern. In 1801 Jacquard showed his loom at the Industrial Exposition in However, the local weaving industry was less enthusiastic about the new invention. Many weavers used their children as draw-boys, thereby securing some income for them as well, and they feared the possible unemployment caused by the Jacquard invention. In 1806 the master of the weaver's guild in The weavers had come to realise that their intricate planning for new patterns could now be stored permanently in punched cards and be used over and over again by anyone. Jacquard's invention has had a major impact on the textile trade and his technology has become the basis for the modern automated looms. Not only could textiles now be produced at a lower cost and with less amount of work involved, but also the actual designs could become more complex, more artistic and technically perfect. The concept of the zigzag folded stream of connected punched cards is also used in the famous Dutch street-organ with its unmistaken sound. Today the holes in the cards control the music played in the streets of Jacquard's loom marks an important step in the history of the development of the computer as he succeeded in perfecting the technique of using punched cards to such an extent that they could be used for program control and the storing of data. Charles Babbage has later adopted Jacquard's concept of the perforated cards when in ca 1830 he used the punched cards as input/output medium for his newly designed Analytical Engine. In 1890 Herman Hollerith applied the same principle in the Even as recent as 2000, punched cards made international headlines, when the Philatelically speaking, Jacquard is only featured once, needless to say on a French stamp, issued in 1934 one hundred years after his death. His loom is shown twice: first on an Austrian stamp of 1947, but a much clearer picture of his loom is shown in the cachet of a 1979 German Postal Card for which I managed to have the loom identified as an early Jacquard model. © Wobbe Vegter |
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