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A power loom is a mechanized loom, and was one of the key developments in the industrialization of weaving during the early Industrial Revolution. The first power loom was designed and patented in 1785 by Edmund Cartwright. [1] It was refined over the next 47 years until a design by the Howard and Bullough company made the operation completely ...
The principal advantage of the Northrop loom was that it was fully automatic; when a warp thread broke, the loom stopped until it was fixed. When the shuttle ran out of thread, Northrop's mechanism ejected the depleted pirn and loaded a new full one without stopping. A loom operative could work 16 or more looms whereas previously they could ...
A schematic diagram of the Jacquard system 19th century Engineering drawing of a Jacquard loom. As shown in the diagram, the cards are fastened into a continuous chain (1) which passes over a square box. At each quarter rotation, a new card is presented to the Jacquard head which represents one row (one "pick" of the shuttle carrying the weft ...
This process is called taking up. At the same time, the warp yarns must be let off or released from the warp beam, unwinding from it. To become fully automatic, a loom needs a tertiary motion, the filling stop motion. This will brake the loom if the weft thread breaks. [4] An automatic loom requires 0.125 hp to 0.5 hp to operate (100W to 400W).
At the Show of the Americas in 1980, Melco unveiled the Digitrac, a digitizing system for embroidery machines. The digitized design was composed at six times the size of the embroidered final product. The Digitrac consisted of a small computer, mounted on an X and Y axis on a large whiteboard. It sold for $30,000.
[5] At this point the loom has become fully automatic, this is the Kenworthy and Bullough Lancashire Loom. The Cartwight loom weaver could work one loom at 120–130 picks per minute- with a Kenworthy and Bullough's Lancashire Loom, a weaver can run up to six looms working at 220–260 picks per minute- thus giving 12 times more throughput.
British Northrop Loom Co Ltd was an engineering firm based in Blackburn, Lancashire, England. The company manufactured machinery for producing textiles, particularly the Northrop Loom. [1] It expanded rapidly around the time of the First World War, and by the 1950s it exported over 10,000 machines annually worldwide. [2]
The more looms system aimed at doubling the number of looms that a weaver would tenter while making modest changes to the conditions of working. One was to respace the looms using horizontal alleys at the end of each eight loom set making access easier. Another was to increase the size of the cop on each pirn to make refilling times longer. The ...