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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 ...
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).
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 ...
The word automaton is the latinization of the Ancient Greek automaton (αὐτόματον), which means "acting of one's own will".It was first used by Homer to describe an automatic door opening, [2] or automatic movement of wheeled tripods. [3]
[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.
Beating-up: The third primary movement of the loom when making cloth: the action of the reed as it drives each pick of weft to the fell of the cloth. [26] The Lancashire Loom was the first semi-automatic loom. Jacquard looms and Dobby looms are looms that have sophisticated methods of shedding. They may be separate looms or mechanisms added to ...
The first example of this at Toyota was the auto-activated loom of Sakichi Toyoda that automatically and immediately stopped the loom if the vertical or lateral threads broke or ran out. For instance rather than waiting until the end of a production line to inspect a finished product, autonomation may be employed at early steps in the process ...
Both the Jacquard process and the necessary loom attachment are named after their inventor. This mechanism is probably one of the most important weaving innovations, as Jacquard shedding made possible the automatic production of unlimited varieties of complex pattern weaving. The term "Jacquard" is not specific or limited to any particular loom ...