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A bobbin or spool is a spindle or cylinder, with or without flanges, on which yarn, thread, wire, tape or film is wound. [1] Bobbins are typically found in industrial textile machinery, [2] as well as in sewing machines, fishing reels, tape measures, film rolls, cassette tapes, within electronic and electrical equipment, and for various other ...
Weft insertion rate is a limiting factor in production speed. As of 2010, industrial looms can weave at 2,000 weft insertions per minute. [37] There are five main types of weft insertion and they are as follows: Shuttle: The first-ever powered looms were shuttle-type looms. Spools of weft are unravelled as the shuttle travels across the shed.
On the eve of the Industrial Revolution it took at least five spinners to supply one weaver. Lewis Paul and John Wyatt first worked on the problem in 1738, patenting the Roller Spinning machine and the flyer-and-bobbin system, for drawing wool to a more even thickness. Using two sets of rollers that travelled at different speeds, yarn could be ...
An engineer inspecting the winding machine. Winding machines are classified based on the materials they are winding, [2] [3] some major types are Coil winding machine; Film winding machine; Rope winding machine [4] Paper winding machine; Foil winding machine; Roll slitting machines; spool winding machine; cop winding machine
A spool of 30/3 thread has a single's equivalent of 10, because a single strand or ply of that thread has a cotton count size of 10. A 20/2 spool has the same single's equivalent as a 30/3, but a 30/2 spool has a single's equivalent of 15, which means it is composed of individually heavier plies than a 30/3.
Elna was a radical departure from its competitors, and its success permanently changed the home sewing machine market, introducing features now considered standard. Its most significant innovation is its free arm, a feature previously found only on industrial sewing machines.