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The winding step can occupy an area of up to 60 degree of the coil circumference for round coil bobbins and takes one side of rectangular coil bobbins. The area of the winding step is dependent on the wire gauge and coil bobbin geometry.
Toilet-tissue winders are able to change over at running speed, while paper and board winders need to stop the winding process in order to cut the sheet and glue the paper on to a new wind-up core. Top-line winders introduce the paper core through a maintenance pit downstairs, with web interruption time as low as 15 seconds.
Once the bobbin is full, the hobby spinner either puts on a new bobbin, or forms a skein, or balls the yarn. A skein is a coil of yarn twisted into a loose knot. Yarn is skeined using a niddy noddy or other type of skein -winder. Yarn is rarely balled directly after spinning, it will be stored in skein form, and transferred to a ball only if ...
A boat-shaped (German: schiffli) shuttle carries the bobbin thread, which is also known as the schiffli yarn. There is one shuttle per needle. [3] When the front-side needle pierces the fabric it passes the embroidery thread through the fabric from front to rear. As the needle withdraws it forms a loop on the back side of the material.
The primary invention here is "a method of filling a hollow needle with a coil of thread which consists in winding the thread on a flexible core to form a bobbin, inserting the bobbin in the hollow needle, and then withdrawing the flexible core, leaving the coil of thread therein, substantially as described." 1883- Spool Case [18]
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 ...
In fact, it is wound full depth, and randomly until the number of turns have been reached. The only insulation throughout is the insulation on the wire and that of the bobbin. Special sectioned bobbins are used for this type of winding. Devices that use jumble-wound coils include small electric motors, and some types of choke inductors.
This was profitable and machines offering 180,000 spindle were purchased by a sewing thread manufacturer. [7] Brooks and other manufacturers now worked on improving the spinning frame. The principal cause for concern was the design of the Booth-Sawyer spindle. The bobbin did not fit tightly on the spindle and vibrated wildly at higher speeds.
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