Search results
Results from the WOW.Com Content Network
The thread is kept from unwinding by passing the thread under itself, forming a loop around the tama. True silk – a hollow fiber with a rough surface that resists slipping past the loop unless gently pulled. For synthetic fibers, a flexible plastic "clamshell" bobbin may be preferable. A number of tama in use.
Modern ring spinning frame 1 Draughting rollers 2 Spindle 3 Attenuated roving 4 Thread guides 5 Anti-ballooning ring 6 Traveller 7 Rings 8 Thread on bobbin. The Ring frame is credited to John Thorp in Rhode Island in 1828/9 and developed by Mr. Jencks of Pawtucket, Rhode Island, who (Marsden 1884) names as the inventor. [9]
8 Thread on bobbin. A ring frame was constructed from cast iron, and later pressed steel. On each side of the frame are the spindles, above them are draughting (drafting) rollers and on top is a creel loaded with bobbins of roving. The roving (unspun thread) passes downwards from the bobbins to the draughting rollers.
Tension of the bobbin thread is maintained with a bobbin case, a metal enclosure with a leaf spring which keeps the thread taut. The bobbin case has to be free-floating (not attached to an axle) in order to allow the top thread to pass around the bobbin completely and hook the bobbin thread. Bobbins vary in shape and size, depending on the ...
The rotary hook continuously rotates in place, hooking the upper thread each time its pointed tip passes the 12 o'clock position. Enough upper thread is pulled from above to pass around the bobbin case, which sits loosely inside the hook frame such that loops of thread can pass completely over it.
Spinning is a twisting technique to form yarn from fibers.The fiber intended is drawn out, twisted, and wound onto a bobbin.A few popular fibers that are spun into yarn other than cotton, which is the most popular, are viscose (the most common form of rayon), animal fibers such as wool, and synthetic polyester. [1]
The hook mechanism carries the upper thread entirely around the bobbin case so that it has made one wrap of the bobbin thread. Then the take-up arm pulls the excess upper thread (from the bobbin area) back to the top, forming the lockstitch. Then the feed dogs pull the material along one stitch length, and the cycle repeats.
The forerunner of bobbinet tulle was bobbin lace. Lace has been produced for a long time, made in tedious hand labour with thin thread and needles or bobbins. Bobbin lace is made by weaving the threads by moving the bobbins over or under each other. Much bobbin lace is based on a net ground.