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Needle moves slightly upward to form a small loop in the upper thread at the needle's eye. 4 Shuttle is midway, and its point ('hook') has passed through the loop in the upper thread. Upper thread is now looped around the shuttle's waist. Needle is up. 5 Shuttle is forward again, having completely passed through the loop in the upper thread.
The rotary hook or rotating hook is a bobbin driver design used in lockstitch sewing machines since the 19th century. It triumphed over competing designs because it can run at higher speeds with less vibration. Rotary hooks and oscillating shuttles are the two most common bobbin drivers in use today.
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.
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 ...
Unlike knitting stitch markers, which are closed bands, crochet markers have open slots so that they can be removed and rehung on new rows as a craft item grows. In order to distinguish from other types of stitch markers, the markers designed for crochet use are also known as split stitch markers .
Transverse shuttles carry the bobbin in a boat-shaped shuttle, and reciprocate the shuttle along a straight horizontal shaft. The design was popularized in Singer's 'New Family' machine. [2] The design became obsolete once the other bobbin driver designs were developed. [3] Shuttle from a transverse shuttle bobbin driver
Diagram showing S and Z twist. There are two common ways to ply a balanced yarn: regular and chain plying. Both methods involve the manipulation of "singles"—unplied strands on their own—into multiple-ply yarns by applying twist in the opposite direction than how the single was spun. For example, if in spinning the single the wheel was spinning clockwise (called a "Z" twist, as on any ...
Embroidered boots, 1885. Needlework was an important fact of women's identity during the Victorian age, including embroidery, netting, knitting, crochet, and Berlin wool work.