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Bobbin. Spool or cylinder around which thread, line or wire is coiled. Vintage wooden bobbins, cylindrical, empty of wound fiber, dimensions 16 in. high by 9 in. in diameter. Vintage wooden bobbin, unflanged, wound with yarn and attached to a "shuttle" that fits it for use in a floor loom. A bobbin or spool is a spindle or cylinder, with or ...
Bobbin driver. Throughout history, lockstitch sewing machines have used a variety of methods to drive their bobbins so as to create the lockstitch. Transverse shuttles carry the bobbin in a boat-shaped shuttle, and reciprocate the shuttle along a straight horizontal shaft.
Rotary hook. A rotary hook. 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.
Vibrating shuttle. A vibrating shuttle is a bobbin driver design used in home lockstitch sewing machines during the second half of the 19th century and the first half of the 20th century. It supplanted earlier transverse shuttle designs, but was itself supplanted by rotating shuttle designs.
The Singer Model 27 and later model 127 were a series of lockstitch sewing machines produced by the Singer Manufacturing Company from the 1880s to the 1960s. (The 27 and the 127 were full-size versions of the Singer 28 and later model 128 which were three-quarters size). They were Singer's first sewing machines to make use of "vibrating shuttle ...
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.
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