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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.
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 ...
Torchon lace (Dutch: stropkant) is a bobbin lace that was made all over Europe. [1] It is continuous, with the pattern made at the same time as the ground. Typical basic stitches include whole stitch, half stitch, and twists, and common motifs include spiders and fans. [ 2 ]
Bobbin lace is a lace textile made by braiding and twisting lengths of thread, which are wound on bobbins to manage them. As the work progresses, the weaving is held in place with pins set in a lace pillow , the placement of the pins usually determined by a pattern or pricking pinned on the pillow.
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 weight of the 27/127 led Singer to produce a 3/4 size version intended for portability, just as the White Sewing Machine Company was doing with its new 3/4 size "Peerless" machine. Singer's portable version evolved thus:
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.
A spool of thread may be described in terms of its "single's equivalent". This is the cotton count size of the thread divided by the number of plies which make it up. 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.