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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.
To make one stitch, the machine lowers the threaded needle through the cloth into the bobbin area, where a rotating hook (or other hooking mechanism) catches the upper thread at the point just after it goes through the needle. The hook mechanism carries the upper thread entirely around the bobbin case so that it has made one wrap of the bobbin ...
In the same year he built a second and better machine, and "up to this time," says, "I had never seen or heard of a sewing machine other than my own." He sold a one-half interest in the invention to Joseph N. Chapin, of North Adams, and with the proceeds took out his first patent, which bore the date November 12, 1850. It formed a lock stitch ...
Allen B. Wilson filed two important patents for Wheeler & Wilson's sewing machines: the rotating hook and the four-motion feed. [2] His first machine formed a lock stitch by means of a curved needle on a vibrating arm above the cloth plate, and a reciprocating two-pointed shuttle traveling in a curved race below the plate.
1851 by Allen B. Wilson [8] Figures from Wilson's patent 9041, showing rotary hook and bobbin: Rotary hook machines hold their bobbin stationary, and continuously rotate the thread hook around it. The design was popularized in the White Sewing Machine Company's 'Family Rotary' sewing machine [9] and Singer's models 95 and 115. [10]
Singer made an attachment similar to its buttonholer, and using a similar needle-clamp-powered locomotion, in order to confer some zigzagging ability on its straight-stitch machines. Of the variety of "Singer Automatic Zigzagger" attachments produced over the years, two are compatible with 27-series machines: Singer part numbers 160985 and 161102 .
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 lockstitch sewing machine, invented and developed in the 18th and 19th centuries, [10] [11] forms a stitch with two threads: one passed through a needle and another from a bobbin. Each thread stays on the same side of the material being sewn, interlacing with the other thread at each needle hole thanks to the machine's movement. [12]