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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.
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]
Bobbin (right) and bobbin case for a shuttle hook sewing machine, introduced by Singer for the "Improved Family" model in 1895 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.
The first machine to combine all the disparate elements of the previous half-century of innovation into the modern sewing machine was the device built by English inventor John Fisher in 1844, a little earlier than the very similar machines built by Isaac Merritt Singer in 1851, and the lesser known Elias Howe, in 1845. However, due to the ...
Of a typical garment factory's sewing machines, half might be lockstitch machines, and the other half divided between overlock machines, chain stitch machines, and various other specialized machines. Industrial lockstitch machines with two needles, each forming an independent lockstitch with its own bobbin, are also very common.
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.
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