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  2. Rotary hook - Wikipedia

    en.wikipedia.org/wiki/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.

  3. Vibrating shuttle - Wikipedia

    en.wikipedia.org/wiki/Vibrating_shuttle

    To intertwine them, the machine must pass its shuttle (containing the bobbin and the lower thread) through a loop temporarily created from the upper thread. Singer bullet shuttle with bobbin exposed. Early sewing machines of the 19th century oscillate their shuttles back and forth on linear horizontal tracks—an arrangement called a ...

  4. Sewing machine - Wikipedia

    en.wikipedia.org/wiki/Sewing_machine

    Tension in a sewing machine refers to the pull of the thread between the needle and the bobbin. Sewing machines have tension discs and a tension regulator. If the stitch is too saggy or too tight, the most likely cause is a tension problem.

  5. Lockstitch - Wikipedia

    en.wikipedia.org/wiki/Lockstitch

    Meanwhile, the lower thread is wound onto a bobbin, which is inserted into a case in the lower section of the machine below the material. 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 ...

  6. Bobbin - Wikipedia

    en.wikipedia.org/wiki/Bobbin

    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 ...

  7. Bobbin driver - Wikipedia

    en.wikipedia.org/wiki/Bobbin_driver

    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]

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  9. Wheeler & Wilson - Wikipedia

    en.wikipedia.org/wiki/Wheeler_&_Wilson

    In 1851 Wilson patented the rotating hook, which performed the functions of a shuttle by seizing the upper thread and throwing its loop over a circular bobbin containing the under thread. [2] This simplified the construction of the machine by getting rid of the reciprocation motion of the ordinary shuttle, and contributed to make a light tool ...

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