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Elna's drop-in rotary hook runs with little movement or noise, unlike oscillating shuttle machines popular at the time, which require a bobbin case and vibrate at high speeds due to air resistance. Casas also recognized that "when a woman finishes sewing she wants to get the machine out of the way," [ 4 ] so Elna was designed to be portable and ...
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 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 style of bobbin driver in the machine for which they are intended to be used.
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]
Embroidermodder is a free machine embroidery software tool that supports a variety of formats and allows the user to add custom modifications to their embroidery designs.
Most industrial lockstitch machines sew only a straight line of stitches. Industrial zig-zag machines are available but uncommon, and there are essentially no fancy-pattern stitching industrial machines other than dedicated embroidery and edge decoration machines. Even something as simple as a bar-tack or a buttonhole stitch is usually done by ...
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.
A sewing machine needle is a specialized needle for use in a sewing machine. A sewing machine needle consists of: [1] shank - clamped by the sewing machine's needle holder; shoulder - where the thick shank tapers down to the shaft; shaft - a length suitable for driving the eye and thread through the material and down to the bobbin