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Needle threader and usage with a needle. Typical needle threader. A needle threader is a device for helping to put thread through the eye of a needle.Many kinds exist, though a common type combines a short length of fine wire bent into a diamond shape, with one corner held by a piece of tinplate or plastic.
The frog is the end-product of thousands years of traditional Chinese knotting craft, which is itself rooted in the Lào zi culture. [3] [11] As a form of fastener, the frog first appeared on traditional Chinese clothing, [1] [12] and can be traced back to the Song dynasty when fabric was braided into braid buckles to create the loop and the button knot.
The trapezoidal metric thread form is similar to the Acme thread form, except the thread angle is 30°. [4] [5] [6] It is codified by DIN 103. [7] While metric screw threads are more prevalent worldwide than imperial threads for triangular thread forms, the imperially sized Acme threads predominate in the trapezoidal thread form.
Wire drawing is a metalworking process used to reduce the cross-section of a wire by pulling the wire through one or more dies. There are many applications for wire drawing, including electrical wiring, cables, tension-loaded structural components, springs, paper clips, spokes for wheels, and stringed musical instruments.
Drawn thread embroidery is a very early form of open work embroidery, and is the basis of lace.Drawn thread work from the 12th century was known as Opus Tiratum and Punto Tirato [1] from the Arab Tiraz workshops in Palermo.
Next is the groove. The groove is a dent that runs along the shaft. It allows for the thread to lie against the needle as it passes through the fabric. The eye is the next part of the needle. It is the hole near the tip of the needle that the thread is passed through. The scarf is the next portion of the sewing needle.
A point has a solid construction if it can be constructed using a straightedge, compass, and a (possibly hypothetical) conic drawing tool that can draw any conic with already constructed focus, directrix, and eccentricity. The same set of points can often be constructed using a smaller set of tools.
The sealants, where used, are typically thread seal tape thread sealant or a thread seal paste pipe dope (sometimes similar in composition to plumber's putty). Because the thread body is tapered (0.75 in/ft or 62.5 mm/m), a larger diameter keeps compressing into a smaller diameter and finally forms a seal (no clearance remains between the ...