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Fabric tube turning is a sewing technique where an object is sewn with the right sides facing one another, leaving an opening, and is then "turned" out, concealing the stitching and unfinished edge, and leaving an opening through which filler or stuffing may be put into the object. [1]
Later again the charge was exploded by paper tubes (sometimes called Dutch tubes) filled with powder and placed in the vent and ignited by a port-fire. Friction primers (sometimes called friction tubes ) were used in the later black powder era, while in the latest patterns percussion or electric tubes are employed.
types of hand sewing stitches. This is a list of stitches used in hand and machine sewing. The most common standard for stitches in the apparel industry is ASTM International ASTM D6193-16(2020) [1] The standard also covers various types of seams. Under this classification of stitches there are basic groups as follows:
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.
Friction spinning: air is used to propel the sliver of fibres (1) to a carding drum (2) where they drop (3) between two perforated drums (5) that integrate and twist the yarn. Friction spinning or DREF spinning is a textile technology that is suitable for spinning coarse counts of yarns and technical core-wrapped yarns.
Examples include: Backstitch; Overcast stitch; Cross stitch; Buttonhole or blanket stitch; Chain stitch; Knot stitch; These stitches and their variations are named according to the position of the needle and direction of sewing (running stitch, backstitch), the form or shape of the stitch (chain stitch, feather stitch) or the purpose of the stitch (tailor's tack, hem stitch).
Friction extrusion is a thermo-mechanical process that can be used to form fully consolidated wire, rods, tubes, or other non-circular metal shapes directly from a variety of precursor charges including metal powder, flake, machining waste (chips or swarf) or solid billet.
For many purposes, the threads as spun by the ring frame or the mule are ready for the manufacturer; but where extra strength or smoothness is required, as in threads for sewing, crocheting, hosiery, lace and carpets; also where multicoloured effects are needed, as in Grandrelle, or some special form of irregularity, as in corkscrewed, and ...