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The majority of sewing machine needles are made of various grades of hardened steel coated with either nickel or chromium, though certain specialty needles are coated with titanium nitride on top of chromium. Titanium nitride is a reflective golden-colored ceramic material which reduces abrasion allowing the needle to stay sharper longer and ...
Older sewing machines designed to sew only a straight stitch can be adapted to sew a zigzag by means of an attachment. The attachment replaces the machine's presser foot with its own, and draws mechanical power from the machine's needle clamp (which requires the needle clamp to have a side-facing thumbscrew). It creates a zigzag by mechanically ...
In 1868, Stephen French, working at the Gold Medal Sewing Machine Company in Orange, Massachusetts, patented an improved method of driving the vibrating arm. He used this mechanism in his designs of both the "Home Shuttle" sewing machine (from Johnson, Clark & Co., a related enterprise) and the Gold Medal "Home" sewing machine.
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 sewing needle. A sewing needle, used for hand-sewing, is a long slender tool with a pointed tip at one end and a hole (or eye) to hold the sewing thread.The earliest needles were made of bone or wood; modern needles are manufactured from high carbon steel wire and are nickel- or 18K gold-plated for corrosion resistance.
A buttonholer is an attachment for a sewing machine which automates the side-to-side and forwards-and-backwards motions involved in sewing a buttonhole. Most modern sewing machines have this function built in, but many older machines do not, and straight stitch machines cannot sew a zigzag stitch with which buttonholes are constructed.