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  2. Needle threader - Wikipedia

    en.wikipedia.org/wiki/Needle_Threader

    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.

  3. Birdsell Clover Huller - Wikipedia

    en.wikipedia.org/wiki/Birdsell_Clover_Huller

    The Birdsell Clover Huller was invented by John Comly Birdsell in 1855 in West Henrietta, New York (near Rochester). His machine both removed the hulls from the clover ( threshing ), removed the seeds from the hulls ( hulling ), and cleaned the seeds so they can be used or sold for animal feed and/or soil nutrients.

  4. Tap and die - Wikipedia

    en.wikipedia.org/wiki/Tap_and_die

    Whether manual or automatic, the processing of tapping begins with forming (usually by drilling) and slightly countersinking a hole to a diameter somewhat smaller than the tap's major diameter. The correct hole diameter is listed on a drill and tap size chart , a standard reference in many machine shops .

  5. Threading (manufacturing) - Wikipedia

    en.wikipedia.org/wiki/Threading_(manufacturing)

    In manufacturing, threading is the process of creating a screw thread.More screw threads are produced each year than any other machine element. [1] There are many methods of generating threads, including subtractive methods (many kinds of thread cutting and grinding, as detailed below); deformative or transformative methods (rolling and forming; molding and casting); additive methods (such as ...

  6. Sewing needle - Wikipedia

    en.wikipedia.org/wiki/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.

  7. Lockstitch - Wikipedia

    en.wikipedia.org/wiki/Lockstitch

    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 through the needle. The hook mechanism carries the upper thread entirely around the bobbin case so that it has made one wrap of the bobbin ...

  8. Threading - Wikipedia

    en.wikipedia.org/wiki/Threading

    Threading may refer to: . Thread (computing), a programming technique Threading (epilation), a hair removal method Threading (manufacturing), the process of making a screw thread

  9. Threaded pipe - Wikipedia

    en.wikipedia.org/wiki/Threaded_pipe

    The threaded pipes used in some plumbing installations for the delivery of gases or liquids under pressure have a tapered thread that is slightly conical (in contrast to the parallel sided cylindrical section commonly found on bolts and leadscrews).