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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 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.
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 .
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.
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 ...
The Cloward–Piven strategy is a political strategy outlined in 1966 by American sociologists and political activists Richard Cloward and Frances Fox Piven.The strategy aims to utilize "militant anti poverty groups" to facilitate a "political crisis" by overloading the welfare system via an increase in welfare claims, forcing the creation of a system of guaranteed minimum income and ...
A notched card showing two levels of notching. Edge-notched cards or edge-punched cards are a system used to store a small amount of binary or logical data on paper index cards, encoded via the presence or absence of notches in the edges of the cards. [1]
Marian "Clover" Hooper Adams (September 13, 1843 – December 6, 1885) was an American socialite, active society hostess, arbiter of Washington, DC, and an accomplished amateur photographer. Clover, who has been cited as the inspiration for writer Henry James 's Daisy Miller (1878) and The Portrait of a Lady (1881), was married to writer Henry ...