A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force applied to its head. It first appeared in Mesopotamia during the Neo-Assyrian period and was later described by the Greek mathematician Archytas. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/
Facts
YearSourced to the subject's own account SignificanceSourced to the subject's own accountThe Wyatt brothers' patented screw-cutting machine led to a dedicated wood-screw factory by 1776, mechanizing what had been an entirely hand-cut fastener. 1 Screw
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Source Screw (Wikipedia)
Source Turnbuckle (Wikipedia)
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1. Screw (Wikipedia)
WikipediaLead section (entity-description)
A screw is an externally helical threaded fastener capable of being tightened or released by a twisting force (torque) to the head.
History section, Wyatt brothers patent sentence
The first path was pioneered by brothers Job and William Wyatt of Staffordshire, UK, who patented in 1760 a machine that one might today best call a screw machine of an early and prescient sort.
History section, wood-screw factory sentence
Not until 1776 did the Wyatt brothers have a wood-screw factory up and running.
Associated With: Bolt, Mechanical classifications section, screw versus bolt subsection
A screw is an externally threaded fastener capable of being inserted into holes in assembled parts, of mating with a preformed internal thread or forming its own thread, and of being tightened or released by torquing the head.
Associated With: Power Drill, Tools section
A power tool that does the same job is a power screwdriver; power drills may also be used with screw-driving attachments.
View the Source Turnbuckle (Wikipedia)
Associated With: Turnbuckle, Lead section, opening definition sentenceQuote, Associated With: Turnbuckle, Lead section, opening definition sentence
A turnbuckle, stretching screw or bottlescrew is a device for adjusting the tension or length of ropes, cables, tie rods, and other tensioning systems. It normally consists of two threaded eye bolts, one screwed into each end of a small metal frame, one with a conventional right-hand thread and the other with a left-hand thread.
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