A screw is a type of fastener, in some ways similar to a bolt, typically made of metal, and characterized by a helical ridge, known as a male thread. Screws are used to fasten materials by digging in and wedging into a material when turned, while the thread cuts grooves in the fastened material that may help pull fastened materials together and prevent pull-out. There are many screws for a variety of materials; heremonly fastened by screws … Mass Production of Screws. In 1770, English instrument maker, Jesse Ramsden (1735-1800) invented the first satisfactory screw-cutting lathe. Ramsden inspired other inventors. In 1797, Englishmen , Henry Maudslay (1771-1831) invented a large screw-cutting lathe that made it possible to mass-produce accurately sized screws. The first scientific use of a screw is attributed to Archimedes , the Greek mathematician (about 285 - 212 BC). Middle Ages It is known from written records as well as archaeological excavations that the Romans used the screw-thread principal in many different ways.

It is considered by some that the screw thread was invented in about 400BC by Archytas of Tarentum (428 BC - 350 BC). Archytas is sometimes called the founder of mechanics and was a contemporary of Plato. One of the first applications of the screw principle was in presses for the extraction of oils from olives and juice from grapes. John Landis Mason actually revolutionized food preservation technology with his eponymous and now hipster-beloved jar, patented in 1858; the threaded screw - King Nebuchadnezzar II was the inventor of the screw . He is also credited with the building of the Hanging Gardens of Babylon.

8) A machine for producing tapered threads was not invented until 1842. At the time, the lathes that produced screws were incapable of producing the tapered threading visible on a modern screw . Without tapering, the thread could not continue until the tip of the screw . In 1770, English instrument maker, Jesse Ramsden (1735-1800) invented the first satisfactory screw-cutting lathe. The British engineer Henry Maudslay (1771-1831) patented a screw-cutting lathe in 1797; a similar device was patented by David Wilkinson in the United States in 1798. Archimedes of Syracuse invented the water screw, and Sir Joseph Whitworth invented the first standard screw thread system.