Search results
Results From The WOW.Com Content Network
Sir Joseph Whitworth, 1st Baronet (21 December 1803 – 22 January 1887) was an English engineer, entrepreneur, inventor and philanthropist. [2] In 1841, he devised the British Standard Whitworth system, which created an accepted standard for screw threads. [3]
Maudslay was the fifth of seven children of Henry Maudslay, a wheelwright in the Royal Engineers, and Margaret (nee Whitaker), the young widow of Joseph Laundy. [1] His father was wounded in action and so in 1756 became an 'artificer' at the Royal Arsenal, Woolwich (then in Kent), where he remained until 1776 [2] and died in 1780.
A screw thread is a helical structure used to convert between rotational and linear movement or force. A screw thread is a ridge wrapped around a cylinder or cone in the form of a helix, with the former being called a straight thread and the latter called a tapered thread.
For his invention of a double pointed needle with an eye at one end, he received the British Patent No. 701 (1755). [2] Barthélemy Thimonnier reinvented the sewing machine in 1830. References
1739: Screw-cutting lathe invented by Henry Hindley (1701–1771). 1780: Modified version of the Newcomen engine (the Pickard engine) developed by James Pickard (dates unknown). 1781: The Iron Bridge, the first metal bridge, cast and built by Abraham Darby III (1750–1789). [54] 1791: The first true gas turbine invented by John Barber (1734 ...
The tapped hole (or nut) into which the screw fits, has an internal diameter which is the size of the screw minus the pitch of the thread. Thus, an M6 screw, which has a pitch of 1 mm, is made by threading a 6 mm shank, and the nut or threaded hole is made by tapping threads into a hole of 5 mm diameter (6 mm − 1 mm).
invented a lathe for cutting screw threads David Wilkinson (January 5, 1771 – February 3, 1852) [ 1 ] was a U.S. mechanical engineer who invented a lathe for cutting screw threads, which was extremely important in the development of the machine tool industry in the early 19th century.
Where a fastener forms its own thread in the component being fastened, it is called a screw. [3] This is most obviously so when the thread is tapered (i.e. traditional wood screws), precluding the use of a nut, [3] or when a sheet metal screw or other thread-forming screw is used. A screw must always be turned to assemble the joint.