In an inventive tour de force that seldom, if ever, has been equalled for its brilliance and far-reaching consequences, James Watt radically altered the steam engine not only by adding a separate condenser but by creating a whole new family of linkages. His approach was largely empirical, as we use the word today.This study suggests that, despite the glamor of today's sophisticated methods of calculation, a highly developed intuitive sense, reinforced by a knowledge of the past, is still indispensable to the design of successful mechanisms. (Illustrated HTML available at http://www.gutenberg.org/files/27106/27106-h/27106-h.htm.)
[Footnote 5: Henry W. Dickinson and Rhys Jenkins, James Watt and the Steam Engine, Oxford, Clarendon Press, 1927, pp. 146-148, pls. 14, 31. This work presents a full and knowledgeable discussion, based on primary material, of the development of Watt's many contributions to mechanical technology. It is ably summarized in Dickinson, op. cit. (footnote 2).]
In 1777 a speaker before the Royal Society in London observed that in order to obtain rotary output from a reciprocating steam engine, a crank "naturally occurs in theory," but that in fact the crank is impractical because of the irregular rate of going of the engine and its variable length of stroke. He said that on the first variation of length of stroke the machine would be "either broken to pieces, or turned back." John Smeaton, in the front rank of English steam engineers of his time, was asked in 1781 by His Majesty's Victualling-Office for his opinion as to whether a steam-powered grain mill ought to be driven by a crank
When everyone reads minds, a secret is a danger... Read more
Is The Iron Eagle a psychotic serial killer?
In the fall of 1984, Cold War tensions between... Read more
Author Al Macy is a character and a tightwad wi... Read more
See it as donating a moment of your social media time, every little thing helps us improve and stay online.
The list of books below is based on the weekly downloads by our users regardless of eReader device or file format.
See more popular titles from this genre.