File:NewcomenWattEngine.png
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Summary
Update of the Newcomen steam engine by James Watt.
Figure 181 of textbook [1]
Description
.. The next great step in the development of the steam en- gine came through a Scotch in- strument maker, James Watt (1736-1819). He arranged a separate vessel for condensing the steam, as shown in figure 181. This condenser, (7, was connected with the cylinder through a valve V. When the piston had reached the top of the cylinder, the valve V was closed and V' was opened. Then the steam rushed from the cylinder into the condenser, which was kept cold and under less than atmospheric pressure. At first these valves V and V' had to be operated by hand, but later, it is said, a boy named Potter, whose job it was to turn these valves, connected the valve handles by cords to the beam ED in such a way that the machine became automatic.
In all these crude machines the steam simply furnished the vacuum, and atmospheric pressure did the work. Later, Watt made a machine with a closed cylinder and a piston that was pushed down as well as up by steam. By the use of a connecting rod and crank shaft, he contrived to change the back-and-forth motion of the piston to a rotary motion, and so made the steam engine available for many new uses. Within a few years the development of the steam engine revolutionized most lines of industry.
Reference
- ↑ https://archive.org/details/practicalphysics00blacrich/page/220/mode/2up PRACTICAL PHYSICS FUNDAMENTAL PRINCIPLES AND APPLICATIONS TO DAILY LIFE BY N. HENRY BLACK, A.M. SCIENCE MASTER, ROXBURY LATIN SCHOOL BOSTON, MASS. AND HARVEY N. DAVIS, fcklfM V ASSISTANT PROFESSOR O HARVARD UNIVERSITY ' * Nefo gorfc THE MACMILLAN COMPANY 1921 All rights reserved p.220
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current | 18:03, 1 October 2021 | ![]() | 759 × 1,119 (17 KB) | T (talk | contribs) | Update of the Newcomen steam engine by James Watt. Figure 181 of textbook <ref> https://archive.org/details/practicalphysics00blacrich/page/220/mode/2up PRACTICAL PHYSICS FUNDAMENTAL PRINCIPLES AND APPLICATIONS TO DAILY LIFE BY N. HENRY BLACK,... |
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