Image: Newcomens Dampfmaschine aus Meyers 1890

Description: Newcomen beam engine. The steam is produced in the boiler A and reaches the cylinder B through the pipe C. The steam in the cylinder forces the piston D upwards, like in Papin’s invention, assisted by the counterweight K. At the piston D the force is coupled via the fixed rod E and in turn by a chain to the beam F. The counterweight K is attached via the chain H to the other side of the beam. The pump rod I is rigidly coupled to the base of the counterweight, being pushed up and down by the corresponding movements of the counterweight. By stopping the flow of steam through pipe C, by use of the stopcock, the contents of the cylinder are closed off. Water from the reservoir L is injected into the cylinder via the pipe P. (This point in the cycle is shown in the illustration). The injected water speeds up condensation of the steam in the cylinder, causing a vacuum. The piston is pushed downward by the air pressure from outside, moving the mechanically coupled beam F as well. This movement lifts the counterweight K and the coupled pump rod I upwards. The pipe R takes away the condensed water, S marks the section of the U-shaped pipe submerged in the reservoir, closing off the cylinder in a steam tight manner. M is the linkage of a small aŭiliary pump which fills the reservoir L through the pipe N. In the original implementation, the stopcocks were operated manually.
Title: Newcomens Dampfmaschine aus Meyers 1890
Credit: Meyers Konversationslexikon 1890
Author: Meyers Konversationslexikon 1890
Permission: This image comes from the 4th edition of Meyers Konversationslexikon (1885–90). The copyrights have expired and this image is in the public domain. This work is in the public domain in its country of origin and other countries and areas where the copyright term is the author's life plus 100 years or less. This work is in the public domain in the United States because it was published (or registered with the U.S. Copyright Office) before January 1, 1923. This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights.
Usage Terms: Public domain
License: Public domain
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