CHAP, vii.] VARIOUS TYPES OF STEAM-ENGINES. 



439 



employed to distribute the water to different parts of palaces or villas, 

 in parks and in gardens, or anywhere, in a word, where the difference 

 of level to be overcome was not greater than forty feet." 



Savery's engine, we see, utilised the elastic force of the steam to 

 drive back the water directly, and the condensation of the same steam 

 to produce a vacuum, and cause the ascent of the water under the 

 atmospheric pressure. It was a sort of suction and force pump, where 

 the force of the steam took the place of the muscular energy applied 

 to work the piston in the cylinder of these hydraulic apparatus. It 



A. 



FIG. 05. Savery's steam-engine 



is not therefore at all comparable with the modern steam-engine, such 

 as we know it. 



Fourteen or fifteen years after Fapin's attempt, Savery associated 

 himself with two of his own countrymen, Thomas Newcomen and 

 John Cawley, both living at Dartmouth in Devonshire, where one 

 was a blacksmith or ironmonger and the other a 'glazier. From this 

 association arose the steam-engine known as Newcomen's or the 

 Atmospheric Engine. 



