1847.] 



Hydraulics for Farmers. 



303 



The following specification is taken from the Journal of tlie 

 Franklin Institute: 



" The nature of my invention and improvement consists in mak- 

 ing use of a column of condensed air between the propelling fluid 

 and the fluid that is to be raised; said air being condensed in a 

 pyramidal-shaped chamber, by means of the momentum of a de- 

 scending column of water — the chamber having a communication, 

 by a small opening at its top, with another chamber, into which 

 the spring water or fluid to be raised, is introduced, called the 

 spring water chamber, and upon which the condensed air in the 

 first named chamber is made to act, causing said fluid to rise 

 through a tube placed in the spring water chamber, (open at its 

 lower end, and closed alternately at its upper end, by means of a 

 valve,) into a large air vessel, or receiver, of the usual form and 

 construction, being conducted thence to its place of destination by- 

 pipes, or hose, in the usual manner. 



Strode's Pneumato Engine. 



Fig. 6 IS a longitudinal section. 



Fig. 7 is a transverse section. 



Fig. 8 is a perspective view. 

 Similar letters in the several figures refer to corresponding parts. 

 A is the main pipe for conducting the propelling water from 

 the head, or reservoir, to the pyramidal air-chamber. The pipe 

 descends below the level of that portion of it which connects with 

 the air-chamber just before it reaches the said chamber, and then 

 ascends in a curved line to it, forming a curved bend in the pipe, 

 as at A', for the purpose of preventing the air received at the 

 valve B, during the time in which the vacuum is produced in the 

 air and water chamber, as hereafter described, from filling the 

 pipe A, as the air will not descend at said bend in the tube, so 

 that the surplus of said air, after having filled the condensing 

 chamber L, may be carried off by the current of water, through 

 the valve B. 



