1847.] 



Hydraulics for Farmers. 



301 



with leather, and easy of access, can be replaced by any person, 

 there being no other part that can wear. 



This ram differs from most others, in having three valves, and 

 a passage for spring water at the head. 



1jcii>ou s Ram — Fis;. 5. 



Description. \ is an impetus-valve in chamber A, opening 

 inwards: when open, permits the spring water to flow from re- 

 servoir N, through valve C, and driving the branch water out of the 

 end of the pipe D, that having acted as a piston in the last 

 stroke; also permitting the branch water to flow from reservoir I, 

 through the pipe J, and passing through the opening of the im- 

 petus-valve V, with increasing velocity, closes the valve; thus 

 suddenly shutting off the escape of water. The ram pipe J, being 

 fifty feet long, and six feet fall, filled with water, being nearly an 

 uncompressed fluid, exerts its force against the column of spring 

 w^ater in pipe D, as a piston, forcing it into chamber B, and clos- 

 ing valve C, driving it up through the air-chamber valve B — the 

 air-chamber being supplied with air, for a spring, receives the 

 water, and gradually presses it up through pipe P, to the required 

 height. When the water in the long ram pipe has spent its 

 power, the superior height of water in pipe P causes the water in 

 pipe J to recoil, and a small portion to repass the valve, and drive 

 the water back in pipe J, though in a rising position, continues 

 to flow a short time after the air-chamber valve has closed and 

 opened, and shut by the ordinary action of the machine. Thus, 

 when the flow of the water through D is suddenly stopped by the 

 valve E, a perfect vacuum is produced immediately below the air- 

 chamber, by the recoil of the water, at which instant the small 

 valve opens, and a portion of air enters, and supplies that which 

 the water absorbs. 



Strobe's Pneumato-Hydraulic Engine. 



Since the foregoing was written, I have received the following- 

 description of an improvement on the hydraulic ram. It is the 

 invention of Mr. Joseph C. Strode, of East Bradford, Chester 

 county, Penn. 



