106 THE HYDRAULIC BAM. 



discharges per minute or hour, by means of the rule given 

 for that purpose on page 98 ; then multiply the height of 

 the fall by 5, for the elevation, and divide the number of 

 gallons discharged by the stream by 7, for the quantity 

 of water raised. 



EXAMPLE. Given, a spring with a fall of 8 feet, dis- 

 charging 28 gallons per minute. How high and how 

 much water will it raise per minute by means of a ram- 

 discharging pipe not exceeding 50 rods ? 



SOLUTION. 8x5=40 feet elevation. 28-^7=4 gals, per 

 minute. Ans. 



NOTE. In the same ratio, it will raise 2 gallons 80 feet 

 per minute, or 1 gallon 160 feet per minute, and so on. 



The following working results of water rams now in 

 actual use, will enable the inquirer to ascertain the elevat- 

 ing capacity of springs, with various falls and volume of 

 water. The rams used are " B-umsey & Co.'s Premium 

 Hydraulic Rams," Seneca Falls, K Y. 



1. Fall from surface of water in spring to ram 4 feet. 



Length of supply pipe, inside diameter 1 inch 60 



Volume of water discharged by spring in 10 minutes 25 gallons. 



Length of discharging pipe, inner diameter f inch, curved in 



three places to a semicircle ISO feet. 



Elevation of discharging pipe from ram to cistern 19 



Discharged every ten minutes 3^ gallons. 



2. Fall from surface of water in spring to ram 10 feet. 



Length of supply pipe, inside diameter 1 inches 40 



Volume of water discharged by spring per minute 20 gallons. 



Length of discharging pipe, inch inside diameter 50 rods. 



Elevation of discharging pipe from ram to cistern 85 feet. 



Discharged per minute 2 * gallons. 



