436 THE HANDBOOK FOR PEACTICAL FARMEES 



sary to decide which general type of equipment to install- — 

 whether one operated by hand, windmill, gasoline engine or other 

 power, or by an hydraulic ram which operates automatically, 

 using the force of a few feet of fall between the source of supply 

 and ram. 



When to use hand, windmill or poiver pumps. — Hand-operated 

 pumps are recommended when small quantities of water are 

 required, as for barn service only, or for trough service only. 



Fig. 218. — Electric motor drive complete water system, consisting of thirty- 

 gallon tank, three gallons per minute, pump belted to one-quarter horse 

 power motor, automatic electric starter, pressure gauge and relief valve. 

 Can be furnished with 110 or 220 volt A. C. or D. C. motor or with 

 thirty-two-volt motor for operation on farm lighting system. 



When water is wanted sufficient to supply barn, house, trough 

 and perhaps other outbuildings, the windmill, power or hydrau- 

 lic ram equipments should be used. 



The windmill has the advantage over the hand system in that 

 it eliminates the manual labor. As the windmill cannot be 

 depended upon at all times, however, it is necessary to use a 



