84 FARM MECHANICS 



never waked up to a full realization of their early de- 

 lusion. It is a positive fact that all windmills are not 

 lazy, deceitful nor wholly unreliable. When properly 

 constructed, rightly mounted and kept in good repair, 

 they are not prone to work in a crazy fashion when the 

 tank is full and loaf when it is empty. There are 

 thousands of windmills that have faithfully staid on 

 the job continuously twenty-four hours per day for 

 five or ten years at a stretch, all the time working for 

 nothing year after year without grumbling, except 

 when compelled to run without oil. At such times the 

 protest is loud and nerve racking. 



A good windmill with suitable derrick, pump and 

 piping may cost $150. The yearly expense figures 

 something like this: 



Interest on investment at 6% per annum. . .$ 9.00 



Depreciation 10% 15.00 



Oil 1.00 



Eepairs 3.00 



making a total of $28, which is less than $2.50 per 

 month for the work of elevating a constant supply of 

 water for the house, stable and barnyard. 



ONE-MULE PUMP 



A home-made device that is much used on live-stock 

 ranches in California is shown in the illustration. 

 This simple mechanism is a practical means for con- 

 verting circular mule motion into vertical reciprocat- 

 ing pump action. A solid post is set rather deep in the 

 ground about twelve feet from the well. This post is 

 the fulcrum support of the walking-beam. One end 

 of the walking-beam reaches to the center line of the 

 well, where it connects with the pump shaft. The 



