MURPHV: IRRIGATION IN WESTERN KANSAS. 12 7 



Mr. I. L. Diesem irrigated from his plant lo acres, most of which 

 is devoted to vegetables. It consists of two reservoirs, one 60x150 

 ft., the other 80x150 ft., a 14-ft. Halliday windmill on a 35-ft. tower, 

 an 8-inch Cause irrigating pump in a well 8 ft. diameter and 13 ft. 

 deep. The mill makes 32 to 40 revolutions per minute and works on 

 an average 10 hours per day during the irrigating season. The 

 pump makes one 12 -inch stroke for each revolution of the wheel. 

 It is connected to five 2-inch pipes which extend down into the 

 water in the well, and to three 134^ -inch well points driven down into 

 the sand in tjie bottom of the well. The water is raised 17 feet. 

 From the given dimensions we find that from 11. 2 to 14 cub. ft. of 

 water is raised per minute and from 11,900 to 14,875 ft. lbs., or from 

 .36 to .45 of a horse power of useful work is done per minute by the 

 windmill. 



Mr. D. M. Frost's irrigating plant, near Garden City, is of more 

 recent construction. With it he irrigates 20 acres of vegetables. 

 The water is pumped into a reservoir looxioo ft. by three pumps 

 worked by two windmills. The largest pump has a 12 -inch cylinder, 

 lo-inch stroke, and is attached to a 6-inch sand point driven 36^^ ft. 

 into the ground. The water level is 8^2 ft- below the surface of the 

 ground, and the distance to the discharge pipe is 5j^2 ft., hence the 

 water is raised 14 ft. It is worked by a 12 ft. steel "Ideal" wind- 

 mill and raises 167 gallons of water per minute in a good wind. 

 Each of the other pumps has a 6-inch cylinder, 3-inch supply pipe 

 and lo-inch stroke. The two, worked by an overshot wheel, raise 

 66 gallons per minute in a good wind. 



For raising a comparatively small quantity of water a small dis- 

 tance a windmill is undoubtedly the cheapest motor. A great many 

 of them a're in use in Western Kansas and the number is rapidly in- 

 creasing. Very few experiments have been made on windwills to 

 determine the relation of their parts for maximum effect, or test of their 

 power for different wind velocities. Thousands of water motors have 

 been tested and they have been brought to a high state of efficiency, but 

 the only records of any value of experiments on windmills are those of 

 Smeaton, the great English engineer, on model windmills, published 

 in 1755 to '63, and some observations of windmills made by the 

 French engineer. Coulomb, published in 182 1. Some windmill man- 

 ufacturers claim to have made some experiments on their mills, if so 

 they have not given them to the public. The writer has undertaken 

 experiments and tests of windmills and hopes soon to be able 

 to publish results of value; he will therefore in this paper speak 

 very briefly of this part of the subject, leaving the mathematical 

 investigation and experimental results for another paper. 



