THE IRKIGATION AGE. 



1001 



A SAMPLE OF GOOD GRADING. 



An interesting piece of road grading work has recently 

 been completed by Thornton Bros, at South St. Paul, Minn. 

 Using a Big Four "30" four-cylinder gas traction engine 

 made by the Gas Traction Company of Minneapolis, and a 

 Russell elevating grader and ditcher, they took out an aver- 

 age of 1,000 cubic yards of earth a day, using eleven teams 

 and one-and-one-half-yard dump wagons and hauling from 

 one and one-half to five blocks, or an average of three 

 blocks. 



As many as ninety loads an hour were taken out and 

 if there had been no time lost waiting for teams, 100 loads 

 could easily have been taken out in an hour. The best 

 Thornton Bros, were ever able to do with their steam engine 

 was fifty loads an hour. With the gas engine a much deeper 

 cut can be taken than is possible with horses, and the en- 

 gine travels easily in mud where it is impossible to work 

 horses. 



The fact that the engine costs absolutely nothing for 

 maintenance when it is not at work is a very important 

 consideration with road and grading contractors, who have 

 to feed and care for large numbers of horses through long 

 periods when they are not at work. When the engine is 

 not at work, no expense can be charged against it, other 

 than interest on the investment, and depreciation. If the 

 engine is properly cared for, the depreciation amounts to 

 very little, for the few parts that can wear out can be re- 

 placed at moderate expense. Interest, maintenance and de- 

 preciation are seldom charged in figuring the expense of 

 horse traction, but they should be and when they are the 

 comparison favors the engine. 



Grading and road construction work makes peculiar de- 

 mands upon an engine ; it calls for a machine which has an 

 ample power reserve, which can travel easily over soft 

 ground and loose earth and up and down all kinds of grades 

 and which is under perfect and instantaneous control of the 

 operator. The lightest of the 30 h. p. gas traction engines 

 weighs only eight and three-fourths tons, and its weight 

 is so distributed that the pressure per square inch under 

 its drivers is less than that per square inch under a horses' 



hoof. The drivers are eight feet high, with rims two feet 

 wide, with conical self -cleaning lugs which take a firm hold 

 on the ground and make slipping impossible. The front 

 wheels and steering mechanism are so arranged that the en- 

 gine can turn in small space, another advantage in construc- 

 tion work. 



The Louis Lake Irrigation an^ Power Company's pro- 

 ject to irrigate 45,000 acres of land in Fremont county, 

 tained in the district. 



Wyoming, and to supply the mines at South Pass, Atlan- 

 tic and Miners' Delight, with light and power is assured. 

 The company has secured a water right to the headwaters 

 of the Little Popoagie river and the land is now being 

 segregaigd under the Carey act through the Lander land 

 office. - 



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When writing to advertisers please mention The Irrigation Age. 



