HANDLING THE HAY CROP 



171 



screwed down tight. The sleigh runner timbers are re- 

 cessed diagonally across the bottom to fit the round 

 U-irons which are let into the bottoms o.f the timbers 

 just enough to prevent scraping the earth when the 



Figure 151. Idaho Hay Derricks. Two styles of hay derricks are 

 used to stack alfalfa hay in Idaho. The drawing to the left shows 

 the one most in use because it is easier made and easier to move. 

 The derrick to the right usually is made larger and more powerful. 

 Wire cable is generally used with both derricks because rope wears 

 out quickly. They are similar in operation but different in construc- 

 tion. The base of each is 16 feet square and the high ends of the 

 booms reach up nearly 40 feet. A single hayfork -*ope, or wire cable, 

 is used ; it is about 65 feet long. The reach is sufficient to drop the 

 hay in the center of a stack 24 feet wide. 



derrick is being moved. These iron U-clamp fasteners 

 are much stronger and better than bolts through the 

 timbers. 



There are timber braces fitted across the corners 

 which, are bolted through the outside timbers to brace 



