270 AGRICULTURAL ENGINEERING 



chines are quite generally and successfully used. In addition 

 to homemade models of the machine described, the hayfork 

 can be successfully used to unload hay from a wagon onto a 

 stack by the use of some sort of pole and pulley arrangement, 

 as illustrated. Where a hay loader is available, this system 

 of stacking offers advantages where the hay must be hauled 

 some distance before stacking and where it is desired to build 

 an especially high stack. Apparatus for doing field work 

 with the hayfork may be purchased by those who do not 

 care to make their own outfits. 



BARN HAY TOOLS 



Barn Equipment. The equipment for putting hay into 

 barns consists essentially of forks or slings to hold the hay 

 while being moved from the load, hay carriers with ropes and 

 pulleys, and a track on which the carriers run. 



Forks. There are at least four types of hayforks in use, 

 each of which is adapted to particular conditions. The 

 single tine has spurs at the lower end which stand out at right 

 angles to hold the hay. The hay is released by tripping the 

 spurs, allowing them to turn downward. The single-harpoon 

 fork is adapted to handle hay which hangs together, and is 

 used where it is not desired to lift large quantities at one time. 



The double-harpoon fork is much similar to the single- 

 harpoon fork except that two tines are provided instead of 

 one. It may be secured in lengths from 25 to 35 inches. 



The derrick fork is used quite generally for handling alfal- 

 fa in the field, but is adapted to a variety of conditions. It 

 consists of a frame with four tines at right angles. It is 

 very easy to insert into the hay. 



The grapple fork is used with short hay. It is provided 

 with curved tines which swing toward each other like ice 

 tongs, firmly gripping the hay. The tines are of various 



