46 FARM APPLIANCES. 



narrow bars are spiked. The best roller is the heaviest, 

 and cast iron is the best material ; although much cheap- 

 er ones may be made of artificial stone molded in 

 wooden cylinders. The material may be mixed as fol- 

 lows : One barrel of good hydraulic cement is well mixed 

 dry with three barrels of coarse, sharp sand. A sufficient 

 quantity of the mixed cement and sand for one section is 

 then wetted and worked up into a thin mortar, and is at 

 once put into the mold ; broken stone, first wetted, may 



Fig. 47. A TRIPLE LAND ROLLER. 



be worked into the center, around a square shaft of oak 

 timber, carefully centered. The whole is well rammed 

 down, and more is added and rammed as it is put in, un- 

 til the mold is filled. The ends of the roller should be 

 of clear cement and sand for a few inches, only the inte- 

 rior being filled in with stone for the sake of economy 

 and for weight as well. When the mass is dry and solid, 

 the mold is taken apart. Wing gudgeons are fitted into 

 the oak shaft. They run in wooden, boxes, bolted to the 

 under side of the frame. In this way a most excellent 

 and useful roller, equal to a cast iron one and quite as 

 durable, may be made for a cash outlay of about three 

 dollars only. 



