64 Colcord's System of 



The great advantage in this manner of 

 pressing with screws is that we get the amount 

 wanted wherever and whenever we want it, it 

 can be put on and taken off at pleasure, the 

 elasticity of the corn with the spring of the 

 timbers above the jack-screws gives it a contin- 

 uous pressure, the time, trouble, and expense 

 of weighting are entirely avoided. Another 

 advantage is, the iron rods can be carried up 

 6 or 8 feet above the top of the wall, arrang- 

 ing the studding above to receive the planks 

 and virtually building the silo so much higher. 

 When the pressure is put on, it brings the 

 cover down between the cement walls; and 

 these planks, also the covering planks, can be 

 packed away above the pit, just where they 

 will be wanted for future use. 



BUILDING SILOS. 



The door in the end of my silo is 4*4 x 6 

 feet. The door-frame is made of 3-x-i 2-inch 

 plank. All around the outside of the door- 

 frame, I spiked a strip of 2-x-4-inch plank. 

 This strip, being embraced in the masonry, 

 formed a lug, or shoulder, to hold the door- 

 frame in position, and prevent its being dis- 

 turbed. I anticipated some trouble in making 



