ribbing plow
Plowing-tilling device for cutting up and plowing in furrow slices.
coupler head 
Device that secures the ribbing plow to the tractor’s towing hitch.
beam 
Horizontal bar that supports the parts of the plow and receives the pulling action.
frog 
Metal part attached to the end of the leg that supports the moldboard and the shear.
moldboard 
Metal surface that lifts and plows in the furrow slice that was cut up by the colter and the shear.