Jointer Attachment of Plows. 



249 



the soil is dry and hard the heel needs to be set down, as 

 shown at C, Fig. 84, and the point may need to dip even 

 more than in Fig. 83, but when the soil is wet and mellow 

 the shape shown in Fig. 85 is required to prevent it draw- 

 ing 1 too deeply into the ground. 



In taking the share to the shop for sharpening or setting 

 the laiidside should accompany it in order that the black- 

 smith may have a guide in giving it the proper shape. 



312. The Jointer Attachment. One of the most useful 

 attachments for a plow is known as a jointer, represented 

 in Fig. 86. This tool is used to great advantage when con- 

 siderable material needs to be turned under, such as long 

 stubble, coarse manure or in turning under a green crop 

 for manure. When this is used with the drag chain in the 

 furrow very long weeds can be -completely laid under the 

 surface, leaving the ground in excellent shape. 



Plow with jointer. 



"When sod ground is to be plowed deep and left in shape 

 for immediate pulverizing to fit it for crops this tool will 

 often render excellent service by cutting out a section of 

 the sod, turning it into the bottom of the furrow, where it 

 will be completely covered, at the same time leaving the 

 upper edge of the furrow slice composed only of compara- 

 tivelv loose earth. 



