598 IMPROVEMENT OF

if the horfe fwerve from a ftraight line, or is purpofely made to pafs obliquely to avoid treading on the rows of corn in hoeing; the per- fon, who guides the plough behind, may keep the coulters of the ploush or hoe in any line he pleafes; which is thus performed with much fimpler mechanifm, than that ufed in Mr. Cook’s patent plough for the fame purpole, whach has many joints like a parallel rue:

bb are the horns or fhafts behind, for the perfon who guides the drill coulters or hoëes; they are fixed to the axle-tree before, and have a crofs piece about fix inches from it at g g for the purpofe of fupporting the feed-box defcribed below. Behind this about à foot diftant from it is another crofs piece at cc, called the coulter-beam, which is fifty inches lons, fix inches wide, and two inches thick; it is perforated with two fets of fquare holes, fix in each fet, to re- ceive the coulters in drill-ploughing, and the hoes in horfe-hoeinc.

The fix light fquare holes are nine inches from each other, and are to receive the coulters or hoes in the cultivation of wheat, the rows of which are defigned to be nine inches from each other, and the fix dark fquare holes are placed feven inches from each other to réceive the coulters or hoes for the cultivation of barley, the rows of which are defigned to be but feven inches diftant from each other.

Befides thefe there are fix round holes through this coulter-beam “at one part ofit, and fix iron circular ftaples fixed into the edge of the other part of it; thefe are to receive the ends of the tin flues, which crofs each other, and convey the feed from the bottom of the feed-box into the drills or furrows, when the coulters are difpofed in the fquare perforations before them.

Thefe coulters or hoes the perfon, who guides the machine, can raife out of the ground'in turning at the ends of the lands, or in paf- ing to or from the field, and can fufpend them fo raifed on the iron fprings dd, which at-the fame time fo fixes the fhafts to the axle-

tree