598 



IMPROVEMENT OF 



■ 



if the horfe fvverve from a ftraight Hue, 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 

 plough or hoe in any line he pleafes ; which is thus performed with 

 much (impler mechanifm, than that ufed in Mr. Cook*s patent 

 plough for the fame purpofe, which h-as many joiats like a parallel 



1-ule. 



hh are the horns or fliafts behind, for the perfon who guides the 



d 



coulters or 



they are fixed to the axle-tree before, and 



have a crofs piece about fix inches from it at ^^ for the purpofe of 

 fupporting the feed -box defcribed below. Behind this about a foot 

 diftant from it is another crofs piece at c c, called the coulrer-bearn, 



inches thick ; 



ach fet, to re- 



which is fifty inches long, fix inches wide, and two 



• 



It 



perforated with two fets of fqnare hoi 

 ; the coulters in drill-ploughing, and tl 



h 



uin 



horfe-h 

 h other, 



to 



d 



f 



h 



The fix light fquare holes are nine in( 

 to receive the coulters or hoes in the cu 

 of which are defiened to be nine inches from each other, and the fix 



J 



dark fquare holes are placed i^'J&w inches from each other to receive 

 the coulters or hoes for the cultivation of barley, the rows of which 

 are defigned to be but feven inches diftant from each other. 



Bcfides thefe th 



fix round holes throueh this coulter-beam 



o 



part of 



dfi 



Itaples fixed into the edge of 



th 



pa 



f 



thefe are to receive the ends of the tin fl 



which crofs each other, and convey the feed from the bottom of th 

 feed-box into the drills or furrows, when the coulters ar€ difpofed i 



the Iq 



u 



perforations before them 



r- 



hoes the perfon, who guides the mach 



can 



Thefe coulters or 



fe out of the ground in turning at the ends of the lands, or in pafif- 



tl 



from the field, and can fufpend them fo raifed on th 



fprings dd^ which 



the fame time fo fixes the (hafts 



th 



e 



axle- 

 tree 



I 



\ 



