DRILL MACIILNES. 



" It has a manure hopper, a, and a 

 seed hopper, b, the same as the oth- 

 er; but tlie manure, in place of being 

 dropped along with the seed, is de- 

 posited in a deep gutter made by a 

 coulter, c, which goes before ; this 

 manure is covered by a pronged coul- 

 ter, d, which follows the other ; next 

 comes the coulter which forms the 

 gutter for the seed, c. The seed is 

 thus deposited about one inch above 

 the manure. One roller of the con- 

 cave kind goes before the machine, 

 and another light one of the common 

 kind follows after it ; or, without at- 



tached rollers, the drill may be affixed 

 to one side of the common roller, be- 

 hind, which roller may prepare one 

 drill and cover the seed sown on an- 

 other each course." 



The deposite of seed in this and 

 the best drills is managed by a re- 

 volving axis, turned by a cog-wheel, 

 which fits into a wheel on the axis 

 of the large wheel,/. 



Morion's graiyi drill, for three or 

 five furrows, is shown in Fip- 7. The 

 following is Loudon's account of this 

 machine : 



" It is decidedly the simplest and 



Fisr.7. 



best of grain drills. In this machine 

 three hoppers are included in one 

 box, the seed escaping out of all the 

 three by the revolution of three seed 

 cylinders upon one axle ; and drills 

 of different breadths are produced 

 simply by the shifting of a nut, that 

 fixes a screw moving in a groove in 

 the under-frame, by which the dis- 

 tance between the two outside con- 

 ductors and the central one (which 

 is fixed) can be varied from nine to 

 ten or eleven inches ; and that the 

 two small wheels may always be at 

 the same distances respectively as 

 the conductors, there are two wash- 

 ers (hollow cylinders), an inch in 

 breadth, on the axle-arms of each, 

 which may be transferred either to 

 the outside or inside of the wheels, 

 so as to make their distances from 

 the outside conductors nine, ten, or 

 eleven inches respectively also. The 

 small wheels may be raised or de- 

 pressed, so as to alter the depth at 

 which the seed shall be deposited, by 

 the action of a wedge, which retains 

 242 



the upright part of the axle in any 

 one of a number of notches, which 

 are made similarly in both, and which 

 are caught by an iron plate on the 

 upper side of the arms which carry 

 the axles. This machine may be still 

 farther improved by increasing the 

 number of conductors to five instead 

 of three, the latter number giving too 

 light work to the horses."' — {Highland 

 Soc. Trans., vol. vii.) 



Cooke's grain drill is seen in Fig. 

 8. It has been long employed with 

 Fig. 8. 



ik 



