f 



€00 



IMPROVEMENT OF 



rmgs at one end inftead of perforations, as at w w, Plate X. Fig. i. 

 Thefe tin flues deliver the feed at the time of fowing into the fmall 



furrows or drills, which are made by the coulters before them 



Thefe feed-flues have a joint 



A> 



> 



wh 



par 



of th 



e tin 



tubes Aides into the other part, and they by thefe means can be occa- 

 fionally fliortened or lengthened to accomodate them to the coulters, 

 when placed at feven inches diflance for fowing barley, or at nine for 



fowing wh 



At the bottom of this feed-box are fix hoi 



each 



to 



deliver the corn into the excavations of the cylinder, which revolves 

 beneath them. Thefe holes are furnifhed on the defcending fide, as 



■ 



the cylinder revolves, with a flrong brufli of briftles about th 



fourths of an inch 



which prefs hard on the tin cylinder 



On 



the afcending fide of the revolving cylinder the holes at the bottom 

 of the feed -box are furnifhed with a piece of ftrong (hoe-foal leather, 

 which rubs upon the afcending fide of the cylinder. }3y thefe means 

 the corn, whether beans or wheat, is nicely delivered, as the axis re- 

 volves, without any of them being cut or bruifed. 



€on/fru^ion of the iron axis and wooden cylinder beneath ihe feed-box-, 



Plate XI. Fig. 3. 



An iron bar is firft made about four feet fix inches in length, and 

 an inch fquare, which ought to weigh about fifteen pounds ; this bar 

 is covered with wood, fo as to make a cylinder four feet long, and 

 two inches in diameter, as at I k, Plate XI. Fig. 3. 'The ufe of the 

 iron bar in the centre of the wood is to prevent it from warping, 

 which is a matter of great confequence. 



This wooden cylinder pafles beneath the bottom of the feed-box, 

 and has a caft-iron cog-wheel at one end of its axis, as at r r, which 



is. one fourth of the diameter, of the correfpondent caft-iron wheel, 



which 



