66 himVTES OF 



O/i the tunslruclioii of a Sward-Dresser. 



DISSERTATION III. 



On the Construction of a Sward-Dresser, 



• / 



Platk -I. VP' J .rrir- T r- • • ' 



Pig t, JL LATE I. Fig. 1, is a perspective view of the whole machine. 



A A. the outer side frames, six feet long, and twelve by three inches square, 

 shaped as per figure. 



B. the coulter bar, five feet eight inches long, and four by three and ^ half 

 . inches square, outside measure. Set off one and a half inches from each &ide frame, 

 and divide the remainder (which is fifty-seven inches) into nineteen equal parts^ 

 in which fix nineteen coulters for scarifying the sward. 



C C C C. are four bars, five feet eight inches long, and three and a half by 

 two inches square, for bracing the side frames together, and lor fixing 

 the thorns which brush the sward after it has been scariiicd, as per ligure. 



D D. are two pieces of ash wood, three inches square, and about iorty inches 

 long, for sledging the machine from one field to another. 



E. the chain by which the whole machine is drawn with two horses abreast. 

 Fig. 2. Tig. 2. represents one of the coulters which is ten inches long (but here 



it is only eight Inches,) one and a quarter inches broad, and three-eights of an 

 inch thick for three and a half inches within the wood of the coulter bar, below 

 which, the fore edge is made sharp for cutting the sward. 

 *'S-3. -piQ 3^ represents the screw bolt which regulates the depth at which the 



coulters scarify, &c. 



a a, two iron plates twelve inches long, and three by a quarter of an inch 

 Square* 



