Chap. XXI. Of the Wheat-Drill $6f 



This Piece, from d to ?, muft be of fuch a-Thiclc- 

 nefs, that the Standard, bearing againft its Infide b c> 

 may be equidiftant from each Board, to which this 

 Piece is fattened. The Part, or fore Side of this 

 Piece f g 9 muft be the Length of the Diftance be- 

 tween Board and Board, to which it is fattened ; and 

 that is exactly Four Inches. Its Thicknefs and Depth 

 muft be fuch as may make it ftrong enough for the 

 Purpofes intended: 



The Piece marked Fig. 19. is the Oppofite of the 

 former, and to be placed in the fame manner, and 

 as it is feen marked G in Fig. 15. observing always, 

 that the Part of it, which holds the Hopper from 

 moving end- ways, muft always be on the Infide of 

 the Standard •, for, if thefe Pieces mould bear againft 

 the Outfides of the Standards, the Hopper could have 

 no Play upon them, nor could either of the Wheels 

 rife up without raifing the Share (that was next to it) 

 out of the Ground •, but, being thus placed, either 

 Wheel may rife without the other, and without rail- 

 ing the Share. 



I fay more of this, becaufe it is a Point wherein 

 young Workmen are apt to miftake. 



Thus having fhewn, in Fig. 15. how the Hopper 

 is guided and drawn at the lower Part, I come next 

 to fhew how it is held and drawn at its upper Part ; 

 for which the Piece of Wood, Fig. 20. being a com- 

 petent Breadth and Thicknefs, Four Inches long, is 

 fixt in between the Boards with Nails or Screws-, and 

 is H in Fig. 15. The Standard patting up betwixt 

 this and the fore Side of the Hopper, its fore Surface 

 bearing againft this Bar, and its hinder Surface againft 

 the Hopper •, fo that the Hopper may rife and frnk 

 eafily upon the Standard at Top, being in the Middle 

 on the fore Side of the Hopper ; there will be an equal 

 Diftance of each Side, for either Wheel to rife, with- 

 out the Standard ftriking againft the Sides of the 

 Hopper to hinder its rifing. There is another Bar 



equal 



