3 o& The- Fcur-ccidterd Plough. Chap. XIX ^ 



Notches, except they were middle Notches r TheSr 

 Links are each Six Inches and an half long. 



E is the Ring, by which the Two Links, and the- 

 Two Crooks F and G, are held together, and oa 

 which they all move. 



The Height ©f the Wheals in Fig. 2. The left- 

 hand Wheel is Twenty Inche3 Diameter ^ the Dia- 

 meter of the right Wheel is Two Feer Three Inches;; 

 die Diftance the Wheels are fet from each other at the 

 Ground, is Two Feet Five Inches and an half-, the 

 Crow- (laves are One Foot Eleven Inches high, from 

 the Box to the Gallows; they both ftaod perpendicu- 

 lar to the Box, and the Diftance between the Crow- 

 ilaves is Ten Inches and an half. The Pillow is pin- 

 ned up at its Ends by Two fmall Iron Pins, which 

 ase chained to it, that if they drop, they may not be 

 .loft. Thefe appear in Fig. 1. and Fig. 2. The 

 Height from the level Surface,, up to the Flole in the 

 Box, where the Tow-chain pafTes through it, is Thir- 

 teen Inches (being Two Inche3 below the Holes, of 

 the Wilds, on the Hinder-fide of the Box) ; the 

 Height at the other End, where the Crook of the 

 Collar takes hold of the Pin in the Beam at r, in Fig* 2* 

 is Twenty Inches high above the fame level Surface ,. 

 and (hews how much the Chain defcends forward, for 

 drawing down the Plough, and by which Defcent 

 may be known what An^le the Chain would make 

 with the Surface, if it were produced forwards in a: 

 ftrait Line; which is a thing material for the good 

 going of a Plough ; and fo is the Angle the Tow- 

 chain makes with the Beam : About the Middle of 

 this Tow-chain, there fhouid be a Swivel, whereby 

 cne End of the Chain may turn without the other. 



•When this Four coulter Plough is made, I would 

 advife, that it be tried with only the fait Coulter, be- 

 fore the other Three are pot in ; for if the Plough' 

 does not go well with One Coulter, it is not likely it 

 ihouid go well with Four; and I never yet have leen 



or. 



