Chap . XIX. The Four-coutter V Plough. 3 c f 



Note* That the fhortening of the Chain does alfo a 

 little incline the Point of the' Share towards the Left* 



Fig. 20. is the Iron-wilds. The Leg A is of one 

 Piece with that which has the Notch, and that pafTes 

 thro' the Leg B by the Loop at a\ both which Legs 

 pafs thro' the Box, and are pinned in behind it, by 

 thecrooked Pins C, D. This Figure is feen with its 

 Crooks on it* both in Fig. 1. and Fig. 2. Note y 

 That the Holes in the Box, thro' which thefe Legs 

 pafs, mufl not be made at right Angles with the Box $ 

 but mull incline upwards, fo that the Fore-part of 

 the Wilds may be higher than the Hinder-part, or 

 elfe the Upper-part of the Crow-ftaves would ieaa 

 quite back when the Plough is drawn. If the Beafts 

 that draw immediately next to the Plough be very 

 high, their Traces muft be the longer -, elk they ai>l 

 the Wilds making too fmall an Angle with the Tow- 

 chain at the Box, when they draw hard, the Wheels 

 will rife from the Ground, and be apt to overturn : 

 This Angle I fuppofe fhould not be lefs than of 160 

 Degrees* and the Angle made by the Tow-chain or 

 Traces that are drawn by the Cattle that go before 

 them, will make an Angle with the Tow-chain at 

 the Box yet much more obtufe. The Ufe of thefe 

 Notches in the Wilds is, to give the Plough a broader 

 or narrower Furrow : If the Links are moved to the 

 Notches on the right Hand, it brings the Wheels 

 towards the left Fland, which gives a greater Furrow ; 

 and when the Links are moved towards the left 

 Hand, it gives a lefs Furrow, by bringing the Wheels 

 towards the right Hand. 



The Diftance betwixt the Two Legs of the Wilds 

 is Eight Inches and an half* the Length of the Legs 

 is Nineteen Inches. They muft be of convenient 

 Strength. The Links being placed in Notches diftant 

 from one another, prevents one Wheel fromadvance- 

 ing before the other -> which would happen, if the 

 Links were both in One Notch, or in Two adjoining 



X Notches, 



