230 Report on Trials of Plows. 



The Share^ 

 Fig. 114, n (outside), Fig. 116, g, (iusicle view), is made of cast 

 iron, and forms part of the land side and part of the mould-board 

 side of the plow. Its length on the land side is 9 inches; length 

 of point, 2 inches; length of share on the mould-board side, Fig. 

 116, a 5, measured from the point, over the feather, to its inter- 

 section with the mould-board, 16^ inches; width from land side 

 to the angle of the feather. Fig. 114, o, 10| inches; length of 

 feather, Fig. 114, o p^ Fig, 116, c cZ, 13| inches (measured on the 

 sole); width of point. Fig. 116, a a\ \\ inches. The feather 

 extends 2 inches beyond the edge of the mould-board to the 

 right, and is bolted to it by two bolts. Fig. 116, e/", secured by 

 nuts. At the line where the mould-board meets the share at the 

 breast its vertical height above the base line is 3| inches. At the 

 point where the upper surface of the mould-board meets the 

 share the height is 2 inches. Distance from the angle of the 

 feather to the lower edge of the mould-board is 3^ inches. The 

 land-side of the share begins to depart from the plane of the 

 land side towards the left from the point of its junction with it 

 at its fore end, at the point it stands \ of an inch more to the left 

 than the plane of the land side. The land side face of the share 

 slopes vertically inward towards the furrow side, in conformity 

 with the slope of the land side. 



The Land Side. 

 The sole of the land side, r. Fig. 115, is cast in a separate 

 piece, 1 inch deep and 2 inches wide at the rear end, and -^^ of an 

 inch deep and | of an inch wide at the front end. It receives the 

 lower edge of the land side plate on its upper surfiice. On tho 

 furrow side it has two semi-circular steps of li inch radius, e and /", 

 one being 6 inches and the other 21 inches in the rear of its foro 

 end, through which it is bolted to the land side plate. Through 

 these the sole is bolted to the land side plate, the heads being on 

 the outside and the nuts on the inside. The holes in the plate are 

 countersunk to receive the heads of the bolts, so that they lie in 

 its plane. The sole extends ^ an inch to the left of the plane on 

 the land side, at the rear end, running out to nothing on the front 

 end, where it joins the share. A straight edge, extending from 

 the heel of the land side to the point of the share, will form the 

 base of a triangle whose apex is at the point of junction of the 

 land side and the share, and whose altitude will be \ of an inch. 

 If the sole of the laud side is jiroduccd to the poiut, the end of the 



