236 Report on Trials of Plows. 



iron strap are headed with a clip which embraces their whole cir- 

 cumference and correspond with them in form. Above the beam 

 the sides are trimmed off on the edges so as to give them a well 

 marked convexity. 



The right handle is bolted by two bolts, 6 inches apart, to the 

 mould-board. A half inch wrought iron brace rod, 15 inches 

 above the bolt, which fastens the iron strap to the land side, 

 passes between the handles, and is 1\ inches long. Another iron 

 brace rod, curved upward in the middle and having a screw cut 

 upon both ends, passes through the beam and both handles; each 

 end is secured by two nuts, one on the outside, the other inside, 

 thus resisting both outward and inward pressure. It is 10| inches 

 in length, and is 11 inches above the first one measured on the left 

 handle, and 14 inches measured on the left one. A third brace rod 

 of wood, 15 inches above the last one, as measured on the left han- 

 dle, and 17^ inches on the right handle, is 18 inches long, measured 

 as the others have been on the inside of the handles. One inch 

 above this is a quarter-inch iron rod, which passes through both 

 handles, and is secured by a nut on the left one. The distance 

 between the tips of the handles is 28 inches, and as we have 

 before stated, the tip of the left handle lies 3| inches to the left 

 of the plane of the land side, the tip of the right handle must 

 lie 24^ inches to the right of that plane. Both handles are made 

 from wood. 



Beam. 



The beam is made of oak wood. Measured along the top, in 

 conformity with the curves, it is 5 feet 7^ inches long. Measured 

 in a straio-ht line, it is 5 feet 6 inches Ions;, 



The following measurements, made vertically from the base 

 line to the top of the beam at the points indicated, will give a 

 tolerably di-stinct idea of its curves: 



Inches. 



From base line to extreme rear end of the beam 18 



). From base line to the point where the front edge of the left handle passes 



! through the beam 44 



In advance of the preceding measurement 19 g 



From base line at 1 foot in advance of first measurement 211 



From base line at 2 feet in advance of first measurement, which corre- 

 sponds with the rear edge of the standard 22>\ 



From base line at 3 feet in advance of first measurement 221 



From base line at 4 feet in advance of first measurement 20-8 



From base line at 5 feet in advance of first measurement 18s 



From base line at the extreme fi'out of the beam I84 



