192 



THE planter's guide. 



the subordinate parts. To the original implement I have 

 added, among the other improvements, three stages strongly 

 bolted to the cross-bar, or axle-bed, (as our workmen term 

 it,) and to one another, of which the upper stage is mov- 

 able at pleasure, as the extent of roots or branches may 

 require elevation from the ground. The third wheel, 

 which according to Brown's plan was diminutive, is en- 

 larged, and adapted to a different part of the pole. The 

 specification is as follows : — (See plate IV.) 



LARGE-SIZED MACHINE. 



The pole AB (fig. 1) is 15 feet long, including the 

 iron ring at the point ; 6 inches broad, tapering to 3i at 

 top ; and 5 inches thick. The iron ring at A is 4 inches 

 in diameter. At the top there is a small bend EC, (fig. 

 2,) 3 inches ofi" the straight, in order to prevent the bark 

 from being chafed by the ring. Immediately at the point, 

 but clear of the ring, is fixed a small block of iron at C, 

 with rounded edges, 4 inches long, by li inch thick, 

 well steeled, so as to trail along the ground, and to prevent 

 the point of the pole, when the machine is not loaded, 

 from cutting up the surface. There is likewise, on one 

 side of the pole, a plate of iron DC, extending from D, 

 within 18 inches of the axle, to nearly the top at E, for 

 the purpose of strengthening the pole. It is 2J inches 

 broad, f inch thick, and sunk into the wood. This 

 plate, for the sake of greater power, should be in one piece. 

 Its entire length is not visible in the diagram, owing to 

 the intervening delineation of one of the side-stays. 



The iron axle FG (fig. 1,) and also IK (fig. 3,) is 5i 

 feet long between the washers, (but is nearly covered by the 

 case,) and 3 inches square ; with a curve of 3 inches at 

 H, for the purpose of giving greater strength. It would 



