217 



{)rocccd to give a delineation of the larger and smaller ma- 

 chines, used at this place ; to which shall be added one of an 

 intermediate size, chiefly intended for the use of such planters, 

 as do not choose to put themselves to the expense of more 

 than one sucli implement, and who do not mean to remove 

 trees beyond thirty feet high, and from twelve to fourteen 

 inches in diameter, at a foot from the ground ; which trees 

 this machine should be capable of managing. See engraving- 

 The diagiam here given relates to the pole, axle, and frame- 

 work of the machine, that is, to every part of it excepting the 

 wheels. The latter it was considered as unnecessary to de- 

 lineate in the diagram, as the entire " machine in motion" is 

 given in the view ; and any good carpenter can make the 

 wheels, on the dimensions being furnished to him. The 

 main difficulty in constructing an effective machine, lies in 

 proportioning the different parts to one another, and so adapt- 

 ing the whole to the style of work to be executed, that despatch 

 shall be promoted in the highest degree, and that the heaviest 

 work shall be executed, by means of the smallest possible 

 weight of wood and iron. 



These machines, as already said, are of the simplest 

 structure, and evidently borrowed from the Janker of the 

 wood-merchant.* The pole is made of the best oak, the 

 axle of iron, the wheels of oak, elm, and ash, as also the 

 subordinate parts. To the original implement I have add- 

 ed, among the other improvements, three stages strongly 

 bolted to the crossbar, or axle-bed, (as our workmen term it,) 

 and to one another, of which the upper stage is movable at 

 pleasure, as the extent of roots or branches may require ele- 

 vation from the ground. The third wheel, which according 

 to Brown's plan was diminutive, is enlarged, and adapted to 

 a different part of the pole. The specification is as follows : 

 See engraving. 



* Note II. 

 28 



