218 



FELLING AND CONVERSION. 



This pole is fixed into the tree aud then the other end is 

 placed on a grooved board and lifted from groove to groove by 

 two iron levers. In this way the tree is gradually pushed over, 



Fir.. 117. 



the action being most effective when the pole is at an angle ot 

 about 45 with the board. 



The great weight, about 5 cwt., of this machine has prevented 



Fig. ns. 





its coming into general use, but Draudt has constructed one of 

 only half that weight, and Laubenheimer has substituted for the 

 grooved plank an endless iron screw, on which a car supporting 



