202 



FELLING AND CONVERSION OF TIMBER. 



strong rope may be used instead of most of the length of B, as long 

 as there are sufficient links in the chain for working the lever. 

 Another method for extracting stumps is shown in 



Fig. 138. Lever and hook. 



Figs. 137, 138, by means of a lever with a sliding ring and 

 kant-iron or hook. 



Wohmann's machine for pushing down trees is shown in 



Fig. 13!). Wohmann's machine. 



Fig. 139. It consists of a long coniferous pole with an iron 

 spike at one end, and at the other end it is bored, as shown in 

 Fig. 140, to admit a short iron bolt. 



