14 



FELLINCx AND CONVERSION. 



The hook is sometimes merely fastened to a rope, and may 

 be attached to a branch by a man climbing the tree. This 

 Fig. ]0:'. 



plan can be employed only in the case of tall slender stems, as 

 climbin<,^ trees to attach the hook wastes too much time. 



(b) Machines for removing Stumps. — In order to save much 

 of the labour involved in using the tools 

 just described for grubbing-out roots, 

 various machines have been invented for the 

 purpose. Of numerous modern inventions 

 only the Hawkeye machine, the forest-devil, 

 the kant-iron and lever, Wohmann's machine 

 and the screw-jack will be described. 



The Hawkeye Machine (fig. 11'2) consists 

 of an iron vertical axle fixed on a firm 

 support, moving in sockets placed above 

 and below it, and surrounded by a drum c. 

 This drum can be firmly attached to the 

 axle, or loosened from it by means of the 

 lever h. The axle with the drum attached 

 is set in motion by a horse moving the shaft 

 a, and thus a flexible steel rope 160 feet 

 long which is attached at one end to the drum may be wound 

 round the latter. The rope passes round the pulley n, which is 

 attached to a powerful hook fixed to the stump E to be 



