88 



ADDENDA TO TREE- FELLING MACHINES 



ADDENDA to pages 12 and 13. 



TREE-FELLING MACHINES. 



A hydraulic tree-felling machine has been invented by Forester Stendal, and is being placed on the 

 market by Albert Doering Manufacturing Company, Sinn, Hessen- Nassau, Germany. The Biltmore Forest 

 School had a chance to see the machine in operation at a time at which this book was in the press. 

 The appliance, illustrated by the cut here shown, seems important enough to justify its consideration. 







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Hydraulic tree felling machine in operation. Dcering Mfg. Co., Sinn, Germany. 



The machine consists of: — 



1. A Mannesmann steel tube, containing a leather piston and a wooden forcing beam, ending in 

 a pair of claws, to be placed against the tree. 



2. A hydraulic hand- pump, on wheels, connected with the tube by an aluminum -wired rubber hose. 

 In felling heavy trees, several tubes may be applied simultaneously to good advantage. In lieu of a 



hand-pump, a small gasoline engine can be used. The weight of the outfit, without the wooden beam, 

 is 520 lbs.; the price is #125-00. This hydraulic tree feller is the only machine on the market capable of 

 throwing large trees, without requiring the main roots to be severed on that side of the tree towards 

 which it falls. Where it is intended to convert the forest into farms, the use of this machine is to be 

 commended. 



