198 



LOGGING 



One end of the main cable is passed around the tail tree at a 

 height of 25 or 30 feet and is then carried to a stump or tree in 

 the rear to which it is made fast. The tail 

 tree is braced with this cable and also with 

 an additional guy rope. The other end of 

 the main cable terminates in an eye near 

 the head spar tree and is connected, by 

 means of a clevis, to an extension cable 

 which passes through a block attached to 

 the head spar tree. The extension cable is 

 fastened to a stump in the rear by a "block 

 and fall" attachment, by which, with the 

 aid of a drum on the engine, the main cable 



TAIL TRFE 



Fig. 53. — a Tail Tree . . 



showing the Method of IS tightened. 



attaching the Blocks The head spar tree is also braced by cables 



to the Tree; also the ^s shown in Fig. 54. 



Arrangement of the ^. „ ... , , , ■, r , 



Qyyg Ihe trolley which travels back and forth 



on the main cable is operated by an out- 

 haul cable and a skidding line. The outhaul cable is f- or 

 |-inch in diameter and passes from a drum on the engine, 

 through a block in the head spar tree, through the trolley 

 and also through a block on the tail tree, after which it is 

 brought back and attached to the rear of the trolley. It serves 



Held Spar Tree 

 Loodiog Cable M, l'"'" C»l>'« 



/ Oolhaul Rop, 



Lo.dbgC.,r -".--'^ ■' / =. -- 



By permission of the Lidgertvood Mfg. Co. 

 Fig. 54. — A Cableway Skidder showing the Arrangement of the Lines 

 for Skidding and Loading. 



to draw the trolley out along the main cable. The f- or 

 |-inch skidding line passes from a drum on the engine, through 

 a block on the head spar tree, then through a block on the 

 trolley. It serve_ as a point of attachment for tongs or other 



