POWER SKIDDING 



199 



skidding devices. The logs are dragged up to the main cable 

 by this line, which also suspends them and serves to return the 

 trolley to the head spar tree. 



When the trolley is run out from the head spar tree, the 

 skidding line sags between the two points of support and its 

 weight pulls the tongs against the trolley. The line is either 



Fig. 



- Cutting the Top from a Head Spar on which is placed the Main Cable 

 Rigging for a Cableway Skidder. Cypress Forest, Louisiana. 



pulled down and dragged by hand to the logs to be skidded, an 

 operation requiring the services of 5 or 6 men and involving a 

 loss of time for the entire crew, or a patent slack puller is used 

 which draws the slack out of the skidding line. A third f-inch 

 cable is required for operating the slack pulling device. 



Power for operating the cableway system is provided by an 

 upright boiler and a pair of engines mounted on a steel frame, 



