LOGGII^G IN THE DOUGLAS FIR REGION". 



145 



near the railroad and the other end was taken up the hill, passed 

 through a block suspended to a guyed tree about 25 feet from the 

 ground, and made fast to a stump. Two stops (fig. 50) were clamped 

 on the standing line, one at the top where the logs were picked up, 

 the other at the foot where the logs were landed. 



A carriage of the design shown in figure 50 was used, the snubbing 

 line leading through it to the load. 



A 10 by 12 inch wide-drum yarding engine, on which an extra 

 wide brake had been installed, was set at the top of the slope and 

 used to lower the logs. 

 Any friction drum engine 

 with braking power suffi- 

 cient to hold the load can 

 be used. A three-drum en- 

 gine could be used both to 

 yard and lower the logs. 

 To get the full capacity 

 out of the system, however, 

 one should use a separate 

 engine with a special brake 

 drum. 



The load was hooked on 

 the end of the snubbing 

 line (fig. 51) and hoisted 

 till a ball fixed on the 

 snubbing line just above 

 the hook engaged in a 

 catch in the carriage. This 

 catch held the load up. 

 The snubbing- drum fric- 

 tion was then thrown off 

 und the load was snubbed to the landing place. At this point the 

 carriage came in contact with the stop on the lower end of the line. 

 This stop held the carriage and freed the snubbing line, allowing 

 the load to be lowered to the ground. When the load was unhooked 

 the signal was given to return the carriage to the woods. The ball 

 on the snubbing line again came in contact with the catch of the 

 carriage, releasing the carriage from the stop. 



The following crew was used to operate the snubbing device : 



1 engineer. 



1 fireman. 



1 wood buck (half time). 



1 hooker on. 



61361°— Bull. 711— -18 10 



Fig. 51. — Method of hooking load, Nestos overhead 

 snubbing system. 



