LOGGING IN THE DOUGLAS FIE EEGION. 



81 



Logging engine sleds. — For protection and convenience in moving, 

 logging engines are mounted on well constructed sleds (Fig. 14). 

 The more rigid and well secured such a sled is, the more aid it 

 is in preserving the alignment and durability of parts. Sleds are 

 equipped with heavy rings, chains, bolts, etc., for moving, snubbing, 

 etc. They vary in length, ranging from 30 to 60 feet for both yard- 

 ing and reading engines. 



The total cost of these sleds ranges from $300 to $600. One 60-foot 

 sled cost $600, $309 of which was expended for labor. It is esti- 

 mated that 15,000 feet of No. 1 logs and 1 ton of iron were used in 

 its construction. The runners were hewn on three sides. The total 

 cost of building a 42-foot sled amounted to $293. This sled con- 

 tained 11,000 feet of No. 1 logs, which were valued at $114. The 

 labor cost of building three 40-foot 

 sleds amounted to $612, which is 

 at the rate of $204 per sled. 



The life of sleds varies with the 

 character of the sled and of the 

 country, the way moving is ac- 

 complished, and the size of the ma- 

 chine. As a general thing it ranges 

 between three and four years. 



Fair-leaders. — In the case of 

 narrow drum yarding engines, 

 where a true lead is necessary on 

 the drums, one main line and one 

 trip line fair-leader are mounted 

 on the front end of the logging engine sled. They are made in a 

 number of different designs. Figure 21 shows a main line fair-leader 

 which is adapted for extra heavy service. It weighs 1,220 pounds 

 and is sold for $100. Figure 31 shows a trip line fair-leader which 

 is adapted for a |-inch line. It weighs 246 pounds 'and costs $50. 

 A larger fair-leader of this type may be used for the main line. 

 One adapted for 1-inch or 1^-inch line weighs 675 pounds and 

 costs $100. 



Spark arresters. — In the States of Oregon and Washington the 

 use of spark arresters under certain conditions is compulsory from 

 June 1 to October 1, the Oregon law, which is substantially the 

 same as that of Washington, reading : 



From June 1 to October 1 of each year it shall be unlawful for any person, 

 firm, or corporation, or employee thereof, to use or operate any locomotive, log- 

 ging, engine, portable engine, traction engine, or stationary engine using fuel 



61361"— Bull. 711—18 6 



Fig. 31. — Trip line fair-leader. 



