82 



METHODS OF COMMUNICATION FOR FOREST PROTECTION 



available, on a barge or raft. This is done by inserting a steel bar or pipe in the hole in 

 the middle of the reel and supporting it at each end so that the reel will revolve easily 

 on the bar. A brake by which it may be stopped should be improvised. The end of the 

 cable should then be made fast to the shore and the boat run across to the other landing 

 at a slow speed. Two men should tend the reel and see that the cable comes off evenly. 

 Where any great irregularities in the profile of the bottom are known to exist special 

 care -should be taken to ensure that the cable lies on the bottom throughout its length 

 and that there are no unsupported spans. 



Section 67 Connecting Forestry Branch Lines with Private Lines or Exchanges 



Whenever it is desirable to connect a Forestry Branch line with a private line or 

 exchange, the district inspector should first be fully advised by letter as to what ar- 

 rangements can be made for the connection, including a statement of the ability to 

 obtain night, Sunday, or holiday service, if needed in emergencies. There should also 

 be stated the length of the Forestry Branch line, and, in cases where it is desired to 

 connect directly to another line, the length of such line; the character of its construc- 



f?ejL//ar /ron -f/e , 

 M-ain fine 



Use test clomp here 



Ga/v /'ron 



_ . tc/. of branch //'n e 

 enough offer cfeacf encf/no~ 

 on /nsu/crfor- X fo GOnnccrfo 

 //ne cr-s shown 



Fig. 38 Method of connecting branch line to main line when both are galvanized-iron wire 



tion and maintenance ; the sizes and kinds of wire used in the construction of both lines, 

 and whether one or both are grounded or metallic circuits; the number of instruments 

 on both lines and the ohm capacity of the instruments on the line with which connec- 

 tion is to be made. The district inspector will decide the best method of handling the 

 matter and making the connections. Every precaution should be taken to make sure 

 that trouble originating beyond the Forestry Branch line will not interfere with it. 



Section 68 Branch Lines 



1 METHOD OF CONNECTION 



In attaching a branch to a main line, the former should be dead-ended on a separate 

 bracket attached to the main line pole for that purpose, so that the strain of the branch 

 line will not come on the connection (Fig. 38). A Fahnestock test-clamp may be used 

 to connect the branch line to the main line instead of wrapping the end of the branch 

 to the latter. The Fahnestock test-clamp is made in three grades : Entire clamp fully 



