TELEPHONES 



457 



sas n 



® 



or braced to insure that they will not "give" and permit the 

 wires to become slack. This should be done before the wires 

 are attached to the poles, for if it is left until the line wires 



are pulled taut, it will be found that 

 some of the poles will have been drawn 

 out of alignment, and it will be too 

 late to correct this, since the tight line 

 wires will hold them in the positions 

 they have taken. For bracing, poles 

 somewhat shorter and lighter 

 than those supporting the 

 line wires are employed. The 

 brace is set into the ground 

 at the lower end, and the 

 upper end is shaped to fit 

 the pole, then attached to 

 it by means of bolts or lag 

 screws. Guys consist of 

 anchors buried in the ground, 

 and fastened to line poles at 

 a point near to where the line 

 wires are attached, by means 

 of galvanized strand wire. 

 An anchor usually consists 

 of a piece of timber with a 

 long galvanized eye bolt 

 through its center. The tim- 

 ber is buried in the ground 

 with the eye of the bolt projecting above the sur- 

 face of the ground. The end of the guy wire is 

 passed through this eye and drawn taut. 



Where only two wires are to be carried, it is 



J men (see 



customary to attach brackets to the poles by means chapter on 

 of wire spikes. Where more than two wires are to 

 be carried, cross arms equipped with pins are used. The 

 brackets as well as the pins are threaded to receive the glass 



mmM 



^fiSTTTeTTTS- 



Fig. 351. Pole with cross 



arm and ground brace — 



used on curves 



Fig. 352. 

 Metal an- 

 chor for 

 scr ew ing 

 into earth 

 and attach- 

 in g guy 

 wire {for 

 log and 

 plank an- 

 chor s or 

 "dead 



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