Popular Science MonlhJy 



441 



the pipe above the bolt. From his 

 position on the platform, the erector ciin 

 easily raise the pipe hand over hand 

 until it is high enough to couple on to 

 the second section in the manner shown 

 in Fig. 5. The two coupled sections are 

 then raised until the coupling is just 

 above the collar, where they are tempo- 

 rarily suspended by a hook inserted in the 

 bottom pipe, and the second set of three 

 guy-wires attached. 



Handling the Guy-Wires 



From this point on it will be necessary 

 to enlist the services of neighbors to hold 

 and pay out guy-wires. The two 

 sections are raised in the same manner 

 high enough to couple on the third sec- 

 tion. After this it will be necessary to 

 resort to block and tackle. A good way 

 to use this is shown in Fig. 8, in which it 

 should be noted that the temporary arm, 

 made of two 5-foot pieces of 2-inch by 4- 

 inch, straddles the pipe and is securely 

 guyed in its position at the rear. 



platform supports and the timber as in- 

 dicated. A rope hitch around the i)ipe 

 serves to lower it gradually into the hole, 

 after which the guy-wires are trued u[3 

 and the mast is complete. 



In Fig. 4 is shown how the guys may 

 be spread in si.x directif)ns. It will be 

 found very desirable to break the guy- 

 wires up into short lengths to prevent 

 absorption of energy. Ordinary porce- 

 lain knobs are quite satisfactory for this 

 purpose. Buried logs make excellent 

 guy anchors ; they should be set well 

 out from the base of the pole. 



The Mast Will Resist Storms 



This makes a strong, serviceable, neat- 

 appearing mast. The writer has one, 

 erected over a year ago. Standard coup- 

 lings instead of pipe sleeves are used be- 

 tween the joints, which support a heavy 

 200-meter aerial made of No. 9 solid 

 copper wires. It has successfully with- 

 stood several 60-mile squalls, besides 

 some exceptionally heavy sleet storms. 



The pressure brought to 

 bear on the arm is all down- 

 •ward, and a few nails 

 through a block between 

 the members will hold it in 

 place temporarily. Tackle 

 is rigged between this arm 

 and a single block in the 

 bottom of the pipe, and the 

 three sections of pipe are 

 easily raised. The third set 

 of guy-wires is to be at- 

 tached as soon as the last 

 joint gets above the collar. 



Bolting the Pipe in Place 



The bottom of the pipe 

 is fastened to the side of the 

 pole at the height of the 

 platform, by resting it on 

 the block shown in Fig. 6. 

 This may be of 6-inch by 

 6-inch cypress, 2 feet long, 

 and is hollowed out on 

 the side next the pole to 

 receive the pipe as shown. 

 It is securely bolted to the 



Fig. 8. Showing Rigging of 

 Temporary Arm for Final Lift 



Top View of Temporary Arm 

 This Arm Straddles the Pipe 

 Securely Guyed at the Rear 



The design herein 

 set forth is of course 

 flexible, and the build- 

 er can easily add an 

 additional 20-footsec- 

 tion of pipe if desired. 



The round pipe of- 

 fers much less resist- 

 ance to the wind than 

 wood timbers of equal 

 strength, and as it is 

 well insulated from 

 the ground, there is 

 little or no loss from 

 this cause. 



It would be well to 

 pro\ide a grounding 

 switch for lightning 

 protection on the side 

 of the timber near the 

 ground, connected 

 with the pipe by a 

 heavy copper wire, 

 Init this is not abso- 

 lutely necessary. 



