Fuse is put up in a double roll, one fitting inside the other each 50 

 feet long. Each double roll of 100 feet is wrapped separately. It is 

 packed for shipment in wooden cases containing from 500 to 6,000 feet 

 and in barrels containing 8,000 to 12,000 feet. 



Dupont Cap Crimpers 



Du Pont Cap Crimpers are 

 necessary wherever blasting is 

 done with fuse and blasting caps. 

 Without a cap crimper it is im- 

 possible to attach the blasting 

 cap securely or safely to the fuse. FIG. 90. DU PONT CAP CRIMPER 



The Du Pont Cap Crimper has in 



addition to the crimping jaws, which make a water-tight crimp, two 

 shears for cutting fuse and a straight arm to make the hole in the 

 cartridge for the insertion of the blasting cap. 



Victor Electric Fuzes 



Victor Electric Fuzes are made in three strengths Nos. 6, 7 and 8 

 with two copper wires 4 feet, 6 feet, 8 feet and so on up to 30 feet in 

 length. For work on the farm the No. 6 strength is sufficient. Victor 

 Electric Fuzes, like blasting caps, can be exploded by shock or heat, and 

 therefore must be handled in exactly the same way. The same precau- 

 tions regarding storage and handling as given for blasting caps should 

 be strictly observed. Never attempt to pull the wires out of their setting 

 or investigate the contents of Victor Electric Fuzes. 



FIG. 91. ELECTRIC FUZE CROSS SECTION 



"A" is the shell of copper, having a corrugation thrown out from the inside, which holds 

 the filling material more firmly in place; "B" is the chamber containing the explosive charge; 

 "C" the insulated copper wires entering the cap ; "D" the bare ends of the copper wires projecting 

 through the plug into the charge; "E" the small .platinum wire or "bridge" soldered to and 

 connecting the two ends of the copper wiies, which is heated by the electric current; "F" the 

 composition plug holding the fuze wires firmly in place; "G" the filling material. 



Electric fuzes have two insulated copper wires sealed in the cap. 

 The tips of these wires inside of the cap are bare and joined together 

 by a platinum wire finer than a thread. When the electric current passes 

 through the electric fuze it makes the platinum wire hot enough to 

 detonate the explosive in the copper cap. 



Besides the advantageous properties of the No. 6 Blasting Caps, as 

 enumerated, No. 6 Victor Electric Fuzes reduce the chances of misfires, 

 save time, eliminate delayed or premature explosions and in a good many 

 instances, such as in stump blasting, save dynamite. 



113 



