. Better farming with Atlas farm powder, the safest explosive, the original farm powder. Explosives in agriculture. Powder Facts—Properties and Appearances Dry batteries can be used to fire a single charge at a time, provided the cells are fresh and full strength. Wet bat- teries and generators of automobiles can be used to fire single charges in emer- gencies. Electric light or power cur- rent can be made to fire almost any number of charges. Write us and our Service Division will give you full di- Connecting the wiring with blasting machine. The electric fuze wires are connected t
. Better farming with Atlas farm powder, the safest explosive, the original farm powder. Explosives in agriculture. Powder Facts—Properties and Appearances Dry batteries can be used to fire a single charge at a time, provided the cells are fresh and full strength. Wet bat- teries and generators of automobiles can be used to fire single charges in emer- gencies. Electric light or power cur- rent can be made to fire almost any number of charges. Write us and our Service Division will give you full di- Connecting the wiring with blasting machine. The electric fuze wires are connected together in series and the outside wires of the end fuzes are connected to the leading wires and these to the blasting machine. Equipment Required, Besides the electric blasting ma- chine or connection from a power or light wire, electric firing re- quires fuzes, connecting wire and leading wire. The latter is heavy insulated copper wire intended for carrying the current from the machine to the blast, and should be long enough to permit the operator to stand in a safe place—usually 250 feet from blast is con- sidered safe. Duplex leading wire, the most convenient form, has two insulated strands of wire wrapped together in a third insulating layer to form one big strand. Single leading wire must be doubled for use, hence must be twice as long as double wire. Connecting wire is lighter copper wire than that just described, and has thinner insulation. It is intended for connecting in a series the different fuzes in the charges making up a blast. Electric fuzes are copper shells or tubes, like blasting caps, made with two wires 4 feet long attached to them. The pic- tures on page 127 show all these articles plainly. Wire Connections for Electric Firing. When a blast- ing machine is used, which will be for nine-tenths of all electric firing, the charges must be connected together in a series. That is, each charge must be connected to another one, and so on until all to be fired t
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectexplosi, bookyear1919
