. Railway and Locomotive Engineering. )S l;u.\RI) i;m)CK .st.\tion. controldivides system orthe track thisinto two miles,sections or TRACK SECTION SHOWING WAVE-WIRETRUNKING. trolled by the alternating track circuitsof the block in advance, and as long astlie block in advance is not shortcircuited or broken, the wave generatorwhich it controls is sending the highfrequency wireless waves along theblock in the rear. A broken rail oropen switch will stop the wave gener-ator which it controls, thus placing theblock in the rear at danger, by theabsence of the wave. On the engine, which is


. Railway and Locomotive Engineering. )S l;u.\RI) i;m)CK .st.\tion. controldivides system orthe track thisinto two miles,sections or TRACK SECTION SHOWING WAVE-WIRETRUNKING. trolled by the alternating track circuitsof the block in advance, and as long astlie block in advance is not shortcircuited or broken, the wave generatorwhich it controls is sending the highfrequency wireless waves along theblock in the rear. A broken rail oropen switch will stop the wave gener-ator which it controls, thus placing theblock in the rear at danger, by theabsence of the wave. On the engine, which is equippedwith the receiving apparatus, are fourharps or antennae. The two mainharps are located one under the centerof the engine, and the other under thetender, the one under the engine being16 ft. long, and the one under thetender 12 ft. long. These harps eachcontain 12 copper wires and are sus-pended about Syi ins. above the trunk-ing in the center of the track. Thereare also two other antennae known asthe counterpoise or pickup an


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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewyork, bookyear19