id	author	title	date	pages	extension	mime	words	sentences	flesch	summary	cache	txt
45179	American Railway Association	The Invention of the Track Circuit The history of Dr. William Robinson's invention of the track circuit, the fundamental unit which made possible our present automatic block signaling and interlocking systems			.txt	text/plain	25822	1283	64	installations of automatic block signals controlled by track circuits. track circuit, its principle and operation under present day signaling signaling" because of his basic invention of the closed track circuit in all normally open circuit or wire systems of automatic signaling, Mr. Robinson had previously explained the new closed rail circuit The Robinson closed rail circuit, which now forms the basis, according the Robinson closed track circuit, as heretofore described, the relay magnet E, the signal C operated thereby, the circuit wires of said the Western division to examine the Robinson closed circuit rail closed rail circuit system of signaling on four different railroads, holes in every rail of long sections of track, he equipped a signal In 1872 I put the closed track circuit system of signaling in connections from the rails to the battery and relay of a track section that automatic signals controlled by continuous closed track circuits	./cache/45179.txt	./txt/45179.txt