Signal control system

Details Signal control system Signal control system

1979-03-19

1983-01-25

Eisenzopf, Reinhard J.

Railway switches and signals

Block-signal systems

Automatic

246 34R, B61L 2100

Patent

active

043699421

ABSTRACT:
A railroad signal system includes an A type transmitter and receiver for sending and receiving signal messages in one direction and a B type transmitter and receiver for sending and receiving signal messages in the opposite direction. The A transmitter and the B receiver are located at one end of a signal block and the B transmitter and A receiver are located at the opposite end. The A transmitter provides an A type DC message and the B transmitter provides a B type DC message. The A receiver is responsive to only an A type message and the B receiver is responsive to only a B type message.

REFERENCES:
patent: 2581527 (1952-01-01), Gilson
patent: 2588044 (1952-03-01), Reichard
patent: 3359416 (1967-12-01), Wilcox
patent: 3492587 (1970-01-01), Hutton
patent: 4133504 (1979-01-01), Dobler et al.
Hawks, Ellison, Popular Science Mechanical Encyclopedia, Popular Science Publishing Co., Inc., New York, (1941), pp. 377-386.

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