device for the transfer of linienweisen signalbegriffen on locomotive

摘要

964,553. Track apparatus. VYZKUMNY USTAV DOPRAVNI. May 24, 1962 [May 31, 1961], No. 19970/62. Heading B7N. In an arrangement for passing code signals to a locomotive operating over a branched line, a cable 4 is disposed, as shown, adjacent at least one rail of each track and carries coded A.C. signals supplied via transformer 8. These signals are picked up by coils positioned in front of the leading axle of the locomotive and connected to receive apparatus selectively tuned to the frequency of the A.C. signals. The track circuits 1, 2 and 3 are supplied from a common source 5 at a frequency different from the cable circuit and are provided with a common track relay 7.