Tongue switch for rail installations

Details Tongue switch for rail installations Tongue switch for rail installations

1978-01-18

1978-09-19

Blix, Trygve M.

Railway switches and signals

Interlocking

Switch or signal indicators

246217, 246401, B61L 510

Patent

active

041148444

ABSTRACT:
Tongue switch positioning is monitored by circuitry to indicate the switch is obstructed.

REFERENCES:
patent: 2740041 (1956-03-01), Marcum

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