Railroad car hand brake signal device

Details Railroad car hand brake signal device Railroad car hand brake signal device

1980-02-13

1981-10-27

Yasich, Daniel M.

Signals and indicators

Vehicle

Vehicle-energy actuated

188 1111, B61D 4900, G01L 1912

Patent

active

042967074

ABSTRACT:
A railroad car hand brake signal device alerts a train crew when a rail car hand brake is set and air is supplied to the brake pipe during operation of the train. If a rail car hand brake remains applied when air is supplied to the train's brake pipe, a whistle is sounded to enable the crew to identify the car having a set hand brake and a leakage path is provided to cause the air pressure in the brake pipe to fall to alert the train crew in the locomotive that a hand brake is set.

REFERENCES:
patent: 2855247 (1958-10-01), Thompson
patent: 3314047 (1967-04-01), Zincke et al.
patent: 3611981 (1971-10-01), Warncke
patent: 3785333 (1974-01-01), Warncke et al.
patent: 3854417 (1974-12-01), MacDonnell et al.

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