Signalling apparatus for ships

Details Signalling apparatus for ships Signalling apparatus for ships

1975-01-03

1976-02-17

Miller, J. D.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340287, 340357, H01H 4722

Patent

active

039393852

ABSTRACT:
A third relay is provided in a signalling apparatus for ships, the apparatus primarily being intended for signalling in poor visibility and comprising an electric signalling device connectable to a current source by means of a first relay, a plurality of alternatively selectable and periodically closable make contacts connected in parallel with each other and in series with the first relay to the current source, and a second self-holding relay for coupling the motor to the current source. The third relay is connected to the current source in series with a plurality of parallel-connected switches for manual signalling, has a break contact coupled into the holding current path of the second relay and at least one make contact for connecting the signalling device to the current source.

REFERENCES:
patent: 1749444 (1930-03-01), Rae

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