US 3,939,385 AGranted

Signalling apparatus for ships

AssigneeKockums Mekaniska Verkstads AB

InventorsBengt Lennart Holm, Gustav Rudolf Edelberg

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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.

Claims4

Dependent claims

In a signalling apparatus for ships, said apparatus being primarily intended for signalling in poor visibility and comprising

a current source,
an electric signalling device,
a first relay for connecting said signalling device to said current source,
a motor,
a plurality of alternatively selectable make contacts which are periodically closable by means of said motor and are connected in parallel with each other and in series with said first relay to said current source, and
a second self-holding relay for coupling said motor to said current source,
the improvement comprising a plurality of parallel-connected switches for manual signalling and at least one third relay which is connected to said current source in series with said parallel-connected switches and has a break contact coupled into the holding current path of said second relay, and at least one make contact for connecting said signalling device to said current source.

4 more elements

Dependencies are inferred from the claim text.