what’s the name of that air horn crank “thing” they use to alert pilots ofincoming bombers?

Question by orchard_littlejoe: what’s the name of that air horn crank “thing” they use to alert pilots ofincoming bombers?
I saw this contraption on the program “Ba Ba-Black-sheep”. It looks like a manual meat grinder but when you crank it, it sounds off with an shrilling horn. I guess this is during the WWII era.

Best answer:

Answer by Chewy Ivan
An air raid siren.

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